74F569 datasheet(10/14 Pages) PHILIPS

No de pièce	74F569

Description	4-bit bidirectional binary synchronous counter 3-State

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Fabricant	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product specification

74F569

4-bit bidirectional binary synchronous counter (3-State)

1996 Jan 05

10

AC WAVEFORMS (Continued)

For all waveforms, VM = 1.5V

The shaded areas indicate when the input is permitted to change for

predictable output performance.

VM

tPLZ

tPZL

OE

Qn

VOL +0.3V

SF01083

Waveform 11. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level

TEST CIRCUIT AND WAVEFORM

tw

90%

VM

10%

90%

VM

10%

90%

VM

10%

90%

VM

10%

NEGATIVE

PULSE

POSITIVE

PULSE

tw

AMP (V)

0V

tTHL (tf )

INPUT PULSE REQUIREMENTS

rep. rate

tw

tTLH

tTHL

1MHz

500ns

2.5ns

Input Pulse Definition

VCC

family

74F

D.U.T.

PULSE

GENERATOR

RL

CL

RT

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

VM

RL

7.0V

SF00777

TEST

SWITCH

tPLZ

closed

tPZL

closed

All other

open

SWITCH POSITION

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74F569 Fiches technique(PDF) 10 Page - NXP Semiconductors

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