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SC9148B датащи(PDF) 2 Page - List of Unclassifed Manufacturers |
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SC9148B датащи(HTML) 2 Page - List of Unclassifed Manufacturers |
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2 / 9 page ![]() Silan Semiconductors SC9148B HANGZHOU SILAN MICROELECTRONICS CO.,LTD Rev: 2.1 2002.09.10. 2 ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Value Unit Supply Voltage(Pin 16) VDD 6.0 V Input/Output Voltage VIN,VOUT Vss-0.3V ~ VDD+0.3V V Power Dissipation PD 200 mW Operating Temperature Tamb -20 ~ +75 °C Storage Temperature Tstg -55~+125 °C ELECTRICAL CHARACTERISTICS(Tamb=25°C VDD=3.0V,Unless otherwise specified) Parameter Symbol Test conditions Min Typ Max Unit Operating Supply Voltage VDD All function operation 2.2 5.0 V Operating supply current IDD Key ON, without load 1.0 mA Quiescent Current comsuption IDS All key OFF stop of OSC 1.0 µA “H” Level VIH 2.0 3.0 V K1~K6 CODE Input Voltage “L” Level VIL 00.5 V “H” Level IIH VIH=3.0V 203060 µA K1~K6 Input Current “L” Level IIL VIL=0V -1.0 1.0 µA “H” Level IIH VIH=3.0V -1.0 1.0 µA CODE TEST Input Current “L” Level IIL VIL=0V 203060 µA “H” Level IOH VOH=2.0V -500 µA T1~T3 Output Current “L” Level IOL VOL=3.0V 50 µA “H” Level IOH VOH=2.0V -0.1 mA Tx Output Current “L” Level IOL VOL=3.0V 1.0 mA OSC Feedback resistor Rf 500 k Ω Oscillation frequency fOSC 400 455 600 kHz PIN DESCRIPTION Pin No. Symbol Terminal Function/operation 1,16 GND,VDD Supply Voltage Terminal 2,3 XT, non-XT Termial for OSC Terminal for OSC, and used for connecting a 455kHz ceramic resonater etc. (with a built-in feedback resistor) 4~9 K1~K6 Key Input terminal Key input Terminal for key matrix. 18 keys can be connected at T1~T3 x K1~K6 (with a built-in pull-down resistor) 10~12 T1~T3 Timing Signal Output Terminal Digit timing output terminal for key matrix. 13 CODE Code bit input Terminal Terminal for matching code between transmitting and receiving 14 Non-TEST Test terminal Keep this terminal open 15 Tx Out Transmitting output terminal Transmitting signal output. Modulation is made by 12 bits 1 cycle and 38kHz carrier wave. |
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