HD74HC688

Rev.2.00, Mar 30, 2006 page 4 of 7

Recommended Operating Conditions

Item

Symbol

Ratings

Unit

Conditions

Supply voltage

2 to 6

V

Input / Output voltage

V

Operating temperature

Ta

–40 to 85

°C

0 to 1000

0 to 500

Input rise / fall time

*1

0 to 400

ns

Notes: 1. This item guarantees maximum limit when one input switches.

Waveform: Refer to test circuit of switching characteristics.

Electrical Characteristics

Ta = 25°C

Ta = –40 to+85°C

Item

Symbol

Min

Typ

Max

Min

Max

Unit

Test Conditions

2.0

1.5

—

—

1.5

—

4.5

3.15

—

—

3.15

—

6.0

4.2

—

—

4.2

—

V

2.0

—

—

0.5

—

0.5

4.5

—

—

1.35

—

1.35

Input voltage

6.0

—

—

1.8

—

1.8

V

2.0

1.9

2.0

—

1.9

—

4.5

4.4

4.5

—

4.4

—

6.0

5.9

6.0

—

5.9

—

4.5

4.18

—

—

4.13

—

6.0

5.68

—

—

5.63

—

V

2.0

—

0.0

0.1

—

0.1

4.5

—

0.0

0.1

—

0.1

6.0

—

0.0

0.1

—

0.1

µA

4.5

—

—

0.26

—

0.33

Output voltage

6.0

—

—

0.26

—

0.33

V

Input current

Iin

6.0

—

—

±0.1

—

±1.0

Quiescent supply

current

6.0

—

—

4.0

—

40

Switching Characteristics

Ta = 25°C

Ta = –40 to +85°C

Item

Min

Typ

Max

Min

Max

Unit

Test Conditions

2.0

—

—

210

—

265

4.5

—

17

42

—

53

6.0

—

—

36

—

45

ns

P or Q to output

2.0

—

—

120

—

150

4.5

—

9

24

—

30

Propagation delay time

6.0

—

—

20

—

26

ns

Enable to P=Q

2.0

—

—

75

—

95

4.5

—

5

15

—

19

Output rise/fall time

6.0

—

—

13

—

16

ns

Input capacitance

Cin

—

—

5

10

—

10

pF