74F27 Ver la hoja de datos (PDF) - Philips Electronics

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Fabricante

74F27

Triple 3-input NOR gate

Philips Electronics 

Philips Semiconductors

Triple 3-input NOR gate

Product specification

74F27

AC WAVEFORMS

Dna, Dnb, Dnc

VM

VM

tPHL

tPLH

Qn

VM

VM

NOTE:

For all waveforms, VM = 1.5V.

SF00037

Waveform 1. Propagation delay for inverting outputs

TEST CIRCUIT AND WAVEFORMS

VIN

PULSE

GENERATOR

VCC

VOUT

D.U.T.

NEGATIVE

PULSE

90%

tw

VM

10%

tTHL (tf )

VM

10%

tTLH (tr )

90%

AMP (V)

0V

RT

CL RL

Test Circuit for Totem-Pole Outputs

POSITIVE

PULSE

10%

tTLH (tr )

90%

VM

tw

tTHL (tf )

90%

VM

AMP (V)

10%

0V

DEFINITIONS:

RL = Load resistor;

see AC ELECTRICAL CHARACTERISTICS for value.

CL = Load capacitance includes jig and probe capacitance;

see AC ELECTRICAL CHARACTERISTICS for value.

RT = Termination resistance should be equal to ZOUT of

pulse generators.

Input Pulse Definition

family

74F

INPUT PULSE REQUIREMENTS

amplitude VM rep. rate

tw

tTLH

3.0V 1.5V 1MHz 500ns 2.5ns

tTHL

2.5ns

SF00006

February 5, 1991

5

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