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

HIGH-PERFORMANCE CMOS BUS TRANSCEIVERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

7.23

3

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.

I/O

10-bit RECEIVE input/output.

I/O

10-bit TRANSMIT input/output.

IDT54/74FCT863

I

When LOW in conjunction with

activates the RECEIVE mode.

I

When LOW in conjunction with

activates the TRANSMIT mode.

I/O

9-bit RECEIVE input/output.

I/O

9-bit TRANSMIT input/output.

2610 tbl 01

°C, f = 1.0MHz)

Symbol

Parameter

(1)

Conditions Typ.

Max.

Unit

Input Capacitance

6

10

pF

I/O Capacitance

8

12

pF

NOTE:

2610 tbl 04

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

ABSOLUTE MAXIMUM RATINGS

(1)

Symbol

Rating

Commercial

Military

Unit

–0.5 to +7.0

–0.5 to +7.0

V

with Respect

to GND

V

with Respect

to GND

Operating

0 to +70

–55 to +125

°C

Temperature

Temperature

–55 to +125

–65 to +135

°C

Under Bias

Storage

–55 to +125

–65 to +150

°C

Temperature

Power Dissipation

0.5

0.5

W

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

3. Outputs and I/O terminals only.

FUNCTION TABLE

(1)

IDT54/74FCT861/863 (Non-inverting)

Inputs

Outputs

OET

OET OER

OER

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.