HD74LS280 Просмотр технического описания (PDF) - Renesas Electronics

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HD74LS280

9-bit Odd / Even Parity Generator / Checker

Renesas Electronics 

HD74LS280

Electrical Characteristics

Item

Input voltage

Symbol

VIH

VIL

min.

2.0

—

typ.*

—

—

max.

—

0.8

Unit

V

V

VOH

2.7

—

—

V

Output voltage

—

—

0.4

VOL

V

—

—

0.5

IIH

—

—

20

µA

Input current

IIL

—

—

–0.4

mA

II

—

—

0.1

mA

Short-circuit output current

IOS

–20

—

–100 mA

Supply current**

ICC

—

16

27

mA

Input clamp voltage

VIK

—

—

–1.5

V

Notes: * VCC = 5 V, Ta = 25°C

** ICC is measured with all outputs open and all inputs grounded.

(Ta = –20 to +75 °C)

Condition

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

IOH = –400 µA

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

IOL = 8 mA VIL = 0.8 V

VCC = 5.25 V, VI = 2.7 V

VCC = 5.25 V, VI = 0.4 V

VCC = 5.25 V, VI = 7 V

VCC = 5.25 V

VCC = 5.25 V

VCC = 4.75 V, IIN = –18 mA

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Item

Symbol Outputs min.

typ.

max.

Unit

Condition

Propagation delay time

tPLH

—

Σ Even

33

50

ns

tPHL

tPLH

—

—

Σ Odd

29

23

45

45

ns

ns

CL = 15 pF, RL = 2 kΩ

tPHL

—

31

50

ns

Rev.3.00, Jul.15.2005, page 3 of 5

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