Data Sheet
True +3.0V to +5.5V RS-232 Transceivers
SP3222EB / SP3232EB
General Description
The SP3222EB and SP3232EB series are RS-232
transceiver solutions intended for portable or hand-held
applications such as notebook or laptop computers. The
SP3222EB / SP3232EB series has a high-efficiency,
charge-pump power supply that requires only 0.1µF
capacitors in 3.3V operation. This charge pump allows the
SP3222EB / SP3232EB series to deliver true RS-232
performance from a single power supply ranging from
3.0V to 5.5V. The SP3222EB / SP3232EB are 2-driver /
2-receiver devices. The ESD tolerance of the SP3222EB /
SP3232E devices is over ±15kV for both Human Body
Model and IEC61000-4-2 Air discharge test methods. The
SP3222EB device has a low-power shutdown mode
where the devices’ driver outputs and charge pumps are
disabled. During shutdown, the supply current falls to less
than 1µA.
Features
■
■
■
■
■
Meets true EIA / TIA-232-F standards from a 3.0V to
5.5V power supply
250kbps transmission rate under load
1μA low power shutdown with receivers active
(SP3222EB)
Interoperable with RS-232 down to a 2.7V power source
Enhanced ESD specifications:
±15kV Human Body Model
±15kV IEC61000-4-2 Air Discharge
±8kV IEC61000-4-2 Contact Discharge
Ordering Information -
page 18
Selection Table
Table 1:
Selection Table
Device
Power Supplies
RS-232
Drivers
RS-232
Receivers
External
Components
Shutdown
TTL
3-State
# of Pins
SP3222EB
SP3232EB
3.0V to 5.5V
3.0V to 5.5V
2
2
2
2
4 Capacitors
4 Capacitors
Yes
No
Yes
No
20
16
Pinouts
C1+
GND
12 T1OUT
11 R1IN
10 R1OUT
9
5
6
7
8
T1IN
EN
1
20 SHDN
19 V
CC
18 GND
17
SP3222EB 16
T1OUT
R1IN
C1+ 1
V+ 2
C1-
C2+
C2-
V-
T2OUT
R2IN
3
4
5
6
7
8
16 V
CC
15 GND
14 T1OUT
SP3232EB 13 R1IN
12 R1OUT
11 T1IN
10
9
T2IN
R2OUT
1
C2+ 2
C2-
V-
3
4
C1-
C1+ 2
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
3
4
5
6
7
8
9
16 15 14 13
SP3232EB
15 R1OUT
14
N.C.
T2OUT
R2IN
12 T2IN
11
N.C.
R2OUT 10
SSOP / TSSOP
SSOP / NSOIC / TSSOP
QFN
Figure 1:
SP3222EB and SP3232EB Pinouts
• www.maxlinear.com•
Rev 1.0.7
R2OUT
T2IN
13 T1IN
V
CC
V+
SP3222EB / SP3232EB True +3.0V to +5.5V RS-232 Transceivers Data Sheet
Revision History
Revision History
Revision
--
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
Release Date
11/2/05
9/9/09
6/7/11
3/14/13
8/14/14
5/28/15
10/27/15
2/23/16
1/24/20
Change Description
Legacy Sipex Datasheet
Convert to Exar Format. Update ordering information and change revision to 1.0.0.
Remove obsolete devices per PDN 110510-01 and change ESD rating to IEC-61000-4-2..
Correct ype error to RX input voltage range and TX transition region slew rate condition.
Add Max Junction temperature and package thermal information.
Update Absolute Max Rating for RxIN input voltage to ±25V, update logo.
Add SP3232EBER (QFN 16) preliminary package option.
Remove preliminary status of QFN 16 package option.
Update to MaxLinear template and logo. Update Ordering Information. Remove obsolete
WSOIC references. Move ESD tolerance levels to new ESD Ratings section located on
page 1.
1/24/20
Rev 1.0.7
ii
SP3222EB / SP3232EB True +3.0V to +5.5V RS-232 Transceivers Data Sheet
Table of Contents
Table of Contents
General Description............................................................................................................................................. i
Features............................................................................................................................................................... i
Selection Table ................................................................................................................................................... i
Pinouts.................................................................................................................................................................. i
Specifications ..................................................................................................................................................... 1
Absolute Maximum Ratings...........................................................................................................................................1
ESD Ratings ..................................................................................................................................................................1
Operating Conditions.....................................................................................................................................................2
Electrical Characteristics ...............................................................................................................................................2
Typical Performance Characteristics................................................................................................................ 4
Pin Information ................................................................................................................................................... 5
Pin Configurations ........................................................................................................................................................ 5
Pin Descriptions ............................................................................................................................................................5
Typical Operating Circuits ................................................................................................................................. 6
Description .......................................................................................................................................................... 7
Theory of Operation ..................................................................................................................................................... 7
Drivers ..................................................................................................................................................................7
Receivers .............................................................................................................................................................8
Charge Pump .......................................................................................................................................................8
ESD Tolerance ...................................................................................................................................................10
Mechanical Dimensions ................................................................................................................................... 12
SSOP20 ......................................................................................................................................................................12
SSOP16 ......................................................................................................................................................................13
TSSOP16 ....................................................................................................................................................................15
TSSOP20 ....................................................................................................................................................................16
QFN16 5x5 ..................................................................................................................................................................17
Ordering Information........................................................................................................................................ 18
1/24/20
Rev 1.0.7
iii
SP3222EB / SP3232EB True +3.0V to +5.5V RS-232 Transceivers Data Sheet
List of Figures
List of Figures
Figure 1: SP3222EB and SP3232EB Pinouts ....................................................................................................... i
Figure 2: Transmitter Output Voltage vs. Load Capacitance................................................................................ 4
Figure 3: Slew Rate vs. Load Capacitance........................................................................................................... 4
Figure 4: Supply Current vs. Load Capacitance When Transmitting Data ........................................................... 4
Figure 5: Supply Current vs. Supply Voltage........................................................................................................ 4
Figure 6: Transmitter Output Voltage vs. Supply Voltage..................................................................................... 4
Figure 7: Pinout Configurations for the SP3222EB and SP3232EB..................................................................... 5
Figure 8: SP3222EB Typical Operating Circuit..................................................................................................... 6
Figure 9: SP3232EB Typical Operating Circuit..................................................................................................... 6
Figure 10: SP3222EB / SP3232EB Driver Loopback Test Circuit ........................................................................ 7
Figure 11: Loopback Test Results at 120kbps ..................................................................................................... 7
Figure 12: Loopback Test Results at 250kbps ..................................................................................................... 8
Figure 13: Charge Pump — Phase 1.................................................................................................................... 9
Figure 14: Charge Pump — Phase 2.................................................................................................................... 9
Figure 15: Charge Pump Waveforms ................................................................................................................... 9
Figure 16: Charge Pump — Phase 3.................................................................................................................... 9
Figure 17: Charge Pump — Phase 4.................................................................................................................... 9
Figure 18: ESD Test Circuit for Human Body Model .......................................................................................... 10
Figure 19: ESD Test Circuit for IEC61000-4-2 ................................................................................................... 10
Figure 20: ESD Test Waveform for IEC61000-4-2 ............................................................................................. 11
Figure 21: Mechanical Dimensions, SSOP20..................................................................................................... 12
Figure 22: Mechanical Dimensions, SSOP16..................................................................................................... 13
Figure 23: Mechanical Dimensions, NSOIC16 ................................................................................................... 14
Figure 24: Mechanical Dimensions, TSSOP16 .................................................................................................. 15
Figure 25: Mechanical Dimensions, TSSOP20 .................................................................................................. 16
Figure 26: Mechanical Dimensions, QFN16 5x5 ................................................................................................ 17
1/24/20
Rev 1.0.7
iv
SP3222EB / SP3232EB True +3.0V to +5.5V RS-232 Transceivers Data Sheet
List of Tables
List of Tables
Table 1: Selection Table ........................................................................................................................................ i
Table 1: Absolute Maximum Ratings .................................................................................................................... 1
Table 2: ESD Ratings ........................................................................................................................................... 1
Table 3: Operating Conditions .............................................................................................................................. 2
Table 4: Electrical Characteristics ....................................................................................................................... 2
Table 5: Pin Descriptions...................................................................................................................................... 5
Table 6: SP3222EB Truth Table Logic for Shutdown and Enable Control ........................................................... 8
Table 7: Ordering Information............................................................................................................................. 18
1/24/20
Rev 1.0.7
v
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