HT658-S Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – CMOS LSI for remote control system applications

Holtek HT658/S Data Sheet
WIRELESS MADE SIMPLE
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 HT640 encoder
• 10 address pins
• 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
GENERAL DESCRIPTION
The HT658/S decoder is a CMOS LSI for remote control system applications. It is paired with the
HT640/S encoder. The HT658 decoder receives serial address and data from the encoder 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 decoder is capable of decoding 18 bits of information that consists
of 10 bits of address and 8 bits of data.
Note:
This product is manufactured and supported by Holtek Semiconductor. This data sheet is provided as a courtesy to Linx customers
and is believed to be accurate at the time of publication, however these specifications may change at any time without notice. Linx
Technologies makes no representation as to the accuracy or suitability of this information for any purpose. For more information
please contact Holtek at www.holtek.com.