SN74HC138 DECODERS/DEMULTIPLEXERS Datasheet

SN74HC138 Datasheet, PDF, Equivalent


Part Number

SN74HC138

Description

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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SN74HC138
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SN54HC138, SN74HC138
SCLS107F – DECEMBER 1982 – REVISED SEPTEMBER 2016
SNx4HC138 3-Line To 8-Line Decoders/Demultiplexers
1 Features
1 Targeted Specifically for High-Speed Memory
Decoders and Data-Transmission Systems
• Wide Operating Voltage Range (2 V to 6 V)
• Outputs Can Drive Up To 10 LSTTL Loads
• Low Power Consumption, 80-µA Maximum ICC
• Typical tpd = 15 ns
• ±4-mA Output Drive at 5 V
• Low Input Current of 1-µA Maximum
• Active Low Outputs ( Selected Output is Low)
• Incorporate Three Enable Inputs to Simplify
Cascading or Data Reception
2 Applications
• LED Displays
• Servers
• White Goods
• Power Infrastructure
• Building Automation
• Factory Automation
3 Description
The SNx4HC138 devices are designed to be used in
high-performance memory-decoding or data-routing
applications requiring very short propagation delay
times. In high-performance memory systems, these
decoders can be used to minimize the effects of
system decoding. When employed with high-speed
memories using a fast enable circuit, the delay times
of these decoders and the enable time of the memory
are usually less than the typical access time of the
memory. This means that the effective system delay
introduced by the decoders is negligible.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN74HC138D
SOIC (16)
9.90 mm x 3.90 mm
SN74HC138DB SSOP (16)
6.20 mm x 5.30 mm
SN74HC138N
PDIP (16)
19.32 mm x 6.35 mm
SN74HC138NS SO (16)
10.20 mm x 5.30 mm
SN74HC138PW TSSOP (16)
5.00 mm x 4.40 mm
SN54HC138J
CDIP (16)
21.34 mm x 6.92 mm
SN54HC138W
CFP (16)
10.16 mm x 6.73 mm
SN54HC138FK LCCC (20)
8.89 mm x 8.89 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
1
A
2
B
15
Y0
14
Y1
13
Y2
3
C
12
Y3
11
Y4
6
G1
4
G2A
10
Y5
9
Y6
7
Y7
5
G2B
Copyright © 2016, Texas Instruments Incorporated
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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.

SN74HC138
SN54HC138, SN74HC138
SCLS107F – DECEMBER 1982 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings: SN74HC138 ....................................... 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information: SN74HC138............................ 5
6.5 Thermal Information: SN54HC138............................ 5
6.6 Electrical Characteristics........................................... 5
6.7 Electrical Characteristics: SN74HC138 .................... 6
6.8 Electrical Characteristics: SN54HC138 .................... 6
6.9 Switching Characteristics .......................................... 6
6.10 Switching Characteristics: SN74HC138.................. 7
6.11 Switching Characteristics: SN54HC138.................. 7
6.12 Typical Characteristic.............................................. 7
7 Parameter Measurement Information .................. 8
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................... 9
8.4 Device Functional Modes........................................ 10
9 Application and Implementation ........................ 11
9.1 Application Information............................................ 11
9.2 Typical Application .................................................. 11
10 Power Supply Recommendations ..................... 12
11 Layout................................................................... 12
11.1 Layout Guidelines ................................................. 12
11.2 Layout Example .................................................... 12
12 Device and Documentation Support ................. 13
12.1 Documentation Support ........................................ 13
12.2 Related Links ........................................................ 13
12.3 Receiving Notification of Documentation Updates 13
12.4 Community Resources.......................................... 13
12.5 Trademarks ........................................................... 13
12.6 Electrostatic Discharge Caution ............................ 13
12.7 Glossary ................................................................ 13
13 Mechanical, Packaging, and Orderable
Information ........................................................... 13
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (September 2003) to Revision F
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
• Deleted Ordering Information table; see POA at the end of the data sheet........................................................................... 1
• Changed RθJA values from 73 to 87.3 (D), from 82 to 104.3 (DB), from 67 to 54.8 (N), from 64 to 91.1 (NS), and
from 108 to 114.6 (PW) .......................................................................................................................................................... 5
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Copyright © 1982–2016, Texas Instruments Incorporated
Product Folder Links: SN54HC138 SN74HC138


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community SN54HC138, SN74HC138 SCLS107 F – DECEMBER 1982 – REVISED SEPTEMB ER 2016 SNx4HC138 3-Line To 8-Line Deco ders/Demultiplexers 1 Features •1 Ta rgeted Specifically for High-Speed Memo ry Decoders and Data-Transmission Syste ms • Wide Operating Voltage Range (2 V to 6 V) • Outputs Can Drive Up To 1 0 LSTTL Loads • Low Power Consumption , 80-µA Maximum ICC • Typical tpd = 15 ns • ±4-mA Output Drive at 5 V Low Input Current of 1-µA Maximum Active Low Outputs ( Selected Output is Low) • Incorporate Three Enable In puts to Simplify Cascading or Data Rece ption 2 Applications • LED Displays Servers • White Goods • Power In frastructure • Building Automation Factory Automation 3 Description The SNx4HC138 devices are designed to be u sed in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used .
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