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CD74HC138MT

Signal Switches, Multiplexers, DecodersSOIC

IC DECODER/DEMUX 1X3:8 16SOIC

CD74HC138MT is a high-speed CMOS 3-to-8 line decoder/demultiplexer in a 16-pin SOIC package, operating at 2V to 6V with a temperature range of -55°C to 125°C. It features three enable inputs for cascading and a typical propagation delay of 13 ns.Checked against the datasheet

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Technical parameters

Datasheet-verified parameters

26 items

Parameter	Value and test conditions	Source
Package	SOIC (16), 9.90 mm × 3.90 mm
Operating Temperature	-55 °C to 125 °C
Grade	Catalog
RoHS	Call TI
Recommended Supply Voltage Range (HC types)	Min: 2 V, Max: 6 V
Absolute Maximum Supply Voltage	Min: -0.5 V, Max: 7 V
High-level Input Voltage (VCC=2V)	Min: 1.5 V
High-level Input Voltage (VCC=4.5V)	Min: 3.15 V
High-level Input Voltage (VCC=6V)	Min: 4.2 V
Low-level Input Voltage (VCC=2V)	Max: 0.5 V
Low-level Input Voltage (VCC=4.5V)	Max: 1.35 V
Low-level Input Voltage (VCC=6V)	Max: 1.8 V
High-level Output Voltage (VCC=2V, IOH=-20μA)	Min: 1.9 V
High-level Output Voltage (VCC=4.5V, IOH=-20μA)	Min: 4.4 V
High-level Output Voltage (VCC=6V, IOH=-20μA)	Min: 5.9 V
Low-level Output Voltage (VCC=2V, IOL=20μA)	Max: 0.1 V
Low-level Output Voltage (VCC=4.5V, IOL=20μA)	Max: 0.1 V
Low-level Output Voltage (VCC=6V, IOL=20μA)	Max: 0.1 V
Input Leakage Current (VI=VCC or GND, VCC=6V)	Max: ±1 μA (-55°C to 125°C)
Supply Current (VI=VCC or GND, VCC=6V)	Typ: 8 μA, Max: 160 μA (-55°C to 125°C)
Typical Propagation Delay	13 ns at VCC = 5 V, CL = 15 pF, TA = 25 °C
Fanout (Bus driver outputs)	15 LSTTL loads
Fanout (Standard outputs)	10 LSTTL loads
Junction Temperature	Max: 150 °C
Storage Temperature Range	Min: -65 °C, Max: 150 °C
Noise Immunity (HC types, VCC=5V)	NIL = 30% of VCC, NIH = 30% of VCC

All parameters (15)ExpandCollapse

Power
Current - Output High, Low	5.2mA, 5.2mA
Voltage - Supply	2V ~ 6V
Voltage Supply Source	Single Supply
Environment and package
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
Package	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®
Package / Case	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package	16-SOIC
Other
Base Product Number	74HC138
Circuit	1 x 3:8
Independent Circuits	1
Mfr	Texas Instruments
Product Status	Discontinued at Digi-Key
Series	74HC
Type	Decoder/Demultiplexer

Pinout and package

Pin	Name	Function	Source
>= 1		A0, Address select 0, Input
>= 10		Y5, Output 5, Output
>= 11		Y4, Output 4, Output
>= 12		Y3, Output 3, Output
>= 13		Y2, Output 2, Output
>= 14		Y1, Output 1, Output
>= 15		Y0, Output 0, Output
>= 16		VCC, Positive supply
>= 2		A1, Address select 1, Input
>= 3		A2, Address select 2, Input
>= 4		G0, Output strobe 0, active low, Input
>= 5		G1, Output strobe 1, active low, Input
>= 6		G2, Output strobe 2, Input
>= 7		Y7, Output 7, Output
>= 8		GND, Ground
>= 9		Y6, Output 6, Output

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DatasheetDatasheet · 1.2 MB · 2026-10-29

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