LM1921 - 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 volts for a 500 mA load from a 5 0 volt supply The output can s.

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.