SN54HC377, SN74HC377

OCTAL DTYPE FLIPFLOPS

WITH CLOCK ENABLE

SCLS307B– JANUARY 1996 – REVISED JANUARY 2003

4

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

V

TA = 25°C

SN54HC377

SN74HC377

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

2 V

1.9

1.998

1.9

1.9

IOH = –20 µA

4.5 V

4.4

4.499

4.4

4.4

VOH

VI = VIH or VIL

IOH

20

µA

6 V

5.9

5.999

5.9

5.9

V

VOH

VI VIH or VIL

IOH = –4 mA

4.5 V

3.98

4.3

3.7

3.84

V

IOH = –5.2 mA

6 V

5.48

5.8

5.2

5.34

2 V

0.002

0.1

0.1

0.1

IOL = 20 µA

4.5 V

0.001

0.1

0.1

0.1

VOL

VI = VIH or VIL

IOL 20 µA

6 V

0.001

0.1

0.1

0.1

V

VOL

VI VIH or VIL

IOL = 4 mA

4.5 V

0.17

0.26

0.4

0.33

V

IOL = 5.2 mA

6 V

0.15

0.26

0.4

0.33

II

VI = VCC or 0

6 V

±0.1

±100

±1000

±1000

nA

ICC

VI = VCC or 0,

IO = 0

6 V

8

160

80

µA

Ci

2 V to 6 V

3

10

10

10

pF

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

noted)

V

TA = 25°C

SN54HC377

SN74HC377

UNIT

VCC

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

2 V

5

3

4

fclock

Clock frequency

4.5 V

25

16

20

MHz

fclock

Clock frequency

6 V

29

19

23

MHz

2 V

100

150

125

tw

Pulse duration, CLK high or low

4.5 V

20

30

25

ns

tw

Pulse duration, CLK high or low

6 V

17

25

21

ns

2 V

100

150

125

D

4.5 V

20

30

25

t

Set p time before CLK

↑

D

6 V

17

25

21

ns

tsu

Setup time before CLK

↑

2 V

100

150

125

ns

CLKEN high or low

4.5 V

20

30

25

CLKEN high or low

6 V

17

25

21

2 V

5

5

5

th

Hold time after CLK

↑

CLKEN inactive or active, data

4.5 V

5

5

5

ns

h

,

6 V

5

5

5