Quad. 2-to-1-line Data Selectors/Multiplexers
HD74HC257
Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
REJ03D0601–0200 (Previous A...
Description
HD74HC257
Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
REJ03D0601–0200 (Previous ADE-205-478)
Rev.2.00 Jan 31, 2006
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: ICC (static) = 4 µA max (Ta = 25°C) Ordering Information
Part Name
Package Type
Package Code (Previous Code)
Package Abbreviation
HD74HC257P
DILP-16 pin
PRDP0016AE-B (DP-16FV)
P
HD74HC257FPEL SOP-16 pin (J...
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