74ALS109AN datasheet(3/9 Pages) PHILIPS

Teilenummer	74ALS109AN

Bauteilbeschribung	Dual J-K positive edge-triggered flip-flop with set and reset

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Hersteller	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product specification

74ALS109A

Dual J-K positive edge triggered flip-flop

with set and reset

1991 Feb 08

3

LOGIC DIAGRAM

VCC = Pin 16

GND = Pin 8

4, 12

SC00042

SD

RD

5, 11

1, 15

CP

J

K

2, 14

3, 13

6, 10

7, 9

Q

FUNCTION TABLE

INPUTS

OUTPUTS

OPERATING

SD

RD

CP

J

K

Q

MODE

L

H

X

H

L

Asynchronous set

H

L

X

L

H

Asynchronous reset

L

X

H*

Undetermined*

H

↑

h

l

q

Toggle

H

↑

l

L

H

Load “0”

H

↑

h

H

L

Load “1”

H

↑

l

h

q

Hold “no change”

H

L

l

h

q

Hold “no change”

H = High voltage level

h

= High state must be present one setup time prior to

Low-to-High clock transition

L

= Low voltage level

l

= Low state must be present one setup time prior to

Low-to-High clock transition

q

= Lower case indicate the state of the referenced output prior to

the Low-to-High clock transition

X = Don’t care

↑ = Low-to-High clock transition

*

= The output levels in this configuration are not guaranteed to

meet the minimum levels for VOH if the set and reset are near

VIN maximum. Furthermore, this configuration is nonstable;

that is, it will not remain when either set or reset returns to its

inactive (High) level.

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limit 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

VCC

Supply voltage

–0.5 to +7.0

V

VIN

Input voltage

–0.5 to +7.0

V

IIN

Input current

–30 to +5

mA

VOUT

Voltage applied to output in high output state

–0.5 to VCC

V

IOUT

Current applied to output in Low output state

16

mA

Tamb

Operating free-air temperature range

0 to +70

°C

Tstg

Storage temperature range

–65 to +150

°C

RECOMMENDED OPERATING CONDITIONS

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5.0

5.5

V

VIH

High-level input voltage

2.0

V

VIL

Low-level input voltage

0.8

V

IIk

Input clamp current

–18

mA

IOH

High-level output current

–0.4

mA

IOL

Low-level output current

8

mA

Tamb

Operating free-air temperature range

0

+70

°C

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