M74HC251B1R. datasheet(1/11 Pages) STMICROELECTRONICS

部件名	M74HC251B1R.

功能描述	8-CHANNEL MULTIPLEXER (3-STATE)

PDF	11 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 11 page

1/11

July 2001

s

HIGH SPEED :

tPD = 17 ns (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 251

DESCRIPTION

The

M74HC251

is

an

high

speed

CMOS

8-CHANNEL

MULTIPLEXER

(3-STATE)

fabricated with silicon gate C2MOS technology.

This Multiplexer features both true (Y) and

complement (W) outputs as well as STROBE

input. When the STROBE is high, both outputs are

in the high impedance state. When enabled,

address information on the data select inputs

determines which data input is routed to Y and W.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

M74HC251

8-CHANNEL MULTIPLEXER (3-STATE)

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

M74HC251B1R

SOP

M74HC251M1R

M74HC251RM13TR

TSSOP

M74HC251TTR

TSSOP

DIP

SOP

类似零件编号 - M74HC251B1R.

制造商	部件名	数据表	功能描述
STMicroelectronics	M74HC251B1R	249Kb / 11P	8 BIT SIPO SHIFT REGISTER Feb-1993

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类似说明 - M74HC251B1R.

制造商	部件名	数据表	功能描述
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STMicroelectronics	M54HC354	264Kb / 12P	8 CHANNEL MULTIPLEXER/REGISTER 3 STATE Apr-1993
Fairchild Semiconductor	MM74HC251	74Kb / 7P	8-Channel 3-STATE Multiplexer
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