PT2240

DESCRIPTION

PT2240B is encoder utilizing CMOS Technology specially designed for remote control applications. It

has 220 Address. It can support up to 4 Data Bits and is housed in 8 pin SOP package. It encodes

address and data codes into a coded waveform suitable for RF modulation. The pin assignments and

application circuit are optimized for easy PCB Layout and cost saving advantage. Furthermore,

PT2240B’s intrinsic feature of being able to support 4 data bits considerably reduces inventory

pressures.

FEATURES

• CMOS technology

• Low power consumption

• Least external components

• High noise immunity

• Single resistor oscillator

• Operating voltage: 1.8~15V

• 4 Data pins

• 220 address codes

• Available in SOP package

• Reduction of inventory pressures

APPLICATIONS

• Burglar alarm system

• Car security system

• Car/Garage door controller

• Home/Office security system

• Personal alarm system

它与eV1527实现的功能相同，在使用成熟上，eV1527较早。并且它们的脚位顺序是相反！