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IDT54FCT162543AT

FAST CMOS 16-BIT LATCHED TRANSCEIVER

Integrated Device Technology 

IDT54/74FCT16543T/AT/CT/ET, 162543T/AT/CT/ET

FAST CMOS 16-BIT LATCHED TRANSCEIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN DESCRIPTION

Pin Names

xOEAB

xOEBA

xCEAB

xCEBA

xLEAB

xLEBA

Description

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

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

A-to-B Enable Input (Active LOW)

B-to-A Enable Input (Active LOW)

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

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

xAx

A-to-B Data Inputs or B-to-A 3-State Outputs

xBx

B-to-A Data Inputs or A-to-B 3-State Outputs

2618 tbl 01

FUNCTION TABLE(1, 2)

For A-to-B (Symmetric with B-to-A)

Inputs

Latch

Status

xCEAB xLEAB xOEAB xAx to xBx

Output

Buffers

xBx

H

X

X

Storing

High Z

X

H

X

Storing

X

L

L

L

Transparent Current A Inputs

L

H

L

Storing

Previous* A Inputs

L

L

H

Transparent

High Z

L

H

H

Storing

High Z

NOTES:

1. * Before xLEAB LOW-to-HIGH Transition

2618 tbl 02

H = HIGH Voltage Level

L = LOW Voltage Level

X = Don’t Care

2. A-to-B data flow shown; B-to-A flow control is the same, except using

xCEBA, x LEBA and xOEBA.

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:

2618 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 condi-

tions above those indicated in the operational sections of this specifica-

tion 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.

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:

2618 lnk 04

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

5.12

3

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