SP3203E

The SP3203E provides a RS-232 transceiver solution for portable and hand-held applications such as palmtops, PDA's and cell phones. The SP3203E uses an internal highefficiency, charge-pump that requires only 0.1µF capacitors during 3.3V operation. This charge pump and Sipex's driver architecture allow the SP3203E to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V.

The SP3203E is a 3-driver/2-receiver device, with a unique V_L pin to program the TTL input and output logic levels to allow interoperation in mixed-logic voltage systems such as PDA's and cell phones. Receiver outputs will not exceed V_L for V_OH and transmitter input logic levels are scaled by the magnitude of the V_L input.

The SP3203E is a 3-driver/2-receiver device that can be operated as a full duplex, RS-232 serial transceiver with the 3rd driver acting as a control line allowing a Ring Indicator (RI) signal to alert the UART on the PC.

This transceiver meet the EIA/TIA-232 and ITUT V.28/V.24 communication protocols and can be implemented in battery-powered, portable, or hand-held applications such as notebook or palmtop computers, PDA's and cell phones. The SP3203E devices feature Sipex's proprietary and patented (U.S.#5,306,954) on-board charge pump circuitry that generates ±5.5V RS-232 voltage levels from a single +3.0V to +5.5V power supply. The SP3203E devices can operate at a minimum data range of 250kbps, driving a single driver. The SP3203E is a 3-driver/2 receiver device.

V_CC...............................................................-0.3V to +6.0V
V+ (NOTE 1)..................................................-0.3V to +7.0V
V- (NOTE 1)...................................................+0.3V to -7.0V
V+ + |V -| (NOTE 1).....................................................+13V
ICC (DC VCC or current).........................................±100mA
Input Voltages
TxIN, SHUTDOWN = GND..............................-0.3V to +6.0V
RxIN............................................................................±25V
Output Voltages
TxOUT......................................................................±13.2V
RxOUT.................................................v-0.3V to (V_L + 0.3V)
Short-Circuit Duration
TxOUT................................................................Continuous
Storage Temperature...............................-65°C to +150°C
Power Dissipation per Packages
20-Pin TSSOP
(derate 7.0mW/°C above+70°C)............................560mW