SP3243EUEA-L-TR Datasheet, PDF (1/25 Pages) Exar Corporation – 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers

SP3243E
3 Driver/5 Receiver Intelligent +3.0V to +5.5V
RS-232 Transceivers
FEATURES
■ 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
■ AUTO ON-LINE^® circuitry automatically
wakes up from a 1µA shutdown
■ Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V_CC
Variations
■ Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
■ 250 Kbps min. transmission rate (EB)
■ 1000 Kbps min. transmission rate (EU)
■ Ideal for High Speed RS-232 Applications
C2+ 1
C2- 2
V- 3
R₁IN 4
R₂IN 5
R₃IN 6
R₄IN 7
R₅IN 8
T₁OUT 9
T₂OUT 10
T₃OUT 11
T₃IN 12
T₂IN 13
T₁IN 14
SP3243E
28 C1+
27 V+
26 VCC
25 GND
24 C1-
23 _ONLINE
22 _SHUTDOWN
21 STATUS
20 R₂OUT
19 R₁OUT
18 R₂OUT
17 R₃OUT
16 R₄OUT
15 R₅OUT
Now Available in Lead Free Packaging
DESCRIPTION
The SP3243E products are 3 driver/5 receiver RS-232 transceiver solutions intended for portable
or hand-held applications such as notebook and palmtop computers. The SP3243E includes one
complementary receiver that remains alert to monitor an external device's Ring Indicate signal while
the device is shutdown. The SP3243E and EB devices feature slew-rate limited outputs for reduced
crosstalk and EMI. The "U" and "H" series are optimized for high speed with data rates up to 1Mbps,
easily meeting the demands of high speed RS-232 applications. The SP3243E series uses an internal
high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This
charge pump and Exar's driver architecture allow the SP3243E series to deliver compliant RS-232
performance from a single power supply ranging from +3.0V to +5.5V. The AUTO ON-LINE^® feature
allows the device to automatically "wake-up" during a shutdown state when an RS-232 cable is con-
nected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down
drawing less than 1µA.
SELECTION TABLE
Device
Power
Supplies
RS-232 RS-232
External
Auto TTL # of Data ESD
Drivers Receivers Components On-Line 3- Pins Rate Rating
Circuitry State
SP3243E +3.0V to +5.5V
3
5
4 Capacitors Yes
Yes 28 120 15kV
SP3243EB +3.0V to +5.5V
3
5
4 Capacitors Yes
Yes 28 250 15kV
SP3243EH +3.0V to +5.5V
3
SP3243EU +3.0V to +5.5V
3
5
4 Capacitors Yes
Yes 28 460 15kV
5
4 Capacitors Yes
Yes 28 1000 15kV
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3243E_102_060611