Specification	MC74HC138ADR2G-Q

Circuit	1 x 3:8
Current - Output High, Low [custom]	5.2 mA
Current - Output High, Low [custom]	5.2 mA
Independent Circuits	1
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °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]	6 V
Voltage - Supply [Min]	2 V
Voltage Supply Source	Single Supply

MC74HC138A Series

1-of-8 Decoder/Demultiplexer

Part	Independent Circuits	Supplier Device Package	Type	Operating Temperature [Min]	Operating Temperature [Max]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Mounting Type	Package / Case	Package / Case [x]	Package / Case [y]	Voltage Supply Source	Circuit	Voltage - Supply [Min]	Voltage - Supply [Max]
ON Semiconductor MC74HC138ADR2G-Q	1	16-SOIC	Decoder/Demultiplexer	-55 °C	125 °C	5.2 mA	5.2 mA	Surface Mount	16-SOIC	0.154 in	3.9 mm	Single Supply	1 x 3:8	2 V	6 V
ON Semiconductor MC74HC138ADTR2G-Q	1	16-TSSOP	Decoder/Demultiplexer	-55 °C	125 °C	5.2 mA	5.2 mA	Surface Mount	16-TSSOP	0.173 in	4.4 mm	Single Supply	1 x 3:8	2 V	6 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.58
		10	$ 0.49
		25	$ 0.46
		100	$ 0.34
		250	$ 0.29
		500	$ 0.28
		1000	$ 0.20
	Digi-Reel®	1	$ 0.58
		10	$ 0.49
		25	$ 0.46
		100	$ 0.34
		250	$ 0.29
		500	$ 0.28
		1000	$ 0.20
	Tape & Reel (TR)	2500	$ 0.19
		5000	$ 0.18
		12500	$ 0.17
		25000	$ 0.16
ON Semiconductor	N/A	1	$ 0.08

Description

General part information

MC74HC138A Series

The MC74HC138A is identical in pinout to the LS138. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The HC138A decodes a three bit Address to one of eight active low outputs. This device features three Chip Select inputs, two active low and one active high to facilitate the demultiplexing, cascading, and chip selecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states.