Philips Semiconductors

Product specification

74F240/74F240A/

74F241/74F241A

Buffers

January 2, 1991

6

DC ELECTRICAL CHARACTERISTICS

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

SYMBOL

PARAMETER

TEST

LIMITS

UNIT

MIN

MAX

C

2.4

V

High-level output voltage

2.7

3.4

V

–15mA

C

2.0

V

2.0

V

Low-level output voltage

C

0.50

V

0.42

0.50

V

Input clamp voltage

–0.73

-1.2

V

Input current at maximum input voltage

100

µA

High–level input current

20

µA

74F240 all inputs

–1.0

mA

74F240A all inputs

–100

µA

Low–level input current

74F241 OEa, OEb

–1.0

mA

74F241 Ian, Ibn

–1.6

mA

74F241A all inputs

–40

µA

Off–state output current,

high–level voltage applied

50

µA

Off–state output current,

low–level voltage applied

–50

µA

-100

-225

mA

12

18

mA

74F240

50

70

mA

35

45

mA

28

37

mA

74F240A

58

75

mA

Supply current (total)

34

50

mA

40

60

mA

74F241

60

90

mA

65

90

mA

20

30

mA

74F241A

49

65

mA

26

40

mA

Notes to DC electrical characteristics

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