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IN74HC251A

IK Semiconductor
Part Number IN74HC251A
Manufacturer IK Semiconductor
Description 8-1 Data Selector/Multiplexer
Published Dec 7, 2005
Detailed Description TECHNICAL DATA IN74HC251A 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS Th...
Datasheet PDF File IN74HC251A PDF File

IN74HC251A
IN74HC251A

Overview
TECHNICAL DATA IN74HC251A 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS The IN74HC251A is identical in pinout to the LS/ALS251.
The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
The device selects one of the eight binary Data Inputs, as determined by the Address Inputs.
The Output Enable pin must be at a low level for the selected data to appear at the outputs.
If Output Enable is high, the Y and the Y outputs are in the high-impedance state.
This 3-State feature allows the IN74HC251A to be used in bus-oriented systems.
• 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 IN74HC251AN Plastic IN74HC251AD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs A2 X L L L L PIN 16 =VCC PIN...


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