HD74LS155 datasheet(3/7 Pages) RENESAS

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HD74LS155

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

Block Diagram

Outputs

Strobe

Data

Select

Data

Strobe

1Y0

1Y1

1Y2

1Y3

2Y0

2Y1

2Y2

2Y3

Absolute Maximum Ratings

Item

Symbol

Ratings

Unit

Supply voltage

VCC

Input voltage

VIN

Power dissipation

400

Storage temperature

Tstg

–65 to +150

°C

Note:

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

Recommended Operating Conditions

Item

Symbol

Min

Typ

Max

Unit

Supply voltage

VCC

4.75

5.00

5.25

IOH

—

–400

µA

Output current

IOL

—

Operating temperature

Topr

–20

°C

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol

min.

typ.*

max.

Unit

Condition

VIH

2.0

—

Input voltage

VIL

—

0.8

VOH

2.7

—

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

IOH = –400

µA

—

0.4

IOL = 4 mA

Output voltage

VOL

—

0.5

IOL = 8 mA

VCC = 4.75 V, VIH = 2 V,

VIL = 0.8 V

IIH

—

µA

VCC = 5.25 V, VI = 2.7 V

IIL

—

–0.4

VCC = 5.25 V, VI = 0.4 V

Input current

—

0.1

VCC = 5.25 V, VI = 7 V

Short-circuit output

current

IOS

–5

—

–42

VCC = 5.25 V

Supply current**

ICC

—

6.1

VCC = 5.25 V

Input clamp voltage

VIK

—

–1.5

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.

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