1/7

L9222

May 2004

1

FEATURES

■

OUTPUT VOLTAGE TO 50V

■

OUTPUT CURRENT TO 1.2A

■

VERY LOW SATURATION VOLTAGE

■

TTL COMPATIBLE INPUTS

■

INTEGRAL SUPPRESSION DIODE

2

DESCRIPTION

The L9222 monolithic quad transistor switch is de-

signed for high current, high voltage switching ap-

plications.

Each of the four switches is controlled by a logic

input and all four are controlled by a common en-

able input. All inputs are TTL-compatible for direct

connection to logic circuits. Each switch consists

of an open-collector transistor plus a clamp diode

for applications with inductive loads.

The emitters of the four switches are connected to-

gether to GND. The switches of the same device

may be paralled. The device is intended to drive

coils such as relays, solenoids, unipolar stepper

motors, LED etc.

QUAD INVERTING TRANSISTOR SWITCH

Figure 2. BLOCK DIAGRAM

REV. 3

Figure 1. Packages

Table 1. Order Codes

Part Number

Package

L9222

(PDIP12+2+2)

L9222 D

(SO20L)

Powerdip (12+2+2)

SO20L