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National Semiconductor Electronic Components Datasheet

74F139SC Datasheet

Dual 1-of-4 Decoder/Demultiplexer

No Preview Available !

74F139SC pdf
November 1994
54F 74F139
Dual 1-of-4 Decoder Demultiplexer
General Description
The ’F139 is a high-speed dual 1-of-4 decoder demultiplex-
er The device has two independent decoders each accept-
ing two inputs and providing four mutually exclusive active
LOW outputs Each decoder has an active LOW Enable in-
put which can be used as a data input for a 4-output demul-
tiplexer Each half of the ’F139 can be used as a function
generator providing all four minterms of two variables
Features
Y Multifunction capability
Y Two completely independent 1-of-4 decoders
Y Active LOW mutually exclusive outputs
Y Guaranteed 4000V minimum ESD protection
Commercial
74F139PC
74F139SC (Note 1)
74F139SJ (Note 1)
Military
54F139DM (Note 2)
54F139FM (Note 2)
54F139LM (Note 2)
Package
Number
N16E
J16A
M16A
M16D
W16A
E20A
Package Description
16-Lead (0 300 Wide) Molded Dual-In-Line
16-Lead Ceramic Dual-In-Line
16-Lead (0 150 Wide) Molded Small Outline JEDEC
16-Lead (0 300 Wide) Molded Small Outline EIAJ
16-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Devices also available in 13 reel Use suffix e SCX 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
IEEE IEC
TL F 9479–4
TL F 9479 – 1
Pin Assignment
for LCC
TL F 9479–7
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9479
TL F 9479 – 2
RRD-B30M75 Printed in U S A



National Semiconductor Electronic Components Datasheet

74F139SC Datasheet

Dual 1-of-4 Decoder/Demultiplexer

No Preview Available !

74F139SC pdf
Unit Loading Fan Out
Pin Names
Description
A0 A1
E
O0 – O3
Address Inputs
Enable Inputs (Active LOW)
Outputs (Active LOW)
54F 74F
UL
HIGH LOW
10 10
10 10
50 33 3
Input IIH IIL
Output IOH IOL
20 mA b0 6 mA
20 mA b0 6 mA
b1 mA 20 mA
Functional Description
The ’F139 is a high-speed dual 1-of-4 decoder demultiplex-
er The device has two independent decoders each of
which accepts two binary weighted inputs (A0 – A1) and pro-
vides four mutually 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 ’F139 generates all four minterms of two
variables These four minterms are useful in some applica-
tions replacing multiple gate functions as shown in Figure 1
and thereby reducing the number of packages required in a
logic network
Truth Table
Inputs
Outputs
E A0 A1 O0 O1 O2 O3
HX X H H H H
LL L L H H H
LH L H L H H
LL H H H L H
LH H H H H L
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Logic Diagram
TL F 9479 – 6
FIGURE 1 Gate Functions (each half)
TL F 9479 – 5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays
2



National Semiconductor Electronic Components Datasheet

74F139SC Datasheet

Dual 1-of-4 Decoder/Demultiplexer

No Preview Available !

74F139SC pdf
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
b65 C to a150 C
Ambient Temperature under Bias
b55 C to a125 C
Junction Temperature under Bias
Plastic
b55 C to a175 C
b55 C to a150 C
VCC Pin Potential to
Ground Pin
b0 5V to a7 0V
Input Voltage (Note 2)
b0 5V to a7 0V
Input Current (Note 2)
b30 mA to a5 0 mA
Voltage Applied to Output
in HIGH State (with VCC e 0V)
Standard Output
TRI-STATE Output
b0 5V to VCC
b0 5V to a5 5V
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
twice the rated IOL (mA)
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
Commercial
b55 C to a125 C
0 C to a70 C
Supply Voltage
Military
Commercial
a4 5V to a5 5V
a4 5V to a5 5V
DC Electrical Characteristics
Symbol
Parameter
54F 74F
Min Typ Max
Units VCC
Conditions
VIH
VIL
VCD
VOH
VOL
IIH
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
Output LOW
Voltage
Input HIGH
Current
54F 10% VCC
74F 10% VCC
74F 5% VCC
54F 10% VCC
74F 10% VCC
54F
74F
20
25
25
27
V Recognized as a HIGH Signal
08 V
Recognized as a LOW Signal
b1 2 V Min IIN e b18 mA
IOH e b1 mA
V Min IOH e b1 mA
IOH e b1 mA
0 5 V Min IOL e 20 mA
0 5 IOL e 20 mA
20 0
50
mA Max VIN e 2 7V
IBVI Input HIGH Current 54F
Breakdown Test
74F
100 mA Max VIN e 7 0V
70
ICEX
Output HIGH
Leakage Current
54F
74F
250 mA Max VOUT e VCC
50
VID Input Leakage 74F
Test
4 75
V 0 0 IID e 1 9 mA
All Other Pins Grounded
IOD
Output Leakage
74F
Circuit Current
3 75 mA 0 0 VIOD e 150 mV
All Other Pins Grounded
IIL Input LOW Current
IOS Output Short-Circuit Current
ICC Power Supply Current
b0 6 mA Max VIN e 0 5V
b60
b150 mA Max VOUT e 0V
13 20 mA Max
3




Part Number 74F139SC
Description Dual 1-of-4 Decoder/Demultiplexer
Maker National Semiconductor
Total Page 8 Pages
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