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74VHC157CW Datasheet PDF - Fairchild Semiconductor

Part Number74VHC157CW Fairchild
Fairchild Semiconductor Fairchild
DescriptionQuad 2-Input Multiplexer
74VHC157CW Datasheet PDF : 74VHC157CW pdf   
74ACT157SCX image

General Description
The VHC157 is an advanced high speed CMOS Quad 2-Channel Multiplexer fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.
It consists of four 2-input digital multiplexers with common select and enable inputs. When the ENABLE input is held “H” level, selection of data is inhibited and all the outputs become “L” level. The SELECT decoding determines whether the I0x or I1x inputs get routed to their correspond ing outputs.
An Input protection circuit ensures that 0V to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and on two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.

Features
■ High Speed: tPD = 4.1 ns (typ) at VCC = 5V
■ Low power dissipation: ICC = 4 µA (max.) at TA = 25°C
■ High noise immunity: VNIH = VNIL = 28% VCC (min.)
■ Power down protection is provided on all inputs
■ Low noise: VOLP = 0.8V (max.)
■ Pin and function compatible with 74HC157

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