LC7465M

The LC7465M is a 64-key infrared remote controller transmitter IC that incorporates key-scaning,oscillator and timing circuit on-chip,resulting in a very low external component count.The LC7465M generates 256 function codes with the 64 function keys. The output data format consists of the mask-programmed custom code, the parity field,the mask-programmed system code, the function code and the data check code.The LC7465M operats from a 2.0V to 3.6V su pply and is available in 30-pin MFPs.

The LC7465M has the following features:(1)low external component count;(2)64 function keys;(3)256 function codes;(4)mask-programmable custon and system codes;(5)64 product codes;(6)output conforms to Japan's asso ciation for electric home applicance recommemded stanards for infrared remote controls;(7)on-chip input pull-down resistors;(8)2.0 to3.6 supply.etc.

It also has some outstanding absolute maximum ratings and electrical characteristics(VDD=2.0 to3.6V,Ta=-40 to 85).Absolute maximum ratings:(1):supply voltage ranges from Vss-0.3 V to 5.5V;(2)input voltage ranges from Vss-0.3 V to Vdd+0.3 V;(3)output voltage ranges from Vss-0.3 V to Vdd+0.3 V;(4) output current is -35 mA;(5)power dis sipation is 150 mW;(6)operating temperature ranges from -40 to 85;(7)storage temperature ranges from -50 to 125.electrical characteristics:(1)operating supply current is 1 mA when key pressed and no load;(2)standby su pply current is i uA when no key pressed and oscillator stopped;(3)K10 to K17,GCL,GCH,FCH,FCS to FC83 and SEL low-level input voltage is 0.7VDD V min and VDD V max;(4)KO0 to KO7and REM low-level output voltage is 0.3 V max when IOL is 0.1mA.(5):oscillator frequency is 433 kHz min,455 kHz typ and 477 kHz max.etc.