HD74LS645FPEL 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

比赛名单

HD74LS645FPEL

Octal Bus Transceivers (non-inverted 3-state outputs)

Renesas Electronics 

HD74LS645

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol min. typ.* max. Unit

Condition

Input voltage

Hysteresis

VIH

2.0

—

—

V

VIL

—

—

0.8

VT+ – VT–

0.2

—

—

V

VCC = 4.75 V

Output voltage

VOH

2.4

—

2

—

—

—

V

IOH = –3 mA

IOH = –15 mA

VCC = 4.75 V,

VIH = 2 V, VIL = 0.8 V

VOL

—

—

0.4

V

IOL = 12 mA

VCC = 4.75 V,

—

—

0.5

IOL = 24 mA

VIH = 2 V, VIL = 0.8 V

Output current

IOZH

IOZL

—

—

—

—

20

–400

µA

VO = 2.7 V

VO = 0.4 V

VCC = 5.25 V,

G input = 2 V

IIH

—

—

20

µA VCC = 5.25 V, VI = 2.7 V

Input

IIL

—

—

–400

µA VCC = 5.25 V, VI = 0.4 V

current

A or B

DIR or G

II

—

—

—

—

0.1

mA VI = 5.5 V

0.1

VI = 7 V

VCC = 5.25 V

Short-circuit output current

IOS***

–40

—

–225

mA VCC = 5.25 V

ICCH

—

48

70

Supply current**

ICCL

—

62

90

mA VCC = 5.25 V, Output open

ICCZ

—

64

95

Input clamp voltage

VIK

—

—

–1.5

V

VCC = 4.75 V, IIN = –18 mA

Notes: * VCC = 5 V, Ta = 25°C

** ICC is measured with all outputs open.

*** Not more than one output shall be shorted at a time. the duration of the short circuit shall not exceed one

second.

Switching Characteristics

Item

Propagation delay time

Output enable time

Output disable time

(VCC = 5 V, Ta = 25°C)

Symbol Inputs Outputs min. typ. max. Unit Condition

A

tPLH

B

B

—

8

15

ns

A

—

8

15

ns

A

tPHL

B

G

tZL

G

B

—

11

15

ns

A

—

11

15

ns CL = 45 pF,

A

—

31

40

ns

RL = 667 Ω

B

—

31

40

ns

G

A

—

26

40

ns

tZH

G

B

—

26

40

ns

G

A

—

15

25

ns

tLZ

G

B

—

15

25

ns

CL = 5 pF,

G

A

—

15

25

ns

RL = 667 Ω

tHZ

G

B

—

15

25

ns

Rev.2.00, Feb.18.2005, page 3 of 6

Share Link: