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IDT49C466PQF

64-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT

Integrated Device Technology 

IDT49C466/A Flow-thruEDC™

ERROR DETECTION AND CORRECTION UNIT

COMMERCIAL TEMPERATURE RANGES

TEST CIRCUITS AND WAVEFORMS

TEST CIRCUITS FOR ALL OUTPUTS

VCC

VIN

Pulse

Generator

D.U.T.

RT

VOUT

50pF

CL

500Ω

500Ω

SWITCH POSITION

Test

Switch

7.0V

Open Drain

Disable Low

Closed

Enable Low

All Other Tests

Open

DEFINITIONS:

2617 tbl 20

CL= Load capacitance: includes jig and probe capacitance.

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

Generator.

2617 drw 16

SET-UP, HOLD AND RELEASE TIMES

PULSE WIDTH

DATA

INPUT

TIMING

tSU

tH

3V

1.5V

0V

3V

LOW-HIGH-LOW

PULSE

1.5V

INPUT

1.5V

ASYNCHRONOUS CONTROL

PRESET

tREM

0V

3V

tW

CLEAR

ETC.

1.5V

0V

HIGH-LOW-HIGH

PULSE

1.5V

SYNCHRONOUS CONTROL

PRESET

CLEAR

CLOCK ENABLE

tSU

tH

3V

1.5V

0V

2617 drw 18

ETC.

2617 drw 17

PROPAGATION DELAY

ENABLE AND DISABLE TIMES

ENABLE

DISABLE

SAME PHASE

INPUT TRANSITION

tPLH

tPHL

3V

1.5V

0V

VOH

CONTROL

INPUT

tPZL

3V

1.5V

0V

tPLZ

OUTPUT

1.5V

OUTPUT

3.5V

3.5V

tPLH

tPHL

VOL

NORMALLY

LOW

SWITCH

CLOSED

1.5V

0.3V VOL

OPPOSITE PHASE

INPUT TRANSITION

3V

1.5V

0V

2617 drw 26

tPZH

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

tPHZ

1.5V

0V

0.3V VOH

0V

NOTES:

2617 drw 27

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

11.7

26

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