7

PS8325

09/14/98

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PI74VCX16245

2.5V 16-Bit Bidirectional Transceiver with 3-State Outputs

Test Circuits and Switching Waveforms

Setup, Hold, and Release Timing

Pulse Width

Switch Position

Propagaton Delay

Enable Disable Timing

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.

C. All input pulses are supplied by generators having the follow

ing characteristics:

measured from 10% to 90%, unless otherwise specified.

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

measurement.

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com

Output

Control

(Active LOW)

Output

Waveform 2

S1 at GND

(see Note B)

0V

0V

Output

Waveform 1

(see Note B)

+0.15V

-0.15V

500

Ω

30pF

From Output

Under Test

GND

Open

(See Note A)

500

Ω

Data

Input

0V

Timing

Input

0V

Low-High-Low

Pulse

High-Low-High

Pulse

0V

0V

Input

Opposite Phase

Input Transition

0V

0V

Output

t

s

e

T1

S

P

n

e

p

O

L

Z

P

x

D

H

Z

P

D

N

G