SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
Memory Address Registers
D PNP Inputs Reduce DC Loading
D Hysteresis at Inputs Improves Noise
SN54LS’, SN54S’ . . . J OR W PACKAGE
SN74LS240, SN74LS244 . . . DB, DW, N, OR NS PACKAGE
SN74LS241 . . . DW, N, OR NS PACKAGE
SN74S’ . . . DW OR N PACKAGE
(TOP VIEW)
Margins
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
description
†
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
2G/2G†
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
2G for ’LS241 and ’S241 or 2G for all other drivers.
†
SN54LS’, SN54S’ . . . FK PACKAGE
(TOP VIEW)
2Y4
1A1
1G
VCC
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of three-state memory address drivers,
clock drivers, and bus-oriented receivers and
transmitters. The designer has a choice of
selected combinations of inverting and
noninverting outputs, symmetrical, active-low
output-control (G) inputs, and complementary
output-control (G and G) inputs. These devices
feature high fan-out, improved fan-in, and 400-mV
noise margin. The SN74LS’ and SN74S’ devices
can be used to drive terminated lines down to
133 Ω.
1
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
1Y1
2A4
1Y2
2A3
1Y3
2Y1
GND
2A1
1Y4
2A2
1A2
2Y3
1A3
2Y2
1A4
2G/2G
D 3-State Outputs Drive Bus Lines or Buffer
†
2G for ’LS241 and ’S241 or 2G for all other drivers.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2010, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
ORDERING INFORMATION{
PACKAGE}
TA
PDIP − N
0°C to 70°C
SOIC − DW
SOP − NS
SSOP − DB
Tube
ORDERABLE PART NUMBER
SN74LS240N
SN74LS240N
SN74LS241N
SN74LS241N
SN74LS244N
SN74LS244N
SN74S240N
SN74S240N
SN74S241N
SN74S241N
SN74S244N
SN74S244N
Tube
SN74LS240DW
Tape and reel
SN74LS240DWR
Tube
SN74LS241DW
Tape and reel
SN74LS241DWR
Tube
SN74LS244DW
Tape and reel
SN74LS244DWR
Tube
SN74S240DW
Tape and reel
SN74S240DWR
Tube
SN74S241DW
Tape and reel
SN74S241DWR
Tube
SN74S244DW
Tape and reel
SN74S244DWR
Tape and reel
Tape and reel
TOP-SIDE MARKING
LS240
LS241
LS244
S240
S241
S244
SN74LS240NSR
74LS240
SN74LS241NSR
74LS241
SN74LS244NSR
74LS244
SN74LS240DBR
LS240
SN74LS244DBR
LS244
†
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site
at www.ti.com.
‡ Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
ORDERING INFORMATION{ (CONTINUED)
PACKAGE}
TA
CDIP − J
Tube
−55°C
55°C to 125°C
CFP − W
LCCC − FK
Tube
Tube
ORDERABLE PART NUMBER
TOP-SIDE MARKING
SN54LS240J
SN54LS240J
SNJ54LS240J
SNJ54LS240J
SN54LS241J
SN54LS241J
SNJ54LS241J
SNJ54LS241J
SN54LS244J
SN54LS244J
SNJ54LS244J
SNJ54LS244J
SN54S240J
SN54S240J
SNJ54S240J
SNJ54S240J
SN54S241J
SN54S241J
SNJ54S241J
SNJ54S241J
SN54S244J
SN54S244J
SNJ54S244J
SNJ54S244J
SNJ54LS240W
SNJ54LS240W
SNJ54LS241W
SNJ54LS241W
SNJ54LS244W
SNJ54LS244W
SNJ54S240W
SNJ54S240W
SNJ54S241W
SNJ54S241W
SNJ54S244W
SNJ54S244W
SNJ54LS240FK
SNJ54LS240FK
SNJ54LS241FK
SNJ54LS241FK
SNJ54LS244FK
SNJ54LS244FK
SNJ54S240FK
SNJ54S240FK
SNJ54S241FK
SNJ54S241FK
SNJ54S244FK
SNJ54S244FK
†
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site
at www.ti.com.
‡ Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
schematics of inputs and outputs
’LS240, ’LS241, ’LS244
’S240, ’S241, ’S244
EQUIVALENT OF EACH INPUT
EQUIVALENT OF EACH INPUT
VCC
VCC
Req
9 kΩ NOM
Input
Input
G and G inputs: Req = 2 kΩ NOM
A inputs: Req = 2.8 kΩ NOM
TYPICAL OF ALL OUTPUTS
VCC
R
Output
GND
’LS240. ’LS241, ’LS244: R = 50 Ω NOM
’S240, ‘S241, S244: R = 25 Ω NOM
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
logic diagram
’LS240, ’S240
1G
1A1
1A2
1A3
1A4
2G
2A1
2A2
2A3
2A4
’LS241, ’S241
1
1G
2
18
1Y1
1A1
4
16
1Y2
1A2
6
14
1Y3
1A3
8
12
1Y4
1A4
19
2G
11
9
13
7
15
5
17
3
2Y1
2A1
2Y2
2A2
2Y3
2A3
2Y4
2A4
1
2
18
4
16
6
14
8
12
1Y1
1Y2
1Y3
1Y4
19
11
9
13
7
15
5
17
3
2Y1
2Y2
2Y3
2Y4
’LS244, ’S244
1G
1A1
1A2
1A3
1A4
2G
2A1
2A2
2A3
2A4
1
2
18
4
16
6
14
8
12
1Y1
1Y2
1Y3
1Y4
19
11
9
13
7
15
5
17
3
2Y1
2Y2
2Y3
2Y4
Pin numbers shown are for DB, DW, J, N, NS, and W packages.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI: ’LS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
’S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Voltage values are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
SN54LS’
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.75
5
5.25
UNIT
VCC
Supply voltage (see Note 1)
VIH
High-level input voltage
VIL
Low-level input voltage
0.7
0.8
V
IOH
High-level output current
−12
−15
mA
IOL
Low-level output current
12
24
mA
TA
Operating free-air temperature
70
°C
2
−55
NOTE 1: Voltage values are with respect to network ground terminal.
6
SN74LS’
MIN
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
2
125
0
V
V
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54LS’
TEST CONDITIONS†
PARAMETER
VIK
VCC = MIN,
Hysteresis
(VT+ − VT−)
VCC = MIN
MIN
TYP‡
II = −18 mA
SN74LS’
MAX
MIN
TYP‡
−1.5
MAX
−1.5
0.2
0.4
0.2
0.4
3.4
2.4
3.4
UNIT
V
V
VCC = MIN,
IOH = −3 mA
VIH = 2 V,
VIL = MAX,
2.4
VCC = MIN,
IOH = MAX
VIH = 2 V,
VIL = 0.5 V,
2
VOL
VCC = MIN,
VIL = MAX
VIH = 2 V,
V
IOZH
VCC = MAX,
VIL = MAX
VIH = 2 V,
VO = 2.7 V
20
20
µA
IOZL
VCC = MAX,
VIL = MAX
VIH = 2 V,
VO = 0.4 V
−20
−20
µA
II
VCC = MAX,
VI = 7 V
0.1
0.1
mA
IIH
VCC = MAX,
VI = 2.7 V
20
20
µA
IIL
VCC = MAX,
VIL = 0.4 V
−0.2
mA
IOS§
VCC = MAX,
−225
mA
VOH
V
IOL = 12 mA
VCC = MAX
MAX,
Output open
0.4
0.4
IOL = 24 mA
0.5
−0.2
−40
Outputs high
ICC
2
Outputs low
Outputs disabled
−225
−40
All
17
27
17
27
’LS240
26
44
26
44
’LS241, ’LS244
27
46
27
46
’LS240
29
50
29
50
’LS241, ’LS244
32
54
32
54
V
mA
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values are at V
CC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.
switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1)
’LS240
PARAMETER
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
TEST CONDITIONS
MIN
Ω
RL = 667 Ω,
CL = 45 pF
RL = 667 Ω,
Ω
CL = 45 pF
F
Ω
RL = 667 Ω,
CL = 5 pF
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
’LS241, ’LS244
TYP
MAX
9
MIN
TYP
MAX
14
12
18
12
18
12
18
20
30
20
30
15
23
15
23
10
20
10
20
15
25
15
25
UNIT
ns
ns
ns
7
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
recommended operating conditions
SN54S’
SN74S’
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.75
5
5.25
UNIT
VCC
Supply voltage (see Note 1)
VIH
High-level input voltage
VIL
Low-level input voltage
0.8
0.8
V
IOH
High-level output current
−12
−15
mA
IOL
Low-level output current
48
64
mA
40
kΩ
70
°C
2
2
External resistance between any input and VCC or ground
TA
V
40
Operating free-air temperature (see Note 3)
−55
125
V
0
NOTES: 1. Voltage values are with respect to network ground terminal.
3. An SN54S241J operating at free-air temperature above 116°C requires a heat sink that provides a thermal resistance from case
to free air, RθCA, of not more that 40°C/W.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54S’
TEST CONDITIONS†
PARAMETER
VIK
VCC = MIN,
Hysteresis
(VT+ − VT−)
VCC = MIN
MIN
TYP‡
II = −18 mA
SN74S’
MAX
MIN
TYP‡
−1.2
0.2
0.4
−1.2
0.2
UNIT
V
0.4
V
3.4
V
VCC = MIN
IOH = −1 mA
VIH = 2 V,
VIL = 0.8 V,
VCC = MIN,
IOH = −3 mA
VIH = 2 V,
VIL = 0.8 V,
2.4
VCC = MIN,
IOH = MAX
VIH = 2 V,
VIL = 0.5 V,
2
VOL
VCC = MIN,
IOL = MAX
VIH = 2 V,
VIL = 0.8 V,
0.55
0.55
V
IOZH
VCC = MAX,
VIL = 0.8 V
VIH = 2 V,
VO = 2.4 V
50
50
µA
IOZL
VCC = MAX,
VIL = 0.8 V
VIH = 2 V,
VO = 0.5 V
−50
−50
µA
II
VCC = MAX,
VI = 5.5 V
1
1
mA
IIH
VCC = MAX,
VI = 2.7 V
50
50
µA
−400
−400
µA
−2
mA
−225
mA
VOH
2.7
3.4
IIL
VCC = MAX
MAX,
IOS§
VCC = MAX
5V
VI = 0
0.5
ICC
VCC = MAX,
Output open
Any G
−2
−50
Outputs high
Outputs low
Outputs disabled
2.4
2
Any A
−225
−50
’S240
80
123
80
135
’S241,’S244
95
147
95
160
’S240
100
145
100
150
’S241, ’S244
120
170
120
180
’S240
100
145
100
150
’S241, ’S244
120
170
120
180
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values are at V
CC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.
8
MAX
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
mA
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
switching characteristics, VCC = 5 V, TA = 25°C (see Figure 2)
’S240
PARAMETER
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
TEST CONDITIONS
MIN
RL = 90 Ω
Ω,
CL = 50 pF
F
RL = 90 Ω
Ω,
CL = 50 pF
F
RL = 90 Ω
Ω,
CL = 5 pF
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
’S241, ’S244
TYP
MAX
4.5
4.5
MIN
TYP
MAX
7
6
9
7
6
9
10
15
10
15
6.5
10
8
12
10
15
10
15
6
9
6
9
UNIT
ns
ns
ns
9
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
PARAMETER MEASUREMENT INFORMATION
SERIES 54LS/74LS DEVICES
VCC
Test
Point
Test
Point
VCC
RL
From Output
Under Test
CL
(see Note A)
CL
(see Note A)
High-Level
Pulse
1.3 V
S2
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3V
Timing
Input
1.3 V
5 kΩ
Test
Point
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 2-STATE TOTEM-POLE OUTPUTS
(see Note B)
CL
(see Note A)
RL
(see Note B)
S1
From Output
Under Test
VCC
From Output
Under Test
RL
1.3 V
0V
tw
Low-Level
Pulse
1.3 V
tsu
Data
Input
1.3 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
1.3 V
1.3 V
Output
Control
(low-level
enabling)
0V
tPLH
In-Phase
Output
(see Note D)
1.3 V
0V
3V
1.3 V
1.3 V
0V
tPZL
tPLZ
tPHL
VOH
1.3 V
1.3 V
Waveform 1
(see Notes C
and D)
VOL + 0.3 V
VOL
tPZH
tPLH
VOH
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
≈1.5 V
1.3 V
VOL
tPHL
Out-of-Phase
Output
(see Note D)
3V
1.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
Input
th
Waveform 2
(see Notes C
and D)
tPHZ
VOH
1.3 V
VOH − 0.3 V
≈1.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A. CL includes probe and jig capacitance.
B. All diodes are 1N3064 or equivalent.
C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
D. S1 and S2 are closed for tPLH, tPHL, tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL.
E. Phase relationships between inputs and outputs have been chosen arbitrarily for these examples.
F. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω, tr ≤ 15 ns, tf ≤ 6 ns.
G. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
10
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
PARAMETER MEASUREMENT INFORMATION
SERIES 54S/74S DEVICES
VCC
Test
Point
Test
Point
VCC
RL
(see Note B)
From Output
Under Test
CL
(see Note A)
High-Level
Pulse
1.5 V
S2
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3V
Timing
Input
1.5 V
1 kΩ
Test
Point
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 2-STATE TOTEM-POLE OUTPUTS
(see Note B)
CL
(see Note A)
RL
CL
(see Note A)
S1
From Output
Under Test
VCC
From Output
Under Test
RL
1.5 V
0V
tw
Low-Level
Pulse
1.5 V
tsu
0V
In-Phase
Output
(see Note D)
tPHL
VOH
1.5 V
Out-of-Phase
Output
(see Note D)
1.5 V
3V
1.5 V
Waveform 1
(see Notes C
and D)
tPLZ
VOH
1.5 V
1.5 V
VOL
VOL
Waveform 2
(see Notes C
and D)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
≈1.5 V
1.5 V
tPZH
tPLH
1.5 V
0V
tPZL
VOL
tPHL
1.5 V
0V
Output
Control
(low-level
enabling)
1.5 V
tPLH
1.5 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
1.5 V
3V
Data
Input
1.5 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
Input
th
VOL + 0.5 V
tPHZ
VOH
1.5 V
VOH − 0.5 V
≈1.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A. CL includes probe and jig capacitance.
B. All diodes are 1N3064 or equivalent.
C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
D. S1 and S2 are closed for tPLH, tPHL, tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL.
E. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω; tr and tf ≤ 7 ns for Series
54/74 devices and tr and tf ≤ 2.5 ns for Series 54S/74S devices.
F. The outputs are measured one at a time with one input transition per measurement.
Figure 2. Load Circuits and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SDLS144C − APRIL 1985 − REVISED MAY 2010
APPLICATION INFORMATION
12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
5962-7801201VSA
ACTIVE
CFP
W
20
25
TBD
A42
N / A for Pkg Type
-55 to 125
5962-7801201VS
A
SNV54LS240W
7705701RA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7705701RA
SNJ54LS244J
7705701SA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7705701SA
SNJ54LS244W
78012012A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
78012012A
SNJ54LS
240FK
7801201RA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7801201RA
SNJ54LS240J
7801201SA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7801201SA
SNJ54LS240W
JM38510/32401B2A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
JM38510/
32401B2A
JM38510/32401BRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32401BRA
JM38510/32401BSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32401BSA
JM38510/32402B2A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
JM38510/
32402B2A
JM38510/32402BRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32402BRA
JM38510/32402BSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32402BSA
JM38510/32403B2A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
JM38510/
32403B2A
JM38510/32403BRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403BRA
JM38510/32403BSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403BSA
JM38510/32403SRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403SRA
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
JM38510/32403SSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403SSA
M38510/32401B2A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
JM38510/
32401B2A
M38510/32401BRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32401BRA
M38510/32401BSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32401BSA
M38510/32402B2A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
JM38510/
32402B2A
M38510/32402BRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32402BRA
M38510/32402BSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32402BSA
M38510/32403B2A
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
JM38510/
32403B2A
M38510/32403BRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403BRA
M38510/32403BSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403BSA
M38510/32403SRA
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403SRA
M38510/32403SSA
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
JM38510/
32403SSA
SN54LS240J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54LS240J
SN54LS241J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54LS241J
SN54LS244J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54LS244J
SN54S240J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54S240J
SN54S241J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54S241J
SN54S244J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SN54S244J
SN74LS240DBR
ACTIVE
SSOP
DB
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
Addendum-Page 2
LS240
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
SN74LS240DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS240
SN74LS240DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS240
SN74LS240DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS240
SN74LS240DWRE4
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS240
SN74LS240J
OBSOLETE
CDIP
J
20
TBD
Call TI
Call TI
0 to 70
SN74LS240N
ACTIVE
PDIP
N
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS240N3
OBSOLETE
PDIP
N
20
TBD
Call TI
Call TI
0 to 70
SN74LS240NE4
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS240N
SN74LS240NSR
ACTIVE
SO
NS
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
74LS240
SN74LS241DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS241
SN74LS241DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS241
SN74LS241DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS241
SN74LS241J
OBSOLETE
CDIP
J
20
TBD
Call TI
Call TI
0 to 70
SN74LS241N
ACTIVE
PDIP
N
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS241N3
OBSOLETE
PDIP
N
20
TBD
Call TI
Call TI
0 to 70
SN74LS241NSR
ACTIVE
SO
NS
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
74LS241
SN74LS244DBR
ACTIVE
SSOP
DB
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244DBRG4
ACTIVE
SSOP
DB
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244DWE4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
20
20
Addendum-Page 3
SN74LS240N
SN74LS241N
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
SN74LS244DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244DWRE4
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244DWRG4
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
LS244
SN74LS244J
OBSOLETE
CDIP
J
20
TBD
Call TI
Call TI
0 to 70
SN74LS244N
ACTIVE
PDIP
N
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS244N3
OBSOLETE
PDIP
N
20
TBD
Call TI
Call TI
0 to 70
SN74LS244NE4
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74LS244N
SN74LS244NSR
ACTIVE
SO
NS
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
74LS244
SN74LS244NSRG4
ACTIVE
SO
NS
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
74LS244
SN74S240DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S240
SN74S240DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S240
SN74S240DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S240
SN74S240N
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74S240N
20
SN74LS244N
SN74S240N3
OBSOLETE
PDIP
N
20
TBD
Call TI
Call TI
0 to 70
SN74S240NE4
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74S240N
SN74S241DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S241
SN74S241DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S241
SN74S241J
OBSOLETE
CDIP
J
20
TBD
Call TI
Call TI
0 to 70
SN74S241N
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
Addendum-Page 4
SN74S241N
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
SN74S241N3
OBSOLETE
PDIP
N
20
TBD
Call TI
Call TI
0 to 70
SN74S244DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S244
SN74S244DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S244
SN74S244DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
0 to 70
S244
TBD
Call TI
Call TI
0 to 70
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
0 to 70
SN74S244J
OBSOLETE
CDIP
J
20
SN74S244N
ACTIVE
PDIP
N
20
SN74S244N
SN74S244N3
OBSOLETE
PDIP
N
20
TBD
Call TI
Call TI
0 to 70
SNJ54LS240FK
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
78012012A
SNJ54LS
240FK
SNJ54LS240J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7801201RA
SNJ54LS240J
SNJ54LS240W
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7801201SA
SNJ54LS240W
SNJ54LS241FK
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
SNJ54LS
241FK
SNJ54LS241J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54LS241J
SNJ54LS241W
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54LS241W
SNJ54LS244FK
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
SNJ54LS
244FK
SNJ54LS244J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7705701RA
SNJ54LS244J
SNJ54LS244W
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
7705701SA
SNJ54LS244W
SNJ54S240FK
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
SNJ54S
240FK
SNJ54S240J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54S240J
SNJ54S240W
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54S240W
Addendum-Page 5
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
SNJ54S241FK
ACTIVE
LCCC
FK
20
1
TBD
POST-PLATE
N / A for Pkg Type
-55 to 125
SNJ54S
241FK
SNJ54S241J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54S241J
SNJ54S244J
ACTIVE
CDIP
J
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54S244J
SNJ54S244W
ACTIVE
CFP
W
20
1
TBD
A42
N / A for Pkg Type
-55 to 125
SNJ54S244W
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
Addendum-Page 6
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
17-Dec-2015
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF SN54LS240, SN54LS240-SP, SN54LS241, SN54LS244, SN54LS244-SP, SN54S240, SN54S241, SN54S244, SN74LS240, SN74LS241,
SN74LS244, SN74S240, SN74S241, SN74S244 :
• Catalog: SN74LS240, SN54LS240, SN74LS241, SN74LS244, SN54LS244, SN74S240, SN74S241, SN74S244
• Military: SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
• Space: SN54LS240-SP, SN54LS244-SP
NOTE: Qualified Version Definitions:
• Catalog - TI's standard catalog product
• Military - QML certified for Military and Defense Applications
• Space - Radiation tolerant, ceramic packaging and qualified for use in Space-based application
Addendum-Page 7
PACKAGE MATERIALS INFORMATION
www.ti.com
10-Sep-2015
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
B0
(mm)
K0
(mm)
P1
(mm)
W
Pin1
(mm) Quadrant
SN74LS240DBR
SSOP
DB
20
2000
330.0
16.4
8.2
7.5
2.5
12.0
16.0
Q1
SN74LS240DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
SN74LS240NSR
SO
NS
20
2000
330.0
24.4
9.0
13.0
2.4
4.0
24.0
Q1
SN74LS241DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
SN74LS241NSR
SO
NS
20
2000
330.0
24.4
9.0
13.0
2.4
4.0
24.0
Q1
SN74LS244DBR
SSOP
DB
20
2000
330.0
16.4
8.2
7.5
2.5
12.0
16.0
Q1
SN74LS244DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
SN74LS244NSR
SO
NS
20
2000
330.0
24.4
9.0
13.0
2.4
4.0
24.0
Q1
SN74S240DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
SN74S241DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
SN74S244DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.3
2.7
12.0
24.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
10-Sep-2015
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
SN74LS240DBR
SN74LS240DWR
SSOP
DB
20
2000
367.0
367.0
38.0
SOIC
DW
20
2000
367.0
367.0
45.0
SN74LS240NSR
SO
NS
20
2000
367.0
367.0
45.0
SN74LS241DWR
SOIC
DW
20
2000
367.0
367.0
45.0
SN74LS241NSR
SO
NS
20
2000
367.0
367.0
45.0
SN74LS244DBR
SSOP
DB
20
2000
367.0
367.0
38.0
SN74LS244DWR
SOIC
DW
20
2000
367.0
367.0
45.0
SN74LS244NSR
SO
NS
20
2000
367.0
367.0
45.0
SN74S240DWR
SOIC
DW
20
2000
367.0
367.0
45.0
SN74S241DWR
SOIC
DW
20
2000
367.0
367.0
45.0
SN74S244DWR
SOIC
DW
20
2000
367.0
367.0
45.0
Pack Materials-Page 2
PACKAGE OUTLINE
DW0020A
SOIC - 2.65 mm max height
SCALE 1.200
SOIC
C
10.63
TYP
9.97
SEATING PLANE
PIN 1 ID
AREA
A
0.1 C
20
1
13.0
12.6
NOTE 3
18X 1.27
2X
11.43
10
11
B
7.6
7.4
NOTE 4
20X
0.51
0.31
0.25
C A B
2.65 MAX
0.33
TYP
0.10
SEE DETAIL A
0.25
GAGE PLANE
0 -8
0.3
0.1
1.27
0.40
DETAIL A
TYPICAL
4220724/A 05/2016
NOTES:
1. All linear dimensions are in millimeters. Dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed 0.15 mm per side.
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.43 mm per side.
5. Reference JEDEC registration MS-013.
www.ti.com
EXAMPLE BOARD LAYOUT
DW0020A
SOIC - 2.65 mm max height
SOIC
20X (2)
SYMM
1
20
20X (0.6)
18X (1.27)
SYMM
(R0.05)
TYP
10
11
(9.3)
LAND PATTERN EXAMPLE
SCALE:6X
SOLDER MASK
OPENING
METAL
SOLDER MASK
OPENING
METAL UNDER
SOLDER MASK
0.07 MAX
ALL AROUND
0.07 MIN
ALL AROUND
SOLDER MASK
DEFINED
NON SOLDER MASK
DEFINED
SOLDER MASK DETAILS
4220724/A 05/2016
NOTES: (continued)
6. Publication IPC-7351 may have alternate designs.
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
www.ti.com
EXAMPLE STENCIL DESIGN
DW0020A
SOIC - 2.65 mm max height
SOIC
20X (2)
SYMM
1
20
20X (0.6)
18X (1.27)
SYMM
11
10
(9.3)
SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
SCALE:6X
4220724/A 05/2016
NOTES: (continued)
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
9. Board assembly site may have different recommendations for stencil design.
www.ti.com
MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
DB (R-PDSO-G**)
PLASTIC SMALL-OUTLINE
28 PINS SHOWN
0,38
0,22
0,65
28
0,15 M
15
0,25
0,09
8,20
7,40
5,60
5,00
Gage Plane
1
14
0,25
A
0°–ā8°
0,95
0,55
Seating Plane
2,00 MAX
0,10
0,05 MIN
PINS **
14
16
20
24
28
30
38
A MAX
6,50
6,50
7,50
8,50
10,50
10,50
12,90
A MIN
5,90
5,90
6,90
7,90
9,90
9,90
12,30
DIM
4040065 /E 12/01
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-150
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