參數(shù)資料
型號(hào)： TypeSP3220EBCA
元件分類(lèi)： 外設(shè)及接口
英文描述： Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C
中文描述： 電可擦除可編程邏輯器件
文件頁(yè)數(shù)： 9/21頁(yè)
文件大?。?/td> 456K
代理商： TYPESP3220EBCA
Date: 8/30/05 SP3220E/EB/EU High ESD RS-232 Driver/Receiver Copyright 2005 Sipex Corporation
9
DESCRIPTION
The
SP3220EEBEU
devcesme theEATA
232andV28V24commncaonpoocosand
canbememnednbateypoweed potabe
o handhedappcaonssuchasnoebooko
pamopcomues The
SP3220EEBEU
de
vcesfeaueSpexspopieayonboadchage
pum crcutrytha geneaes2xV
votageevesfromasnge+30Vo fo RS232
suppy Thsseiessdea o +33Vonysysem
mxed+30Vto+55Vsysem o +50Vony
sysemtha requretrueRS232pefomnce
TheSP3220EB
devcehasadive tha canope-
aea adaaraeo 250Kbpsfuyloaded The
SP3220EUcanopeaea 1000Kbps theSP3220E
opeaesa atypca daaraeo 235Kbpsfuy
loaded
The
SP3220EEBEU
isa1dive/1receve de
vceidea fo potabeo handhed appcaons
The
SP3220EEBEU
feauesa1
Ashudown
mdetha reducespowe consumtionandex
tendsbateyifenpotabesysem Itsreceves
remnsacivenshudownmde aowngexe-
na devcestobemntoedusngony1
μ
Asuppy
curen.
THEORY OF OPERATION
The
SP3220EEBEU
devcesaemdeupo
theebasccrcut bocks 1 Dve, 2 Receve,
and3 theSpexpopieaychagepum.
Thedive isaninvetingleve transme tha
convetsTTLo CMOSogclevesto+50VEA
TA232eves nvetedreavetothenpu ogc
leves Typcay theRS232oupu votageswng
is+55Vwhnoloadanda leas +5Vmnmm
fuyoaded Thedive oupusaepoecedagans
innteshot-crcutstogoundwhou degada
tionnreabity Dve oupusw me EATA
562eveso +37Vwhsuppyvotagesasowas
27V
TheSP3220EBdive typcaycanopeaea a
daaraeo 250Kbpsfuyloadedwh3K
in
paae wh1000pF ensuingcomabitywh
PCtoPCcommncaionsotwae The
SP3220EUdive canguaaneeadaaraeo
1000Kbpsfuyloadedwh3
1
inpaae wh
250pF
Thesewraeo theSP3220EandSP3220EB
oupusaenenayimedoamxmmo 30V
μ
sinode tome theEAsandads(EARS
232D217 Paagaph5. Thetranstiono the
loadedoupu fromHGHoLO asomesthe
mnoonctyrequremnso thesandad The
sewaeo theSP3220EUsno nenayimed
Thsaow t totransma mchfase daaraes
Fgue12
show aoopbackcrcut usedoes the
RS232dive.
Fgue13
show thetes resutso
theloopbackcrcut whtheSP3220EBdive
acivea 250KbpswhanRS232oadnpaae
wha1000pFcapacto.
Fgue14
show thetes
resutswheetheSP3220EUdive wasacivea
1000KbpsandoadedwhanRS232receve n
paae wha250pFcapacto. AsodRS232
daatransmssonraeo 250Kbpspovdescom
pabitywhmnydesgnsinpesona comue
peipheasandLANappcaons
The
SP3220EEBEU
divesoupu sagesuned
of (hghZ whenthedevcesnshudownmde
henthepowe isof, the
vcepemstheoupustobedivenupto de
Thedivesinpu doesno havepu-upressos
Desgnesshoudconnec anunusednpu toV
o GND
Intheshudownmde thesuppycuren fasto
lessthan1
AwheeSHDN=LO. henthe
SP3220EEBEU
devcesshu down hedevces
dive oupu isdsabed(hghZ andthechage
pum stunedof whV+pueddowntoV
V puedtoGND Thetim requredt and
shudownistypcay100m Connec SHDNto
V
n f theshudownmdesno used SHDNhas
Noeha hedive senabed
onywhenthemgntudeo V exceedsappox-
mtey3V
CC
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