HT604L

`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 Holteks 318 series of encoders
`9~10 address pins
`2~8 data pins
`Trinary address setting
`Two times of receiving check
`Built-in oscillator needs only a 5% resistor
`Valid transmission indicator
`Easy interface with an RF or an infrared transmission medium
`Minimal external components
`Package information: refer to Selection Table

The 3¹⁸ decoders HT604L 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).

The 3¹⁸ series of decoders HT604L receive serial address and data from that series of encoders that are transmitted by a carrier using an RF or an IR transmission medium. It then compares the serial input data twice continuously with its local address. If no errors or unmatched codes are encountered, the input data codes are decoded and then transferred to the output pins. The VT pin also goes high to indicate a valid transmission.

The 3¹⁸ decoders HT604L are capable of decoding 18 bits of information that consists of N bits of address and 18-N bits of data. To meet various applications they are arranged to provide a number of data pins whose range is from 0 to 8 and an address pin whose range is from 8 to 18. In addition, the 3¹⁸ decoders provide various combinations of address/data number in different packages.