Operating voltage: 4V~18V standby current power high noise immunity CM

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Operating voltage: 4V~18V standby current power high noise immunity CM

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HT6026 Remote Control Encoder
Operating voltage: 4V~18V standby current power high noise immunity CMOS technology different codes
Minimum transmission words Built-in oscillator needs only resistor Interface with infrared transmission medium Minimal external components
Applications
Burglar alarm system Smoke fire alarm system Garage door controllers alarm system
Security system Cordless telephones Other remote control systems
General Description
HT6026 CMOS encoder designed remote control system applications. capable encoding bits information which consists address bits data bits. Each address/data input externally trinary programmable external switches. programmable address/data transmitted along with header bits infrared transmission medium upon receipt trigger signal (TE). HT6026 compatible with MC145026.
Assignment
Block Diagram
illa
October 1997
HT6026
Coordinates
Unit:
-598.00 -674.00 -674.00
689.00 433.00 126.00
160.00 670.00 670.00 670.00 670.50 270.00 -84.00 -299.00
-687.00 -687.00 -347.00 172.00 689.50 689.00 689.00 689.00
-674.00 -162.00 -674.00 -449.00 -598.00 -687.00 -342.00 -687.00 -127.00 -687.00
Chip size: 1650 1680 (mm)
substrate should connected layout artwork.
Description
9~10 Name AD0~AD6 AD7~AD8 OSC1 OSC2 OSC3 DOUT Internal Connection TRANSMISSION GATE TRANSMISSION GATE OSCILLATOR OSCILLATOR OSCILLATOR CMOS Pull-high CMOS Description Input pins address/data AD0~AD6 setting. They externally VDD, VSS, left open. Negative power supply (GND) Input pins address/data AD7~AD8 setting. They externally VDD, VSS, left open. Oscillator input Oscillator output Oscillator output Transmission enable, active Encoder data serial transmission output Positive power supply
October 1997
HT6026
Approximate internal connection circuits
Absolute Maximum Ratings
Supply Voltage.-0.3V Input Voltage.VSS-0.3 VDD+0.3V Storage Temperature.-50°C 125°C Operating Temperature .-20°C 75°C
Note: These stress ratings only. Stresses exceeding range specified under Maximum cause substantial damage device. Functional operation this device other conditions beyond those listed specification implied prolonged exposure extreme conditions affect device reliability.
Electrical Characteristics
Symbol ISTB Parameter Operating Voltage Standby Current Operating Current Test Conditions IDOUT Output Drive Current fOSC Input Voltage Input Voltage Pull-high Resistance VTE=0V Conditions Oscillator stops load, fOSC=18kHz Min. -1.0 -8.0 0.7VDD Typ. 2000 -1.7 -14.0 10.0 Max. 3000
Ta=25°C Unit
load, fOSC=22kHz VOH=0.9VDD (Source) VOL=0.1VDD (Sink)
0.3VDD
Oscillator Frequency
REXT=10kW CEXT=2000PF RS=20kW
October 1997
HT6026
Functional Description
Operation HT6026 encoder begins one-word transmission cycle upon receipt transmission enable (TE, active low). This cycle will repeat itself long transmission enable held low. Once transmission enable returns high, encoder output completes final word cycle, then stops shown Transmission timing diagram below. total number transmission cycles allowed always automatically adjusted even number.
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Transmission timing Information word information word consists periods shown:
Information Composition Address/data waveform Each programmable address/data externally following three logic states:
Address/Data waveform
October 1997
HT6026
Address/data programming (preset) status each address/data individually preset logic transmission enable signal applied, encoder scans transmits status 9-bit address/data serially order AD8. trigger signal applied, chip only consumes standby current which less than (for VDD=5V). address pins usually preset transmit data codes with their particular security codes switches wiring, while data selected using push buttons electronic switches. following figure demonstrates application using HT6026:
transmitted information listed: Pilot Sync. floating
October 1997
HT6026
Transmission enable Transmission enabled applying signal pin. HT6026 enabled outputs address/data codes from DOUT when more than 65ns. Flowchart
till
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Oscillator frequency supply voltage
October 1997
HT6026
Application Circuit
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Notes:
Typical infrared diode: EL-1L2 (KODENSHI CORP.) Typical transmitter: JR-220 (JUWA CORP.)
October 1997
HT6026
Holtek Semiconductor Inc. (Headquarters) No.3 Creation Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 11F, No.576, Sec.7 Chung Hsiao Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower Cheung Plaza, Cheung Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Holtek Semiconductor (Shanghai) Ltd. Floor, Building No.889, Shan Road, Shanghai, China Tel:021-6485-5560 Fax:021-6485-0313 Holmate Technology Corp. 48531 Warm Springs Boulevard, Suite 413, Fremont, 94539 Tel: 510-252-9880 Fax: 510-252-9885 Copyright 1999 HOLTEK SEMICONDUCTOR INC. information appearing this Data Sheet believed accurate time publication. However, Holtek assumes responsibility arising from specifications described. applications mentioned herein used solely purpose illustration Holtek makes warranty representation that such applications will suitable without further modification, recommends products application that present risk human life malfunction otherwise. Holtek reserves right alter products without prior notification. most up-to-date information, please visit site http://www.holtek.com.tw.
October 1997

Operating voltage: 4V~18V standby current power high noise immunity CM

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