DocID1973 Rev 2

5/12

M74HC42

Absolute maximum ratings and operating conditions

2

Absolute maximum ratings and operating conditions

Note:

Absolute maximum ratings are those values beyond which damage to the device may occur.

Functional operation under these conditions is not implied.

Table 4. Absolute maximum ratings

Symbol

Parameter

Value

Unit

VCC

Supply voltage

-0.5 to +7

V

VI

DC input voltage

-0.5 to VCC + 0.5

V

VO

DC output voltage

-0.5 to VCC + 0.5

V

IIK

DC input diode current

 20

mA

IOK

DC output diode current

 20

mA

IO

DC output current

 25

mA

ICC or

IGND

DC VCC or ground current

 50

mA

PD

Power dissipation

500(1)

1. 500 mW at 65

C. Derate to 300 mW by 10 mW/C from 65 C to 85 C.

mW

Tstg

Storage temperature

-65 to +150

°C

TL

Lead temperature (10 sec.)

300

°C

Table 5. Recommended operating conditions

Symbol

Parameter

Value

Unit

VCC

Supply voltage

2 to 6

V

VI

Input voltage

0 to VCC

V

VO

Output voltage

0 to VCC

V

Top

Operating temperature

-55 to 125

°C

tr, tf

Input rise and fall time

VCC = 2 V

0 to 1000

ns

VCC = 4.5 V

0 to 500

ns

VCC = 6 V

0 to 400

ns

Obsolete

Product(s)

- Obsolete

Product(s)