Fairchild 54F139, 74F139 service manual

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54F/74F139
Dual 1-of-4 Decoder/Demultiplexer

54F/74F139 Dual 1-of-4 Decoder/Demultiplexer

November 1994

General Description

The ’F139 is a high-speed, dual 1-of-4 decoder/demultiplex­er. The device has two independent decoders, each accept­ing two inputs and providing four mutually exclusive active
LOW outputs. Each decoder has an active LOW Enable in­put which can be used as a data input for a 4-output demul-

Features

Y

Multifunction capability

Y

Two completely independent 1-of-4 decoders

Y

Active LOW mutually exclusive outputs

Y

Guaranteed 4000V minimum ESD protection

tiplexer. Each half of the ’F139 can be used as a function
generator providing all four minterms of two variables.

Commercial Military

Package

Number

Package Description

74F139PC N16E 16-Lead (0.300×Wide) Molded Dual-In-Line

54F139DM (Note 2) J16A 16-Lead Ceramic Dual-In-Line

74F139SC (Note 1) M16A 16-Lead (0.150×Wide) Molded Small Outline, JEDEC

74F139SJ (Note 1) M16D 16-Lead (0.300×Wide) Molded Small Outline, EIAJ

54F139FM (Note 2) W16A 16-Lead Cerpack

54F139LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier, Type C

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

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

e

DMQB, FMQB and LMQB.

Logic Symbols Connection Diagrams

Pin Assignment

DIP, SOIC and Flatpak

TL/F/9479– 3

TL/F/9479– 4

IEEE/IEC

TL/F/9479– 1

Pin Assignment

for LCC

TL/F/9479– 7

TRI-STATEÉis a registered trademark of National Semiconductor Corporation.

C

1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.

TL/F/9479

TL/F/9479– 2

Unit Loading/Fan Out

Pin Names Description

A0,A
E
O

0–O3

1

Address Inputs 1.0/1.0 20 mA/b0.6 mA
Enable Inputs (Active LOW) 1.0/1.0 20 mA/b0.6 mA
Outputs (Active LOW) 50/33.3

U.L. Input I

HIGH/LOW Output IOH/I

Functional Description

The ’F139 is a high-speed dual 1-of-4 decoder/demultiplex­er. The device has two independent decoders, each of
which accepts two binary weighted inputs (A
vides four mutually exclusive active LOW Outputs (O
Each decoder has an active LOW enable (E

) and pro-

0–A1

0–O3

). When E is

HIGH all outputs are forced HIGH. The enable can be used

Truth Table

Inputs Outputs

E A

HX X H H H H
LL L L H H H
LH L H L H H
LL HHH L H
LH H H H H L

e

H

HIGH Voltage Level

e

L

LOW Voltage Level

e

X

Immaterial

A

O

O

O

0

1

0

1

O

2

3

54F/74F

IH/IIL

OL

b

1 mA/20 mA

as the data input for a 4-output demultiplexer application.
Each half of the ’F139 generates all four minterms of two
variables. These four minterms are useful in some applica­tions, replacing multiple gate functions as shown in

).

and thereby reducing the number of packages required in a
logic network.

Figure 1

,

FIGURE 1. Gate Functions (each half)

Logic Diagram

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

2

TL/F/9479– 6

TL/F/9479– 5

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

Ambient Temperature under Bias

Junction Temperature under Bias

Plastic

Pin Potential to

V

CC

Ground Pin

Input Voltage (Note 2)

Input Current (Note 2)

Voltage Applied to Output

in HIGH State (with V
Standard Output

CC

e

TRI-STATEÉOutput

0V)

b

65§Ctoa150§C

b

55§Ctoa125§C

b

55§Ctoa175§C

b

55§Ctoa150§C

b

0.5V toa7.0V

b

0.5V toa7.0V

b

30 mA toa5.0 mA

b

0.5V to V

b

0.5V toa5.5V

Current Applied to Output

in LOW State (Max) twice the rated I

(mA)

OL

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.

DC Electrical Characteristics

Symbol Parameter

V

V

V

V

V

I

I

I

V

I

I

I

I

IH

IL

CD

OH

OL

IH

BVI

CEX

ID

OD

IL

OS

CC

Input HIGH Voltage 2.0 V Recognized as a HIGH Signal

Input LOW Voltage 0.8 V Recognized as a LOW Signal

Input Clamp Diode Voltage

Output HIGH 54F 10% V
Voltage 74F 10% V

Output LOW 54F 10% V
Voltage 74F 10% V

Input HIGH 54F 20.0
Current 74F 5.0

Input HIGH Current 54F 100
Breakdown Test 74F 7.0

Output HIGH 54F 250
Leakage Current 74F 50

Input Leakage
Test All Other Pins Grounded

Output Leakage
Circuit Current All Other Pins Grounded

Input LOW Current

Output Short-Circuit Current

Power Supply Current 13 20 mA Max

74F 5% V

74F 4.75 V 0.0

74F 3.75 mA 0.0

Min Typ Max

2.5 I

CC

2.5 V Min I

CC

2.7 I

CC

CC

CC

b

60

CC

54F/74F

Recommended Operating
Conditions

Free Air Ambient Temperature

Military
Commercial 0

Supply Voltage

Military
Commercial

Units V

b

1.2 V Min I

0.5

0.5 I

CC

V Min

mA Max

mA Max

mA Max

b

0.6 mA Max V

b

150 mA Max V

I

V

V

V

I

V

IN

OH

OH

OH

OL

OL

ID

IN

IN

OUT

IOD

IN

OUT

eb

eb

eb

eb

e

e

e

e

e

e

1.9 mA

e

e

e

Conditions

18 mA

1mA
1mA
1mA

20 mA
20 mA

2.7V

7.0V

V

150 mV

0.5V

0V

b

55§Ctoa125§C

Ctoa70§C

§

a

4.5V toa5.5V

a

4.5V toa5.5V

CC

3