SP3243B Datasheet | Sipex

DESCRIPTION The SP3223B and SP3243B products are RS-232 transceiver solutions intended for portable or hand-held applications such as notebook and palmtop puters. The SP3223B and SP3243B use an internal high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Sipex's driver architecture allow the SP3223B/3243B series to deliver pliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The SP3223B is a 2-driver/2-receiver device, and the SP3243B is a 3-driver/5-receiver device ideal for laptop/notebook puter and PDA applications. The SP3243B includes one plementary receiver that remains alert to monitor an external device's Ring Indicate signal while the device is shutdown. The AUTO ON-LINE® feature allows the device to automatically "wake-up" during a shutdown state when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than 1µA. SELECTION TABLE Device SP3223B SP3243B Power Supplies +3.0V to +5.5V +3.0V to +5.5V RS-232 Drivers 2 3 RS-232 Receivers 2 5 External ponents 4 capacitors 4 capacitors AUTO ON-LINE® Circuitry YES YES TTL 3-State YES YES No. of Pins 20 28 Applicable U.S. Patents - 5,306,954; and other patents pending. Rev. 6/30/03 SP3223B/3243B +3.0V to +5.5V RS-232 Transceivers © Copyright 2003 Sipex Corporation ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device. VCC -0.3V to +6.0V V+ (NOTE 1) -0.3V to +7.0V V- (NOTE 1) +0.3V to -7.0V V+ + |V-|...