Philips Semiconductors

Product specification

74F323

8-bit universal shift/storage register with synchronous

reset and common I/O pins (3-State)

1990 Mar 01

7

AC WAVEFORMS

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

tPLH

tPHL

VM

VM

VM

VM

1/fMAX

tW(L)

CP

Q0, Q7, I/On

tW(H)

SF00884

Waveform 1. Propagation Delay, Clock Input to Output,

Clock Pulse Width, and Maximum Clock Frequency

VM

VM

VM

VM

VM

VM

S0, S1,

I/On, SR

CP

SF00885

ts(H)

th(H)

th(L)

ts(L)

Waveform 2. Data, Select and Reset Setup and Hold Times

VM

VM

VM

tPHZ

tPZH

Sn, OEn

I/On

VOH -0.3V

0V

SF00886

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

and Output Disable Time from High Level

VM

VM

VM

tPLZ

tPZL

Sn, OEn

I/On

VOL +0.3V

SF00887

Waveform 4. 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

0V

tTHL (tf )

INPUT PULSE REQUIREMENTS

rep. rate

1MHz

500ns

2.5ns

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:

see AC electrical characteristics for value.

see AC electrical characteristics for value.

pulse generators.

tTHL (tf )

tTLH (tr )

tTLH (tr )

AMP (V)

amplitude

3.0V

1.5V

RL

7.0V

SF00777

TEST

SWITCH

closed

closed

All other

open

SWITCH POSITION