(Hong Kong)
Product Summary
The MM54240N is an Asynchronous Receiver/Transmitter Remote Controller. The MM54240N is a monolithic MOS integrated circuit utilizing N-channel low-threshold, enhancement mode and ionimplanted depletion mode devices. The circuit is designed for processor-type remote control applications. The data transmission consists of a pulse width modulated serial data stream of 18 bits. This stream consists of 7 address bits, 1 command bit, 8 data bits, 1 parity bit and 1 dummy bit in that order. The applications of the MM54240N include transmitting data to and receiving data from remote A-D/D-A, remote microprocessor units, remote digital transducer or remote data peripheral devices.
Parametrics
MM54240N absolute maximum ratings: (1)Voltage on Any Pin with Respect to VSS: -0.5V to +12.0V; (2)Operating Temperature: -40℃ to +85℃; (3)Storage Temperature: -65℃ to +150℃; (4)Lead Temperature (Soldering, 10 seconds): 300℃.
Features
MM54240N features: (1)Supply voltage rangeD4.75V to 11.5V single supply; (2)Low quiescent current 5.0 mA maximum; (3)On-chip oscillator based on inexpensive R-C components; (4)Pulse width modulation techniques minimize error and maximize frequency tolerance; (5)Mode input for either master or slave operations; (6)Chip select (CS) input in the master mode; (7)Selectable output port options in the slave mode; (8)Transmit/receive control output (CS) in the slave mode.
Diagrams
