74F595 datasheet(9/13 Pages) PHILIPS

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Philips Semiconductors

Product specification

74F595

8-bit shift register with output latches (3-State)

1990 Apr 18

AC WAVEFORMS (Continued)

For all waveforms, VM = 1.5V.

The shaded areas indicate when the input is permitted to change for predictable output performance.

tPHZ

tPZH

VOH -0.3V

Q0–Q7

SF01104

Waveform 5. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

tPLZ

tPZL

VOL +0.3V

Q0–Q7

SF01105

Waveform 6. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

TEST CIRCUIT 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 3-State 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

SF00777

TEST

SWITCH

tPLZ

closed

tPZL

closed

All other

open

SWITCH POSITION

74F595 Datasheet(PDF) 9 Page - NXP Semiconductors

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