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