SP3224E-SP3227E
®
3.0V to 5.5V RS-232 Transceivers with Auto On-Line Plus
FEATURES
■ꢀ 15kVꢀESDꢀprotectedꢀRS-232ꢀI/Oꢀpins
■ꢀ AutoꢀOn-line ꢀPlusꢀautomaticꢀpowerꢀsavingꢀmodeꢀ
■ꢀ MeetsꢀtrueꢀEIA/TIA-232-Fꢀstandardsꢀfromꢀ+3.0Vꢀtoꢀ
+5.5Vꢀpowerꢀsupply.
SHUTDOWN
READY
C1+
20
19
18
1
2
3
4
5
6
7
8
9
V
CC
®
GND
OUT
V+
T
1
C1-
17
SP3224E
SP3225E
R
1
IN
C2+
C2-
16
15
14
13
12
11
■ꢀ AdheresꢀtoꢀEIA/TIA-562ꢀforꢀinteroperabilityꢀwithꢀ
R
1
OUT
ꢀ
EIA/TIA-232ꢀdownꢀtoꢀaꢀ+2.7Vꢀsupplyꢀvoltage
■ꢀ Regulatedꢀchargeꢀpumpꢀyieldsꢀstable
RS-232ꢀoutputsꢀ
ONLINE
IN
IN
STATUS
V-
T
1
T
2
OUT
ꢀ
T
2
R
2
IN
■ꢀ Drop-inꢀreplacementꢀtoꢀMAX3224,ꢀICL3224,ꢀ
MAX3225,ꢀICL3225,ꢀMAX3226,ꢀICL3226,ꢀ
MAX3227ꢀandꢀICL3227
R
2
OUT
10
TyPICAL APPLICATIONS
■ꢀ Diagnostic/Serialꢀportsꢀon
■ꢀ SP3224EꢀandꢀSP3226EꢀreducedꢀEMIꢀwithꢀaꢀslewꢀ
rateꢀcontrolledꢀ250kbpsꢀdataꢀrate
■ꢀ SP3225EꢀandꢀSP3227E-ꢀhighꢀspeedꢀdataꢀrateꢀofꢀ
1ꢀMbps.ꢀ
■ꢀ AvailableꢀinꢀRoHSꢀcompliant,ꢀLeadꢀFree
ꢀ embeddedꢀapplications
■ꢀ HandheldꢀTestꢀEquipment
■ꢀ PCꢀrelatedꢀPeripheralsꢀandꢀ
ꢀ
Packaging
ꢀ
Equipment
■ꢀ BatteryꢀPoweredꢀEquipment
■ꢀ Point-of-saleꢀEquipment
■ꢀ Set-topꢀBox
DESCRIPTION
TheꢀSP3224E/3225Eꢀareꢀ2-driver/2-receiverꢀdevicesꢀandꢀtheꢀSP3226E/SP3227Eꢀareꢀ1-
driver/1-receiverꢀdevices.ꢀAllꢀareꢀidealꢀforꢀcomputerꢀperipherals,ꢀpoint-of-saleꢀequipment,ꢀ
consumerꢀ andꢀ embeddedꢀ applications.ꢀ Theseꢀ devicesꢀ useꢀ anꢀ internalꢀ high-efficiency,ꢀ
charge-pumpꢀ powerꢀ supplyꢀ thatꢀ requiresꢀ onlyꢀ 0.1μFꢀ capacitorsꢀ inꢀ 3.3Vꢀ operation.ꢀThisꢀ
chargeꢀpumpꢀandꢀExar’sꢀdriverꢀarchitectureꢀallowꢀitꢀtoꢀdeliverꢀcompliantꢀRS-232ꢀperfor-
manceꢀfromꢀaꢀsingleꢀpowerꢀsupplyꢀrangingꢀfromꢀ+3.0Vꢀtoꢀ+5.5V.ꢀꢀAtꢀvoltagesꢀbetweenꢀ2.7Vꢀ
andꢀ3.0VꢀtheꢀdriverꢀoutputsꢀareꢀcompliantꢀwithꢀRS-562ꢀandꢀcanꢀinterfaceꢀtoꢀRS-232ꢀoverꢀ
shortꢀcables.
®
TheꢀAutoꢀOn-line ꢀPlusꢀfeatureꢀallowsꢀtheꢀdeviceꢀtoꢀautomaticallyꢀ“wake-up”ꢀduringꢀaꢀshut-
downꢀstateꢀuponꢀdetectingꢀactivityꢀandꢀtoꢀenterꢀaꢀlowꢀpowerꢀshutdownꢀifꢀidle.ꢀꢀThisꢀpowerꢀ
savingꢀfeatureꢀfunctionsꢀwithoutꢀsystemꢀinterventionꢀorꢀmodificationsꢀtoꢀsoftwareꢀorꢀdriv-
ers.
SELECTION TABLE
ꢀꢀꢀꢀꢀAllꢀdevicesꢀfeatureꢀ3.0Vꢀtoꢀ5.5Vꢀpowerꢀsupply,ꢀ4ꢀsmallꢀchargeꢀpumpꢀcapacitors,ꢀandꢀ15kVꢀESDꢀ
protection.
Device
DataꢀRateꢀ(bps)
No.ꢀofꢀ
READYꢀpin
Low-PowerꢀShutdown
Package
Drivers/Receivers
®
SP3224E
SP3225E
SP3226E
SP3227E
250k
1M
2/2
2/2
1/1
1/1
Yes
Yes
Yes
Yes
AutoꢀOn-Line ꢀPlus
20ꢀSSOP/TSSOP
20ꢀSSOP/TSSOP
16ꢀSSOP/TSSOP
16ꢀSSOP/TSSOP
®
AutoꢀOn-Line ꢀPlus
®
250k
1M
AutoꢀOn-Line ꢀPlus
®
AutoꢀOn-Line ꢀPlus
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 5ꢀ0-668-70ꢀ7 • www.exar.com
SP3224E,3225E,3226E,3227E_ꢀ0ꢀ_08ꢀ7ꢀꢀ
ꢀ