SN54HC374, SN74HC374

OCTAL EDGETRIGGERED DTYPE FLIPFLOPS

WITH 3STATE OUTPUTS

SCLS141D – DECEMBER 1982 – REVISED DECEMBER 2002

4

POST OFFICE BOX 655303

timing requirements over recommended operating free-air temperature range (unless otherwise

noted)

V

TA = 25°C

SN54HC374

SN74HC374

UNIT

VCC

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

2 V

6

4

5

fclock

Clock frequency

4.5 V

30

20

24

MHz

fclock

Clock frequency

6 V

35

24

28

MHz

2 V

80

120

100

tw

Pulse duration, CLK high or low

4.5 V

16

24

20

ns

tw

Pulse duration, CLK high or low

6 V

14

20

17

ns

2 V

100

150

125

tsu

Setup time, data before CLK

↑

4.5 V

20

30

25

ns

tsu

Setu time, data before CLK

↑

6 V

17

25

21

ns

2 V

10

13

12

th

Hold time, data after CLK

↑

4.5 V

5

5

5

ns

h

,

6 V

5

5

5

(unless otherwise noted) (see Figure 1)

PARAMETER

FROM

TO

V

TA = 25°C

SN54HC374

SN74HC374

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

2 V

6

12

4

5

fmax

4.5 V

30

60

20

24

MHz

fmax

6 V

35

70

24

28

MHz

2 V

63

180

270

225

tpd

CLK

Any Q

4.5 V

17

36

54

45

ns

t d

CLK

Any Q

6 V

15

31

46

38

ns

2 V

60

150

225

190

ten

OE

Any Q

4.5 V

16

30

45

38

ns

ten

OE

Any Q

6 V

14

26

38

32

ns

2 V

36

150

225

190

tdis

OE

Any Q

4.5 V

17

30

45

38

ns

tdis

OE

Any Q

6 V

16

26

38

32

ns

2 V

28

60

90

75

tt

Any Q

4.5 V

8

12

18

15

ns

t

yQ

6 V

6

10

15

13