General Description

The 3¹⁸ decoders are a series of CMOS LSIs for remote control system applications. They are

paired with the 3¹⁸ series of encoders. For proper operation a pair of encoder/decoder pair

with the same number of address and data format should be selected (refer to the encoder/decoder cross reference tables).

Features

• Operating voltage: 2.4V~12V

• Low power and high noise immunity CMOS technology

• Low standby current

• Capable of decoding 18 bits of information

• Pairs with HOLTEK’s 3¹⁸ series of encoders

• 8~18 address pins

• 0~8 data pins

• Trinary address setting

• Two times of receiving check

• Built-in oscillator needs only a 5% resistor

• Valid transmission indictor

• Easily interface with an RF or an infrared transmission medium

• Minimal external components



Applications

• Burglar alarm system

• Smoke and fire alarm system

• Garage door controllers

• Car door controllers

• Car alarm system

• Security system

• Cordless telephones

• Other remote control systems