Philips Semiconductors

Product specification

74F579

8-bit bidirectional binary counter (3-State)

1992 May 04

6

DC ELECTRICAL CHARACTERISTICS

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

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

MAX

UNIT

TC

V

MAX

2.5

V

High level output voltage

TC

2.7

3.4

V

High-level output voltage

I/O

IH

2.4

3.3

V

for MR, CP inputs)

2.7

3.3

V

Low level output voltage

V

MAX

0.35

0.50

V

Low-level output voltage

0.35

0.50

V

Input clamp voltage

–0.73

–1.2

V

I

Input current

1

mA

at maximum input voltage

others

100

µA

High-level input current

except

20

µA

Low-level input current

–0.6

mA

Off-state output current

High-level voltage applied

I/O

70

µA

Off-state output current

Low-level voltage applied

–600

µA

–60

–150

mA

95

135

mA

Supply current (total)

105

145

mA

105

150

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