74HC-HCT153中文资料SYC数据手册PDF规格书

FEATURES

· Non-inverting output

· Separate enable for each output

· Common select inputs

· See ‘253” for 3-state version

· Permits multiplexing from n lines to

1 line

· Enable line provided for cascading

(n lines to 1 line)

· Output capability: standard

· ICC category: MSI

GENERAL DESCRIPTION

The 74HC/HCT153 are high-speed

Si-gate CMOS devices and are pin

compatible with low power Schottky

TTL (LSTTL). They are specified in

compliance with JEDEC standard

no. 7A.

The 74HC/HCT153 have two

identical 4-input multiplexers which

select two bits of data from up to four

sources selected by common data

select inputs (S0, S1). The two 4-input

multiplexer circuits have individual

active LOW output enable inputs (1E,

2E) which can be used to strobe the

outputs independently. The outputs

(1Y, 2Y) are forced LOW when the

corresponding output enable inputs

are HIGH.

The “153” is the logic implementation

of a 2-pole, 4-position switch, where

the position of the switch is

determined by the logic levels applied

to S0 and S1.