NSC 5962-9325001MSA, 5962-9325001MRA, 54F2244LMQB Datasheet

TL/F/9499

54F/74F2244 Octal Buffer/Line Driver with 25X Series Resistors in Outputs

August 1995

54F/74F2244
Octal Buffer/Line Driver with 25X Series
Resistors in Outputs

General Description

The ’F2244 is an octal buffer/line driver designed to drive
the capacitive inputs of MOS memory drivers, address driv­ers, clock drivers and bus-oriented transmitters/receivers.

The 25X series resistors in the outputs reduce ringing and
eliminate the need for external resistors.

Features

Y

TRI-STATEÉoutputs drive bus lines or buffer memory
address registers

Y

12 mA source current

Y

25X series resistors in outputs eliminate the need for
external resistors.

Y

Designed to drive the capacitive inputs of MOS devices

Y

Guaranteed 4000V minimum ESD protection

Commercial Military

Package

Package Description

Number

74F2244PC N20B 20-Lead (0.300×Wide) Molded Dual-In-Line

54F2244DM (Note 2) J20A 20-Lead Ceramic Dual-In-Line

74F2244SC (Note 1) M20B 20-Lead (0.300×Wide) Molded Small Outline JEDEC

74F2244MSA (Note 1) MSA20 20-Lead Molded Shrink Small Outline EIAJ Type II

54F2244FM (Note 2) W20A 20-Lead Cerpak

54F2244LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carier, Type C

Note 1: Devices also available in 13×reel. Use suffixeSCX and MSAX.

Note 2: Military grade device with environmental and burn-in processing. Use suffix

e

DMQB, FMQB and LMQB.

Connection Diagrams

Pin Assignment for LCC

’F2244

TL/F/9499– 3

Pin Assignment for DIP, SOIC and SSOP

’F2244

TL/F/9499– 4

TRI-STATEÉis a registered trademark of National Semiconductor Corporation.

C

1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

Logic Symbol

IEEE/IEC

’F2244

TL/F/9499– 6

Unit Loading/Fan Out

54F/74F

Pin Names Description

U.L. Input I

IH/IIL

HIGH/LOW Output IOH/I

OL

OE1,OE

2

TRI-STATE Output Enable Input (Active LOW) 1.0/1.667 20 mA/b1mA

OE

2

TRI-STATE Output Enable Input (Active HIGH) 1.0/1.667 20 mA/b1mA

I

an,Ibn

Inputs 1.0/2.667* 20 mA/b1.6 mA

Oan,O

bn

Outputs 750/20

b

15 mA/12 mA

*Worst-case ’F2244 disabled

Truth Table

’F2244

OE

1

I

an

O

an

OE

2

I

bn

O

bn

HXZ HXZ
LHH LHH
LLL LLL

H

e

HIGH Voltage Level

L

e

LOW Voltage Level

X

e

Immaterial

Z

e

High Impedance

2

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

b

65§Ctoa150§C

Ambient Temperature under Bias

b

55§Ctoa125§C

Junction Temperature under Bias

b

55§Ctoa175§C

Plastic

b

55§Ctoa150§C

V

CC

Pin Potential to

Ground Pin

b

0.5V toa7.0V

Input Voltage (Note 2)

b

0.5V toa7.0V

Input Current (Note 2)

b

30 mA toa5.0 mA

Voltage Applied to Output

in HIGH State (with V

CC

e

0V)

Standard Output

b

0.5V to V

CC

TRI-STATE Output

b

0.5V toa5.5V

Current Applied to Output

in LOW State (Max) twice the rated I

OL

(mA)

ESD Last Passing Voltage (Min) 4000V

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.

Recommended Operating
Conditions

Free Air Ambient Temperature

Military

b

55§Ctoa125§C

Commercial 0

§

Ctoa70§C

Supply Voltage

Military

a

4.5V toa5.5V

Commercial

a

4.5V toa5.5V

DC Electrical Characteristics

Symbol Parameter

54F/74F

Units V

CC

Conditions

Min Typ Max

V

IH

Input HIGH Voltage 2.0 V Recognized as a HIGH Signal

V

IL

Input LOW Voltage 0.8 V Recognized as a LOW Signal

V

CD

Input Clamp Diode Voltage

b

1.2 V Min I

IN

eb

18 mA

V

OH

Output HIGH 54F 10% V

CC

2.4 I

OH

eb

3mA

Voltage 54F 10% V

CC

2.0 I

OH

eb

12 mA

74F 10% V

CC

2.4
V Min

I

OH

eb

3mA

74F 10% V

CC

2.0 I

OH

eb

15 mA

74F 5% V

CC

2.7 I

OH

eb

3mA

V

OL

Output LOW 0.50

V Min

I

OL

e

1mA

Voltage 0.75 I

OL

e

12 mA

I

IH

Input HIGH 54F 20.0

mA Max V

IN

e

2.7V

Current 74F 5.0

I

BVI

Input HIGH Current 54F 100

mA Max V

IN

e

7.0V

Breakdown Test 74F 7.0

I

CEX

Output HIGH 54F 250

mA Max V

OUT

e

V

CC

Leakage Current 74F 50

V

ID

Input Leakage

74F 4.75 V 0.0

I

ID

e

1.9 mA

Test All other pins grounded

I

OD

Output Leakage

74F 3.75 mA 0.0

V

IOD

e

150 mV

Circuit Current All other pins grounded

I

IL

Input LOW Current

b

1.0
mA Max

V

IN

e

0.5V (OE1,OE2,OE2)

b

1.6 V

IN

e

0.5V (In)

I

OZH

Output Leakage Current 50 mA Max V

OUT

e

2.7V

I

OZL

Output Leakage Current

b

50 mA Max V

OUT

e

0.5V

I

OS

Output Short-Circuit Current

b

100

b

225 mA Max V

OUT

e

0V

I

CCH

Power Supply Current 40 60 mA Max V

O

e

HIGH

I

CCL

Power Supply Current 60 90 mA Max V

O

e

LOW

I

CCZ

Power Supply Current 60 90 mA Max V

O

e

HIGH Z

3