Philips Semiconductors

Product specification

74F1240, 74F1241*

Buffers

1999 Jan 08

5

* Discontinued part. Please see the Discontinued Products List.

RECOMMENDED OPERATING CONDITIONS

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

NOM

MAX

UNIT

Supply voltage

4.5

5.0

5.5

V

High-level input voltage

2.0

V

Low-level input voltage

0.8

V

Input clamp current

–18

mA

High-level output current

–15

mA

Low-level output current

64

mA

Operating free-air temperature range

0

+70

°C

DC ELECTRICAL CHARACTERISTICS

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

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

TYP

MAX

UNIT

2.4

V

High level output voltage

2.7

3.3

V

High-level output voltage

2.0

V

2.0

V

Low level output voltage

0.38

0.55

V

Low-level output voltage

0.42

0.55

V

Input clamp voltage

–0.73

–1.2

V

Input current at maximum input voltage

100

µA

High-level input current

20

µA

Low-level input current

–20

µA

Off-state output current,

High-level voltage applied

50

µA

Off-state output current,

Low-level voltage applied

–50

µA

–100

–225

mA

22

30

mA

74F1240

58

75

mA

Supply current (total)

44

58

mA

Supply current (total)

33

44

mA

74F1241

62

80

mA

45

60

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