HD74LS191 데이터 시트보기 (PDF) - Renesas Electronics

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HD74LS191

Synchronous Up / Down 4-bit Binary Counter (single clock line)

Renesas Electronics 

HD74LS191

Recommended Operating Conditions

Item

Supply voltage

Output current

Operating temperature

Clock frequency

Clock pulse width

Load pulse width

Setup time

Hold time

Enable time

Symbol

VCC

IOH

IOL

Topr

ƒclock

tw (CK)

tw (Load)

tsu

th (data)

tenable

Min

4.75

—

—

–20

0

25

35

20

3

40

Typ

5.00

—

—

25

—

—

—

—

—

—

Max

5.25

–400

8

75

20

—

—

—

—

—

Unit

V

µA

mA

°C

MHz

ns

ns

ns

ns

ns

Electrical Characteristics

Item

Symbol

min.

typ.* max.

Unit

Input voltage

VIH

2.0

—

—

V

VIL

—

—

0.8

V

VOH

2.7

—

—

V

Output voltage

—

—

0.4

VOL

V

—

—

0.5

Enable

—

—

60

Others

IIH

µA

—

—

20

Input

Enable

—

—

–1.2

current Others

IIL

mA

—

—

–0.4

Enable

—

—

0.3

Others

II

mA

—

—

0.1

Short-circuit output

current

IOS

–20

—

–100

mA

Supply current**

ICC

—

20

35

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 µΑ

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

Rev.2.00, Feb.18.2005, page 4 of 10

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