PT2268 PT2128 220PF PT2268Z-S PT2268Z

Fax: 886-2-29174598 URL: http://www.princeton.com.tw Remote Control Encoder PT2268 PT2268 is a remote control encoder utilizing

Tel : 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Remote Control Encoder PT2268 PT2268 PT2268 PT2268 is a remote control encoder utilizing CMOS Technology specially designed for use with the PT2128 PT2128. Using a special coding technique, PT2268 PT2268 increases noise immunity to a very great extent. It is housed in 16-Pins DIP Package and has a maximum of eight (8) input channels. Its high performance features make PT2268 PT2268 a MUST in every fan and other electrical home appliance remote control application. PTC provides a new version of PT2268 PT2268 which can be identified by the "B" mark on the lower right hand corner of the IC's topcode (beside the date code). Please refer to the diagram on the Order Information Section. The difference between the old and new version is the external application circuit in the OSC1 and OSC2 pins. (see Oscillator Section) CMOS Technology Low Power Consumption Very High Noise Immunity Wide Range of Operating Voltage : Vcc = 2.2 ~ 5.0 Volts Transmits signals to a maximum of 8 channels Start Word Custom Code Options Available (Please contact PTC for details.) Fan Remote Control Air Cleaner Humidifier Heater PT2268 PT2268 v 2.4 Page 1 Revised March 1999 Tel : 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Remote Control Encoder PT2268 PT2268 Note1 = For pins I1~I8: Any one of the said pins is set to HIGH while the others are set to LOW. PT2268 PT2268 v 2.4 Page 2 Revised March 1999 Tel : 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Remote Control Encoder PT2268 PT2268 PT2268 PT2268 IR Transmitter Application Circuit + 3V _ Battery + 47uF(see Layout Note) I1 Vcc I2 OSC1 I3 OSC2 I4 TXOUT I5 C4 I6 C5 I7 C6 I8 Vss 220PF 220PF 220PF 220PF R PNP IR LED 2 Ohms PT2268 PT2268 Notes: 1. C3 (default value) = 1. For more details, please refer to Start Word Custom Code Section. 2. Resistor ( R ) is the Current Limit Impedance whose value must be greater than 220 Ohms. Resistor ( R ) Recommended Value = 1 K Ohms Layout Note: Place 47uF capacitor as near as possible to the PT2268 PT2268's Vss Pin. Part Number PT2268Z-S PT2268Z-S PT2268Z PT2268Z PT2268 PT2268 v 2.4 Package 16 Pins, DIP, 300 16 Pins, SOP, Page 3 Revised March 1999