 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| 312 Series of Decoders Features * * * * * * * * Operating voltage: 2.4V~12V Low power and high noise immunity CMOS technology Low standby current Capable of decoding 12 bits of information Pair with Holteks 312 series of encoders 8~12 address pins 0~4 data pins Trinary address setting * * * * * * Received data are checked two times Built-in oscillator needs only 5% resistor VT goes high during a valid transmission Easy interface with an RF or an infrared transmission medium Minimal external components Package information: refer to Selection Table 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 312 decoders are a series of CMOS LSIs for remote control system applications. They are paired with 312 series of encoders. For proper operation a pair of encoder/decoder with the same number of address and data format should be selected (refer to the encoder/decoder cross reference tables). The 312 series of decoders receive serial address and data from its corredponding series of encoders that are transmitted by a carrier using an RF or an IR transmission medium. Then it compares the serial input information twice continuously with its local address. If no errors or unmatched codes are encountered, the input data codes are decoded and transferred to the output pins. The VT pin also goes high to indicate a valid transmission. The 312 series of decoders are capable of decoding 12 bits of information that consists of N bits of address and 12-N bits of data. To meet various applications they are arranged to provide a number of data pins ranging from 0 to 4 and an address pin ranging from 8 to 12. Thus, various combinations of address/data number are available in different packages. 1 December 13, 1999 312 Series of Decoders Selection Table Function Address No. Part No. HT6030 HT6032 HT6034 12 10 8 Data No. 0 2 4 Type 3/4 L L VT O O O Oscillator Trigger Package RC oscillator DIN active Hi 18 DIP/20 SOP RC oscillator DIN active Hi 18 DIP/20 SOP RC oscillator DIN active Hi 18 DIP/20 SOP Note: Data type: L stands for latch type data output. VT can be used as a momentary data output. Block Diagram OSC1 OSC2 D IN O s c illa to r D iv id e r D a ta S h ift R e g is te r L a tc h C ir c u it D a ta B u ffe r D a ta D e te c to r S y n c . D e te c to r C o m p a ra to r C o m p a ra to r C o n tr o l L o g ic T r a n s m is s io n G a te C ir c u it B u ffe r VT A d d re s s VDD VSS Note: The address/data pins are available in various combinations (refer to the address/data table). 2 December 13, 1999 312 Series of Decoders Pin Assignment 1 2 -A d d re s s 0 -D a ta A0 A1 A2 A3 A4 A5 A6 A7 VSS 9 8 7 6 5 4 3 2 1 18 17 16 15 14 13 12 11 10 VDD VT OSC2 OSC1 D IN A11 A10 A9 A8 1 2 -A d d re s s 0 -D a ta NC 1 2 3 4 5 6 7 8 9 10 A0 A1 A2 A3 A4 A5 A6 A7 VSS 20 19 18 17 16 15 14 13 12 11 NC VDD VT OSC2 OSC1 D IN A11 A10 A9 A8 1 0 -A d d re s s 2 -D a ta A0 1 2 3 4 5 6 7 8 9 A1 A2 A3 A4 A5 A6 A7 VSS 18 17 16 15 14 13 12 11 10 VDD VT OSC2 OSC1 D IN D11 D10 A9 A8 HT6030 1 8 D IP 1 0 -A d d re s s 2 -D a ta NC 1 2 3 4 5 6 7 8 9 10 A0 A1 A2 A3 A4 A5 A6 A7 VSS 20 19 18 17 16 15 14 13 12 11 NC VDD VT OSC2 OSC1 D IN D11 D10 A9 A8 A0 A1 A2 A3 A4 A5 A6 A7 VSS 9 8 7 6 5 4 3 2 1 H T6030 20 SO P 8 -A d d re s s 4 -D a ta 18 17 16 15 14 13 12 11 10 VDD VT OSC2 OSC1 D IN D11 D10 D9 D8 HT6032 1 8 D IP 8 -A d d re s s 4 -D a ta NC 1 2 3 4 5 6 7 8 9 10 A0 A1 A2 A3 A4 A5 A6 A7 VSS 20 19 18 17 16 15 14 13 12 11 NC VDD VT OSC2 OSC1 D IN D11 D10 D9 D8 H T6032 20 SO P HT6034 1 8 D IP H T6034 20 SO P 3 December 13, 1999 312 Series of Decoders Pin Description Pin Name A0~A11 D8~D11 DIN VT OSC1 OSC2 VSS VDD I/O I O I O I O 3/4 3/4 Internal Connection Description TRANSMISSION Input pins for address A0~A11 setting GATE They can be externally set to VDD, VSS, or left open. CMOS OUT CMOS IN CMOS OUT OSCILLATOR OSCILLATOR 3/4 3/4 Output data pins Serial data input pin Valid transmission, active high Oscillator input pin Oscillator output pin Negative power supply, ground Positive power supply Approximate internal connections T R A N S M IS S IO N GATE CMOS OUT C M O S IN O S C IL L A T O R EN OSC1 OSC2 Absolute Maximum Ratings Supply Voltage...............................-0.3V to 13V Input Voltage....................VSS-0.3 to VDD+0.3V Storage Temperature.................-50C to 125C Operating Temperature ..............-20C to 75C Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. 4 December 13, 1999 312 Series of Decoders Electrical Characteristics Symbol VDD ISTB IDD Parameter Operating Voltage Standby Current Operating Current Data Output Source Current (D8~D11) Data Output Sink Current (D8~D11) VT Output Source Current VT Output Source Current Only For HT6033/35/45 VT Output Sink Current VT Output Sink Current Only For HT6033/35/45 VIH VIL fOSC H Input Voltage L Input Voltage Oscillator Frequency 5V 5V 5V VOH=4.5V 5V VOL=0.5V 3/4 3/4 ROSC=91kW Test Conditions VDD 3/4 5V 12V 5V 5V 5V Conditions 3/4 Oscillator stops No load fOSC=100kHz VOH=4.5V VOL=0.5V Min. 2.4 3/4 3/4 3/4 -0.5 0.5 -2 -0.35 1 0.35 3.5 0 3/4 Typ. 5 0.1 2 250 -1 1 -4 -0.6 2 0.6 3/4 3/4 100 Max. 12 1 4 500 3/4 3/4 3/4 3/4 3/4 3/4 5 1 3/4 V V kHz mA Ta=25C Unit V mA mA mA mA mA IO IVT 5 December 13, 1999 312 Series of Decoders Functional Description Operation The 3 series of decoders provide various combinations of address and data pins in different packages. They are paired with 312series of encoders. The decoders receive data transmitted by the encoders and interpret the first N bits of the code period as addresses and the last 12-N bits as data (where N is the address code number). A signal on the DIN pin then activates the oscillator which in turn decodes the incoming address and data. The decoders check the received address twice continuously. If all the received address codes match the contents of the decoders local address, the 12-N bits of data are decoded to activate the output pins and the VT pin is set high indicating a valid transmission. That will last until the address code is incorrect or no signal is received. The output of the VT pin is high only when the transmission is valid. Otherwise it is always low. Output type The data outputs follow the encoders during a valid transmission and are then latched in this state until the next valid transmission occurs. No 12 Flowchart Pow eron S ta n d b y m o d e D is a b le V T & ig n o r e th e r e s t o f th is w o r d No A re C o d e in ? Yes A d d r e s s b its m a tc h e d ? Yes S to re d a ta No M a tc h p r e v io u s ly s to r e d d a ta ? Yes 2 tim e s o f c h e c k in g c o m p le te d ? Yes L a tc h /M o m e n ta ry d a ta to o u tp u t & a c tiv a te V T No No A d d re s s o r d a ta e rro r ? Yes The oscillator is disabled in the standby state and activated as long as a logic high signal is applied to the DIN pin. i.e., the DIN pin should be kept low if there is no signal input. 6 December 13, 1999 312 Series of Decoders Decoder timing E ncoder T r a n s m is s io n E n a b le E ncoder D a ta O u t 3 w o rd s D ecoderV T 2 w o rd s check M o m e n ta ry D a ta O u t 2 14 < 1 w o rd T r a n s m itte d C o n tin u o u s ly 3 w o rd s check c lo c k s 2 14 c lo c k s 1 /2 c lo c k p e r io d L a tc h e d D a ta O u t 1 /2 c lo c k p e r io d Encoder/Decoder cross reference tables Package Part No. HT6030 HT6032 HT6034 Data Pins 0 2 4 Address Pins 12 10 8 VT O O O Pair Encoder HT6010 HT6010 HT6012 HT6010 HT6014 Encoder DIP 18, 20 18, 20 18 18, 20 18 SOP 20 20 20 20 20 Decoder DIP 18 18 18 18 SOP 20 20 20 20 Address/Data sequence The following table describes the position of the address/data sequence for various models of the 312 series of decoders. Address/Data Bits 0 A0 A0 A0 1 A1 A1 A1 2 A2 A2 A2 3 A3 A3 A3 4 A4 A4 A4 5 A5 A5 A5 6 A6 A6 A6 7 A7 A7 A7 8 A8 A8 D8 9 A9 A9 D9 10 A10 D10 D10 11 A11 D11 D11 Part No. HT6030 HT6032 HT6034 7 December 13, 1999 312 Series of Decoders Oscillator frequency vs supply voltage fO S C (S c a le ) 2 .0 0 R OSC (9 ) 1 .7 5 62k 1 .5 0 1 .2 5 91k (1 0 0 k H z ) 1 .0 0 0 .7 5 180k 0 .5 270k 0 .2 5 390k 560k 820k 2M 2 .4 3 4 5 6 7 8 9 10 11 12 13 V DD (V D C ) The recommended oscillator frequency is fOSCD (decoder) @ 33 fOSCE (encoder) 8 December 13, 1999 312 Series of Decoders Application Circuits R e c e iv e r C ir c u it V 1 2 3 4 5 6 7 8 9 A0 A1 A2 A3 A4 A5 A6 A7 VSS VDD VT OSC2 OSC1 D IN A11 A10 A9 A8 18 17 16 15 14 13 12 11 10 9 8 7 6 R OSC DD R e c e iv e r C ir c u it V 1 2 3 4 5 A0 A1 A2 A3 A4 A5 A6 A7 VSS VDD VT OSC2 OSC1 D IN D11 D10 18 17 16 15 14 13 12 R OSC DD D9 11 D8 10 HT6030 HT6034 9 December 13, 1999 312 Series of Decoders Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Sales Office) 11F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Shanghai) Inc. 7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor (Hong Kong) Ltd. Block A, 3/F, Tin On Industrial Building, 777-779 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Holmate Semiconductor, Inc. 46712 Fremont Blvd., Fremont, CA94538 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com Copyright O 1999 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holteks products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. 10 December 13, 1999 |
Price & Availability of 312DECODERS
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |