UPC1361C ETC1 | Alldatasheet
Document overview
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Technical content
a = ELECTRONIC CHANNEL SELECTOR |
DESCRIPTION
The uPC1361C is an electronic channel selector integrated circuit with 4 bit output. It is capable of selecting up to 12 | channels, The output terminals are design to permit the direct driving of LED or neon lamps. This IC consists of Clock Oscillator circuit, Channel Up and Down circuit, Channel skip circuit, 4 bit Up and Down ~ Counter circuit, 1-12 Decoder circuit, 4 bit Output Buffer circuit and 12 channel Output Buffer circuit, all of which are | contained in a 24 pins dual in-line package. FEATURES PACKAGE DIMENSIONS in millimeters (inches) | © 4 bit output gt . . RBBAR BEE EBD © LED, Neon lamps direct drive. HARASS HAB ASS | 1x=5 mA, Vega 150 mV MAX. fronssy . © Low power consumption. P se | Veo=12 V, Iec=9 mA TYP. SEUATEEA"A°R“R™A"EA™E") ae ean ip; © Up to 12 channel selection. 3 il ti © Internal schmitt trigger circuit. (CHU, CHD INPUT) PROHOTOTDNRTRTRTRTRATIT gi 88 — | © Power ON initial channel set. Fest ? N\\ 2aszeae - t |__e Yeon © TV, Radio etc. channel selection use. Tsk ha i ee Go “aan 0 eae | BLOCK DIAGRAM . : 24 PINS DIP | ‘ Ss or wort %» > DD Wome K11_K12 | OOOO OOooor? oe
7 MEMORY
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| ABSOLUTE MAXIMUM RATINGS (Ta=26 °C) Supply Voltage Veco 15.0 v | Input Current to Channel Selection Circuit lki~tt, 24 —5 to 30 mA ‘ Input Current to Control Circuit Ino~ as —5 to 10 mA Input Current to Control Circuit los, 19 —5 to 10 mA \\ Input Current to Control Circuit lo13 —5 to 30 mA * Output Voltage to Channel Selection Circuit Vk1~11, 20 —0.5 to 45 v i * Output Voltage to Control Circuit V13, Vao~a3 —0.5 to 14.4 v q * Input Voltage to Contro! Circuit Vis, 16, 17 -0.5 to Voc t0.5 V . Power Dissipation Py 300 mw ; Operating Temperature Range Topt —20 to +75 °c Storage Temperature Range Tsta —40 to +125 °c *AtVoc=12V j RECOMMENDED OPERATING CONDITIONS Se \\ [cick ontiationFeqvensy | tose | | 20 | 90 | wwe] } ELECTRICAL CHARACTERISTICS (Ta=25 +3 °C) | channal Seocuon Swraon Valase | Vow) |_| | 180 | mW | Veor@SVilous8mA | Channel Selection Leakage Current [tom || | 10 | #A [Veo=1@4vivon=ssv | [ a [Acres Output Leakage Curent | tomta | |_| 10 | wA | Voc 144 v,Vourteav | | AFT bsfest Output Vorews | Vou] |_| 6 | V_| Vec*@8V.toust2ma_ | } ST | enn input Low Fiveshold Varoge | -Vrerom | 8® || 80 |v [Vecrt@v | | anne input Leskage Covent | tonic | -8 | | | #A | Vocraavivurow | crone! put Lata Corent [tonto |_| 1 8 | wa | voowt4avivineteav | a a OO 7 | Key Input eakae Guvent | twexn [10 | | | A | Veoriaavivurov | | Sip input Gorene te 80 | | A | Veco | [chametvodvorne | wow | es | | | [0s Freaueney TL tose [10 | 20 | 30 [re | Voont2 v, Roa ia, 070.008 oF | fj 35S ;
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| CONNECTION DIAGRAM (Top View) CHANNEL secection 11 k11) LL [24] (x12) CHANNEL SELECTION 12 | CHANNEL SELECTION 10 (k10) L2] [23] (a3) ADDRESS OUTPUT A3 : CHANNEL SELECTION 9(k 9) [3] [22] (a2) ADDRESS OUTPUT A2 |, CHANNEL SELECTION 8(k 8) [4] [21] (a1) ADDRESS OUTPUT At CHANNEL seLecTION 7(k 7) [5 | [20] (Ao) ADDRESS OUTPUT AO | CHANNEL SELECTION 6 (K 6) [6 | [19] (SKP) SKIP INPUT | CHANNEL SELECTION 5 (K 5) [18] (KIN) KEY SENSE INPUT : CHANNEL SELECTION 4 (kK 4) [8 ] (OSC) OSC FILTER { CHANNEL SELECTION 3 (K 3) [3 | [Te] (CHU) CHANNEL UP INPUT . CHANNEL SELECTION 2(K 2) [70 | (CHD) CHANNEL DOWN INPUT CHANNEL SELECTION 1(K 1) [a1] [74] (Voc) 42V GROUND (GND) [ig] (DEF) AFT OEFEAT OUTPUT | PIN FUNCTION K1~12 (| #11~1,#24 ) CHANNEL SELECTION OUTPUT ] These are the output terminals constructed of collector-opened transistors, so they can drive potentiometers - and indicators, and key output. They have saturation voltage of 150 mV at 1k=5 mA, so they can drive neon or LED lamps directly. ] GND ( #12 ) GROUND DEF ( #13 ) AFT DEFEAT OUTPUT This terminal is made of open collector transistor output through a resistor of 330 2. It is used for AFT } ° CHD ( #15 ) CHANNEL DOWN INPUT Usually pulled up to Vcc through a resistor, Channel selector changes at positive going edge of input signal - of this terminal and the channel selector works orderly from K12 to K1. : CHU ( #16 ) CHANNEL UP INPUT Usually pull up to Vcc through a resistor, Channel selector changes at positive going edge of input signal of this terminal and the channel selector works orderly from K1 to K12. If CHU and CHD terminals put down to ground at same time, initial channel is selected. So, it is very useful to remote control operation use. . These terminals include schmitt trigger circuit. If these terminals are not used as remote control operation, connect these terminals to Vcc directry. osc ( #17 ) OSC FILTER ° When a Channel key is pushed or skip function is operated, oscillator contained in this IC oscillate with €, R connected to this terminal. Typical oscillation frequency is 2 kHz. (R=33 kS&, C=0.033 uF) } KIN ( #18 ) KEY INPUT When channel selection key is pushed, as pushed channel is not selected, “High” level of signal is applied to this terminal through a potentiometer resistor. Then channel selector scans terminals of K1 ~ K12. And | when sense up this terminal, it pull down the voltage of this terminal and stop the scanning. | 3°7
SKP ( #19 ) SKIP INPUT | Usually pull up to Vcc through resistor. When only 10 channels are used, connect open channel outputs (K11, K12) to this terminal with CR filter. : AO~AZ ( #20~23 ) ADDRESS OUTPUT AO ~A3 : These are internal 4 bit counter output terminals constructed of collector-opened transistors, These output can be used as 7 segment LED display or possition output for MPU reading. | Selectchannel Address output a K1 AOL AL A2.L AS. | K2 H L L L K3 L H L L K4 H H L L | K5 L L H Lt K6 H L H L | K7 Lt H H L K8 H H H L Ko L L L H | K10 H L Lt H K11 L H L H K12 H H L H | * L..GND | H...OPEN APPLICATION CIRCUIT
12 Position Displey/4 bit Encoder Output |
+12 Yoo 33k 0.01 uF | ged TTT TL SKP CHU OSC Ki Veo CHD oot Ki : us AO H k3 i H ! AL Abit ! H Binary H ' A2 Output | ‘ 1 ! H A3 Veo H i i DEF | fu ¥y |} oot Ki12 KIN _GNO l 27k : = ro aE | 388 . —$ $
| APPLICATION CIRCUIT - Example of TV channel selection circuit with 7 segment LED display } ee a eR ee ee es ee ee ee 32¥ 33k eisv oe PRTG rr ! ae () uPC574J CRTC TST Tay Ta TTS ase
18854 TUNING VOLTAGE OUTPUT
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