M74HC157TTR 查看數據表（PDF） - STMicroelectronics

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M74HC157TTR

QUAD 2 CHANNEL MULTIPLEXER

STMicroelectronics 

M74HC157

QUAD 2 CHANNEL MULTIPLEXER

s HIGH SPEED:

tPD = 10ns (TYP.) at VCC = 6V

s LOW POWER DISSIPATION:

ICC = 4µA(MAX.) at TA=25°C

s HIGH NOISE IMMUNITY:

VNIH = VNIL = 28 % VCC (MIN.)

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 4mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s WIDE OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 157

DESCRIPTION

The M74HC157 is an high speed CMOS QUAD 2

CHANNEL MULTIPLEXER fabricated with silicon

gate C2MOS technology.

These device consist of four 2-input digital

multiplexer with common select and strobe inputs.

When the STROBE input is held high, selection of

data is inhibited and all the outputs become low.

DIP

SOP

TSSOP

ORDER CODES

PACKAGE

TUBE

DIP

SOP

TSSOP

M74HC157B1R

M74HC157M1R

T&R

M74HC157RM13TR

M74HC157TTR

The SELECT decoding determines whether the A

or B inputs get routed to their corresponding Y

outputs.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

July 2001

1/9

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