TC74HC191AF datasheet(7/12 Pages) TOSHIBA

Part #	TC74HC191AF

Description	4-Bit Binary Up/Down Counter

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

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TC74HC191AP/AF

2007-10-01

7

Timing Requirements (input: tr = tf = 6 ns)

Test Condition

Ta

= 25°C

Ta

=

−40

~85°C

Characteristics

Symbol

VCC (V)

Typ.

Limit

Unit

Minimum pulse width

(CK)

tW (H)

tW (L)

⎯

2.0

4.5

6.0

⎯

100

20

17

125

25

21

ns

Minimum pulse width

( LOAD )

tW (L)

⎯

2.0

4.5

6.0

⎯

75

15

13

95

19

16

ns

Minimum set-up time

( ENABLE , D/ U )

ts

⎯

2.0

4.5

6.0

⎯

150

30

26

190

38

33

ns

Minimum set-up time

(DATA- LOAD )

ts

⎯

2.0

4.5

6.0

⎯

50

10

9

65

13

11

ns

Minimum hold time

( ENABLE , D/ U )

th

⎯

2.0

4.5

6.0

⎯

0

ns

Minimum hold time

(DATA- LOAD )

th

⎯

2.0

4.5

6.0

⎯

0

ns

Minimum removal time

trem

⎯

2.0

4.5

6.0

⎯

50

10

9

65

13

11

ns

Clock frequency

f

⎯

2.0

4.5

6.0

⎯

5

25

29

4

20

24

MHz

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