SP3223E/EB/EU
Intelligent +3.0V to +5.5V RS-232 Transceivers
FEATURES
• Meets true EIA/TIA-232-F Standards
EN
20
19
18
17
16
15
1
2
3
4
5
6
7
SHUTDOWN
Vcc
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
C1+
V+
GND
C1-
T1OUT
R1IN
• AUTO ON-LINE® circuitry automatically
wakes up from a ꢀµA shutdown
• Minimum 250Kbps data rate under load
(EB)
SP3223E
C2+
C2-
V-
R1OUT
14
13
ONLINE
T1IN
• ꢀ Mbps data rate for high speed RS-232
(EU)
• Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of VCC
Variations
T2OUT
R2IN
8
9
12 T2IN
10
R2OUT
11 STATUS
• ESD Specifications:
+ꢀ5KV Human Body Model
+ꢀ5KV IEC6ꢀ000-4-2 Air Discharge
+8KV IEC6ꢀ000-4-2 Contact Discharge
Now Available in Lead Free Packaging
DESCRIPTION
The SP3223 products are RS-232 transceiver solutions intended for portable applications
such as notebook and hand held computers. These products use an internal high-efficiency,
charge-pump power supply thatrequires only0.ꢀµFcapacitorsin3.3Voperation.Thischarge
pump and Exar's driver architecture allow the SP3223 series to deliver compliant RS-232
performance from a single power supply ranging from +3.3V to +5.0V. The SP3223 is a 2-
driver/2-receiver device ideal for laptop/notebook computer and PDA applications.
The AUTO ON-LINE® feature allows the device to automatically "wake-up" during a shut-
down state when an RS-232 cable is connected and a connected peripheral is turned on.
Otherwise, the device automatically shuts itself down drawing less than ꢀµA.
SELECTION TABLE
Device
Power
Supplies
RS- 232
Drivers Receivers
RS-232
AUTO ON-LINE ®
TTL
3-state
Data Rate
(kbps)
SP3223E +3.0V to +5.5V
SP3223EB +3.0V to +5.5V
SP3223EU +3.0V to +5.5V
2
2
2
2
2
2
YES
YES
YES
YES
YES
YES
ꢀ20
250
ꢀ000
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP3223E/EB/EU_ꢀ0ꢀ_0627ꢀ2
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