SP3249E Datasheet, PDF (1/14 Pages) Sipex Corporation – Intelligent +3.0V to +5.5V RS-232 Transceivers

®
SP3249E
Intelligent +3.0V to +5.5V RS-232 Transceivers
s Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
s Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a +2.7V
power source
s Minimum 250Kbps data rate under load
s Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V
CC
Variations
s Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC1000-4-2 Air Discharge
+8KV IEC1000-4-2 Contact Discharge
DESCRIPTION
The SP3249E device is an RS-232 transceiver solution intended for portable or hand-held
applications such as notebook and palmtop computers. The SP3249E uses 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 SP3249E device to
deliver compliant RS-232 performance from a single power supply ranging from +3.0V to
+5.0V. The SP3249E is a 5-driver/3-receiver device, ideal for laptop/notebook computer and
PDA applications.
SELECTION TABLE
Part
Number
Power
Supplies
SP3223E +3.0V to +5.5V
SP3243E +3.0V to +5.5V
SP3238E +3.0V to +5.5V
SP3239E +3.0V to +5.5V
SP3249E +3.0V to +5.5V
RS-232 RS-232
External
Drivers Receivers Components
2
2
4 capacitors
3
5
4 capacitors
5
3
4 capacitors
5
3
4 capacitors
5
3
4 capacitors
AUTO ON-LINE™
Circuitry
YES
YES
YES
NO
NO
TTL
3-State
Number
of Pins
YES
20
YES
28
YES
28
YES
28
NO
24
Applicable U.S. Patents - 5,306,954; and other patents pending.
Rev.4/08/02
SP3249E Intelligent +3.0V to +5.5V RS-232 Transceivers
1
© Copyright 2002 Sipex Corporation