HD74LV221ATELL データシートの表示（PDF） - Renesas Electronics

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HD74LV221ATELL

Dual Monostable Multivibrators

Renesas Electronics 

HD74LV221A

Dual Monostable Multivibrators

REJ03D0326–0600Z

(Previous ADE-205-271D (Z))

Rev.6.00

Jun. 23, 2004

Description

The HD74LV221A features output pulse-duration control by three methods. In the first method, the A input is low and

the B input goes high. In the second method, the B input is high and the A input goes low. In the third method, the A

input is low, the B input is high, and the clear (CLR) input goes high.

The basic pulse duration is programmed by selecting external resistance and capacitance values. The external timing

capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between

Rext/Cext and VCC.

To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. Pulse duration

can be reduced by taking CLR low.

Features

• VCC = 2.0 V to 5.5 V operation

• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)

• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)

• Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V)

• Ordering Information

Part Name

Package Type

Package Code

Package

Abbreviation

HD74LV221AFPEL

SOP–16 pin (JEITA) FP–16DAV

FP

HD74LV221ARPEL

SOP–16 pin (JEDEC) FP–16DNV

RP

HD74LV221ATELL

TSSOP–16 pin

TTP–16DAV

T

Note: Please consult the sales office for the above package availability.

Taping Abbreviation

(Quantity)

EL (2,000 pcs/reel)

EL (2,500 pcs/reel)

ELL (2,000 pcs/reel)

Function Table

Inputs

CLR

A

B

L

X

X

X

H

X

X

X

L

H

L

↑

H

↓

H

↑

L

H

Note: H: High level

L: Low level

X: Immaterial

↑: Low to high transition

↓: High to low transition

: High level pulse

: Low level pulse

Outputs

Q

Q

L

H

L

H

L

H

Rev.6.00 Jun. 23, 2004 page 1 of 13

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