HD74HC620 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

比赛名单

HD74HC620

Octal Bus Transceivers

Renesas Electronics 

HD74HC620, HD74HC623

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

Item

Propagation delay

time

Output enable

time

Output disable

time

Output rise/fall

time

Input capacitance

Symbol VCC (V)

tPLH

2.0

tPHL

4.5

6.0

tZH

2.0

tZL

4.5

6.0

tHZ

2.0

tLZ

4.5

6.0

tTLH

2.0

tTHL

4.5

6.0

Cin

—

Ta = 25°C

Min Typ Max

— — 100

— 12 20

— — 17

— — 150

— 12 30

— — 26

— — 150

— 16 30

— — 26

— — 60

— 4 12

— — 10

— 5 10

Ta = –40 to +85°C

Min

Max Unit

—

125 ns

—

25

—

21

—

190 ns

—

38

—

33

—

190 ns

—

38

—

33

—

75

ns

—

15

—

13

—

10

pF

Test Circuit

HD74HC620

VCC

VCC

Test Conditions

Input

Pulse Generator

Zout = 50 Ω

GBA

GAB

S1

A1

B1

Output

1 kΩ S2

CL =

50 pF

OPEN

GND

VCC

TEST

tPLH / t PHL

tZH/ t HZ

tZL / t LZ

S2

OPEN

GND

VCC

Notes : 1. CL includes probe and jig capacitance.

2. A2–B2, A3–B3, A4–B4, A5–B5, A6–B6, A7–B7, A8–B8 are identical to above load circuit.

3. S1 is a input / output swich.

Rev.2.00 Mar 30, 2006 page 6 of 11

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