Specification	SN74AHC138D

Circuit	1 x 3:8
Current - Output High, Low [custom]	8 mA
Current - Output High, Low [custom]	8 mA
Independent Circuits	1
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Type	Decoder/Demultiplexer
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	2 V
Voltage Supply Source	Single Supply

SN74AHC138 Series

2V-to-5.5V 3-line to 8-line decoder and demultiplexer

Part	Package / Case	Package / Case [x]	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Type	Voltage Supply Source	Circuit	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Supplier Device Package	Independent Circuits	Package / Case [custom]	Package / Case [custom]	Package / Case	Package / Case
Texas Instruments SN74AHC138DRE4	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-SOIC	1
Texas Instruments SN74AHC138DR	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-SOIC	1
Texas Instruments SN74AHC138PW	16-TSSOP	0.173 in	4.4 mm	85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-TSSOP	1
Texas Instruments SN74AHC138D	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-SOIC	1
Texas Instruments SN74AHC138DG4	16-SOIC	0.154 in	3.9 mm	85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-SOIC	1
Texas Instruments SN74AHC138DBR	16-SSOP			85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-SSOP	1	0.209 in	5.3 mm
Texas Instruments SN74AHC138PWRG4	16-TSSOP	0.173 in	4.4 mm	85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-TSSOP	1
Texas Instruments SN74AHC138RGYR	16-VFQFN Exposed Pad			85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-VQFN (4x3.5)	1
Texas Instruments SN74AHC138N	16-DIP			85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Through Hole	16-PDIP	1			0.3 in	7.62 mm
Texas Instruments SN74AHC138NSR	16-SOIC			85 °C	-40 °C	Decoder/Demultiplexer	Single Supply	1 x 3:8	8 mA	8 mA	5.5 V	2 V	Surface Mount	16-SO	1			0.209 "	5.3 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.82
		10	$ 1.15
		25	$ 0.98
Texas Instruments	TUBE	1	$ 0.86
		100	$ 0.66
		250	$ 0.49
		1000	$ 0.35

Description

General part information

SN74AHC138 Series

The SNx4AHC138 decoders/demultiplexers are designed for high-performance memory-decoding and data-routing applications that require 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 utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.

Documents

Technical documentation and resources

Texas Instruments Little Logic Application Report

Application note

Implications of Slow or Floating CMOS Inputs (Rev. E)

Application note

Benefits & Issues of Migrating 5-V and 3.3-V Logic to Lower-Voltage Supplies (Rev. A)

Application note

Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A)

Application note

Logic Guide (Rev. AB)

Selection guide

SN74AHC138D

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SN74AHC138D

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Technical Specifications

SN74AHC138 Series

Pricing

Description

SN74AHC138 Series

Documents

Texas Instruments Little Logic Application Report

Implications of Slow or Floating CMOS Inputs (Rev. E)

Benefits & Issues of Migrating 5-V and 3.3-V Logic to Lower-Voltage Supplies (Rev. A)

TI IBIS File Creation, Validation, and Distribution Processes

Selecting the Right Level Translation Solution (Rev. A)

SNx4AHC138 3-Line to 8-Line Decoders/Demultiplexers datasheet (Rev. N)

Live Insertion

How to Select Little Logic (Rev. A)

Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices

Design Summary for WCSP Little Logic (Rev. B)

Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)

Military Advanced High-Speed CMOS Logic (AHC/AHCT) (Rev. C)

LOGIC Pocket Data Book (Rev. B)

Little Logic Guide 2018 (Rev. G)

CMOS Power Consumption and CPD Calculation (Rev. B)

Advanced High-Speed CMOS (AHC) Logic Family (Rev. C)

AHC/AHCT Designer's Guide February 2000 (Rev. D)

Semiconductor Packing Material Electrostatic Discharge (ESD) Protection

Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A)

Logic Guide (Rev. AB)

SN74AHC138 Series