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Home > Semiconductors > ICs > Logic ICs > HARRIS 74HC251 IC 8-INPUT MUX 3-STATE

HARRIS 74HC251 IC 8-INPUT MUX 3-STATE

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Harris - Harris 74Hc251 IC 8-INPUT MUX 3-STATE

HARRIS 74HC251 IC 8-INPUT MUX 3-STATE

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HARRIS 74HC251 Encoders, Decoders, Multiplexers & Demultiplexers 8-INPUT MULTIPLEXER 3STATE

The MC54/74HC251 is identical in pinout to the LS251. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Output Enable pin must be a low level for the selected data to appear at the outputs. If Output Enable is high, both the Y and the Y outputs are in the high­impedance state. This 3­state feature allows the to be used in bus­oriented systems. The HC251 is similar in function to the HC151 which does not have 3­state outputs. Output Drive Capability: 10 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 6 V Low Input Current: 1 µA High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 134 FETs or 33.5 Equivalent Gates

In 1988, Harris acquired GE’s semiconductor business, which at this time, also incorporated the Intersil and RCA semiconductor businesses. These were combined with Harris' existing semiconductor businesses, which were then spun off in 1999 as an independent company, under the Intersil name.

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74HC251
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