9

PS8548

07/31/01

PI74AVC+16821

2.5V 20-Bit Bus Interface

Flip-Flopwith3-StateOutputs

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PARAMETER MEASUREMENT INFORMATION

LoadCircuit

VoltageWaveforms

PropagationDelayTimes

VoltageWaveforms

Enable and Disable Times

VoltageWaveforms

PulseDuration

t

s

e

T1

S

p

L

P

Z

P

H

P

Z

P

n

e

p

O

V

x

2

C

C

D

N

G

Notes:

B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

D. The outputs are measured one at a time with one transition per measurement.

Figure4.LoadCircuitandVoltageWaveforms

2

Ω

2

Ω

2xVCC

Open

GND

S1

From Output

Under Test

CL = 15pF

(See Note A)

Output

Control

(Low Level

Enabling)

0V

0V

+0.1V

–0.1V

Output

Waveform 1

(see Note B)

Output

Waveform 2

S1 at GND

(see Note B)

Input

0V

Output

Input

0V

Data

Input

0V

0V

Timing

Input

VoltageWaveforms

Setup and Hold Times

500Ω

500Ω

0.3V

0.3V

30

Pericom Semiconductor Corporation

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