www.德州仪器.com
APPLICATIONINFORMATION
manufacturercross-referencedata
1
2
3
4
8
7
6
5
V
I
GND1
GND2
GND2
NC
V
O
GND2
IL710
hcpl-xxxx
分开
1
1
1
2
2
2
3
3
3
4
4
4
8
8
8
7
7
7
6
6
6
5
5
5
V
CC1
V
DD1
V
DD1
V
DD1
NC
在
V
I
V
I
V
CC1
V
DD1
*
GND1
GND1
GND1
V
CC2
V
DD2
V
DD2
V
DD2
V
OE
输出
V
O
V
O
GND2
GND2
GND2
ISO721
ISO721M
ADuM1100
分开
分开
分开
V
CC1
输入
在
3
6
输出
输出
GND2
GND1
0.1 F
0.001 F
0.001 F
ISO721
或者 iso721m
0.1 F
V
CC2
1
8
4
5
2
7
iso721,iso721m
SLLS629A–JANUARY2006–REVISEDJANUARY2006
theiso721andiso721misolatorshavethesamefunctionalpin-outasmostothervendors,andtheyareoften
管脚-为-pindrop-inreplacements.thenotabledifferencesintheproductsarepropagationdelay,signalingrate,
powerconsumption,andtransientprotectionrating.Table1isusedasaguideforreplacingotherisolatorswith
theiso72xxfamilyofsinglechannelisolators.
figure15.pincrossreference
table1.crossreference
ISOLATORPIN1PIN2PIN3PIN4PIN5PIN6PIN7PIN8
ISO721
(1)(2)
V
CC1
INV
CC1
GND1GND2OUTGND2V
CC2
ADuM1100
(1)(2)
V
DD1
V
I
V
DD1
GND1GND2V
O
GND2V
DD2
*Leave
hcpl-xxxxv
DD1
V
I
GND1GND2V
O
NCV
DD2
打开
(3)
IL710V
DD1
V
I
NC
(4)
GND1GND2V
O
V
OE
V
DD2
(1)theiso721andiso721mpin1andpin3areinternallyconnectedtogether.eitherorbothmaybeusedasv
CC1
.
(2)theiso721andiso721mpin5andpin7areinternallyconnectedtogether.eitherorbothmaybeusedasgnd2.
(3)pin3ofthehcpldevicesmustbeleftopen.thisisnotaproblemwhensubstitutinganiso721oriso721mdevicesincetheextra
V
CC1
onpin3maybeleftanopencircuitaswell.
(4)pin3oftheil710mustnotbetiedtogroundonthecircuitboardsincethisshortstheiso721andiso721mv
CC1
toground.theil710
pin3mayonlybetiedtoV
CC
orleftopentodropinaniso721oriso721m.
figure16.basicapplicationcircuit
14
SubmitDocumentationFeedback
: 点此下载
