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PI74ALVTC16244

1.8/2.5/3.3V 16-Bit Buffer/Driver with 3-State Outputs

Pericom Semiconductor Corporation 

PI74ALVTC16244

16-Bit Buffer Driver with 3-State Outputs

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Test Circuits and Switching Waveforms

Switch Position

Parameter Measurement Information (VDD = 1.8V - 3.6V)

Test

S1

From Output

Under Test

50pF

CL

R1

500Ω

RL

500Ω

2 x VDD

Open

GND

Setup, Hold, and Release Timing

Data

Input

tSU

tH

Timing

Input

VDD

VDD/2

0V

VDD

VDD/2

0V

Notes:

• CL includes probe and jig capacitance.

• 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.

• All input pulses are supplied by generators having the

following characteristics: PRR ≤ 10 MHz, ZO = 50Ω,

tr ≤ 2ns, tf ≤ 2ns, measured from 10% to 90%, unless

otherwise specified.

• The outputs are measured one at a time with one

transition per measurement.

tpd

tPLZ/tPZL

tPHZ/tPZH

Pulse Width

Open

2 x VDD

GND

Low-High-Low

Pulse

tW

High-Low-High

Pulse

VDD

VDD/2

0V

VDD

VDD/2

0V

Propagaton Delay

Input

tPLH

Output

tPHL

Opposite Phase

Input Transition

Enable Disable Timing

VDD

VDD/2

tPHL

0V

VDD

VDD/2

tPLH

VOL

VDD

VDD/2

0V

Output

Control

(Active LOW)

tPZL

Output

Waveform 1

S1 at 2xVDD

tPZH

Output

Waveform 2

S1 at GND

tPLZ

VDD

VDD/2

tPHZ

VDD/2

VDD

VDD/2

0V

VDD

+0.15V

VOL

-0.15V VOH

0V

06-0155

8

PS8159G 05/30/06

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