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IDT74FCT861BP

HIGH-PERFORMANCE CMOS BUS TRANSCEIVERS

Integrated Device Technology 

IDT54/74FCT861A/B, IDT54/74FCT863A/B

HIGH-PERFORMANCE CMOS BUS TRANSCEIVERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

PIN DESCRIPTION

Name I/O

Description

IDT54/74FCT861

OER

I

When LOW in conjunction with OET HIGH

activates the RECEIVE mode.

OET

I

When LOW in conjunction with OER HIGH

activates the TRANSMIT mode.

RI

I/O 10-bit RECEIVE input/output.

TI

I/O 10-bit TRANSMIT input/output.

IDT54/74FCT863

OERI I

When LOW in conjunction with OETI HIGH

activates the RECEIVE mode.

OETI

I

When LOW in conjunction with OERI HIGH

activates the TRANSMIT mode.

RI

I/O 9-bit RECEIVE input/output.

TI

I/O 9-bit TRANSMIT input/output.

2610 tbl 01

FUNCTION TABLE(1)

IDT54/74FCT861/863 (Non-inverting)

Inputs

Outputs

OET OER RI TI RI TI

Function

L

H L N/A N/A L Transmitting

L

H H N/A N/A H Transmitting

H

L N/A L

L N/A Receiving

H

L N/A H H N/A Receiving

H H X X Z Z High Z

NOTE:

2610 tbl 02

1. H = HIGH, L = LOW, Z = High Impedance, X = Don’t Care, N/A = Not

Applicable.

ABSOLUTE MAXIMUM RATINGS(1)

Symbol

Rating

VTERM(2) Terminal Voltage

with Respect

to GND

VTERM(3) Terminal Voltage

with Respect

to GND

Commercial Military Unit

–0.5 to +7.0 –0.5 to +7.0 V

–0.5 to VCC –0.5 to VCC V

TA

Operating

Temperature

0 to +70 –55 to +125 °C

TBIAS

Temperature

Under Bias

–55 to +125 –65 to +135 °C

TSTG

Storage

Temperature

–55 to +125 –65 to +150 °C

PT

Power Dissipation

0.5

0.5

W

IOUT

DC Output Current

120

120

mA

NOTES:

2610 tbl 03

1. Stresses greater than those listed under ABSOLUTE MAXIMUM

RATINGS 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. No terminal voltage

may exceed VCC by +0.5V unless otherwise noted.

2. Inputs and VCC terminals only.

3. Outputs and I/O terminals only.

CAPACITANCE (TA = +25°C, f = 1.0MHz)

Symbol Parameter(1)

Conditions Typ. Max. Unit

CIN

Input Capacitance VIN = 0V

6 10 pF

CI/O

I/O Capacitance VOUT = 0V 8

12 pF

NOTE:

2610 tbl 04

1. This parameter is guaranteed by characterization but not tested.

7.23

3

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