Datasheet 74act139 Datasheet

54AC/74AC139#54ACT/74ACT139
Dual 1-of-4 Decoder/Demultiplexer

54AC/74AC139

February 1993

General Description

The ’AC/’ACT139 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 active­LOW Enable input which can be used as a data input for a
4-output demultiplexer. Each half of the ’AC/’ACT139 can
be used as a function generator providing all four minterms
of two variables.

Logic Symbols

IEEE/IEC

TL/F/9926– 8

Features

Y

ICCreduced by 50%

Y

Multifunction capability

Y

Two completely independent 1-of-4 decoders

Y

Active LOW mutually exclusive outputs

Y

Outputs source/sink 24 mA

Y

’ACT139 has TTL-compatible inputs

Y

Standard Military Drawing (SMD)
Ð’AC139: 5962-87623
Ð’ACT139: 5962-87553

Connection Diagrams

Pin Assignment

for DIP, Flatpak and SOIC

TL/F/9926– 2

#

54ACT/74ACT139 Dual 1-of-4 Decoder/Demultiplexer

TL/F/9926– 3

Pin Assignment

for LCC

TL/F/9926– 1

Pin Names Description

A0,A

1

E
O

0–O3

FACTTMis a trademark of National Semiconductor Corporation.

C

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

Address Inputs
Enable Inputs
Outputs

TL/F/9926– 4

TL/F/9926

Functional Description

The ’AC/’ACT139 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
and provides four mutually exclusive active-LOW outputs
(O

). Each decoder has an active-LOW enable (E).

0–O3

When E

is HIGH all outputs are forced HIGH. The enable
can be used as the data input for a 4-output demultiplexer
application. Each half of the ’AC/’ACT139 generates all four
minterms of two variables. These four minterms are useful
in some applications, replacing multiple gate functions as
shown in

Figure a

, and thereby reducing the number of

packages required in a logic network.

0–A1

)

Truth Table

Inputs Outputs

E A

HXXHHHH
LLLLHHH
LHLHLHH
LLHHHLH
LHHHHHL

e

H

HIGH Voltage Level

e

LOW Voltage Level

L

e

Immaterial

X

A

O

O

O

0

1

0

1

O

2

3

FIGURE a. Gate Functions (Each Half)

TL/F/9926– 6

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.

TL/F/9926– 5

2

Absolute Maximum Rating (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales

Office/Distributors for availability and specifications.

b

0.5V to V

b

0.5V to V

b

0.5V toa7.0V

b
a

a

CC

b
a

a

CC

20 mA
20 mA

0.5V

20 mA
20 mA

0.5V

Supply Voltage (V

DC Input Diode Current (IIK)

eb

V

0.5V

I

e

V

V

I

CC

)

CC

a

0.5V

DC Input Voltage (VI)

DC Output Diode Current (IOK)

eb

V

0.5V

O

e

V

O

a

V

0.5V

CC

DC Output Voltage (VO)

DC Output Source

or Sink Current (I

)

O

g

50 mA

DC VCCor Ground Current

per Output Pin (I

Storage Temperature (T

Junction Temperature (T

CDIP 175

CC

or I

GND

STG

J

)

)

b

)

PDIP 140

Note 1: Absolute maximum ratings are those values beyond which damage

to the device may occur. The databook specifications should be met, without

exception, to ensure that the system design is reliable over its power supply,

temperature, and output/input loading variables. National does not recom-

mend operation of FACT

TM

circuits outside databook specifications.

g

50 mA

65§Ctoa150§C

C

§

C

§

DC Characteristics for ’AC Family Devices

74AC 54AC 74AC

V

Symbol Parameter

V

Minimum High Level 3.0 1.5 2.1 2.1 2.1 V

IH

Input Voltage 4.5 2.25 3.15 3.15 3.15 V or V

(V)

CC

5.5 2.75 3.85 3.85 3.85

V

Maximum Low Level 3.0 1.5 0.9 0.9 0.9 V

IL

Input Voltage 4.5 2.25 1.35 1.35 1.35 V or V

5.5 2.75 1.65 1.65 1.65

V

Minimum High Level 3.0 2.99 2.9 2.9 2.9 I

OH

Output Voltage 4.5 4.49 4.4 4.4 4.4 V

5.5 5.49 5.4 5.4 5.4

3.0 2.56 2.4 2.46

4.5 3.86 3.7 3.76 V I

5.5 4.86 4.7 4.76

V

Maximum Low Level 3.0 0.002 0.1 0.1 0.1 I

OL

Output Voltage 4.5 0.001 0.1 0.1 0.1 V

5.5 0.001 0.1 0.1 0.1

3.0 0.36 0.50 0.44 12 mA

4.5 0.36 0.50 0.44 V I

5.5 0.36 0.50 0.44 24 mA

*All outputs loaded; thresholds on input associated with output under test.

ea

T

25§C

A

b

55§Ctoa125§Cb40§Ctoa85§C

Typ Guaranteed Limits

Recommended Operating
Conditions

Supply Voltage (VCC)

’AC 2.0V to 6.0V
’ACT 4.5V to 5.5V

Input Voltage (V

Output Voltage (VO) 0VtoV

Operating Temperature (TA)

74AC/ACT
54AC/ACT

Minimum Input Edge Rate (DV/Dt)

’AC Devices
V

from 30% to 70% of V

IN

V

CC

Minimum Input Edge Rate (DV/Dt)

’ACT Devices
V

from 0.8V to 2.0V

IN

V

CC

e

T

A

) 0VtoV

I

b

40§Ctoa85§C

b

55§Ctoa125§C

@

3.3V, 4.5V, 5.5V 125 mV/ns

@

4.5V, 5.5V 125 mV/ns

CC

e

T

A

Units Conditions

e

OUT

b

CC

e

OUT

b

CC

eb

OUT

e

*V

VILor V

IN

OH

e

50 mA

OUT

e

*V

VILor V

IN

OL

0.1V

0.1V

b
b
b

0.1V

0.1V

50 mA

12 mA
24 mA
24 mA

24 mA

CC

CC

IH

IH

3

DC Characteristics for ’AC Family Devices (Continued)

74AC 54AC 74AC

Symbol Parameter

V

(V)

CC

T

A

ea

25§C

b

e

T

A

55§Ctoa125§Cb40§Ctoa85§C

Typ Guaranteed Limits

I

IN

I

OLD

I

OHD

I

CC

Maximum Input

Leakage Current

²

Minimum Dynamic 5.5 50 75 mA V

Output Current

Maximum Quiescent

Supply Current or GND

²

Maximum test duration 2.0 ms, one output loaded at a time.

Note: I

@

and I

IN

I

CC

3.0V are guaranteed to be less than or equal to the respective [email protected] VCC.

CC

for 54AC@25§C is identical to 74AC@25§C.

5.5

5.5

5.5 4.0 80.0 40.0 mA

g

0.1

g

1.0

b

50

DC Characteristics for ’ACT Family Devices

74ACT 54ACT 74ACT

V

CC

Symbol Parameter

(V)

ea

T

25§C

A

Typ Guaranteed Limits

V

IH

V

IL

V

OH

Minimum High Level 4.5 1.5 2.0 2.0 2.0
Input Voltage 5.5 1.5 2.0 2.0 2.0 or V

Maximum Low Level 4.5 1.5 0.8 0.8 0.8
Input Voltage 5.5 1.5 0.8 0.8 0.8 or V

Minimum High Level 4.5 4.49 4.4 4.4 4.4
Output Voltage 5.5 5.49 5.4 5.4 5.4

4.5 3.86 3.70 3.76

5.5 4.86 4.70 4.76

V

OL

Maximum Low Level 4.5 0.001 0.1 0.1 0.1
Output Voltage 5.5 0.001 0.1 0.1 0.1

4.5 0.36 0.50 0.44

5.5 0.36 0.50 0.44 24 mA

I

IN

I

CCT

I

OLD

I

OHD

I

CC

*All outputs loaded; thresholds on input associated with output under test.

²

Note: I

Maximum Input
Leakage Current

Maximum
I

/Input

CC

²

Minimum Dynamic 5.5 50 75 mA V

Output Current

Maximum Quiescent
Supply Current or GND

Maximum test duration 2.0 ms, one output loaded at a time.

for 54ACT@25§C is identical to 74ACT@25§C.

CC

5.5

5.5 0.6 1.6 1.5 mA

5.5

5.5 4.0 80.0 40.0 mA

g

0.1

b

e

T

A

55§Ctoa125§Cb40§Ctoa85§C

g

1.0

b

50

e

T

A

g

1.0 mA

b

75 mA V

e

T

A

Units Conditions

Units Conditions

V

V

V

VI

V

VI

g

1.0 mAV

b

75 mA V

V

V

V

V

I

OUT

*V

OH

I

OUT

*V

OL

V

V

e

I

OLD

OHD

IN

OUT

OUT

IN

IN

e

I

e

I

OLD

OHD

IN

VCC, GND

e

1.65V Max

e

3.85V Min

e

V

CC

e

0.1V

b

0.1V

CC

e

0.1V

b

0.1V

CC

eb

50 mA

e

VILor V

b
b

e

50 mA

e

VILor V

VCC, GND

b

V

CC

e

1.65V Max

e

3.85V Min

e

V

CC

IH

24 mA
24 mA

IH

24 mA

2.1V

4

AC Electrical Characteristics

Symbol Parameter

t

PLH

t

PHL

t

PLH

t

PHL

*Voltage Range 3.3 is 3.3Vg0.3V

Voltage Range 5.0 is 5.0V

Propagation Delay 3.3 4.0 8.0 11.5 1.0 14.5 3.5 13.0
Anto O

n

Propagation Delay 3.3 3.0 7.0 10.0 1.0 12.5 2.5 11.0
A

to O

n

n

Propagation Delay 3.3 4.5 9.5 12.0 1.0 14.5 3.5 13.0
E

to O

n

n

Propagation Delay 3.3 4.0 8.0 10.0 1.0 12.5 3.0 11.0
Ento O

n

g

VCC* T

(V) C

5.0 3.0 6.5 8.5 1.0 11.0 2.5 9.5

5.0 2.5 5.5 7.5 1.0 10.0 2.0 8.5

5.0 3.5 7.0 8.5 1.0 11.0 3.0 10.0

5.0 2.5 6.0 7.5 1.0 10.0 2.5 8.5

0.5V

AC Electrical Characteristics

Symbol Parameter

t

PLH

t

PHL

t

PLH

t

PHL

*Voltage Range 5.0 is 5.0Vg0.5V

Propagation Delay
Anto O

n

Propagation Delay
A

to O

n

n

Propagation Delay
E

to O

n

n

Propagation Delay
Ento O

n

VCC* T

(V) C

5.0 1.5 6.0 8.5 1.0 12.0 1.5 9.5 ns

5.0 1.5 6.0 9.5 1.0 11.0 1.5 10.5 ns

5.0 2.5 7.0 10.0 1.0 12.5 2.0 11.0 ns

5.0 2.0 7.0 9.5 1.0 12.0 1.5 10.5 ns

74AC 54AC 74AC

A

ea

e

L

25§C

50 pF

eb

55§CT

T

A

a

125§Cto

to

e

C

50 pF C

L

eb

40§C

A

a

85§C Units

e

50 pF

L

Min Typ Max Min Max Min Max

74ACT 54ACT 74ACT

A

ea

e

L

25§C

50 pF

eb

55§CT

T

A

a

125§Cto

to

e

C

50 pF C

L

eb

40§C

A

a

85§C Units

e

50 pF

L

Min Typ Max Min Max Min Max

ns

ns

ns

ns

Capacitance

Symbol Parameter Typ Units Conditions

C

IN

C

PD

Input Capacitance 4.5 pF V

Power Dissipation
Capacitance

40.0 pF

5

e

OPEN

CC

e

V

5.0V

CC

Ordering Information

The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows:

74ACT 139 P C QR

Temperature Range Family Special Variations

e

74AC

Commercial XeDevices shipped in 13×reels

e

54AC

Military QReCommercial grade device

e

74ACT
54ACT

Device Type

Package Code

Commercial TTL-Compatible with burn-in

e

Military TTL-Compatible QBeMilitary grade device with

environmental and burn-in
processing shipped in tubes

e

Plastic DIP

P

e

Ceramic DIP

D

e

Flatpak

F

e

L

Leadless Ceramic Chip Carrier (LCC)

e

S

Small Outline (SOIC)

Temperature Range

e

Commercial (b40§Ctoa85§C)

C

e

Military (b55§Ctoa125§C)

M

6

7

Physical Dimensions inches (millimeters)

20 Terminal Ceramic Leadless Chip Carrier (L)

NS Package Number E20A

16 Lead Ceramic Dual In-Line Package (D)

NS Package Number J16A

8

Physical Dimensions inches (millimeters) (Continued)

16 Lead Small Outline Integrated Circuit (S)

NS Package Number M16A

16 Lead Plastic Dual-In-Line Package (P)

NS Package Number N16E

9

Physical Dimensions inches (millimeters) (Continued)

16 Lead Ceramic Flatpak (F)

NS Package Number W16A

54ACT/74ACT139 Dual 1-of-4 Decoder/Demultiplexer

#

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54AC/74AC139

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failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
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