Philips Semiconductors

Product specification

74F242/74F243

Transceivers

1990 Aug 30

5

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

MAX

UNIT

2.4

V

V

High level output voltage

2.7

3.3

V

High-level output voltage

I

= 15mA

2.0

3.2

V

2.0

3.1

V

V

Low level output voltage

I

=MAX

0.55

V

Low-level output voltage

0.42

0.55

V

Input clamp voltage

–0.73

–1.2

V

Input current at

A0–A3, B0–B3

1

mA

maximum input voltage

100

µA

High-level input current

20

µA

Low-level input current

only

–1

mA

Off-state output current

High-level voltage applied

70

µA

I +I

Off-state output current

Low-level voltage

74F242

V

= MAX V =0 5V

–1.0

mA

Low-level voltage

applied

74F243

–1.6

mA

–100

–225

mA

22

35

mA

74F242

40

55

mA

Supply current (total)

32

45

mA

Supply current (total)

64

80

mA

74F243

64

90

mA

71

90

mA

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.

techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting

of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any