Philips Semiconductors

Product specification

74ALS174

Hex D flip-flop

1991 Feb 08

3

LOGIC DIAGRAM

SF00192

CP

D

MR

1

CP

9

GND = Pin 8

Q

D0

3

Q0

2

CP

D

Q

D1

4

Q1

5

CP

D

Q

D2

6

Q2

7

CP

D

Q

D3

11

Q3

10

CP

D

Q

D4

13

Q4

12

CP

D

Q

D5

14

Q5

15

FUNCTION TABLE

INPUTS

OUTPUTS

OPERATING

MR

CP

D

MODE

L

X

X

L

Reset (clear)

H

↑

h

H

Load “1”

H

↑

I

L

Load “0”

NOTES:

H = High-voltage level

h

= High state must be present one setup time before the Low-to-High clock transition

L

= Low-voltage level

l

= Low state must be present one setup time before the Low-to-High clock transition

X = Don’t care

↑ = Low-to-High clock transition

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

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

16

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

–0.4

mA

Low-level output current

8

mA

Operating free-air temperature range

0

+70

°C