74F862 datasheet(8/12 Pages) PHILIPS

8 / 12 page

Philips Semiconductors

Product specification

74F862, 74F863

Bus transceivers (3-State)

2000 Mar 24

AC WAVEFORMS

Bn, An

An, Bn

tPLH

tPHL

SF00202

Waveform 1. Propagation Delay for Non-inverting Output

An or Bn

Bn or An

tPLH

tPHL

SF00534

Waveform 2. Propagation Delay for Inverting Output

An, Bn

OEBAn

OEABn

tPZH

tPHZ

VOH –0.3 V

SF00535

0 V

Waveform 3. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

An, Bn

OEBAn

OEABn

tPZL

tPLZ

VOL +0.3 V

SF00536

Waveform 4. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

NOTE: For all waveforms, VM = 1.5V.

TEST CIRCUITS AND WAVEFORMS

90%

10%

90%

10%

90%

10%

90%

10%

NEGATIVE

PULSE

POSITIVE

PULSE

AMP (V)

tTHL (tf )

INPUT PULSE REQUIREMENTS

rep. rate

tTLH

tTHL

1MHz

500ns

2.5ns

Input Pulse Definition

VCC

family

74F

D.U.T.

PULSE

GENERATOR

VIN

VOUT

Test Circuit for Open Collector Outputs

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.

tTHL (tf )

tTLH (tr )

AMP (V)

amplitude

3.0V

1.5V

7.0V

SF00128

TEST

SWITCH

tPLZ

closed

tPZL

closed

All other

open

SWITCH POSITION

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