ON Semiconductor MC74AC139, MC74ACT139 Technical data

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MC74AC139, MC74ACT139

Dual 1-of-4
Decoder/Demultiplexer

The MC74AC139/74ACT139 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 demultiplexer. Each
half of the MC74AC139/74ACT139 can be used as a function
generator providing four minterms of two variables.

• Multifunctional Capability

• Two Completely Independent 1–of–4 Decoders

• Active LOW Mutually Exclusive Outputs

• Outputs Source/Sink 24 mA

• ′ACT139 Has TTL Compatible Inputs

V

E

CC

bA0bA1b

1516 14 13 12 11 10

O

0bO1bO2bO3b

9

16

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1

16

1

16

1

DIP–16
N SUFFIX
CASE 648

SO–16

D SUFFIX

CASE 751B

TSSOP–16
DT SUFFIX

CASE 948F

21 34567

E

A0aA1aO0aO1aO2aO

a

8

GND

3a

Figure 1. Pinout: 16–Lead Packages Conductors

(Top View)

PIN ASSIGNMENT

PIN FUNCTION

A0, A

1

E Enable Inputs
O0–O

3

Address Inputs

Outputs

TRUTH TABLE

Inputs Outputs

E A0A1O0O1O

H X X H H H H

L L L L H H H
L H L H L H H
L L H H H L H
L H H H H H L

H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial

O

2

3

EIAJ–16

16

1

M SUFFIX
CASE 966

ORDERING INFORMATION

Device Package Shipping

MC74AC139N
MC74ACT139N
MC74AC139D
MC74ACT139D
MC74AC139DR2 2500 Tape & Reel
MC74ACT139DR2 2500 Tape & Reel

MC74AC139DT
MC74ACT139DT

MC74AC139DTR2
MC74AC139M

MC74ACT139M
MC74AC139MEL
MC74ACT139MEL

PDIP–16

PDIP–16
SOIC–16
SOIC–16

SOIC–16
SOIC–16

TSSOP–16
TSSOP–16

TSSOP–16

EIAJ–16
EIAJ–16
EIAJ–16
EIAJ–16

25 Units/Rail
25 Units/Rail
48 Units/Rail
48 Units/Rail

96 Units/Rail
96 Units/Rail

2500 Tape & Reel

50 Units/Rail

50 Units/Rail
2000 Tape & Reel
2000 Tape & Reel

DEVICE MARKING INFORMATION

See general marking information in the device marking
section on page 6 of this data sheet.

 Semiconductor Components Industries, LLC, 2002

July, 2002 – Rev. 6

1 Publication Order Number:

MC74AC139/D

MC74AC139, MC74ACT139

EA0A

1

DECODER a

O0O1O2O

E A

3

0A1

DECODER b

O0O1O2O

3

Figure 2. Logic Symbol

E

a

A0aA

1a

E

b

A0bA

1b

0

0a

0

0

1a

2a

0

3a

NOTE: This diagram is provided only for the understanding of logic

operations and should not be used to estimate propagation
delays.

Figure 3. Logic Diagram

FUNCTIONAL DESCRIPTION

The MC74AC139/74ACT139 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

0–A1

exclusive active–LOW outputs (O0–O3). Each decoder has
an active–LOW enable (E). 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
MC74AC139/74ACT139 generates all four minterms of
two variables. These four minterms are useful in some
applications, replacing multiple gate functions as shown in
Figure 4, and thereby reducing the number of packages
required in a logic network.

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0

0b

0

E

A

0

A

1

E

A

0

A

1

E

A

0

A

1

E

A

0

A

1

0

1b

2b

0

3b

E

A

O

0

0

A

1

E

A

0

O

1

A

1

E

A

O

0

2

A

1

E

O

A

3

0

A

1

O

0

O

1

O

2

O

3

Figure 4. Gate Functions (Each Half)

2

MC74AC139, MC74ACT139

r,f

′AC Devices except Schmitt Inputs

In ut Rise and Fall Time (Note 2)

MAXIMUM RATINGS*

Symbol Parameter Value Unit

V

CC

V

IN

V

OUT

I

IN

I

OUT

I

CC

T

stg

*Maximum Ratings are those values beyond which damage to the device may occur . Functional operation should be restricted to the Recom-

mended Operating Conditions.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

V

CC

VIN, V

OUT

tr, t

f

tr, t

f

T

J

T

A

I

OH

I

OL

1. VIN from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2. V

IN

DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V
DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V

DC Output Voltage (Referenced to GND) –0.5 to VCC +0.5 V
DC Input Current, per Pin ±20 mA
DC Output Sink/Source Current, per Pin ±50 mA
DC VCC or GND Current per Output Pin ±50 mA
Storage Temperature –65 to +150 °C

Supply Voltage

DC Input Voltage, Output Voltage (Ref. to GND) 0 – V

′AC 2.0 5.0 6.0

′ACT 4.5 5.0 5.5

CC

V

V

VCC @ 3.0 V – 150 –

Input Rise and Fall Time (Note 1)

′

p

p

VCC @ 4.5 V – 40 – ns/V
VCC @ 5.5 V – 25 –

Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs

VCC @ 4.5 V – 10 –
VCC @ 5.5 V – 8.0 –

ns/V

Junction Temperature (PDIP) – – 140 °C
Operating Ambient Temperature Range –40 25 85 °C
Output Current – High – – –24 mA
Output Current – Low – – 24 mA

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3

MC74AC139, MC74ACT139

V

IH

ugee

g

o

CC

0

IL

auoee

g

o

CC

0

OH

ugee

OUT

50 

g

V

OL

auoee

OUT

50 

g

V

IINMaximum In ut

A

V

V

GND

ICCMaximum Quiescent

A

V

V

GND

VCC*

Fi

o aga o eay

o aga o eay

o aga o eay

o aga o eay

DC CHARACTERISTICS

74AC 74AC

TA =

–40°C to

TA = +25°C

CC

Symbol Parameter

V

IH

Minimum High Level
Input Voltage

(V)

3.0 1.5 2.1 2.1 V

4.5 2.25 3.15 3.15 V or VCC – 0.1 V

Typ Guaranteed Limits

5.5 2.75 3.85 3.85

V

IL

Maximum Low Level
Input Voltage

3.0 1.5 0.9 0.9 V

4.5 2.25 1.35 1.35 V or VCC – 0.1 V

5.5 2.75 1.65 1.65

V

OH

Minimum High Level
Output Voltage

3.0 2.99 2.9 2.9

4.5 4.49 4.4 4.4 V

5.5 5.49 5.4 5.4

3.0 – 2.56 2.46

4.5 – 3.86 3.76

5.5 – 4.86 4.76 –24 mA

V

OL

Maximum Low Level
Output Voltage

3.0 0.002 0.1 0.1

4.5 0.001 0.1 0.1 V

5.5 0.001 0.1 0.1

3.0 – 0.36 0.44

4.5 – 0.36 0.44

5.5 – 0.36 0.44 24 mA

I

IN

I

OLD

I

OHD

I

CC

Maximum Input
Leakage Current

†Minimum Dynamic

Output Current

Maximum Quiescent
Supply Current

5.5 – ±0.1 ±1.0 

5.5 – – 75 mA V

5.5 – – –75 mA V

5.5 – 8.0 80 

*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.

NOTE: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.

+85°C

Unit Conditions

= 0.1 V

OUT

= 0.1 V

OUT

I

= –50 A

OUT

*VIN = VIL or V

–12 mA

I

OH

I

OUT

–24 mA

= 50 A

*VIN = VIL or V

12 mA

I

OL

I

OLD

OHD

IN

=

24 mA

,

CC

= 1.65 V Max

= 3.85 V Min

=

or

CC

IH

IH

AC CHARACTERISTICS (For Figures and Waveforms – See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)

t

PLH

t

PHL

t

PLH

t

PHL

*Voltage Range 3.3 V is 3.3 V ±0.3 V.
*Voltage Range 5.0 V is 5.0 V ±0.5 V.

Symbol Parameter

Propagation Delay
An to O

n

Propagation Delay
An to O

n

Propagation Delay
En to O

n

Propagation Delay
En to O

n

*

(V)

3.3 4.0 8.0 11.5 3.5 13

5.0 3.0 6.5 8.5 2.5 9.5

3.3 3.0 7.0 10 2.5 11

5.0 2.5 5.5 7.5 2.0 8.5

3.3 4.5 9.5 12 3.5 13

5.0 3.5 7.0 8.5 3.0 10

3.3 4.0 8.0 10 3.0 11

5.0 2.5 6.0 7.5 2.5 8.5

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74AC 74AC

TA = –40°C

TA = +25°C

C

= 50 pF

L

to +85°C

= 50 pF

C

L

Min Typ Max Min Max

Unit

ns 3–6

ns 3–6

ns 3–6

ns 3–6

g.

No.