HD74HC640RPEL(2010) 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

HD74HC640RPEL
(Rev.:2010)

Octal Bus Transceivers (with 3-state outputs)

Renesas Electronics 

HD74HC640, HD74HC643

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)

tPHL

2.0

4.5

6.0

tPLH

2.0

4.5

6.0

tZL

2.0

4.5

6.0

tZH

2.0

4.5

6.0

tLZ

2.0

4.5

6.0

tHZ

2.0

4.5

6.0

tTLH

2.0

tTHL

4.5

6.0

Cin

—

Ta = 25°C

Min Typ Max

— — 90

— 12 18

— — 15

— — 90

— 12 18

— — 15

— — 230

— 15 46

— — 39

— — 230

— 15 46

— — 39

— — 215

— 17 43

— — 37

— — 215

— 17 43

— — 37

— — 60

— 4 12

— — 10

— 5 10

Ta = –40 to +85°C

Min

Max Unit

—

115 ns

—

23

—

20

—

115 ns

—

23

—

20

—

290 ns

—

58

—

49

—

290 ns

—

58

—

49

—

270 ns

—

54

—

46

—

270 ns

—

54

—

46

—

75

ns

—

15

—

13

—

10

pF

Test Circuit

HD74HC640

VCC

VCC

Test Conditions

G

Input

Pulse Generator

Zout = 50 Ω

Input

Pulse Generator

Zout = 50 Ω

DIR

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 5 of 10

Share Link: