MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Quad 2-Input Data Selectors/Multiplexers
High–Performance Silicon–Gate CMOS
The M...
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Quad 2-Input Data Selectors/Multiplexers
High–Performance Silicon–Gate
CMOS
The MC54/74HC157A 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.
The HC157A is similar in function to the HC257 which has 3–state outputs.
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 µA 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
LOGIC DIAGRAM
NIBBLE A INPUTS
NIBBLE B INPUTS
A0 2 A1 5 A2 11 A3 14
B0 3 B1 6 B2 10 B3 13
4 Y0
7 Y1 9 Y2 12 Y3
DATA OUTPUTS
SELECT
OUTPUT ENABLE
1 15
PIN 16 = VCC PIN 8 = GND
MC54/74HC157A
16 1
J SUFFIX CERAMIC PACKAGE
CASE 620–10
16 1
16 1
N SUFFIX PLASTIC PACKAGE
CASE 648–08
D SUFFIX SOIC PACKAGE CASE 751B–05
16 1
DT SUFFIX TSSOP PACKAGE
CASE 948F–01
ORDERING INFORMATION
MC54HCXXXAJ MC74HCXXXAN MC74HCXXXAD MC74HCXXXADT
Ceramic Plastic SOIC TSSOP
PIN ASSIGNMENT
SELECT A0 B0 Y0 A1 B1 Y1
GND
1 2 3 4 5 6 7 8
16 VCC
15
OUTPUT ENABLE
14...