HD74HC4020 Просмотр технического описания (PDF) - Renesas Electronics

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Компоненты Описание

производитель

HD74HC4020

14-stage Binary Counter

Renesas Electronics 

HD74HC4020

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

Item

Maximum clock

frequency

Propagation delay

time

Removal time

Pulse width

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

trem

2.0

4.5

6.0

tw

2.0

4.5

6.0

tTLH

2.0

tTHL

4.5

6.0

Cin

—

Ta = 25°C

Min Typ Max

—— 5

— — 25

— — 29

— — 175

— 14 35

— — 30

— — 175

— 14 35

— — 30

— — 200

— 18 40

— — 34

— — 100

— — 20

— — 17

100 — —

20 6 —

17 — —

80 — —

16 4 —

14 — —

— — 75

—

5

15

— — 13

—

5

10

Ta = –40 to +85°C

Min

Max Unit

Test Conditions

—

4 MHz

—

20

—

24

—

220 ns Clock to Q1

—

44

—

37

—

220 ns Clock to Q1

—

44

—

37

—

250 ns Reset to output

—

50

—

43

—

125

ns Qn to Qn – 1

—

25

—

21

125

—

ns

25

—

21

—

100

—

ns

20

—

17

—

—

95

ns

—

19

—

16

—

10

pF

Test Circuit

VCC

VCC

Input

Pulse Generator

Zout = 50 Ω

Input

Pulse Generator

Zout = 50 Ω

Clock

Q1

Reset

Q14

Output

Output

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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