L6221A L6221AD

L6221N

July 1998

QUAD DARLINGTON SWITCH

®

.

FOUR NON INVERTING INPUTS WITH

ENABLE

.

OUTPUT VOLTAGE UP TO 50 V

.

OUTPUT CURRENT UP TO 1.8 A

.

VERY LOW SATURATION VOLTAGE

.

TTL COMPATIBLE INPUTS

.

INTEGRAL FAST RECIRCULATION DIODES

DESCRIPTION

The L6221 monolithic quad darlington switch is de-

signed for high current, high voltage switching appli-

cations. Each of the four switches is controlled by a

logic input and all four are controlled by a common

enableinput.All inputsareTTL-compatiblefor direct

connection to logic circuits.

Eachswitch consists of an open-collectordarlington

transistor plus a fast diodefor switchingapplications

with inductive device loads. The emitters of the four

switches are commoned. Any number of inputsand

outputs of the same device may be paralleled.

Multiwatt 15

Powerdip 12 + 2 + 2

SO16+2+2

ORDERING NUMBERS:

L6221A (Powerdip)

L6221N (Multiwatt15)

L6221AD (SO16+2+2)

BLOCK DIAGRAM

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