描述 Description

The μPD4724 is a high breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232-E
standard. This IC features various functions, such as standby, and incorporates a DC/DC converter that switches boost
multiples, enabling operation at both +3.3 V and +5 V single supply voltage.
The μPD4724 incorporates three drivers and five receivers, so an RS-232 interface circuit can be easily constructed
by connecting five external capacitors.

FEATURES
? Based on EIA/TIA-232-E (RS-232-C) standard.
? Single power supply: +3.3 V or +5 V (selectable with the VCHA pin)
? Standby mode: Setting the standby pin to low level switches this IC into the standby mode and makes
the driver outputs high-impedance.
? Enable mode: When the enable pin is high level during the standby mode, two receivers can operate as inverters
without hysteresis width (The other three receivers are fixed to high level).

特性 Features

? Based on EIA/TIA-232-E (RS-232-C) standard.
? Single power supply: +3.3 V or +5 V (selectable with the VCHA pin)
? Standby mode: Setting the standby pin to low level switches this IC into the standby mode and makes
the driver outputs high-impedance.
? Enable mode: When the enable pin is high level during the standby mode, two receivers can operate as inverters
without hysteresis width (The other three receivers are fixed to high level).?