Rato RT1249 Description : RT1249/RT11250 serials are infra-red(IR) remote control receiver utilizing CMOS technology, it can be used with RT1248. The RT1249 series are packaged in 16 pins(RT1249) and 24 pins(RT1250) DIP. This series are capable of controlling several functions, such as non-inverse/inverse select IR signal input format, and independent/dependent toggle signal output , etc. Features : Pin Out : Operating Voltage：2.2∼5.0V. Low power dissipation. High noise immunity. A oscillator can be constructed by connecting a RC circuit. Three kinds of output format are single-shot , continuous and toggle signal. Able to output parallels multiple keying signals from the transmitter. Absolute Maximum Rating Symbol Parameter VDD (Temp=25℃) Rating Unit Supply Voltage 5.5 V VI/O Input/Output Voltage -0.3 to VDD+0.3 V PD Power Dissipation 200 mW TOP OperatingTemperature -20 ~+70 ℃ TEST Storage Temperature -40 ~+125 ℃ Electrical Characteristics Conditions (Unless otherwise specified, VDD= 5V and Temp=25℃) Symbol Parameter Conditions Min. VDD Operating Voltage All Function Operations 2.2 - 5.0 V IDD Operating Current - - 1.0 mA fOSC Oscillation Frequency Key on without Load VDD=4.5∼5.5V 22 33 54 KHz IOH Output source current VO=4V - - -1.0 mA IOL Output sink current VO=1V 1.0 - - mA 1 Typ. Max. Unit