74VHC157M datasheet(5/9 Pages) STMICROELECTRONICS

Il numero della parte	74VHC157M

Spiegazioni elettronici	QUAD 2 CHANNEL MULTIPLEXER

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DYNAMIC SWITCHING CHARACTERISTICS

Symb ol

Parameter

T est Cond ition s

Val ue

Un it

VCC

(V)

TA =25

oC

-40 to 85

oC

Min.

Typ .

Max.

Min .

Max.

VOLP

Dynamic Low Voltage

Quiet Output (note 1, 2)

5.0

CL =50 pF

0.3

0.8

V

VOLV

-0.8

-0.3

VIHD

Dynamic High Voltage

Input (note 1, 3)

5.0

3.5

VILD

Dynamic Low Voltage

Input (note 1, 3)

5.0

1.5

1) Worst case package.

2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n -1) outputs switching and one output at GND.

3) Max number of data inputs (n) switching. (n-1) switching 0V to5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f=1MHz.

TEST CIRCUIT

CL = 15/50 pF or equivalent (includes jig and probe capacitance)

RT =ZOUT of pulse generator (typically 50

Ω)

74VHC157

5/9

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