HD74HC390 Ver la hoja de datos (PDF) - Renesas Electronics

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HD74HC390

Dual Decade Counters

Renesas Electronics 

HD74HC390

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

Item

Maximum clock

frequency

Propagation delay

time

Pulse width

Removal time

Output rise/fall

time

Input capacitance

Symbol VCC (V)

fmax

2.0

4.5

6.0

tPLH

2.0

tPHL

4.5

6.0

tPLH

2.0

tPHL

4.5

6.0

tPLH

2.0

tPHL

4.5

6.0

tPLH

2.0

tPHL

4.5

6.0

tPLH

2.0

tPHL

4.5

6.0

tPHL

2.0

4.5

6.0

tw

2.0

4.5

6.0

th

2.0

4.5

6.0

tTLH

2.0

tTHL

4.5

6.0

Cin

—

Ta = 25°C

Min Typ Max

——

5

— — 27

— — 32

— — 120

— 11 24

— — 20

— — 290

— 32 58

— — 49

— — 130

— 16 26

— — 22

— — 185

— 20 37

— — 31

— — 130

— 15 26

— — 22

— — 165

— 14 33

— — 28

80 — —

16 8 —

14 — —

25 — —

5

1—

4 ——

— — 75

— 5 15

— — 13

— 5 10

Ta = –40 to +85°C

Min

Max Unit

Test Conditions

—

4 MHz

—

21

—

25

—

150 ns Clock A to QA

—

30

—

26

—

365 ns Clock A to QC

—

73

(QA connected to Clock B)

—

62

—

165 ns Clock B to QB

—

33

—

28

—

230 ns Clock B to QC

—

46

—

39

—

165 ns Clock B to QD

—

33

—

28

—

205 ns Clear to QA, QB, QC, QD

—

41

—

35

100

—

ns

20

—

17

—

31

—

ns

6

—

5

—

—

95

ns

—

19

—

16

—

10 pF

Test Circuit

VCC

Input

Pulse Generator

Zout = 50 Ω

Input

Pulse Generator

Zout = 50 Ω

VCC

Output

A

B

Clear

QA

Output

CL = 50 pF

QB

Output

QC

Output

QD

CL = 50 pF

CL = 50 pF

CL = 50 pF

Note : 1. CL includes probe and jig capacitance.

Rev.2.00 Mar 30, 2006 page 4 of 6

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