LM1921 Datasheet (National Semiconductor)

LM1921, 1 Amp Industrial Switch

The LM1921 Relay Driver incorporates an integrated power PNP transistor as the main driving element The advantages of this over previous integrated circuits employing NPN power elements are several Greater output voltages are available off the same supply for driving grounded loads typically 4 5 vol

LM1921 Features

* such as short circuit protection and thermal shutdown are also provided The input voltage threshold levels are designed to be TTL CMOS and LSTTL compatible over the