IN74HC253A
TECHNICAL DATA
Dual 4-Input Data Selector/Multiplexer with 3-State Otputs
High-Performance Silicon-Gate CMOS
The IN74HC253A is identical in pinout to the LS/ALS253. The device inputs are patible with standard CMOS outputs; with pullup resistors, they are patible with LS/ALSTTL outputs. The Address Inputs select one of four Data Inputs from each multiplexer. Each multiplexer has an active-low Output Enable control and a three-state noninverting output.
- 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
ORDERING INFORMATION IN74HC253AN Plastic IN74HC253AD SOIC TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs A1 X L L H H A0 X L H L H OE H L L L L Output Y Z D0 D1 D2 D3 w w w
.d e e h s a t a
. u t4 m o c
PIN 16 =VCC PIN 8 = GND
D0,D1...D3=the level of the respective Data Input Z = high impedance X =...
