UPD4722

Features:

Conforms to EIA/TIA-232-E (former name, RS-232C) standards
Selectable +3.3 V/+5 V single power supply (selected by VCHA pin)
By setting the standby pin to a low level (standby mode), circuit current can be reduced. At such times, the driver
   output is in a high-impedance state.
Even in the standby mode, 2 receiver circuits can operate as inverters without hysteresis width.
  The other 2 circuits are fixed at a high level.


Pinout




Specifications

Parameter	Symbol	Ratings	Unit
Supply Voltage (VCHA = L)	VCC	0.5 to +7.0	V
Supply Voltage (VCHA = H)	VCC	0.5 to +4.5	V
Driver Input Voltage	DIN	0.5 to VCC +0.5	V
Receiver Input Voltage	RIN	30.0 to +30.0	V
Control Input Voltage(STBY,VCHA,EN)	VIN	0.5 to VCC +0.5	V
Driver Output Voltage	DOUT	25.0 to +25.0Note 6	V
Receiver Output Voltage	ROUT	0.5 to V +0.5	V
Input Current (DIN, STBY,VCHA, EN)	IIN	±20.0	mA
Operating Ambient Temperature	TA	40 to +85	°C
Storage Temperature	Tstg	55 to +150	°C
Total Power Dissipation	PT	0.5	W

Description

The PD4722 is a high-breakdown voltage silicon gate CMOS line driver/receiver based on the EIA/TIA-232-Etandard. The internal DC/DC converter can switch between multiple voltages, allowing it to operate with a single +3.3 or +5 V power supply. It also provides standby function.This IC incorporates 4 driver circuits and 4 receiver circuits. An RS-232 interface circuit can be easily configuredy connecting 5 capacitors externally.