IDT54FCT240AE datasheet(3/8 Pages) IDT

3 / 8 page

IDT54/74FCT240/241/244/540/541/A/C

FAST CMOS OCTAL BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

7.8

PIN DESCRIPTION

FUNCTION TABLE

NOTE:

2606 tbl 04

1. OEB for 241 only.

NOTES:

2606 tbl 05

1. H = High Voltage Level

X = Don’t Care

L = Low Voltage Level

Z = High Impedance

2. OEB for 241 only.

ABSOLUTE MAXIMUM RATINGS

(1)

CAPACITANCE (TA = +25

°C, f = 1.0MHz)

NOTES:

2606 tbl 01

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. Input and VCC terminals only.

3. Outputs and I/O terminals only.

Symbol

Parameter (1)

Conditions

Typ.

Max.

Unit

CIN

Input

Capacitance

VIN = 0V

COUT

Output

Capacitance

VOUT = 0V

NOTE:

2606 tbl 02

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

Symbol

Rating

Commercial

Military

Unit

VTERM(2) Terminal Voltage

with Respect to

GND

–0.5 to +7.0

VTERM(3) Terminal Voltage

with Respect to

GND

–0.5 to VCC

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

Power Dissipation

0.5

IOUT

DC Output

Current

120

Pin Names

Description

OEA, OEB

3–State Output Enable Inputs (Active LOW)

OEB(1)

3–State Output Enable Input (Active HIGH)

Dxx

Inputs

Oxx

Outputs

Inputs(1)

Outputs(1)

OEA

OEB OEB(2)

240

241

244

540

541

LLH

HHL

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