SNx4HC157 Quadruple 2-Line to 1-Line Data Selectors/Multiplexers

1 Features

Wide operating voltage range of 2V to 6V
Outputs can drive up to 15 LSTTL loads
Low power consumption, 80µA max I_CC
Typical t_pd = 11ns
±6mA output drive at 5V
Low input current of 1µA max

2 Description

The SNx4HC157 contains four data selectors/multiplexers to select one of two data sources. All channels are controlled by the same address select (A/B) input, and strobe (G) input. A high level at the strobe terminal forces all outputs low.

Device Information

PART NUMBER	PACKAGE⁽¹⁾	BODY SIZE (NOM)⁽²⁾
SN74HC157	D (SOIC, 16)	9.90 mm × 3.90 mm
	DB (SSOP, 16)	6.20 mm × 5.30 mm
	N (PDIP, 16)	19.31 mm × 6.35 mm
	NS (SOP, 16)	6.20 mm × 5.30 mm
	PW (TSSOP, 16)	5.00 mm × 4.40 mm
SN54HC157	J (CDIP, 16)	24.38 mm × 6.92 mm
	FK (LCCC, 20)	8.89 mm × 8.45 mm
	W (CFP, 16)	10.16 mm × 6.73 mm

(1) For more information, see Section 10.

(2) The body size (length × width) is a nominal value and does not include pins.

Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.

Functional Block Diagram

3 Pin Configuration and Functions

J, D, DB, N, NS, or PW package
16-Pin CDIP, SOIC, SSOP, PDIP, SO, TSSOP
Top View

FK package
20-Pin LCCC
Top View

Pin Functions

PIN		TYPE⁽¹⁾	DESCRIPTION
SOIC or TSSOP NO.	NAME	TYPE⁽¹⁾	DESCRIPTION
1	A/B	I	Address select
2	1A	I	Channel 1, data input A
3	1B	I	Channel 1, data input B
4	1Y	I	Channel 1, data output
5	2A	O	Channel 2, data input A
6	2B	O	Channel 2, data input B
7	2Y	I	Channel 2, data output
8	GND	—	Ground
9	3Y	I	Channel 3, data output
10	3B	I	Channel 3, data input B
11	3A	I	Channel 3, data input A
12	4Y	I	Channel 4, data output
13	4B	I	Channel 4, data input B
14	4A	I	Channel 4, data input A
15	G	I	Output strobe, active low
16	V_CC	—	Positive supply

(1) I = input, O = output, P = power, FB = feedback, GND = ground, N/A = not applicable