HD74HC669FPEL datasheet(7/11 Pages) RENESAS

Part #	HD74HC669FPEL

Description	Synchronous UP/Down Decade Counter, Synchronous Up/Down 4-bit binary Counter

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Manufacturer	RENESAS [Renesas Technology Corp]

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7 / 11 page

HD74HC668, HD74HC669

Rev.2.00 Mar 30, 2006 page 7 of 10

Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns)

Ta = 25

°C

Ta = –40 to +85

°C

Item

Symbol VCC (V)

Min

Typ

Max

Min

Max

Unit

Test Conditions

2.0

—

5

—

4

4.5

—

27

—

21

Maximum clock

Frequency

fmax

6.0

—

32

—

25

MHz

2.0

—

200

—

250

4.5

—

40

—

50

tPLH

tPHL

6.0

—

34

—

43

ns

Clock to Ripple carry out

2.0

—

225

—

280

4.5

—

45

—

56

tPLH

tPHL

6.0

—

38

—

48

ns

Clock to Q

2.0

—

150

—

190

4.5

—

30

—

38

tPLH

tPHL

6.0

—

26

—

33

ns

Enable

T to Ripple carry out

2.0

—

200

—

250

4.5

—

40

—

50

Propagation delay

time

tPLH

tPHL

6.0

—

34

—

43

ns

U/

D to Ripple carry out

2.0

80

—

100

—

4.5

16

—

20

—

Pulse width

tw

6.0

14

—

17

—

ns

2.0

100

—

125

—

4.5

20

—

25

—

tsu

6.0

17

—

21

—

ns

Data to Clock

2.0

150

—

190

—

4.5

30

—

38

—

tsu

6.0

26

—

33

—

ns

Enable

P, T to Clock

2.0

150

—

190

—

4.5

30

—

38

—

tsu

6.0

26

—

33

—

ns

Loadk to Clock

2.0

150

—

190

—

4.5

30

—

38

—

Setup time

tsu

6.0

26

—

33

—

ns

U/

D to Clock

2.0

5

—

5

—

4.5

5

—

5

—

Hold time

th

6.0

5

—

5

—

ns

2.0

—

75

—

95

4.5

—

5

15

—

19

Output rise/fall

time

tTLH

tTHL

6.0

—

13

—

16

ns

Input capacitance

Cin

—

5

10

—

10

pF

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