7

PS8425D

04/05/02

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PI74AVC164245

16-Bit 1.8-2.5V to 3.3V Level Shifting

Transceiver with 3-State Outputs

Output

Control

(low-level

enabling)

Output

Waveform 2

S1 at GND

(see note B)

3.0V

0V

2.5V

0V

Output

Waveform 1

S1 at 6V

(see note B)

1.5V

1.5V

1.25V

1.25V

From Output

Under Test

(see note A)

GND

Open

500

Ω

500

Ω

Input

3.0V

1.5V

1.25V

1.5V

1.25V

0V

Output

Figure 2. Load Circuit and Voltage Waveforms

Load Circuit

Voltage Waveforms

Propagation Delay Times

Voltage Waveforms

Enable and Disable Times

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 following characteristics: PRR

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

t

s

e

T1

S

P

L

P

Z

P

H

P

Z

P

n

e

p

O

V

×

2

C

C

D

N

G