SP3203ECY-L Datasheet, PDF (1/16 Pages) Exar Corporation – 3V RS-232 Serial Transceiver with Logic Selector and 15kV ESD Protection

SP3203E
3V RS-232 Serial Transceiver with Logic
Selector and 15kV ESD Protection
FEATURES
• 3 Driver / 2 Receiver Architecture
• Logic selector function (V_L) sets TTL
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:
+15KV Human Body Model
+15KV IEC61000-4-2 Air Discharge
+8KV IEC61000-4-2 Contact Discharge
• Applications
• Palmtops
• Cell phone Data Cables
• PDA's
C1+ 1
V+ 2
C1- 3
C2+ 4
C2- 5
V- 6
T₁IN 7
T₂IN 8
T₃IN 9
R₂OUT 10
SP3203E
20 _SHUTDOWN
19 Vcc
18 GND
17 T₁OUT
16 T₂OUT
15 T₃OUT
14 R₁IN
13 _R2IN
12 V_L
11 R₁OUT
Now Available in Lead Free Packaging
DESCRIPTION
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 high-efficiency,
charge-pump power supply that requires only 0.1µF capacitors during 3.3V operation. This
charge pump and Exar'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 inter operation 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.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • www.exar.com

SP3203E_100_120810