PT8A974LP - Pericom Semiconductor Corporation

PT8A974LP (PT8A9701P / PT8A974P) 8-Function Remote Controller

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’ combination application. Ordering I.

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 components needed General Description T.