PT8A974P Description
The PT8A9701P and PT8A974P/974LP is a pair of CMOS LSIs designed for remote controlled toy car application. They have eight control keys for controlling the corresponding motion, i.e., forward, backward, left, right, turbo and 3 functional keys, of the remote controlled car. They also have ‘Forward (Backward)’ and ‘Turbo’ bination application.
PT8A974P Key Features
- The PT8A9701P works as the encoder and the PT8A974P/974LP works as the decoder
- Nine output pins, 5 for forward, backward, left, right and turbo functions, and 3 functional keys
- Operation power supply for PT8A9701: 3V to 12V (with series resistor)
- Auto power-off if no key pressed (PT8A9701P)
- Motor current limit to meet toy safety standard HD271 (PT8A974P/974LP)
- Low operating current
- On-chip oscillator with an external resistor
- On-chip reversing amplifiers
- Built-in 3.7V Zener (Vz) (PT8A974P) and 3.1V Zener (Vz) (PT8A974LP)
- Few external ponents needed