SP3203 Datasheet, PDF (1/14 Pages) Sipex Corporation – 3V RS-232 Serial Transceiver with Logic Selector

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SP3203
3V RS-232 Serial Transceiver with Logic Selector
■ 3 Driver/ 2 Receiver Architecture
■ Logic selector function (V ) sets TTL
L
input/output levels for mixed logic
systems
■ Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■ Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a
+2.7V power source
■ Minimum 250Kbps data rate under load
■ Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V_CC
Variations
■ ESD Specifications:
+2kV Human Body Model
■ Applications
■ Palmtops
■ Cell phone Data Cables
■ PDA's
DESCRIPTION
The SP3203 provides a RS-232 transceiver solution for portable and hand-held applications
such as palmtops, PDA's and cell phones. The SP3203 uses an internal high-efficiency,
charge-pump that requires only 0.1µF capacitors during 3.3V operation. This charge pump
and Sipex's driver architecture allow the SP3203 to deliver compliant RS-232 performance
from a single power supply ranging from +3.0V to +5.5V.
The SP3203 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.
Rev. 6/25/03
SP3203
1
© Copyright 2003 Sipex Corporation