NSC 54FCT241LMQB, 54FCT241DMQB Datasheet

54FCT241
Octal Buffer/Line Driver with TRI-STATE

®

Outputs

General Description

The FCT241 is an octal buffer and line driver with 3-STATE
outputs designed to be employed as a memory and address
driver, clock driver, or bus-oriented transmitter/receiver.

Features

n TTL input and output level compatible
n CMOS power consumption
n Non-inverting buffers
n Output sink capability of 48 mA, source capability of

12 mA

Ordering Code

Military Package Number Package Description

54FCT241DMQB J20A 20-Lead Ceramic Dual-In-Line
54FCT241FMQB W20A 20-Lead Cerpack
54FCT241LMQB E20A 20-Lead Ceramic Leadless Chip Carrier, Type C

Connection Diagram

Pin Names Description

OE

1

Output Enable Input (Active Low)

OE

2

Output Enable Input (Active High)

I

0–I7

Inputs

O

0–O7

Outputs

OE

1

I

0–3

O

0–3

OE

2

I

4–7

O

4–7

HX ZLX Z
LH HHH H
LL LHL L

H

=

HIGH Voltage Level
L=LOW Voltage Level
X=Immaterial
Z=High Impedance

TRI-STATE®is a registered trademark of National Semiconductor Corporation.

Pin Assignment for

DIP and Cerpack

DS100954-1

Pin Assignment for LCC

DS100954-4

August 1998

54FCT241 Octal Buffer/Line Driver with TRI-STATE Outputs

© 1999 National Semiconductor Corporation DS100954 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Storage Temperature −65˚C to +150˚C
Ambient Temperature under Bias −55˚C to +125˚C
Junction Temperature under Bias

Ceramic −55˚C to +175˚C

V

CC

Pin Potential to

Ground Pin −0.5V to +7.0V
Input Voltage (Note 2) −0.5V to +7.0V
Input Current (Note 2) −30 mA to +5.0 mA
Voltage Applied to Any Output

in the Disabled or

Power-Off State −0.5V to 5.5V

in the HIGH State −0.5V to V

CC

Current Applied to Output

in LOW State (Max) twice the rated I

OL

(mA)

DC Latchup Source Current

(Over Comm Operating Range) −500 mA

Recommended Operating
Conditions

Free Air Ambient Temperature

Military −55˚C to +125˚C

Supply Voltage

Military +4.5V to +5.5V

Minimum Input Edge Rate (∆V/∆t)

Data Input 50 mV/ns
Enable Input 20 mV/ns

Note 1: Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired. Functional operation under these
conditions is not implied.

Note 2: Either voltage limit or current limit is sufficient to protect inputs.

DC Electrical Characteristics

Symbol Parameter Min Typ Max Units V

CC

Conditions

V

IH

Input HIGH Voltage 2.0 V Recognized HIGH Signal

V

IL

Input LOW Voltage 0.8 V Recognized LOW Signal

V

CD

Input Clamp Diode Voltage −1.2 V Min I

IN

=

−18 mA

V

OH

Output HIGH Voltage 54FCT 4.3 V Min I

OH

=

−3 mA

54FCT 2.4 V Min I

OH

=

−12 mA

V

OL

Output LOW Voltage 54FCT 0.2 V Min I

OL

=

300 uA

54FCT 0.5 V Min I

OL

=

48 mA

I

IH

Input HIGH Current 5 µA Max V

IN

=

2.7V (Note 3)

5V

IN

=

V

CC

I

IL

Input LOW Current −5 µA Max V

IN

=

0.5V (Note 3)

−5 V

IN

=

0.0V

I

OZH

Output Leakage Current 10 µA 0 − 5.5V V

OUT

=

2.7V; OE

n

=

2.0V

I

OZL

Output Leakage Current −10 µA 0 − 5.5V V

OUT

=

0.5V; OE

n

=

2.0V

I

OS

Output Short-Circuit Current −60 mA Max V

OUT

=

0.0V

I

CCH

Power Supply Current 160 µA Max All Outputs HIGH

I

CCL

Power Supply Current 160 µA Max All Outputs LOW

I

CCZ

Power Supply Current

160 µA Max

OE

n

=

V

CC

, All Others at V

CC

or Ground

I

CCT

Additional ICC/Input Outputs Enabled 2.0 mA Max V

I

=

V

CC

− 2.1V

I

CCD

Dynamic I

CC

No Load 0.4 mA/

MHz

Max Outputs Open, OE

n

=

GND,
One Bit Toggling, 50%Duty
Cycle

Note 3: Guaranteed, but not tested.

54FCT241

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