Philips Semiconductors

Product specification

74F573/74F574

Latch/flip-flop

1989 Oct 16

5

FUNCTION TABLE – 74F574

INPUTS

INTERNAL

OUTPUTS

OPERATING MODES

OE

CP

Dn

REGISTER

Q0 – Q7

OPERATING MODES

L

L

↑

↑

l

h

L

H

L

H

Load and read register

L

↑

X

NC

NC

Hold

H

↑

Dn

Dn

Z

Disable outputs

H = High voltage level

h = High voltage level one setup time prior to the Low-to-High clock transition

L = Low voltage level

l

= Low voltage level one setup time prior to the Low-to-High clock transition

NC= No change

X = Don’t care

Z = High impedance “off” state

↑ = Low-to-High clock transition

↑ = Not a Low-to-High clock transition

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 +5.0

mA

Voltage applied to output in High output state

V

Current applied to output in Low output state

48

mA

Operating free-air temperature range

0 to +70

°C

Storage temperature

–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

–3

mA

Low-level output current

24

mA

Operating free-air temperature range

0

70

°C