EEWORLDEEWORLDEEWORLD

Part Number

Search

HI9P0547-9

Description
8-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO28, PLASTIC, MS-013AE, SOIC-28
CategoryAnalog mixed-signal IC    The signal circuit   
File Size1MB,25 Pages
ManufacturerRochester Electronics
Websitehttps://www.rocelec.com/
Download Datasheet Parametric Compare View All

HI9P0547-9 Overview

8-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO28, PLASTIC, MS-013AE, SOIC-28

HI9P0547-9 Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerRochester Electronics
Parts packaging codeSOIC
package instructionPLASTIC, MS-013AE, SOIC-28
Contacts28
Reach Compliance Codeunknow
Other featuresOVERVOLTAGE PROTECTION
Analog Integrated Circuits - Other TypesDIFFERENTIAL MULTIPLEXER
JESD-30 codeR-PDSO-G28
JESD-609 codee0
length17.9 mm
Humidity sensitivity level1
Nominal Negative Supply Voltage (Vsup)-15 V
Number of channels8
Number of functions1
Number of terminals28
Nominal off-state isolation68 dB
On-state resistance matching specifications126 Ω
Maximum on-state resistance (Ron)1800 Ω
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)240
Maximum seat height2.65 mm
Nominal supply voltage (Vsup)15 V
surface mountYES
Maximum disconnect time1000 ns
Maximum connection time1000 ns
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTIN LEAD
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.5 mm

HI9P0547-9 Preview

D ts e t
aa h e
R c e t r lc r nc
o h se Ee to is
Ma u a t r dCo o e t
n fc u e
mp n n s
R c e tr b a d d c mp n ns ae
o h se rn e
o oet r
ma ua trd u ig ete dewaes
n fcue sn i r i/ fr
h
p rh s d f m te oiia s p l r
uc a e r
o h r n l u pi s
g
e
o R c e tr waes rce td f m
r o h se
fr e rae r
o
te oiia I. Al rce t n ae
h
r nl P
g
l e rai s r
o
d n wi tea p o a o teOC
o e t h p rv l f h
h
M.
P r aetse u igoiia fcoy
at r e td sn r n la tr
s
g
ts p o rmso R c e tr e eo e
e t rga
r o h se d v lp d
ts s lt n t g aa te p o u t
e t oui s o u rne
o
rd c
me t o e c e teOC d t s e t
es r x e d h
M aa h e.
Qu l yOv riw
ai
t
e ve
• IO- 0 1
S 90
•A 92 cr ct n
S 1 0 et ai
i
o
• Qu l e Ma ua trr Ls (
ai d
n fcues it QML MI- R -
) LP F
385
53
•C a sQ Mitr
ls
lay
i
•C a sVS a eL v l
ls
p c ee
• Qu l e S p l r Ls o D sr uos( L )
ai d u pi s it f it b tr QS D
e
i
•R c e trsacic l u pir oD A a d
o h se i
r ia s p l t L n
t
e
me t aln u t a dD A sa d r s
es lid sr n L tn ad .
y
R c e tr lcrnc , L i c mmi e t
o h se Ee t is L C s o
o
tdo
t
s p ligp o u t ta s t f c so r x e t-
u pyn rd cs h t ai y u tme e p ca
s
t n fr u lya daee u loto eoiial
i s o q ai n r q a t h s r n l
o
t
g
y
s p l db id sr ma ua trr.
u pi
e yn ut
y n fcues
T eoiia ma ua trr d ts e t c o a yn ti d c me t e e t tep r r n e
h r n l n fcue’ aa h e a c mp n ig hs o u n r cs h ef ma c
g
s
o
a ds e ic t n o teR c e tr n fcue v rino ti d vc . o h se Ee t n
n p c ai s f h o h se ma ua trd eso f hs e ie R c e tr lcr -
o
o
isg aa te tep r r n eo i s mio d co p o u t t teoiia OE s e ic -
c u rne s h ef ma c ft e c n u tr rd cs o h r n l M p c a
o
s
g
t n .T pc lv le aefr eee c p r o e o l. eti mii m o ma i m rt g
i s ‘y ia’ au s r o rfrn e up s s ny C r n nmu
o
a
r xmu ai s
n
ma b b s do p o u t h rceiain d sg , i lt n o s mpetsig
y e a e n rd c c aa tr t , e in smuai , r a l e t .
z o
o
n
© 2 1 R cetr l t n s LC Al i t R sre 0 1 2 1
0 3 ohs E cr i , L . lRg s eevd 7 1 0 3
e e oc
h
T l r m r, l s v iw wrcl . m
o e n oe p ae it w . e c o
a
e
s
o ec
®
HI-546, HI-547, HI-548, HI-549
Data Sheet
September 21, 2005
FN3150.5
Single 16 and 8, Differential 8-Channel
and 4-Channel CMOS Analog MUXs with
Active Overvoltage Protection
The HI-546, HI-547, HI-548 and HI-549 are analog
multiplexers with active overvoltage protection and
guaranteed r
ON
matching. Analog input levels may greatly
exceed either power supply without damaging the device or
disturbing the signal path of other channels. Active
protection circuitry assures that signal fidelity is maintained
even under fault conditions that would destroy other
multiplexers.
Analog inputs can withstand constant 70V
P-P
levels with
±15V
supplies. Digital inputs will also sustain continuous
faults up to 4V greater than either supply. In addition, signal
sources are protected from short circuiting should
multiplexer supply loss occur. Each input presents 1kΩ of
resistance under this condition. These features make the
HI-546, HI-547, HI-548 and HI-549 ideal for use in systems
where the analog inputs originate from external equipment
or separately powered circuitry. All devices are fabricated
with 44V Dielectrically Isolated CMOS technology. The
HI-546 is a single 16-Channel, the HI-547 is an 8-Channel
differential, the HI-548 is a single 8-Channel and the HI-549
is a 4-Channel differential device. If input overvoltage
protection is not needed the HI-506/507/508/509
multiplexers are recommended. For further information see
Application Notes AN520 and AN521.
For MIL-STD-883 compliant parts, request the HI-546/883,
HI-547/883, HI-548/883 and HI-549/883 datasheets.
Features
• Analog Overvoltage Protection. . . . . . . . . . . . . . . . . . 70V
P-P
• No Channel Interaction During Overvoltage
• Guaranteed r
ON
Matching
• Maximum Power Supply. . . . . . . . . . . . . . . . . . . . . . . 44V
• Break-Before-Make Switching
• Analog Signal Range . . . . . . . . . . . . . . . . . . . . . . . .
±15V
• Access Time (Typical) . . . . . . . . . . . . . . . . . . . . . . . 500ns
• Standby Power (Typical). . . . . . . . . . . . . . . . . . . . . 7.5mW
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Data Acquisition
• Industrial Controls
• Telemetry
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
HI-546, HI-547, HI-548, HI-549
Ordering Information
PART
NUMBER
HI1-0546-5
HI1-0546-2
HI3-0546-5
HI4P0546-5
HI4P0546-5Z
(Note)
HI9P0546-9**
PART
MARKING
HI1-546-5
HI1-546-2
HI3-546-5
HI4P546-5
HI4P546-5Z
HI9P546-9
TEMP.
RANGE
(
o
C)
0 to 75
PACKAGE
PKG.
DWG. #
Ordering Information
(Continued)
PART
NUMBER
HI9P0548-5**
PART
MARKING
HI9P548-5
TEMP.
RANGE
(
o
C)
0 to 75
0 to 75
-40 to 85
-40 to 85
PACKAGE
16 Ld SOIC
16 Ld SOIC
(Pb-free)
16 Ld SOIC
16 Ld SOIC
(Pb-free)
PKG.
DWG. #
M16.15
M16.15
M16.15
M16.15
28 Ld CERDIP F28.6
-55 to 125 28 Ld CERDIP F28.6
0 to 75
0 to 75
0 to 75
-40 to 85
-40 to 85
0 to 75
0 to 75
0 to 75
0 to 75
0 to 75
-40 to 85
-40 to 85
28 Ld PDIP
28 Ld PLCC
28 Ld PLCC
(Pb-free)
28 Ld SOIC
28 Ld SOIC
(Pb-free)
E28.6
HI9P0548-5Z** HI9P548-5Z
(Note)
HI9P0548-9
HI9P548-9
HI9P548-9Z
HI1-549-2
HI3-549-5
HI4P549-5
HI4P549-5Z
HI9P549-9
HI9P549-9Z
N28.45
N28.45
M28.3
HI3-0549-5
0 to 75
0 to 75
0 to 75
-40 to 85
-40 to 85
16 Ld PDIP
20 Ld PLCC
20 Ld PLCC
(Pb-free)
16 Ld SOIC
16 Ld SOIC
(Pb-free)
E16.3
N20.35
N20.35
M16.15
M16.15
M28.3
HI4P0549-5
HI4P0549-5Z
(Note)
HI9P0549-9
HI9P0548-9Z
(Note)
HI1-0549-2
-55 to 125 16 Ld CERDIP F16.3
HI9P0546-9Z** HI9P546-9Z
(Note)
HI1-0547-5
HI3-0547-5
HI3-0547-5Z
(Note)
HI4P0547-5
HI4P0547-5Z
(Note)
HI9P0547-9
HI9P0547-9Z
(Note)
HI1-0548-2
HI1-0548-5
HI3-0548-5
HI4P0548-5
HI1-547-5
HI3-547-5
HI3-0547-5Z
HI4P547-5
HI4P547-5Z
HI9P547-9
HI9P547-9Z
HI1-548-2
HI1-548-5
HI3-548-5
HI4P548-5
28 Ld CERDIP F28.6
28 Ld PDIP
28 Ld PDIP*
(Pb-free)
28 Ld PLCC
28 Ld PLCC
(Pb-free)
28 Ld SOIC
28 Ld SOIC
(Pb-free)
E28.6
E28.6
HI9P0549-9Z
(Note)
N28.45
N28.45
M28.3
M28.3
*Pb-free
PDIPs can be used for through hole wave solder processing
only. They are not intended for use in Reflow solder processing
applications.
**Add “96” suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
-55 to 125 16 Ld CERDIP F16.3
0 to 75
0 to 75
0 to 75
16 Ld CERDIP F16.3
16 Ld PDIP
20 Ld PLCC
E16.3
N20.35
Pinouts
HI-546 (CERDIP, PDIP, SOIC)
TOP VIEW
+V
SUPPLY
1
28 OUT
27 -V
SUPPLY
26 IN 8
25 IN 7
24 IN 6
23 IN 5
22 IN 4
21 IN 3
20 IN 2
19 IN 1
18 ENABLE
17 ADDRESS A
0
16 ADDRESS A
1
15 ADDRESS A
2
HI-547 (CERDIP, PDIP, SOIC)
TOP VIEW
+V
SUPPLY
1
28 OUT A
27 -V
SUPPLY
26 IN 8A
25 IN 7A
24 IN 6A
23 IN 5A
22 IN 4A
21 IN 3A
20 IN 2A
19 IN 1A
18 ENABLE
17 ADDRESS A
0
16 ADDRESS A
1
15 ADDRESS A
2
NC 2
NC 3
IN 16 4
IN 15 5
IN 14 6
IN 13 7
IN 12 8
IN 11 9
IN 10 10
IN 9 11
GND 12
V
REF
13
ADDRESS A
3
14
OUT B 2
NC 3
IN 8B 4
IN 7B 5
IN 6B 6
IN 5B 7
IN 4B 8
IN 3B 9
IN 2B 10
IN 1B 11
GND 12
V
REF
13
NC 14
2
HI-546, HI-547, HI-548, HI-549
Pinouts
(Continued)
HI-546 (PLCC)
TOP VIEW
+V
SUPPLY
-V
SUPPLY
HI-547 (PLCC)
TOP VIEW
+V
SUPPLY
-V
SUPPLY
27
OUT B
OUT A
IN 8B
IN 16
OUT
IN 8
NC
NC
4
3
2
1
28
27
26
4
3
2
1
28
IN 15 5
IN 14 6
IN 13 7
IN 12 8
IN 11 9
IN 10 10
IN 9 11
25 IN 7
24 IN 6
23 IN 5
22 IN 4
21 IN 3
20 IN 2
19 IN 1
IN 7B 5
IN 6B 6
IN 5B 7
IN 4B 8
IN 3B 9
IN 2B 10
IN 1B 11
IN 8A
26
NC
25 IN 7A
24 IN 6A
23 IN 5A
22 IN 4A
21 IN 3A
20 IN 2A
19 IN 1A
12
GND
13
V
REF
14
A
3
15
A
2
16
A
1
17
A
0
18
ENABLE
12
GND
13
V
REF
14
NC
15
A
2
16
A
1
17
A
0
19
GND
13
IN 4B
18
ENABLE
18 +V
SUPPLY
17 IN 1B
16 NC
15 IN 2B
14 IN 3B
HI-548 (CERDIP, PDIP, SOIC)
TOP VIEW
A
0
1
ENABLE 2
-V
SUPPLY
3
16 A
1
15 A
2
14 GND
13 +V
SUPPLY
12 IN 5
11 IN 6
10 IN 7
9 IN 8
HI-549 (CERDIP, PDIP, SOIC)
TOP VIEW
A
0
1
ENABLE 2
-V
SUPPLY
3
16 A
1
15 GND
14 +V
SUPPLY
13 IN 1B
12 IN 2B
11 IN 3B
10 IN 4B
9 OUT B
IN 1 4
IN 2 5
IN 3 6
IN 4 7
OUT 8
IN 1A 4
IN 2A 5
IN 3A 6
IN 4A 7
OUT A 8
HI-548 (PLCC)
TOP VIEW
ENABLE
ENABLE
HI-549 (PLCC)
TOP VIEW
NC
1
11
NC
A
0
NC
A
0
A
1
A
2
3
2
1
20
19
-V
SUPPLY
4
IN 1A 5
NC 6
IN 2A 7
IN 3A 8
3
2
20
-V
SUPPLY
4
IN 1 5
NC 6
IN 2 7
IN 3 8
18 GND
17 +V
SUPPLY
16 NC
15 IN 5
14 IN 6
IN 4A
9
IN 4
OUT A
3
OUT B
10
OUT
11
NC
12
IN 8
13
IN 7
9
10
12
A
1
HI-546, HI-547, HI-548, HI-549
TRUTH TABLE HI-546
A
3
X
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
A
2
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
A
1
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
A
0
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
EN
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
“ON” CHANNEL
None
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TRUTH TABLE HI-549
TRUTH TABLE HI-547
A
2
X
L
L
L
L
A
1
X
L
L
H
H
A
0
X
L
H
L
H
EN
L
H
H
H
H
“ON” CHANNEL PAIR
None
1
2
3
4
A
1
X
L
L
H
H
A
0
X
L
H
L
H
EN
L
H
H
H
H
“ON” CHANNEL PAIR
None
1
2
3
4
A
2
X
L
L
L
L
H
H
H
H
A
1
X
L
L
H
H
L
L
H
H
TRUTH TABLE HI-548
A
0
X
L
H
L
H
L
H
L
H
EN
L
H
H
H
H
H
H
H
H
“ON” CHANNEL
None
1
2
3
4
5
6
7
8
A
2
H
H
H
H
TRUTH TABLE HI-547 (Continued)
A
1
L
L
H
H
A
0
L
H
L
H
EN
H
H
H
H
“ON” CHANNEL PAIR
5
6
7
8
Functional Diagrams
HI-546
1K
IN 1
1K
IN 2
DECODER/
DRIVER
1K
IN 16
IN 8B
IN 8A
1K
IN 1B
1K
DECODER/
DRIVER
OUT
IN 1A
1K
OUT
B
1K
HI-547
OUT
A
OVERVOLTAGE
CLAMP AND
SIGNAL
ISOLATION
5V
REF
LEVEL
SHIFT
OVERVOLTAGE
CLAMP AND
SIGNAL
ISOLATION
5V
REF
LEVEL
SHIFT
DIGITAL INPUT
PROTECTION
† † † † †
DIGITAL INPUT
PROTECTION
V
REF
A
0
A
1
A
2
A
3
EN
V
REF
A
0
A
1
A
2
EN
4

HI9P0547-9 Related Products

HI9P0547-9 HI9P0546-9Z HI9P0549-9Z HI4P0549-5Z HI9P0548-9 HI4P0546-5Z
Description 8-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO28, PLASTIC, MS-013AE, SOIC-28 16-CHANNEL, SGL ENDED MULTIPLEXER, PDSO28, ROHS COMPLIANT, PLASTIC, MS-013AE, SOIC-28 4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PDSO16, ROHS COMPLIANT, SOIC-16 4-CHANNEL, DIFFERENTIAL MULTIPLEXER, PQCC20, ROHS COMPLIANT, PLASTIC, MS-018AA, LCC-20 8-CHANNEL, SGL ENDED MULTIPLEXER, PDSO16, SOIC-16 16-CHANNEL, SGL ENDED MULTIPLEXER, PQCC28, ROHS COMPLIANT, PLASTIC, MS-018AB, LCC-28
Is it lead-free? Contains lead Lead free Lead free Lead free Contains lead Lead free
Maker Rochester Electronics Rochester Electronics Rochester Electronics Rochester Electronics Rochester Electronics Rochester Electronics
Parts packaging code SOIC SOIC SOIC LPCC SOIC LCC
package instruction PLASTIC, MS-013AE, SOIC-28 SOP, ROHS COMPLIANT, SOIC-16 QCCJ, SOIC-16 QCCJ,
Contacts 28 28 16 20 16 28
Reach Compliance Code unknow unknown unknown unknown unknown unknow
Other features OVERVOLTAGE PROTECTION OVERVOLTAGE PROTECTION OVERVOLTAGE PROTECTION OVERVOLTAGE PROTECTION OVERVOLTAGE PROTECTION OVERVOLTAGE PROTECTION
Analog Integrated Circuits - Other Types DIFFERENTIAL MULTIPLEXER SINGLE-ENDED MULTIPLEXER DIFFERENTIAL MULTIPLEXER DIFFERENTIAL MULTIPLEXER SINGLE-ENDED MULTIPLEXER SINGLE-ENDED MULTIPLEXER
JESD-30 code R-PDSO-G28 R-PDSO-G28 R-PDSO-G16 S-PQCC-J20 R-PDSO-G16 S-PQCC-J28
JESD-609 code e0 e3 e3 e3 e0 e3
length 17.9 mm 17.9 mm 9.9 mm 8.965 mm 9.9 mm 11.505 mm
Humidity sensitivity level 1 3 3 3 1 3
Nominal Negative Supply Voltage (Vsup) -15 V -15 V -15 V -15 V -15 V -15 V
Number of channels 8 16 4 4 8 16
Number of functions 1 1 1 1 1 1
Number of terminals 28 28 16 20 16 28
Nominal off-state isolation 68 dB 68 dB 68 dB 68 dB 68 dB 68 dB
On-state resistance matching specifications 126 Ω 126 Ω 126 Ω 126 Ω 126 Ω 126 Ω
Maximum on-state resistance (Ron) 1800 Ω 1800 Ω 1800 Ω 1800 Ω 1800 Ω 1800 Ω
Maximum operating temperature 85 °C 85 °C 85 °C 75 °C 85 °C 75 °C
Minimum operating temperature -40 °C -40 °C -40 °C - -40 °C -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP QCCJ SOP QCCJ
Package shape RECTANGULAR RECTANGULAR RECTANGULAR SQUARE RECTANGULAR SQUARE
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE CHIP CARRIER SMALL OUTLINE CHIP CARRIER
Peak Reflow Temperature (Celsius) 240 260 260 NOT APPLICABLE 240 NOT APPLICABLE
Maximum seat height 2.65 mm 2.65 mm 1.75 mm 4.57 mm 1.75 mm 4.57 mm
Nominal supply voltage (Vsup) 15 V 15 V 15 V 15 V 15 V 15 V
surface mount YES YES YES YES YES YES
Maximum disconnect time 1000 ns 1000 ns 1000 ns 1000 ns 1000 ns 1000 ns
Maximum connection time 1000 ns 1000 ns 1000 ns 1000 ns 1000 ns 1000 ns
technology CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL COMMERCIAL EXTENDED INDUSTRIAL COMMERCIAL EXTENDED
Terminal surface TIN LEAD MATTE TIN MATTE TIN MATTE TIN TIN LEAD MATTE TIN
Terminal form GULL WING GULL WING GULL WING J BEND GULL WING J BEND
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL QUAD DUAL QUAD
Maximum time at peak reflow temperature NOT SPECIFIED 40 40 NOT APPLICABLE NOT SPECIFIED NOT APPLICABLE
width 7.5 mm 7.5 mm 3.9 mm 8.965 mm 3.9 mm 11.505 mm
Is it Rohs certified? incompatible conform to conform to conform to - conform to
ucos file system
Has anyone made a uCOS-II file system on ARM or other CPUs? Let's discuss it....
hades2011 Real-time operating system RTOS
Application of MSP430 MCU and GPS module interface
MSP430 microcontroller and GPS module interface application, introduces the application of 430 and GPS....
AnnyHsu Microcontroller MCU
Ask Keil questions
I am new to Keil. I would like to ask how to use this software in detail....
fighting MCU
LCD display driving principle
The last two times we introduced the basic principles of LCD operation, we introduced the characteristics of liquid crystal itself and the operating principles of TFT LCD structure itself. This time w...
simonprince Analog electronics
VCStudio usage tips
1. Check whether the brackets in the program match. Move the cursor to the brackets that need to be checked (such as curly brackets {}, square brackets [], round brackets () and angle brackets ), and ...
yipian Embedded System
Can the boys in Ginza be more graceful?
Every time I walk to the end of the corridor, the choking smell of cigarettes is suffocating. Even when no one is around, the smell of cigarettes still lingers. But that is where you have to go to the...
幸福 Talking

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1495  1742  72  52  2822  31  36  2  57  14 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号