IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT

FAST CMOS OCTAL BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.8

3

PIN DESCRIPTION

FUNCTION TABLE

ABSOLUTE MAXIMUM RATINGS

(1)

CAPACITANCE (TA = +25

°C, f = 1.0MHz)

Symbol

Rating

Commercial

Military

Unit

VTERM(2) Terminal Voltage

with Respect to

GND

–0.5 to +7.0

–0.5 to +7.0

V

VTERM(3) Terminal Voltage

with Respect to

GND

–0.5 to

VCC +0.5

–0.5 to

VCC +0.5

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

–60 to +120

–60 to +120

mA

2565 lnk 03

NOTES:

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. No terminal voltage may exceed

VCC by +0.5V unless otherwise noted.

2. Input and VCC terminals only.

3. Outputs and I/O terminals only.

NOTES:

2565 tbl 02

1. H = High Voltage Level

X = Don’t Care

L = Low Voltage Level

Z = High Impedance

Symbol

Parameter(1)

Conditions

Typ.

Max. Unit

CIN

Input

Capacitance

VIN = 0V

6

10

pF

COUT

Output

Capacitance

VOUT = 0V

8

12

pF

2565 lnk 04

NOTE:

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

Pin Names

Description

OE A, OE B

3–State Output Enable Inputs (Active LOW)

Dxx

Inputs

Oxx

Outputs

2565 tbl 01

Inputs(1)

Outputs(1)

OE

OE A

OE

OE B

D

240

244

540

541

LLL

H

LH

L

LL

H

L

H

L

H

H

H

X

ZZZZ