ht658 Linx Technologies, Inc., ht658 Datasheet
ht658
Manufacturer Part Number
ht658
Description
Holtek Ht658/s Data Sheet
Manufacturer
Linx Technologies, Inc.
Datasheet
1.HT658.pdf
(6 pages)
• Operating voltage: 2.4V~12V
• Low power and high noise immunity CMOS
• 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
• Minimal external components
• 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
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.
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.
F F E E A A T T U U R R E E S S
A A P P P P L L I I C C A A T T I I O O N N S S
G G E E N N E E R R A A L L D D E E S S C C R R I I P P T T I I O O N N
N N o o t t e e : :
technology
transmission medium
WIRELESS MADE SIMPLE
Holtek HT658/S
Data Sheet
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ht658 Summary of contents
Page 1
... The HT658/S decoder is a CMOS LSI for remote control system applications paired with the HT640/S encoder. The HT658 decoder receives serial address and data from the encoder that are transmitted by a carrier using transmission medium ...
Page 2
... Holtek HT658/S Data Sheet Pin Name I/O A0-A17 I D10-D17 O DIN OSC1 I OSC2 O VSS I VDD ...
Page 3
... Holtek HT658/S Data Sheet Supply Voltage .............. –0.3V to 13V Input Voltage..................VSS–0.3V to VDD+0.3V *Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...
Page 4
... Holtek HT658/S Data Sheet The HT658 decoder provides ten address and 8 data pins pin SOP package paired with the HT640 encoder. The decoders receive ...
Page 5
... Holtek HT658/S Data Sheet Encoder Transmit Enable < 1 Word Encoder Data Out 3 Words 2 Words Decoder VT Check Decoder Data Out SYNC BITS A& ...
Page 6
... Holtek HT658/S Data Sheet ...