If MilitaryAerospace specified devices are required

please contact the National Semiconductor Sales

OfficeDistributors for availability and specifications

Voltage at any Input Pin

b

Voltage at any Output Pin

32V

Operating Temperature Range

MM74C908MM74C918

b

4V to 18V

19V

500 mA

b

(Soldering 10 seconds)

260 C

Refer to Maximum Power

Dissipation vs Ambient

Temperature Graph

Symbol

Parameter

Conditions

Min

Typ

Max

Units

CMOS TO CMOS

Logical ‘‘1’’ Input Voltage

35

V

80

V

Logical ‘‘0’’ Input Voltage

15

V

20

V

Logical ‘‘1’’ Input Current

0005

10

m

A

Logical ‘‘0’’ Input Current

b

10

b

0005

m

A

Supply Current

005

15

m

A

Output ‘‘OFF’’ Voltage

b

30

V

CMOSLPTTL INTERFACE

Logical ‘‘1’’ Input Voltage

MM74C908MM74C918

V

Logical ‘‘0’’ Input Voltage

MM74C908MM74C918

08

V

OUTPUT DRIVE

Output Voltage

V

V

V

Output Resistance

60

90

X

75

12

X

18

X

Output Resistance

055

080

% C

Coefficient

Thermal Resistance

(Note 3)

100

110

CW

MM74C908MM74C918

(Note 3)

45

55

CW

AC Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Propagation Delay

150

300

ns

to a Logical ‘‘1’’

65

120

ns

Propagation Delay

20

10

m

s

to a Logic ‘‘0’’

40

20

m

s

Input Capacitance

(Note 2)

50

pF

AC Parameters are guaranteed by DC correlated testing

Note 1

‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed Except for ‘‘Operating Temperature Range’’

they are not meant to imply that the devices should be operated at these limits The table of ‘‘Electrical Characteristics’’ provides conditions for actual device

operation

Note 2

Capacitance is guaranteed by periodic testing

2