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312 RF DECODER SAMHOP Microelectronics Corp. 三合微科股份有限公司 Page

9 OCT. 26,

2001 Single Resistor Oscillator SM5272B's oscillator be constructed by connecting a resistor between OSC1 and OSC2 pin. SM5272B's OSC frequency must be 1.4 to 6.8 times more than SM5262B. Encoder OSC Frequency SM5272B

312 RF DECODER SAMHOP Microelectronics Corp. 三合微科股份有限公司 Decoder OSC Frequency Suggested oscillator resistor of SM5262B/ SM5272B: SM5262B SM5272B 4.7M OHM 750K OHM 3.0M OHM 390K OHM 2.2M OHM 270K OHM 1.2M OHM 160K OHM R = 510K R = 1.2 M R = 2.7 M R = 3.0 M R = 3.3 M R = 4.3 M

100 KHz

0 6

9 12

15 VOLTAGE

90 80

70 60

50 40

30 20

10 2.5 VOLTAGE R =

100 K R =

300 K R =

620 K R =

680 K R =

820 K R = 1.0 M

300 0

6 9

200 100

50 250 2.5

180 KHz Page

10 DC ELECTRICAL CHARACTERISTICS OCT. 26,

2001 Conditions Unit Limit Symbol Min. Typ. Max. V VCC 2.5

9 Vcc =

12 V OSC stop A0 ~ A11 open μA ISTB 0.02 0.3 IOH IOL Parameter Supply Voltage Standby Current Data Output Driving Current Data Output Sinking Current SM5272B

312 RF DECODER SAMHOP Microelectronics Corp. 三合微科股份有限公司 Vcc = 5V VOH = 1V mA

8 Vcc = 9V VOH = 1.8V mA

20 Vcc = 5V VOH = 4V mA -3.5 Vcc = 9V VOH = 7.2V mA -7.1 Vss A0 A1 A2 A3 A4 A5 A6 A7 VDD VT OSC1 OSC2 DIN A11 A10 A9 A8 RF Receiver SM5272B VT ROSC APPLICATION CIRCUIT Page

11 OCT. 26,

2001 SM5272B

312 RF DECODER SAMHOP Microelectronics Corp. 三合微科股份有限公司 Page

12 ORDERING INFORMATION Part No. Package SM5272B

18 Pin DIP Part No. Package SM5272BS

20 Pin SOP OCT. 26,

2001 SM5272B S - X X Logo Empty: DIP TYPE S: SO Package M:Momentary type L: Latch type None:

0 Data Bits 2:Two Data Bits 3:Three Data Bits 4:Four Data Bits 5:Five Data Bits 6:Six Data Bits Product No. SM5272B

312 RF DECODER SAMHOP Microelectronics Corp. 三合微科股份有限公司 Date Code Serial Number ESD Protection Mark xxx xx