Philips Semiconductors

Product specification

74F641/74F642*

Transceivers

1999 Jan 08

5

* Discontinued part. Please see the Discontinued Products List.

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limits set forth in this table may impair the useful life of the device.

Unless otherwise noted these limits are over the operating free-air temperature range.)

SYMBOL

PARAMETER

RATING

UNIT

Supply voltage

–0.5 to +7.0

V

Input voltage

–0.5 to +7.0

V

Input current

–30 to +5

mA

Voltage applied to output in High output state

V

Current applied to output in Low output state

A0–A7

48

mA

Current a

lied to out ut in Low out ut state

B0–B7

128

mA

Operating free-air temperature range

0 to +70

°C

Storage temperature range

–65 to +150

°C

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

4.5

V

Low-level output current

A0–A7

24

mA

Low-level out ut current

B0–B7

64

mA

Operating free-air temperature range

0

70

°C

DC ELECTRICAL CHARACTERISTICS

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

NO TAG

LIMITS

SYMBOL

PARAMETER

MIN

TYP

NO TAG

MAX

UNIT

High-level output current

250

µA

A0–A7

V

MIN

0.35

0.50

V

Low-level output voltage

A0–A7

0.35

0.50

V

Low-level out ut voltage

B0–B7

0.38

0.55

V

B0–B7

IH

,

0.42

0.55

V

Input clamp voltage

–0.73

–1.2

V

Input current at maximum

T/R, OE

100

µA

input voltage

An, Bn

1

mA

High-level input current

T/R, OE

40

µA

High-level in ut current

An, Bn

20

µA

Low-level input current

T/R, OE

–40

µA

Low-level in ut current

An, Bn

–20

µA

74F641

An=T/R=4.5, OE=GND

60

90

mA

Supply current

74F641

T/R=4.5V, An=OE=GND

78

120

mA

y

(total)

74F642

An=T/R=OE=4.5V

37

55

mA

74F642

An=T/R=4.5V, OE=GND

67

98

mA

NOTES:

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