參數(shù)資料
型號: SP3227ECY-L/TR
廠商: Exar Corporation
文件頁數(shù): 7/23頁
文件大?。?/td> 0K
描述: IC TXRX RS232 ESD SD 16TSSOP
標(biāo)準(zhǔn)包裝: 2,500
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: RS232
電源電壓: 3 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 16-TSSOP
包裝: 帶卷 (TR)
5
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP3224E,3225E,3226E,3227E_0_087
AutoOn-Line(existing)
Deviceenterslow-powermodeifreceiverinputsseelessthanvalid+/-3V.
STATUS(orINVALID)signaloutputindicatesifvalidsignalvoltageisat
receivers.
AutoOn-LinePlus(new)
Deviceenterslow-powermodeifdriverinputsorreceiverinputsseeno
transitionsfor30seconds.Returntofullpowermodeuponanytransitionon
anydriverinputorreceiverinput
Shutdownoccursevenifdatacableisconnectedtoanactivedriver,aslong
asallinputsremainunchanged
STATUS(orINVALID)signalfunctionsasbefore.Indicatesifvalidsignal
voltageispresent.Buthasnoeffectonshutdown
ForSP3224EtheENinputisreplacedwithaREADYoutput.READYdrives
highwhenchargepumpachievesgreaterthan-4VVss(V-).Indicates“ready
totransmit.”
shutdown,thechargepumpsareturnedoff.
V+chargepumpoutputdecaystoVCC,the
V-outputdecaystoGND.Thedecaytime
willdependonthesizeofcapacitorsused
forthechargepump.Onceinshutdown,the
timerequiredtoexittheshutdownstateand
havevalidV+andV-levelsistypically50μs.
When the SP3224E-SP3227E drivers and
internalchargepumparedisabled,thesup-
plycurrentisreducedto1μA.
OperatingMode
ONLINE
SHDN
|Rin| >
±2.7V
IdleInputs
(Rxin &
Txin)
Txout
Rxout
ForcedShutdown
X
0
X
Hi-Z
Active
ForcedOn-Line
X
Active
AutoOn-LinePlus
(Wakewhenactive)
0
X
Active
AutoOnLinePlus
(Off-Linewhenidle)
0
X
Idle>30s
Hi-Z
Active
AutoOn-LinePlus
(Wakeoncable)
STATUS
Yes
X
Active
AutoOn-LinePlus
(Wakewhenactive)
STATUS
No
Active
AutoOn-LinePlus
(Off-Linewhenidle)
STATUS
No
Idle>30s
Hi-Z
Active
AutoOn-Line
(Wakeoncable)
STATUS
Yes
X
Active
AutoOn-Line
(AutoShutoff)
STATUS
No
X
Hi-Z
Active
AutoOn-linePlusTruthTable
THEORy OF OPERATION
ComparisonofAutoOn-line Features
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