Part Number
|
HC257 |
Manufacturer
|
Hitachi Semiconductor |
Description
|
Quad. 2-to-1-line Data Selectors/Multiplexers(with noninverted 3-state outputs) |
Published
|
Mar 23, 2005 |
Detailed Description
|
HD74HC257
Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
Description
The large output...
|
Datasheet
|
HC257
|
Overview
HD74HC257
Quad.
2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
Description
The large output drive capability coupled with the 3-state feature make this device ideal for interfacing with bus lines in a bus organized system.
When the output control input line is taken high, the outputs of all four multiplexers are sent into a high impedance state.
When the output control line is low, the select input chooses whether the A or B input is used.
Features
• • • • • High Speed Operation: tpd (Data to Y) = 10.
5 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current:...
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