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IDT74163244PF

16-BIT BUS SWITCH

Integrated Device Technology 

IDT74FST163244

16-BIT BUS SWITCH

COMMERCIAL TEMPERATURE RANGE

TEST CIRCUITS AND WAVEFORMS

TEST CIRCUITS FOR ALL OUTPUTS

V CC

VIN

Pulse

Generator

D.U.T.

RT

V OUT

50pF

CL

500Ω

500Ω

SWITCH POSITION

Test

Switch

7.0V

Open Drain

Disable Low

Closed

Enable Low

All Other Tests

Open

DEFINITIONS:

3615 lnk 08

CL= Load capacitance: includes jig and probe capacitance.

RT = Termination resistance: should be equal to ZOUT of the Pulse

Generator.

SET-UP, HOLD AND RELEASE TIMES

3615 lnk 03

PULSE WIDTH

DATA

INPUT

tSU

TIMING

INPUT

ASYNCHRONOUS CONTROL

PRESET

CLEAR

ETC.

SYNCHRONOUS CONTROL

PRESET

CLEAR

CLOCK ENABLE

tSU

ETC.

tH

tREM

tH

PROPAGATION DELAY

SAME PHASE

INPUT TRANSITION

tPLH

tPHL

OUTPUT

tPLH

tPHL

OPPOSITE PHASE

INPUT TRANSITION

3V

1.5V

0V

LOW-HIGH-LOW

3V

PULSE

1.5V

0V

tW

3V

1.5V

0V

HIGH-LOW-HIGH

PULSE

3V

1.5V

0V

3615 lnk 04

ENABLE AND DISABLE TIMES

1.5V

1.5V

3615 lnk 05

3V

1.5V

0V

VOH

1.5V

VOL

3V

1.5V

0V

3615 lnk 06

ENABLE

DISABLE

CONTROL

INPUT

OUTPUT

NORMALLY

LOW

tPZL

SWITCH

CLOSED

tPZH

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

3V

1.5V

0V

tPLZ

3.5V

3.5V

1.5V

tPHZ

0.3V VOL

1.5V

0.3V VOH

0V

0V

NOTES:

3615 lnk 07

1. Diagram shown for input Control Enable-LOW and input Control Disable-

HIGH

2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns

5

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