Philips Semiconductors

Product specification

74F620/74F623

Transceivers

1990 Apr 6

6

DC ELECTRICAL CHARACTERISTICS

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

NO TAG

LIMITS

SYMBOL

PARAMETER

MIN

TYP

NO TAG

MAX

UNIT

A0–A7

2.4

V

High level output voltage

B0–B7

2.7

3.3

V

High-level output voltage

B0 B7

2.0

V

B0–B7

2.0

V

A0 A7

0.35

0.50

V

Low level output voltage

A0–A7

0.35

0.50

V

Low-level output voltage

B0 B7

0.38

0.55

V

B0–B7

0.42

0.55

V

Input clamp voltage

–0.73

–1.2

V

Input current at maximum

input voltage

OEBA,

OEAB

100

µA

I

in ut voltage

others

1

mA

High-level input current

OEBA,

OEAB

20

µA

Low-level input current

OEAB

only

–20

µA

Off-state output current,

High-level of voltage applied

A0–A7

70

µA

Off-state output current,

Low-level of voltage applied

B0–B7

–70

µA

Short-circuit output cur-

NO TAG

A0–A7

–60

–150

mA

B0–B7

–100

–225

mA

OEBA=OEAB=4.5V;

A0–A7=GND

70

92

mA

74F620

OEBA=OEAB=4.5V;

A0–A7=4.5V

84

110

mA

Supply current

OEAB=GND;

OEBA=A0–A7=4.5V

84

110

mA

y

(total)

OEBA=OEAB=4.5V;

A0–A7=4.5V

110

140

mA

74F623

OEBA=OEAB=4.5V;

A0–A7=GND

110

140

mA

OEAB=GND;

OEBA=A0–A7=4.5V

99

130

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