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54AC138F View Datasheet(PDF) - National ->Texas Instruments

Part Name54AC138F National-Semiconductor
National ->Texas Instruments National-Semiconductor
Description1-of-8 Decoder/Demultiplexer
54AC138F Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
Absolute Maximum Ratings (Note 1)
Recommended Operating
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
DC Input Diode Current (IIK)
VI = −0.5V
VI = VCC + 0.5V
DC Input Voltage (VI)
DC Output Diode Current (IOK)
VO = −0.5V
VO = VCC + 0.5V
DC Output Voltage (VO)
DC Output Source
or Sink Current (IO)
DC VCC or Ground Current
per Output Pin (ICC or IGND)
Storage Temperature (TSTG)
Junction Temperature (TJ)
CDIP
−0.5V to +7.0V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
±50 mA
±50 mA
−65˚C to +150˚C
175˚C
Conditions
Supply Voltage (VCC)
’AC
2.0V to 6.0V
’ACT
4.5V to 5.5V
Input Voltage (VI)
Output Voltage (VO)
Operating Temperature (TA)
54AC/ACT
0V to VCC
0V to VCC
−55˚C to +125˚C
Minimum Input Edge Rate (V/t)
’AC Devices
VIN from 30% to 70% of VCC
VCC @ 3.3V, 4.5V, 5.5V
Minimum Input Edge Rate (V/t)
125 mV/ns
’ACT Devices
VIN from 0.8V to 2.0V
VCC @ 4.5V, 5.5V
125 mV/ns
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® circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
Symbol
VIH
VIL
VOH
VOL
IIN
IOLD
IOHD
Parameter
VCC
(V)
Minimum High
3.0
Level Input Voltage
4.5
5.5
Maximum Low
3.0
Level Input Voltage
4.5
5.5
Minimum High
3.0
Level Output
4.5
Voltage
5.5
3.0
4.5
5.5
Maximum Low
3.0
Level Output
4.5
Voltage
5.5
3.0
4.5
5.5
Maximum Input
5.5
Leakage Current
(Note 3) Minimum
5.5
Dynamic Output
Current
5.5
54AC
TA =
−55˚C to +125˚C
Guaranteed Limits
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.4
3.7
4.7
0.1
0.1
0.1
0.50
0.50
0.50
±1.0
50
−50
Units
V
V
V
V
V
V
µA
mA
mA
Conditions
VOUT = 0.1V
or VCC − 0.1V
VOUT = 0.1V
or VCC − 0.1V
IOUT = −50 µA
(Note 2) VIN = VIL or VIH
−12 mA
IOH −24 mA
−24 mA
IOUT = 50 µA
(Note 2) VIN = VIL or VIH
12 mA
IOL 24 mA
24 mA
VI = VCC, GND
VOLD = 1.65V Max
VOHD = 3.85V Min
5
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General Description
The ’AC/’ACT138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally suited for high-speed bipolar memory chip select address decoding. The multiple in put enables allow parallel expansion to a 1-of-24 decoder using just three ’AC/’ACT138 devices or a 1-of-32 decoder using four ’AC/’ACT138 devices and one inverter.

Features
■ ICC reduced by 50%
■ Demultiplexing capability
■ Multiple input enable for easy expansion
■ Active LOW mutually exclusive outputs
■ Outputs source/sink 24 mA
■ ’ACT138 has TTL-compatible inputs
■ Standard Microcircuit Drawing (SMD)
   — ’AC138: 5962-87622
   — ’ACT138: 5962-87554

 

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