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IDT54FCT162501ATE

FAST CMOS 18-BIT REGISTERED TRANSCEIVER

Integrated Device Technology 

IDT54/74FCT16501AT/CT/ET, 162501AT/CT/ET, 162H501AT/CT/ET

FAST CMOS 18-BIT REGISTERED TRANSCEIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN DESCRIPTION

Pin Names

Description

OEAB

OEBA

A-to-B Output Enable Input

B-to-A Output Enable Input (Active LOW)

LEAB

A-to-B Latch Enable Input

LEBA

B-to-A Latch Enable Input

CLKAB

A-to-B Clock Input

CLKBA

Ax

Bx

B-to-A Clock Input

A-to-B Data Inputs or B-to-A 3-State Outputs(1)

B-to-A Data Inputs or A-to-B 3-State Outputs(1)

NOTE:

2547 tbl 01

1. On FCT16xH501T these pins have “Bus Hold”. All other pins are standard

inputs, outputs or I/Os.

ABSOLUTE MAXIMUM RATINGS(1)

Symbol

Description

VTERM(2) Terminal Voltage with Respect to

GND

VTERM(3) Terminal Voltage with Respect to

GND

TSTG Storage Temperature

Max.

–0.5 to +7.0

–0.5 to

VCC +0.5

–65 to +150

Unit

V

V

°C

IOUT

DC Output Current

–60 to +120 mA

NOTES:

2547 lnk 03

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-

INGS may cause permanent damage to the device. This is a stress rating

only and functional operation of the device at these or any other conditions

above those indicated in the operational sections of this specification is

not implied. Exposure to absolute maximum rating conditions for

extended periods may affect reliability.

2. All device terminals except FCT162XXXT Output and I/O terminals.

3. Output and I/O terminals for FCT162XXXT.

FUNCTION TABLE(1,4)

OEAB

L

H

H

H

H

H

H

Inputs

LEAB CLKAB

X

X

H

X

H

X

L

↑

L

↑

L

L

L

H

Outputs

Ax

Bx

X

Z

L

L

H

H

L

L

H

H

X

B(2)

X

B(3)

NOTES:

2547 tbl 02

1. A-to-B data flow is shown. B-to-A data flow is similar but uses OEBA,

LEBA, and CLKBA.

2. Output level before the indicated steady-state input conditions were

established.

3. Output level before the indicated steady-state input conditions were

established, provided that CLKAB was HIGH before LEAB went LOW.

4. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High-impedance

↑ = LOW-to-HIGH Transition

CAPACITANCE (TA = +25°C, f = 1.0MHz)

Symbol Parameter(1) Conditions Typ. Max. Unit

CIN

Input

VIN = 0V

3.5 6.0 pF

Capacitance

CI/O

I/O

VOUT = 0V 3.5 8.0 pF

Capacitance

NOTE:

2547 lnk 04

1. This parameter is measured at characterization but not tested.

5.10

3

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