Philips Semiconductors

Product specification

74F827, 74F828

Buffers

1994 Dec 05

5

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

–24

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

MAX

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

MIN

TYP

MAX

2.4

V

High-level output voltage

2.4

3.3

V

High-level out ut voltage

2.0

V

2.0

V

Low-level output voltage

0.55

V

Low-level out ut 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 voltage applied

50

µA

Off-state output current,

Low voltage applied

–50

µA

–100

–225

mA

50

70

mA

74F827

70

100

mA

Supply current

60

90

mA

y

(total)

30

45

mA

74F828

65

85

mA

55

70

mA

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under 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