TI SN74ALS541N

SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025D – APRIL 1982 – REVISED MARCH 2002
D
D
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
pnp Inputs Reduce dc Loading
Data Flowthrough Pinout (All Inputs on
Opposite Side From Outputs)
SN54ALS541 . . . J PACKAGE
SN74ALS540 . . . DW, N, OR NS PACKAGE
SN74ALS541 . . . DB, DW, N, OR NS PACKAGE
(TOP VIEW)
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
description
These octal buffers and line drivers are designed
to have the performance of the popular
SN54ALS240A/ SN74ALS240A series and, at
the same time, offer a pinout with inputs and
outputs on opposite sides of the package. This
arrangement greatly facilitates printed circuit
board layout.
The 3-state control gate is a 2-input NOR gate
such that, if either output-enable (OE1 or OE2)
input is high, all eight outputs are in the
high-impedance state.
The -1 versions of SN74ALS540 and
SN74ALS541 are identical to the standard
versions, except that the recommended
maximum IOL is increased to 48 mA. There is no
-1 version of the SN54ALS541.
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
A2
A1
OE1
VCC
SN54ALS541 . . . FK PACKAGE
(TOP VIEW)
A3
A4
A5
A6
A7
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
Y1
Y2
Y3
Y4
Y5
A8
GND
Y8
Y7
Y6
The SN74ALS540 provides inverted data. The
’ALS541 provide true data at the outputs.
1
OE2
D
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  2002, 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
SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025D – APRIL 1982 – REVISED MARCH 2002
ORDERING INFORMATION
PDIP – N
SOIC – DW
0°C to 70°C
SOP – NS
55°C to 125°C
–55°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
Tube
TOP-SIDE
MARKING
SN74ALS540N
SN74ALS540N
SN74ALS540-1N
SN74ALS540-1N
SN74ALS541N
SN74ALS541N
SN74ALS541-1N
SN74ALS541-1N
Tube
SN74ALS540DW
Tape and reel
SN74ALS540DWR
Tube
SN74ALS540-1DW
Tube
SN74ALS541DW
Tape and reel
SN74ALS541DWR
Tube
SN74ALS541-1DW
Tape and reel
SN74ALS541-1DWR
Tape and reel
SN74ALS540NSR
ALS540
SN74ALS540-1NSR
ALS540-1
SN74ALS541NSR
ALS541
SN74ALS541-1NSR
ALS541-1
SN74ALS541DBR
G541
SN74ALS541-1DBR
G541-1
Tape and reel
ALS540
ALS540-1
ALS541
ALS541 1
ALS541-1
SSOP – DB
Tape and reel
CDIP – J
Tube
SNJ54ALS541J
SNJ54ALS541J
LCCC – FK
Tube
SNJ54ALS541FK
SNJ54ALS541FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
logic diagrams (positive logic)
′ALS541
SN74ALS540
OE1
OE2
A1
1
OE1
19
2
OE2
18
Y1
A1
To Seven Other Channels
2
POST OFFICE BOX 655303
1
19
2
18
Y1
To Seven Other Channels
• DALLAS, TEXAS 75265
SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025D – APRIL 1982 – REVISED MARCH 2002
absolute maximum ratings over operating free-air temperature (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Package thermal impedance, θJA (see Note 1): 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.
NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
SN74ALS540
SN74ALS541
SN54ALS541
VCC
VIH
Supply voltage
VIL
IOH
Low-level input voltage
IOL
Low level output current
Low-level
High-level input voltage
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.5
5
5.5
2
High-level output current
TA
Operating free-air temperature
† Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
POST OFFICE BOX 655303
UNIT
MIN
– 55
• DALLAS, TEXAS 75265
2
V
V
0.7
0.8
V
– 12
– 15
mA
12
24
48†
mA
70
°C
125
0
3
SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025D – APRIL 1982 – REVISED MARCH 2002
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
MIN
VIK
VOH
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = – 18 mA
IOH = – 0.4 mA
VCC = 4.5 V
IOH = – 3 mA
IOH = – 12 mA
VOL
VCC = 4.5 V
IOL = 24 mA
IOL = 48 mA†
IOZH
IOZL
VCC = 5.5 V,
VCC = 5.5 V,
VO = 2.7 V
VO = 0.4 V
II
IIH
VCC = 5.5 V,
VCC = 5.5 V,
VI = 7 V
VI = 2.7 V
IIL
IO§
VCC = 5.5 V,
VCC = 5.5 V,
VI = 0.4 V
VO = 2.25 V
VCC = 5.5 V
ICC
VCC – 2
2.4
VCC = 5.5 V
MAX
MIN
TYP‡
– 1.2
VCC – 2
2.4
3.2
UNIT
MAX
3.2
V
V
2
2
0.25
0.4
0.25
0.4
0.35
0.5
0.35
0.5
20
µA
– 20
– 20
µA
0.1
0.1
mA
20
20
µA
– 0.1
mA
– 112
mA
– 112
– 30
Outputs high
5
10
Outputs low
13
22
Outputs disabled
11
19
6
14
25
Outputs low
Outputs disabled
V
20
– 0.2
– 20
Outputs high
’ALS541
TYP‡
– 1.2
IOH = – 15 mA
IOL = 12 mA
SN74ALS540
SN74ALS540
SN74ALS541
SN54ALS541
TEST CONDITIONS
6
14
15
25
15
13.5
32
13.5
mA
22
† Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ The output conditions have been chosen to produce a current that closely approximates one-half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX¶
TO
(OUTPUT)
SN54ALS541
tPLH
tPHL
A
Y
tPZH
tPZL
OE
Y
tPHZ
tPLZ
OE
Y
SN74ALS540
SN74ALS541
MIN
MAX
MIN
MAX
MIN
MAX
4
17
2
12
4
14
2
14
2
9
2
10
5
18
5
15
5
15
8
28
8
20
8
20
1
12
1
10
1
10
2
14
2
12
2
12
¶ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
4
POST OFFICE BOX 655303
UNIT
• DALLAS, TEXAS 75265
ns
ns
ns
SN54ALS541, SN74ALS540, SN74ALS541
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SDAS025D – APRIL 1982 – REVISED MARCH 2002
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7V
RL = R1 = R2
VCC
S1
RL
R1
Test
Point
From Output
Under Test
CL
(see Note A)
From Output
Under Test
RL
Test
Point
From Output
Under Test
CL
(see Note A)
CL
(see Note A)
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
3.5 V
Timing
Input
Test
Point
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
3.5 V
High-Level
Pulse
1.3 V
R2
1.3 V
1.3 V
0.3 V
0.3 V
tsu
Data
Input
tw
th
3.5 V
1.3 V
3.5 V
Low-Level
Pulse
1.3 V
0.3 V
1.3 V
0.3 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3.5 V
Output
Control
(low-level
enabling)
1.3 V
1.3 V
0.3 V
tPZL
Waveform 1
S1 Closed
(see Note B)
tPLZ
tPHZ
1.3 V
1.3 V
0.3 V
tPHL
≈3.5 V
tPLH
VOL
0.3 V
VOH
1.3 V
3.5 V
Input
1.3 V
tPZH
Waveform 2
S1 Open
(see Note B)
1.3 V
0.3 V
≈0 V
VOH
In-Phase
Output
1.3 V
1.3 V
VOL
tPLH
tPHL
VOH
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
9-Oct-2007
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
Lead/Ball Finish
MSL Peak Temp (3)
5962-89602012A
ACTIVE
LCCC
FK
20
1
TBD
5962-8960201RA
ACTIVE
CDIP
J
20
1
TBD
5962-8960201SA
OBSOLETE
CFP
W
20
TBD
Call TI
SN54ALS541J
ACTIVE
CDIP
J
20
1
TBD
A42 SNPB
SN74ALS540-1DW
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540-1DWE4
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540-1DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540-1DWR
OBSOLETE
SOIC
DW
20
TBD
Call TI
SN74ALS540-1N
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS540-1NE4
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS540-1NSR
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540-1NSRE4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540-1NSRG4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540DW
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540DWR
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540DWRG4
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540N
ACTIVE
PDIP
N
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS540N3
OBSOLETE
PDIP
N
20
TBD
Call TI
SN74ALS540NE4
ACTIVE
PDIP
N
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS540NSR
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540NSRE4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS540NSRG4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DBR
ACTIVE
SSOP
DB
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DBRE4
ACTIVE
SSOP
DB
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DBRG4
ACTIVE
SSOP
DB
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DW
ACTIVE
SOIC
DW
20
CU NIPDAU
Level-1-260C-UNLIM
20
20
25
Addendum-Page 1
Green (RoHS &
no Sb/Br)
POST-PLATE N / A for Pkg Type
A42 SNPB
N / A for Pkg Type
Call TI
N / A for Pkg Type
Call TI
Call TI
PACKAGE OPTION ADDENDUM
www.ti.com
(1)
9-Oct-2007
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
SN74ALS541-1DWE4
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DWR
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DWRE4
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1DWRG4
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1N
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS541-1NE4
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS541-1NSR
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1NSRE4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541-1NSRG4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DBR
ACTIVE
SSOP
DB
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DBRE4
ACTIVE
SSOP
DB
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DBRG4
ACTIVE
SSOP
DB
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DW
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DWR
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DWRE4
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541DWRG4
ACTIVE
SOIC
DW
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541N
ACTIVE
PDIP
N
20
CU NIPDAU
N / A for Pkg Type
Lead/Ball Finish
MSL Peak Temp (3)
20
Pb-Free
(RoHS)
TBD
Call TI
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
SN74ALS541N3
OBSOLETE
PDIP
N
20
SN74ALS541NE4
ACTIVE
PDIP
N
20
SN74ALS541NSR
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541NSRE4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74ALS541NSRG4
ACTIVE
SO
NS
20
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SNJ54ALS541FK
ACTIVE
LCCC
FK
20
1
TBD
SNJ54ALS541J
ACTIVE
CDIP
J
20
1
TBD
The marketing status values are defined as follows:
Addendum-Page 2
Call TI
POST-PLATE N / A for Pkg Type
A42 SNPB
N / A for Pkg Type
PACKAGE OPTION ADDENDUM
www.ti.com
9-Oct-2007
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.
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 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.
Addendum-Page 3
PACKAGE MATERIALS INFORMATION
www.ti.com
11-Mar-2008
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SN74ALS540DWR
SOIC
SPQ
Reel
Reel
Diameter Width
(mm) W1 (mm)
DW
20
2000
330.0
24.4
A0 (mm)
B0 (mm)
K0 (mm)
P1
(mm)
W
Pin1
(mm) Quadrant
10.8
13.0
2.7
12.0
24.0
Q1
SN74ALS541-1DBR
SSOP
DB
20
2000
330.0
16.4
8.2
7.5
2.5
12.0
16.0
Q1
SN74ALS541-1DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.0
2.7
12.0
24.0
Q1
SN74ALS541DBR
SSOP
DB
20
2000
330.0
16.4
8.2
7.5
2.5
12.0
16.0
Q1
SN74ALS541DWR
SOIC
DW
20
2000
330.0
24.4
10.8
13.0
2.7
12.0
24.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
11-Mar-2008
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
SN74ALS540DWR
SOIC
DW
20
2000
346.0
346.0
41.0
SN74ALS541-1DBR
SSOP
DB
20
2000
346.0
346.0
33.0
SN74ALS541-1DWR
SOIC
DW
20
2000
346.0
346.0
41.0
SN74ALS541DBR
SSOP
DB
20
2000
346.0
346.0
33.0
SN74ALS541DWR
SOIC
DW
20
2000
346.0
346.0
41.0
Pack Materials-Page 2
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
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MECHANICAL DATA
MLCC006B – OCTOBER 1996
FK (S-CQCC-N**)
LEADLESS CERAMIC CHIP CARRIER
28 TERMINAL SHOWN
18
17
16
15
14
13
NO. OF
TERMINALS
**
12
19
11
20
10
A
B
MIN
MAX
MIN
MAX
20
0.342
(8,69)
0.358
(9,09)
0.307
(7,80)
0.358
(9,09)
28
0.442
(11,23)
0.458
(11,63)
0.406
(10,31)
0.458
(11,63)
21
9
22
8
44
0.640
(16,26)
0.660
(16,76)
0.495
(12,58)
0.560
(14,22)
23
7
52
0.739
(18,78)
0.761
(19,32)
0.495
(12,58)
0.560
(14,22)
24
6
68
0.938
(23,83)
0.962
(24,43)
0.850
(21,6)
0.858
(21,8)
84
1.141
(28,99)
1.165
(29,59)
1.047
(26,6)
1.063
(27,0)
B SQ
A SQ
25
5
26
27
28
1
2
3
4
0.080 (2,03)
0.064 (1,63)
0.020 (0,51)
0.010 (0,25)
0.020 (0,51)
0.010 (0,25)
0.055 (1,40)
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.045 (1,14)
0.035 (0,89)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
4040140 / D 10/96
NOTES: A.
B.
C.
D.
E.
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
This package can be hermetically sealed with a metal lid.
The terminals are gold plated.
Falls within JEDEC MS-004
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
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