74LS155 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

74LS155

Dual 2-line-to-4-line Decoders / Demultiplexers

Renesas Electronics 

HD74LS155

Block Diagram

Strobe

1G

Data

1C

Select

B

Select

A

Data

2C

Strobe

2G

1Y0

1Y1

1Y2

1Y3

Outputs

2Y0

2Y1

2Y2

2Y3

Absolute Maximum Ratings

Item

Symbol

Ratings

Unit

Supply voltage

VCC

7

V

Input voltage

VIN

7

V

Power dissipation

PT

400

mW

Storage temperature

Tstg

–65 to +150

°C

Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.

Recommended Operating Conditions

Item

Supply voltage

Output current

Operating temperature

Symbol

VCC

IOH

IOL

Topr

Min

4.75

—

—

–20

Typ

5.00

—

—

25

Max

5.25

–400

8

75

Unit

V

µA

mA

°C

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol

min.

typ.* max.

Unit

Condition

Input voltage

VIH

2.0

—

—

V

VIL

—

—

0.8

V

Output voltage

VOH

2.7

—

—

V

VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,

IOH = –400 µA

VOL

—

—

0.4

V

IOL = 4 mA VCC = 4.75 V, VIH = 2 V,

—

—

0.5

IOL = 8 mA VIL = 0.8 V

IIH

—

—

20

µA VCC = 5.25 V, VI = 2.7 V

Input current

IIL

—

—

–0.4

mA VCC = 5.25 V, VI = 0.4 V

II

—

—

0.1

mA VCC = 5.25 V, VI = 7 V

Short-circuit output

current

IOS

–5

—

–42

mA VCC = 5.25 V

Supply current**

ICC

—

6.1

10

mA VCC = 5.25 V

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 outputs open, A, B, and 1C inputs at 4.5 V, and 2C, 1G, and 2G inputs grounded.

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

Share Link: