TI SN74AC241DW

SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
D
EPIC  (Enhanced-Performance Implanted
CMOS) 1-µm Process
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK), Flat
(W), and DIP (J, N) Packages
SN54AC241 . . . J OR W PACKAGE
SN74AC241 . . . DB, DW, N, OR PW PACKAGE
(TOP VIEW)
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
description
These octal buffers and line drivers are designed
specifically to improve the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and
transmitters.
The ’AC241 are organized as two 4-bit
buffers/drivers with separate complementary
output-enable (1OE and 2OE) inputs. When 1OE
is low or 2OE is high, the device passes
noninverted data from the A inputs to the Y
outputs. When 1OE is high or 2OE is low, the
outputs are in the high-impedance state.
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
2Y4
1A1
1OE
VCC
SN54AC241 . . . FK PACKAGE
(TOP VIEW)
1A2
2Y3
1A3
2Y2
1A4
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
The SN54AC241 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74AC241 is characterized for
operation from –40°C to 85°C.
2OE
D
FUNCTION TABLES
INPUTS
1OE
1A
OUTPUT
1Y
L
H
H
L
L
L
H
X
Z
INPUTS
2OE
2A
OUTPUT
2Y
H
H
H
H
L
L
L
X
Z
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.
EPIC is a trademark of Texas Instruments Incorporated.
Copyright  1996, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
logic symbol†
1OE
1A1
1A2
1A3
1A4
1
EN
2OE
2
18
4
16
6
14
8
12
1Y1
2A1
1Y2
2A2
1Y3
1Y4
2A3
2A4
19
EN
11
9
13
7
15
5
17
3
2Y1
2Y2
2Y3
2Y4
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1OE
1A1
1A2
1A3
1A4
1
2OE
2
18
4
16
6
14
8
12
1Y1
2A1
1Y2
2A2
1Y3
2A3
1Y4
2A4
19
11
9
13
7
15
5
17
3
2Y1
2Y2
2Y3
2Y4
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DB package . . . . . . . . . . . . . . . . . . 0.6 W
DW package . . . . . . . . . . . . . . . . . . 1.6 W
N package . . . . . . . . . . . . . . . . . . . . 1.3 W
PW package . . . . . . . . . . . . . . . . . . 0.7 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. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils,
except for the N package, which has a trace length of zero.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
recommended operating conditions (see Note 3)
SN54AC241
VCC
VIH
Supply voltage
VCC = 3 V
VCC = 4.5 V
High-level input voltage
VCC = 5.5 V
VCC = 3 V
VIL
VI
VO
IOH
IOL
∆t/∆v
Low-level input voltage
MIN
MAX
2
6
Low-level output current
2
6
3.15
3.15
3.85
0
High-level output current
MAX
2.1
0
Output voltage
MIN
2.1
VCC = 4.5 V
VCC = 5.5 V
Input voltage
SN74AC241
3.85
0.9
0.9
1.35
1.35
1.65
1.65
VCC
VCC
0
0
VCC
VCC
–12
–12
–24
–24
VCC = 5.5 V
VCC = 3 V
–24
–24
12
12
VCC = 4.5 V
VCC = 5.5 V
24
24
24
24
TA
Operating free-air temperature
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
V
V
VCC = 3 V
VCC = 4.5 V
Input transition rise or fall rate
UNIT
V
V
V
mA
mA
0
8
0
8
ns/V
–55
125
–40
85
°C
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
IOH = –50 µA
IOH = –12 mA
VOH
IOL = –24
24 mA
A
IOH = –50 mA†
IOH = –75 mA†
IOL = 24 mA
IOL = 50 mA†
IOL = 75 mA†
MAX
SN74AC241
MIN
2.9
2.9
2.9
4.5 V
4.4
4.4
4.4
5.5 V
5.4
5.4
5.4
3V
2.56
2.4
2.46
4.5 V
3.86
3.7
3.76
5.5 V
4.86
4.7
4.76
V
3.85
0.1
0.1
0.1
4.5 V
0.1
0.1
0.1
5.5 V
0.1
0.1
0.1
3V
0.36
0.5
0.44
4.5 V
0.36
0.5
0.44
5.5 V
0.36
0.5
0.44
VO = VCC or GND,
VI(OE) = VIL or VIH
5.5 V
ICC
Ci
VI = VCC or GND,
VI = VCC or GND
V
1.65
5.5 V
IOZ
UNIT
3.85
5.5 V
IO = 0
MAX
3V
55V
5.5
Control inputs
MIN
3V
VI = VCC or GND
VI = VCC or GND
II
SN54AC241
5.5 V
IOL = 12 mA
Data inputs
TA = 25°C
TYP
MAX
5.5 V
IOL = 50 µA
VOL
MIN
1.65
±0.1
±1
±1
±0.1
±1
±1
±0.25
±5
±2.5
µA
4
80
40
µA
5.5 V
5V
2.5
µA
pF
† Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
switching characteristics over recommended operating
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A
Y
tPZH
tPZL
OE or OE
Y
tPHZ
tPLZ
OE or OE
Y
MIN
TA = 25°C
TYP
MAX
1.5
6
9
1.5
6
9
1.5
6.5
1.5
7
2
1.5
POST OFFICE BOX 655303
temperature
SN54AC241
MIN
1
12
1.5
10
1
11.5
1
10.5
12.5
1
13
1
13
12
1
13
1.5
13
8
12
1
13
2
12.5
7
12.5
1
13
1
13.5
• DALLAS, TEXAS 75265
MIN
SN74AC241
MAX
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
free-air
MAX
range,
UNIT
ns
ns
ns
SN54AC241, SN74AC241
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS513C – JUNE 1995 – REVISED SEPTEMBER 1996
switching characteristics over recommended operating
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A
Y
tPZH
tPZL
OE or OE
Y
tPHZ
tPLZ
OE or OE
Y
free-air
MIN
TA = 25°C
TYP
MAX
1.5
5
1.5
temperature
SN54AC241
SN74AC241
MIN
MAX
MIN
MAX
7
1
9.5
1
7.5
4.5
7
1
9
1
7.5
1.5
5.5
9
1
10
1
9.5
1.5
5.5
9
1
10
1
9.5
1.5
6.5
10
1
11.5
1
10.5
1.5
6
10
1
11.5
1
10.5
range,
UNIT
ns
ns
ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
Cpd
TEST CONDITIONS
Power dissipation capacitance per buffer/driver
CL = 50 pF,
f = 1 MHz
TYP
UNIT
45
pF
PARAMETER MEASUREMENT INFORMATION
2 × VCC
S1
500 Ω
From Output
Under Test
CL = 50 pF
(see Note A)
Open
500 Ω
Output
Control
(low-level
enabling)
LOAD CIRCUIT
VCC
Input
50% VCC
50% VCC
0V
tPLH
tPHL
VOH
Output
50% VCC
50% VCC
VOL
S1
Open
2 × VCC
Open
VCC
50% VCC
50% VCC
0V
tPZL
[ VCC
tPLZ
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
50% VCC
tPHZ
tPZH
VOLTAGE WAVEFORMS
VOL + 0.3 V
VOL
50% VCC
VOH – 0.3 V
VOH
[0V
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
B. 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.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
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Copyright  1998, Texas Instruments Incorporated