Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature Range
DM54 b55§Ctoa
125§C
Storage Temperature Range b65§Ctoa
150§C
Note:
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Recommended Operating Conditions
Symbol Parameter DM54148 Units
Min Nom Max
VCC Supply Voltage 4.5 5 5.5 V
VIH High Level Input Voltage 2 V
VIL Low Level Input Voltage 0.8 V
IOH High Level Output Current b0.8 mA
IOL Low Level Output Current 16 mA
TAFree Air Operating Temperature b55 125 §C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min Typ Max Units
(Note 1)
VIInput Clamp Voltage VCC eMin, IIeb
12 mA b1.5 V
VOH High Level Output VCC eMin, IOH eMax 2.4 V
Voltage VIL eMax, VIH eMin
VOL Low Level Output VCC eMin, IOL eMax 0.4 V
Voltage VIH eMin, VIL eMax
IIInput Current @Max VCC eMax, VIe5.5V 1mA
Input Voltage
IIH High Level Input VCC eMax 0 Input 40 mA
Current VIe2.4V Others 80
IIL Low Level Input VCC eMax 0 Input b1.6 mA
Current VIe0.4V Others b3.2
IOS Short Circuit VCC eMax (Note 2) b35 b85 mA
Output Current
ICC1 Supply Current VCC eMax (Note 3) 40 60 mA
ICC2 Supply Current VCC eMax (Note 4) 35 55 mA
Note 1: All typicals are at VCC e5V, TAe25§C.
Note 2: Not more than one output should be shorted at a time.
Note 3: ICC1 is measured with inputs E1 and 7 grounded, other inputs and outputs open.
Note 4: ICC2 is measured with all inputs and all outputs open.
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