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PDF 54ACT139 Data sheet ( Hoja de datos )
| Número de pieza | 54ACT139 | |
| Descripción | Dual 1-of-4 Decoder/Demultiplexer | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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August 1998
54AC139 • 54ACT139
Dual 1-of-4 Decoder/Demultiplexer
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 active-LOW Enable input which can be used as a data in-
put 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.
n Multifunction capability
n Two completely independent 1-of-4 decoders
n Active LOW mutually exclusive outputs
n Outputs source/sink 24 mA
n ’ACT139 has TTL-compatible inputs
n Standard Military Drawing (SMD)
— ’AC139: 5962-87623
— ’ACT139: 5962-87553
Features
n ICC reduced by 50%
Logic Symbols
IEEE/IEC
DS100269-8
DS100269-1
Pin Names
A0, A1
E
O0– O3
DS100269-2
Description
Address Inputs
Enable Inputs
Outputs
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100269
www.national.com
1 page  
DC Characteristics for ’AC Family Devices (Continued)
Symbol
Parameter
IOLD
IOHD
ICC
(Note 3)
Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
54AC
VCC
TA =
(V) −55˚C to
+125˚C
Guaranteed
Limits
5.5 50
5.5 −50
5.5 80.0
Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
ICC for 54AC @ 25˚C is identical to 74AC @ 25˚C.
Units
mA
mA
µA
DC Characteristics for ’ACT Family Devices
Symbol
Parameter
VIH Minimum High Level
Input Voltage
VIL Maximum Low Level
Input Voltage
VOH Minimum High Level
Output Voltage
54ACT
VCC
TA =
(V) −55˚C to
+125˚C
Guaranteed
Limits
4.5 2.0
5.5 2.0
4.5 0.8
5.5 0.8
4.5 4.4
5.5 5.4
Units
V
V
V
VOL Maximum Low Level
Output Voltage
4.5 3.70
5.5 4.70
4.5 0.1
5.5 0.1
V
V
IIN
ICCT
IOLD
IOHD
ICC
Maximum Input
Leakage Current
Maximum ICC/Input
(Note 6)
Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
4.5
5.5
5.5
5.5
5.5
5.5
5.5
Note 5: All outputs loaded; thresholds on input associated with output under test.
Note 6: Maximum test duration 2.0 ms, one output loaded at a time.
Note 7: ICC for 54ACT @ 25˚C is identical to 74ACT @ 25˚C.
0.50
0.50
±1.0
1.6
50
−50
80.0
V
µA
mA
mA
mA
µA
5
Conditions
VOLD = 1.65V Max
VOHD = 3.85V Min
VIN = VCC
or GND
Conditions
VOUT = 0.1V
or VCC − 0.1V
VOUT = 0.1V
or VCC − 0.1V
IOUT = −50 µA
(Note 5)
VIN = VIL or VIH
IOH = −24 mA
IOH = −24 mA
IOUT = 50 µA
(Note 5)
VIN = VIL or VIH
IOL = 24 mA
IOL = 24 mA
VI = VCC, GND
VI = VCC − 2.1V
VOLD = 1.65V Max
VOHD = 3.85V Min
VIN = VCC
or GND
www.national.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet 54ACT139.PDF ] | |
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