Absolute Maximum Ratings (Note 1)
Supply Voltage (VCC)b0.5V to a7.0V
DC Input Voltage (VIN)b0.5V to a7.0V
DC Output Voltage (VOUT)b0.5V to VCC a0.5V
Input Diode Current (IIK)b20 mA
Output Diode Current (IOK)g20 mA
DC Output Current (IOUT)g25 mA
DC VCC/GND Current (ICC)g75 mA
Storage Temperature (TSTG)b65§Ctoa
150§C
Lead Temperature (TL)
(Soldering, 10 sec.) 260§C
Note 1:
Absolute Maximum Ratings are values beyond
which the device may be damaged or have its useful life
impaired. The databook specifications should be met, with-
out exception, to ensure that the the system design is reli-
able over its power supply, temperature, and output/input
loading variables. National does not recommend operation
outside databook specifications.
Recommended Operating
Conditions
Supply Voltage (VCC) 2.0V to a5.5V
Input Voltage (VIN)0Vto
a
5.5V
Output Voltage (VOUT) 0VtoV
CC
Operating Temperature (TOPR)
74VHC b40§Ctoa
85§C
Input Rise and Fall Time (tr,t
f
)
V
CC e3.3V g0.3V 0 E100 ns/V
VCC e5.0V g0.5V 0 E20 ns/V
DC Characteristics for ’VHC Family Devices
Symbol Parameter VCC
(V)
74VHC 74VHC
Units Conditions
TAe25§CTAeb
40§C
to a85§C
Min Typ Max Min Max
VIH High Level Input 2.0 1.50 1.50 V
Voltage 3.0– 5.5 0.7 VCC 0.7 VCC
VIL Low Level Input 2.0 0.50 0.50 V
Voltage 3.0– 5.5 0.3 VCC 0.3 VCC
VOH High Level Output 2.0 1.9 2.0 1.9 VIN eVIH IOH eb
50 mA
Voltage 3.0 2.9 3.0 2.9 V or VIL
4.5 4.4 4.5 4.4
3.0 2.58 2.48 VIOH eb
4mA
4.5 3.94 3.80 IOH eb
8mA
V
OL Low Level Output 2.0 0.0 0.1 0.1 VIN eVIH IOL e50 mA
Voltage 3.0 0.0 0.1 0.1 V or VIL
4.5 0.0 0.1 0.1
3.0 0.36 0.44 VIOL e4mA
4.5 0.36 0.44 IOL e8mA
I
IN Input Leakage 0– 5.5 g0.1 g1.0 mAVIN e5.5V or GND
Current
ICC Quiescent Supply 5.5 4.0 40.0 mAVIN eVCC or GND
Current
3