Absolute Maximum Rating (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (VCC)b0.5V to a7.0V
DC Input Diode Current (IIK)
VIeb
0.5V b20 mA
VIeVCC a0.5V a20 mA
DC Input Voltage (VI)b0.5V to VCC a0.5V
DC Output Diode Current (IOK)
VOeb
0.5V b20 mA
VOeVCC a0.5V a20 mA
DC Output Voltage (VO)b0.5V to VCC a0.5V
DC Output Source
or Sink Current (IO)g50 mA
DC VCC or Ground Current
per Output Pin (ICC or IGND)g50 mA
Storage Temperature (TSTG)b65§Ctoa
150§C
Junction Temperature (TJ)
CDIP 175§C
PDIP 140§C
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 FACTTM circuits outside databook specifications.
Recommended Operating
Conditions
Supply Voltage (VCC)
’AC 2.0V to 6.0V
’ACT 4.5V to 5.5V
Input Voltage (VI) 0VtoV
CC
Output Voltage (VO) 0VtoV
CC
Operating Temperature (TA)
74AC/ACT b40§Ctoa
85§C
54AC b55§Ctoa
125§C
Minimum Input Edge Rate (DV/Dt)
’AC Devices
VIN from 30% to 70% of VCC
VCC @3.3V, 4.5V, 5.5V 125 mV/ns
Minimum Input Edge Rate (DV/Dt)
’ACT Devices
VIN from 0.8V to 2.0V
VCC @4.5V, 5.5V 125 mV/ns
DC Characteristics for ’AC Family Devices
74AC 54AC 74AC
Symbol Parameter VCC TAea
25§CTAeTAeUnits Conditions
(V) b55§Ctoa
125§Cb40§Ctoa
85§C
Typ Guaranteed Limits
VIH Minimum High Level 3.0 1.5 2.1 2.1 2.1 VOUT e0.1V
Input Voltage 4.5 2.25 3.15 3.15 3.15 V or VCC b0.1V
5.5 2.75 3.85 3.85 3.85
VIL Maximum Low Level 3.0 1.5 0.9 0.9 0.9 VOUT e0.1V
Input Voltage 4.5 2.25 1.35 1.35 1.35 V or VCC b0.1V
5.5 2.75 1.65 1.65 1.65
VOH Minimum High Level 3.0 2.99 2.9 2.9 2.9 IOUT eb
50 mA
Output Voltage 4.5 4.49 4.4 4.4 4.4 V
5.5 5.49 5.4 5.4 5.4
*VIN eVIL or VIH
3.0 2.56 2.4 2.46 b12 mA
4.5 3.86 3.7 3.76 V IOH b24 mA
5.5 4.86 4.7 4.76 b24 mA
VOL Maximum Low Level 3.0 0.002 0.1 0.1 0.1 IOUT e50 mA
Output Voltage 4.5 0.001 0.1 0.1 0.1 V
5.5 0.001 0.1 0.1 0.1
*VIN eVIL or VIH
3.0 0.36 0.5 0.44 12 mA
4.5 0.36 0.5 0.44 V IOL 24 mA
5.5 0.36 0.5 0.44 24 mA
IIN Maximum Input 5.5 g0.1 g1.0 g1.0 mAVIeVCC, GND
Leakage Current
*All outputs loaded; thresholds on input associated with output under test.
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