Original Creation Date: 06/28/96
Last Update Date: 03/31/97
Last Major Revision Date: 06/28/96
MN54AC138-X REV 1B0 MICROCIRCUIT DATA SHEET
1-of-8 Decoder/Demultiplexer
General Description
The AC138 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 input enables
allow parallel expansion to a 1-of-24 decoder using just three AC138 devices or a 1-of-32
decoder using four AC138 devices and one inverter.
NS Part Numbers
54AC138DMQB
54AC138FMQB
54AC138LMQB
Industry Part Number
54AC138
Prime Die
Z138
Processing
MIL-STD-883, Method 5004
Quality Conformance Inspection
MIL-STD-883, Method 5005
Subgrp Description Temp ( C)
o
1 Static tests at +25
2 Static tests at +125
3 Static tests at -55
4 Dynamic tests at +25
5 Dynamic tests at +125
6 Dynamic tests at -55
7 Functional tests at +25
8A Functional tests at +125
8B Functional tests at -55
9 Switching tests at +25
10 Switching tests at +125
11 Switching tests at -55
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MICROCIRCUIT DATA SHEET
MN54AC138-X REV 1B0
Features
- Icc reduced by 50%
- Demultiplexing capability
- Multiple input enable for easy expansion
- Active LOW mutually exclusive outputs
- Outputs source/sink 24 mA
- Standard Military Drawing (SMD)
- AC138: 5962-87622
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MICROCIRCUIT DATA SHEET
MN54AC138-X REV 1B0
(Absolute Maximum Ratings)
(Note 1)
Supply Voltage (Vcc) -0.5V to +7.0V
DC Input Diode Current (Iik) -20 mAVi = -0.5V +20 mAVi = Vcc +0.5V
DC Input Voltage (Vi) -0.5V to Vcc +0.5V
DC Output Diode Current (Iok) -20 mAVo = -0.5V +20 mAVo = Vcc +0.5V
DC Output Source or Sink Current (Io) +50 mA
DC Vcc or Ground Current per Output Pin (Icc or Ignd) +50 mA
Storage Temperature (Tstg) -65 C to +150 C
Junction Temperature (Tj) 175 C
DC Output Voltage (Vo) -0.5V to Vcc +0.5V
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 recommend operation of FACT TM circuits outside
databook specifications.
Recommended Operating Conditions
Supply Voltage (Vcc) 2.0V to 6.0V
Input Voltage (Vi) 0V to Vcc
Output Voltage (Vo) 0V to Vcc
Operating Temperature (Ta) -55 C to +125 C
Minimum Input Edge Rate (Delta V/Delta t)
AC Devices
Vin from 30% to 70% of Vcc 125 mV/nsVcc @ 3.0V, 4.5V, 5.5V
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MN54AC138-X REV 1B0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: VCC=3.0V to 5.5V, Temperature Range: -55 C to 125 C. NOTE: -55C TEMPERATURE, SUBGROUP 3 IS GUARANTEED
BUT NOT TESTED.
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
IIH High level input
current VCC=5.5V, VM=5.5V, VINL=0.0V 1, 2 INPUT 0.1 uA 1
1, 2 INPUT 1.0 uA 2, 3
IIL Low level input
current VCC=5.5V, VM=0.0V, VINH=5.5V 1, 2 INPUT -0.1 uA 1
1, 2 INPUT -1.0 uA 2, 3
VOL Low level output
voltage VCC=3.0V, VIL=0.9V, VIH=2.1V,
IOL=12.0mA 1, 2 OUTPUT .36 V 1
1, 2 OUTPUT .50 V 2, 3
VCC=3.0V, VIL=0.9V, VIH=2.1V,
IOL=50.0uA 1, 2 OUTPUT .10 V 1, 2,
3
VCC=4.5V, VIL=1.35V, VIH=3.15V,
IOL=24.0mA 1, 2 OUTPUT .36 V 1
1, 2 OUTPUT .50 V 2, 3
VCC=5.5V, VIL=1.65V, VIH=3.85,
IOL=24.0mA 1, 2 OUTPUT .36 V 1
1, 2 OUTPUT .50 V 2, 3
VCC=4.5V, VIL=1.35V, VIH=3.15V,
IOL=50.0uA 1, 2 OUTPUT .10 V 1, 2,
3
VCC=5.5V, VIH=3.85V, VIL=1.65V,
IOL=50.0uA 1, 2 OUTPUT .10 V 1, 2,
3
VIOL Dynamic Output
Current LOW VCC=5.5V, VIL=1.65V, VIH=3.85V,
IOL=50.0mA 1,
2, 5 OUTPUT 1.65 V 1, 2,
3
VOH High level output
voltage VCC=3.0V, VIL=0.9V, VIH=2.1V,
IOH=-50.0uA, VINH=3.0V, VINL=0.0V 1, 2 OUTPUT 2.90 V 1, 2,
3
VCC=3.0V, VIH=2.1V, VIL=0.90V,
IOH=-12.0mA, VINH=3.0V, VINL=0.0V 1, 2 OUTPUT 2.56 V 1
1, 2 OUTPUT 2.40 V 2, 3
VCC=5.5V, VIL=1.65V, VIH=3.85V,
IOH=-24.0mA, VINH=5.5V, VINL=0.0V 1, 2 OUTPUT 4.86 V 1
1, 2 OUTPUT 4.70 V 2, 3
VCC=5.5V, VIL=1.65V, VIH=3.85V,
IOH=-50.0uA, VINH=5.5V, VINL=0.0V 1, 2 OUTPUT 5.40 V 1, 2,
3
VCC=4.5V, VIH=3.15V, VIL=1.35V,
IOH=-24.0mA, VINH=4.5V, VINL=0.0V 1, 2 OUTPUT 3.86 V 1
1, 2 OUTPUT 3.70 V 2, 3
VCC=4.5V, VIL=1.35V, VIH=3.15V,
IOH=-50.0uA, VINH=4.5V, VINL=0.0V 1, 2 OUTPUT 4.40 V 1, 2,
3
VIOH Dynamic Output
Current HIGH VCC=5.5V, VIL=1.65V, VIH=3.85V,
IOH=-50.0mA 1,
2, 5 OUTPUT 3.85 V 1, 2,
3
ICCH Supply Current
Outputs HIGH VCC=5.5V, VINH=5.5V, VINL=0.0V 1, 2 VCC 4.0 uA 1
1, 2 VCC 80 uA 2, 3
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MN54AC138-X REV 1B0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS(Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: VCC=3.0V to 5.5V, Temperature Range: -55 C to 125 C. NOTE: -55C TEMPERATURE, SUBGROUP 3 IS GUARANTEED
BUT NOT TESTED.
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
ICCL Supply Current
Outputs LOW VCC=5.5V, VINH=5.5V, VINL=0.0V 1, 2 VCC 4.0 uA 1
1, 2 VCC 80 uA 2, 3
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC: CL=50pf, RL=500 OHMS, tr=3.0ns, tf=3.0ns, Temp Range: -55C to 125C. NOTE: -55C TEMPERATURE, SUBGROUP
11 IS GUARANTEED BUT NOT TESTED.
tpLH(1) Propagation Delay VCC=4.5V 3,
4, 6 An to
On 1.5 10.0 ns 9
3,
4, 6 An to
On 1.5 12.0 ns 10, 11
tpHL(1) Propagation Delay VCC=4.5V 3,
4, 6 An to
On 1.5 10.0 ns 9
3,
4, 6 An to
On 1.5 11.5 ns 10, 11
tpLH(2) Propagation Delay VCC=4.5V 3,
4, 6 E1 to
On 1.5 10.0 ns 9
3,
4, 6 E1 to
On 1.5 13.0 ns 10, 11
tpHL(2) Propagation Delay VCC=4.5V 3,
4, 6 E1 to
On 1.5 10.5 ns 9
3,
4, 6 E1 to
On 1.5 12.0 ns 10, 11
tpLH(3) Propagation Delay VCC=4.5V 3,
4, 6 E2 to
On 1.5 11.0 ns 9
3,
4, 6 E2 to
On 1.5 13.0 ns 10, 11
tpHL(3) Propagation Delay VCC=4.5V 3,
4, 6 E2 to
On 1.5 10.5 ns 9
3,
4, 6 E2 to
On 1.5 12.0 ns 10, 11
tpLH(4) Propagation Delay VCC=4.5V 3,
4, 6 E3 to
On 1.5 11.5 ns 9
3,
4, 6 E3 to
On 1.5 13.5 ns 10, 11
tpHL(4) Propagation Delay VCC=4.5V 3,
4, 6 E3 to
On 1.5 9.0 ns 9
3,
4, 6 E3 to
On 1.5 11.0 ns 10, 11
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MN54AC138-X REV 1B0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
AC PARAMETERS(Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC: CL=50pf, RL=500 OHMS, tr=3.0ns, tf=3.0ns, Temp Range: -55C to 125C. NOTE: -55C TEMPERATURE, SUBGROUP
11 IS GUARANTEED BUT NOT TESTED.
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
tpLH(5) Propagation Delay VCC=3.0V 3, 4 An to
On 1.0 13.0 ns 9
3, 4 An to
On 1.0 16.0 ns 10, 11
tpHL(5) Propagation Delay VCC=3.0V 3, 4 An to
On 1.5 12.5 ns 9
3, 4 An to
On 1.5 15.0 ns 10, 11
tpLH(6) Propagation Delay VCC=3.0V 3, 4 E1 to
On 1.0 15.0 ns 9
3, 4 E1 to
On 1.0 16.5 ns 10, 11
tpHL(6) Propagation Delay VCC=3.0V 3, 4 E1 to
On 1.0 13.5 ns 9
3, 4 E1 to
On 1.0 15.5 ns 10, 11
tpLH(7) Propagation Delay VCC=3.0V 3, 4 E2 to
On 1.0 15.0 ns 9
3, 4 E2 to
On 1.0 16.5 ns 10, 11
tpHL(7) Propagation Delay VCC=3.0V 3, 4 E2 to
On 1.0 13.5 ns 9
3, 4 E2 to
On 1.0 15.5 ns 10, 11
tpLH(8) Propagation Delay VCC=3.0V 3, 4 E3 to
On 1.0 15.5 ns 9
3, 4 E3 to
On 1.0 17.0 ns 10, 11
tpHL(8) Propagation Delay VCC=3.0V 3, 4 E3 to
On 1.0 13.0 ns 9
3, 4 E3 to
On 1.0 15.0 ns 10, 11
Note 1: SCREEN TESTED 100% ON EACH DEVICE AT +25C & +125C TEMPERATURE, SUBGROUPS 1, 2, 7, &
8.
Note 2: SAMPLE TESTED (METHOD 5005, TABLE 1) ON EACH MFG. LOT AT +25C & +125C TEMPERATURE,
SUBGROUPS A1, 2,7, & 8.
Note 3: SCREEN TESTED 100% ON EACH DEVICE AT +25C TEMPERATURE ONLY SUBGROUP A9.
Note 4: SAMPLE TESTED (METHOD 5005, TABLE 1) ON EACH MFG. LOT AT +25C & +125C TEMPERATURE,
SUBGROUPS A9 & 10.
Note 5: TRANSMISSION LINE DRIVING TEST, GUARDBAND LIMITS SET FOR +25C, 2 MSEC DURATION MAX.
Note 6: +25C & +125C MIN LIMITS GUARANTEED FOR 5.5V BY GUARDBANDING 4.5V MIN. LIMITS.
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