MC74HC157A_14 Datasheet, PDF (1/7 Pages) ON Semiconductor – Quad 2-Input Data Selectors/Multiplexers

MC74HC157A
Quad 2-Input Data
Selectors/Multiplexers
High−Performance Silicon−Gate CMOS
The MC74HC157A is identical in pinout to the LS157. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
This device routes 2 nibbles (A or B) to a single port (Y) as
determined by the Select input. The data is presented at the outputs in
noninverted form. A high level on the Output Enable input sets all four
Y outputs to a low level.
Features
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 mA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• Chip Complexity: 82 FETs or 20.5 Equivalent Gates
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
NIBBLE
A INPUTS
NIBBLE
B INPUTS
A0 ²
A1 ⁵
A2 ¹¹
A3 ¹⁴
B0 ³
B1 ⁶
B2 ¹⁰
B3 ¹³
1
SELECT
OUTPUT ¹⁵
ENABLE
4 _Y0
7 _Y1
9 _Y2
12 _Y3
DATA
OUTPUTS
PIN 16 = V_CC
PIN 8 = GND
Figure 1. Logic Diagram
© Semiconductor Components Industries, LLC, 2014
1
August, 2014 − Rev. 12
http://onsemi.com
SOIC−16
D SUFFIX
CASE 751B
TSSOP−16
DT SUFFIX
CASE 948F
PIN ASSIGNMENT
SELECT 1
A0 2
B0 3
Y0 4
A1 5
B1 6
Y1 7
GND 8
16 V_CC
15
OUTPUT
ENABLE
14 A3
13 B3
12 Y3
11 A2
10 B2
9 Y2
MARKING DIAGRAMS
16
HC157AG
AWLYWW
1
16
HC
157A
ALYWG
G
1
SOIC−16
TSSOP−16
A
L, WL
Y, YY
W, WW
G or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
FUNCTION TABLE
Inputs
Output
Outputs
Enable Select Y0 − Y3
H
X
L
L
L A0 −A3
L
H B0 −B3
X = don’t care
A0−A3, B0−B3 = the levels of
the respective Data−Word
Inputs.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
Publication Order Number:
MC74HC157A/D