SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Designed Specifically for High-Speed
Memory Decoders and Data Transmission
Systems
D
Incorporate Three Enable Inputs to Simplify
Cascading and/or Data Reception
D
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
description
The ′ALS138A and ′AS138 are 3-line to 8-line
decoders/demultiplexers designed for high-
performance memory-decoding or data-routing
applications requiring very short propagation
delay times. In high-performance systems, these
devices can be used to minimize the effects of
system decoding. When employed with
high-speed memories with a fast enable circuit,
the delay times of the decoder and the enable time
of the memory are usually less than the typical
access time of the memory. The effective system
delay introduced by the Schottky-clamped system
decoder is negligible.
The conditions at the binary-select (A, B, and C)
inputs and the three enable (G1, G2A, and G2B)
inputs select one of eight output lines. Two
active-low and one active-high enable inputs
reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without
external inverters and a 32-line decoder requires only one inverter . An enable input can be used as a data input
for demultiplexing applications.
The SN54ALS138A and SN54AS138 are characterized for operation over the full military temperature range
of –55°C to 125°C. The SN74ALS138A and SN74AS138 are characterized for operation from 0°C to 70°C.
Copyright 1996, 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.
SN54ALS138A, SN54AS138 ...J PACKAGE
SN74ALS138A, SN74AS138 ...D OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
910111213
4
5
6
7
8
18
17
16
15
14
Y1
Y2
NC
Y3
Y4
C
G2A
NC
G2B
G1
SN54ALS138A, SN54AS138 . . . FK PACKAGE
(TOP VIEW)
B
A
NC
Y6
Y5 Y0
Y7
GND
NC
NC – No internal connection
VCC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A
B
C
G2A
G2B
G1
Y7
GND
VCC
Y0
Y1
Y2
Y3
Y4
Y5
Y6
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.
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
OUTPUTS
ENABLE SELECT
OUTPUTS
G1 G2A G2B C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
X H X X X X H H H H H H H H
XXHXXXHHHHHHHH
LXXXXXHHHHHHHH
HLLLLLLHHHHHHH
HLLLLHHLHHHHHH
HLLLHLHHLHHHHH
HLLLHHHHHLHHHH
HLLHLLHHHHLHHH
HLLHLHHHHHHLHH
HLLHHLHHHHHHLH
HLLHHHHHHHHHHL
logic symbols (alternatives)†
BIN/OCT
1
1
A
2
2
B
4
3
C
4
5
6
G1
Y0
15
0
&
EN
Y1
14
1
Y2
13
2
Y3
12
3
Y4
11
4
Y5
10
5
Y6
9
6
Y7
7
7
DMUX
0
1
A2
B
2
3
C
4
5
6
G1
Y0
15
0
&
Y1
14
1
Y2
13
2
Y3
12
3
Y4
11
4
Y5
10
5
Y6
9
6
Y7
7
7
G7
0
G2A
G2B
G2A
G2B
†These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
G2B
G2A
G1
C
B
A
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Data
Outputs
Select
Inputs
Enable
Inputs
1
2
3
6
4
5
15
14
13
12
11
10
9
7
Pin numbers shown are for the D, J, and N packages.
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54ALS138A –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS138A 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 af fect device reliability.
recommended operating conditions
SN54ALS138A SN74ALS138A
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V
VIH High-level input voltage 2 2 V
VIL Low-level input voltage 0.7 0.8 V
IOH High-level output current –0.4 –0.4 mA
IOL Low-level output current 4 8 mA
TAOperating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS138A SN74ALS138A
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP‡MAX MIN TYP‡MAX
UNIT
VIK VCC = 4.5 V, II = –18 mA –1.5 –1.5 V
VOH VCC = 4.5 V, IOH = –0.4 mA VCC –2 VCC –2 V
VOL
VCC =45V
IOL = 4 mA 0.25 0.4 0.25 0.4
V
V
OL
V
CC =
4
.
5
V
IOL = 8 mA 0.35 0.5
V
IIVCC = 5.5 V, VI = 7 V 0.1 0.1 mA
IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA
IIL VCC = 5.5 V, VI = 0.4 V –0.1 –0.1 mA
IO§VCC = 5.5 V, VO = 2.25 V –20 –112 –30 –112 mA
ICC VCC = 5.5 V 5 10 5 10 mA
‡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
)
TO
(
OUTPUT
)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX¶UNIT
(INPUT)
(OUTPUT)
SN54ALS138A SN74ALS138A
MIN MAX MIN MAX
tPLH
ABC
Any Y
228 5 22
ns
tPHL
A
,
B
,
C
An
y
Y
6 22 6 18
ns
tPLH
GorG
Any Y
222 3 17
ns
tPHL
G
or
G
An
y
Y
4 21 4 17
ns
¶For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54AS138 –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74AS138 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 af fect device reliability.
recommended operating conditions
SN54AS138 SN74AS138
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V
VIH High-level input voltage 2 2 V
VIL Low-level input voltage 0.8 0.8 V
IOH High-level output current –2 –2 mA
IOL Low-level output current 20 20 mA
TAOperating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS138 SN74AS138
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP‡MAX MIN TYP‡MAX
UNIT
VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V
VOH VCC = 4.5 V to 5.5 V, IOH = –2 mA VCC –2 VCC –2 V
VOL VCC = 4.5 V, IOL = 20 mA 0.35 0.5 0.35 0.5 V
IIVCC = 5.5 V, VI = 7 V 0.1 0.1 mA
IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA
IIL VCC = 5.5 V, VI = 0.4 V –0.5 –0.5 mA
IO§VCC = 5.5 V, VO = 2.25 V –30 –112 –30 –112 mA
ICCH VCC = 5.5 V 12 17.5 12 17.5 mA
ICCL VCC = 5.5 V 14 20 14 20 mA
‡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.
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Figure 1)
PARAMETER FROM
(
INPUT
)
TO
(
OUTPUT
)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500 Ω,
TA = MIN to MAX†UNIT
(INPUT)
(OUTPUT)
SN54AS138 SN74AS138
MIN MAX MIN MAX
tPLH
ABC
Any Y
211 2 10
ns
tPHL
A
,
B
,
C
An
y
Y
211 2 9.5
ns
tPLH
G1
Any Y
211.5 2 10
ns
tPHL
G1
An
y
Y
211 2 10
ns
tPLH
G2
Any Y
2 9 2 7.5
ns
tPHL
G2
An
y
Y
2 10 2 8.5
ns
†For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SDAS055E – APRIL 1982 – REVISED JULY 1996
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
tPHZ
tPLZ
tPHL tPLH
0.3 V
tPZL
tPZH
tPLH tPHL
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
From Output
Under Test Test
Point
R1
S1
CL
(see Note A)
7 V
1.3 V
1.3 V1.3 V
3.5 V
3.5 V
0.3 V
0.3 V
th
tsu
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Timing
Input
Data
Input
1.3 V 1.3 V 3.5 V
3.5 V
0.3 V
0.3 V
High-Level
Pulse
Low-Level
Pulse
tw
VOLTAGE WAVEFORMS
PULSE DURATIONS
Input
Out-of-Phase
Output
(see Note C)
1.3 V 1.3 V
1.3 V1.3 V
1.3 V 1.3 V
1.3 V1.3 V
1.3 V
1.3 V
3.5 V
3.5 V
0.3 V
0.3 V
VOL
VOH
VOH
VOL
Output
Control
(low-level
enabling)
W aveform 1
S1 Closed
(see Note B)
W aveform 2
S1 Open
(see Note B)
[
0 V
VOH
VOL
[
3.5 V
In-Phase
Output
0.3 V
1.3 V 1.3 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
R2
VCC
RL
Test
Point
From Output
Under Test
CL
(see Note A)
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
From Output
Under Test Test
Point
CL
(see Note A) RL
RL = R1 = R2
NOTES: A. CL includes probe and jig capacitance.
B. W aveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
W aveform 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
PACKAGE OPTION ADDENDUM
www.ti.com 25-Jan-2012
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
5962-86866012A ACTIVE LCCC FK 20 1 TBD Call TI Call TI
5962-8686601FA ACTIVE CFP W 16 1 TBD Call TI Call TI
JM38510/37701B2A ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
JM38510/37701BEA ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
M38510/37701B2A ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
M38510/37701BEA ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN54ALS138AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN54AS138J ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SN74ALS138AD ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ADE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ADG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ADR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ADRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ADRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138AN ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS138ANE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74ALS138ANSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ANSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74ALS138ANSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138D ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138DE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com 25-Jan-2012
Addendum-Page 2
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
SN74AS138DG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138DR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138DRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138DRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138N ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74AS138N3 OBSOLETE PDIP N 16 TBD Call TI Call TI
SN74AS138NE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type
SN74AS138NSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138NSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74AS138NSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SNJ54ALS138AFK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
SNJ54ALS138AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SNJ54ALS138AW ACTIVE CFP W 16 1 TBD A42 N / A for Pkg Type
SNJ54AS138FK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
SNJ54AS138J ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
(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.
PACKAGE OPTION ADDENDUM
www.ti.com 25-Jan-2012
Addendum-Page 3
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.
OTHER QUALIFIED VERSIONS OF SN54ALS138A, SN54AS138, SN74ALS138A, SN74AS138 :
•Catalog: SN74ALS138A, SN74AS138
•Military: SN54ALS138A, SN54AS138
NOTE: Qualified Version Definitions:
•Catalog - TI's standard catalog product
•Military - QML certified for Military and Defense Applications
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN74ALS138ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
SN74ALS138ANSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
SN74AS138DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
SN74AS138NSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN74ALS138ADR SOIC D 16 2500 333.2 345.9 28.6
SN74ALS138ANSR SO NS 16 2000 367.0 367.0 38.0
SN74AS138DR SOIC D 16 2500 333.2 345.9 28.6
SN74AS138NSR SO NS 16 2000 367.0 367.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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