NL17SG125MU3TCG [ONSEMI]
Bus Buffer with 3-State Output;型号: | NL17SG125MU3TCG |
厂家: | ONSEMI |
描述: | Bus Buffer with 3-State Output |
文件: | 总11页 (文件大小:156K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
NL17SG125
Bus Buffer with 3-State
Output
The NL17SG125 MiniGatet is an advanced high−speed CMOS
Bus Buffer with 3−State Output in ultra−small footprint.
The NL17SG125 input structures provides protection when
voltages up to 4.6 V are applied.
http://onsemi.com
Features
MARKING
DIAGRAMS
• Wide Operating V Range: 0.9 V to 3.6 V
CC
• High Speed: t = 2.4 ns (Typ) at V = 3.0 V, C = 15 pF
PD
CC
L
• Low Power Dissipation: I = 0.5 mA (Max) at T = 25°C
SOT−953
CASE 527AE
CC
A
M
1
• 4.6 V Overvoltage Tolerant (OVT) Input Pins
• Ultra−Small Packages
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
F
= Specific Device Code
(F with 90 degree clockwise rotation)
M
= Month Code
UDFN6
1.0 x 1.0
CASE 517BX
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
M
Compliant
1
K
= Specific Device Code
(K with 270 degree clockwise rotation)
IN A
1
2
3
5
V
1
2
3
5
4
V
OE
CC
CC
M
= Month Code
IN A
GND
OE
UDFN6
1.45 x 1.0
CASE 517AQ
R
M
1
GND
OUT Y
OUT Y
4
R
= Specific Device Code
(R with 180 degree clockwise rotation)
Figure 1. SOT−953
(Top Thru View)
Figure 2. SC−88A
(Top View)
M
= Month Code
6
SC−88A
DF SUFFIX
CASE 419A
A4 M G
V
1
2
3
6
5
4
OE
CC
G
1
IN A
NC
A4 = Device Code
M
G
= Date Code*
= Pb−Free Package
OE
EN
GND
OUT Y
(Note: Microdot may be in either location)
OUT Y
IN A
*Date Code orientation and/or position may vary
depending upon manufacturing location.
Figure 3. UDFN6
Figure 4. Logic Symbol
(Top View)
FUNCTION TABLE
PIN ASSIGNMENT
A Input
OE Input
Y Output
Pin Number
SOT−953
SC−88A
UDFN6
OE
L
H
X
L
L
L
H
Z
1
2
3
4
5
6
IN A
GND
OE
OE
IN A
IN A
H
GND
OUT Y
GND
OUT Y
NC
OUT Y
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
V
V
CC
CC
V
CC
© Semiconductor Components Industries, LLC, 2014
1
Publication Order Number:
November, 2018 − Rev. 5
NL17SG125/D
NL17SG125
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
V
CC
DC Supply Voltage
DC Input Voltage
DC Output Voltage
−0.5 to +5.5
−0.5 to +4.6
V
IN
V
V
OUT
Output at High or Low State
Power−Down Mode (V = 0 V)
−0.5 to V +0.5
V
CC
−0.5 to +4.6
CC
I
DC Input Diode Current
V
< GND
< GND
OUT
−20
mA
mA
mA
mA
mA
°C
IK
IN
I
DC Output Diode Current
V
−20
OK
I
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature Range
20
OUT
I
20
CC
I
20
−65 to +150
260
GND
T
STG
T
Lead Temperature, 1 mm from Case for 10 Seconds
Junction Temperature Under Bias
Moisture Sensitivity
°C
L
T
+150
°C
J
MSL
Level 1
F
R
Flammability Rating
Oxygen Index: 28 to 34
UL 94 V−0 @ 0.125 in
V
ESD
ESD Withstand Voltage
Human Body Model (Note 2)
Machine Model (Note 3)
>2000
>100
V
I
Latchup Performance
Above V and Below GND at 125°C (Note 4)
100
mA
LATCHUP
CC
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Measured with minimum pad spacing on an FR4 board, using 10 mm−by−1 inch, 2−ounce copper trace with no air flow.
2. Tested to EIA/JESD22−A114−A.
3. Tested to EIA/JESD22−A115−A.
4. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
Characteristics
Min
0.9
0.0
Max
3.6
Unit
V
V
CC
Positive DC Supply Voltage
Digital Input Voltage
Output Voltage
V
IN
3.6
V
V
OUT
Output at High or Low State
Power−Down Mode (V = 0 V)
0.0
0.0
V
CC
V
3.6
+125
10
CC
T
A
Operating Temperature Range
Input Transition Rise or Fail Rate
−55
°C
Dt / DV
V
= 3.3 V 0.3 V
0
ns/V
CC
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
http://onsemi.com
2
NL17SG125
DC ELECTRICAL CHARACTERISTICS
T
A
=
-555C to +1255C
T
= 255C
A
Min
Max
Min
Max
Unit
Symbol
Parameter
Conditions
V
CC
(V)
V
High-Level Input
Voltage
0.9
V
V
CC
V
IH
CC
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0.9
0.7xV
0.7xV
CC
CC
0.65xV
0.65xV
1.7
0.65xV
0.65xV
1.7
CC
CC
CC
CC
2.0
2.0
V
Low-Level Input
Voltage
GND
0.3xV
GND
V
IL
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0.9
0.3xV
CC
CC
0.35xV
0.35xV
0.7
0.35xV
0.35xV
0.7
CC
CC
CC
CC
0.8
0.8
V
OH
High-Level
Output Voltage
V
=
0.75
0.75xV
0.75xV
0.75
0.75xV
0.75xV
V
I
= −20 mA
IN
IH
OH
V
or
I
I
I
I
I
= -0.3 mA
= -1.7 mA
= -3.0 mA
= -4.0 mA
= -8.0 mA
= 20 mA
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0.9
OH
OH
OH
OH
CC
CC
CC
CC
V
IL
Vcc-0.45
2.0
Vcc-0.45
2.0
2.48
2.48
OH
V
OL
Low-Level
Output Voltage
V
=
or
IL
0.1
0.25xV
0.25xV
0.45
0.1
0.25xV
0.25xV
0.45
V
I
OL
IN
IH
V
I
I
I
I
I
= 0.3 mA
= 1.7 mA
= 3.0 mA
= 4.0 mA
= 8.0 mA
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0 to 3.6
OL
OL
OL
OL
OL
CC
CC
CC
CC
V
0.4
0.4
0.4
0.4
I
IN
Input Leakage
Current
0 ≤ V ≤ 3.6 V
$0.1
$1.0
mA
IN
I
Quiescent
V
= V or GND
3.6
1.0
1.0
10.0
10.0
mA
mA
CC
IN
CC
Supply Current
I
3−State Output
Leakage Current
V
V
= V or V
IL
0.9 to 3.6
OZ
IN
IH
= 0 to 3.6 V
OUT
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
http://onsemi.com
3
NL17SG125
AC ELECTRICAL CHARACTERISTICS (Input t = t = 3.0 ns)
r
f
T
A
=
-555C to +1255C
T
A
= 25 5C
Typ
11.3
8.3
Min
Max
13.6
10.4
8.5
Min
Max
15.9
12.8
10.0
6.7
Symbol
Parameter
Test Condition
V
CC
(V)
Unit
t
,
Propagation Delay,
A to Y
C = 10 pF,
R = 1 MW
L
0.9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
PLH
L
t
PHL
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0.9
5.0
4.0
6.2
2.6
3.9
4.4
2.1
3.1
3.7
C = 15 pF,
12.6
9.6
14.7
11.5
9.3
17.0
15.2
11.2
7.1
ns
ns
ns
L
R = 1 MW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0.9
5.6
4.5
6.9
2.9
4.4
5.0
2.4
3.4
3.9
C = 30 pF,
14.5
11.3
8.2
16.3
13.6
13.1
9.2
19.6
17.5
15.9
9.6
L
R = 1 MW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
6
4
5.7
6.1
3.3
4.4
4.8
t
,
Output Enable Time,
OE to Y
C = 10 pF;
L
PZH
t
PZL
R = 100 kW
L
0.9
-
-
-
-
-
-
11.0
8.4
5.3
3.9
2.5
2.1
13.3
10.9
7.8
-
-
-
-
-
-
15.8
13.0
8.3
5.9
3.8
3
R = 5 kW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
R = 5 kW
L
R = 5 kW
L
5.5
R = 5 kW
L
3.5
R = 5 kW
L
2.7
C = 15 pF;
L
ns
R = 100 kW
0.9
-
-
-
-
-
-
12.0
9.0
5.9
4.4
2.9
2.3
14.8
11.7
8.9
6.3
3.9
3
-
-
-
-
-
-
17.0
13.8
11
L
R = 5 kW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
R = 5 kW
L
R = 5 kW
L
6.5
4.2
3.3
R = 5 kW
L
R = 5 kW
L
C = 30 pF;
L
ns
R = 100 kW
0.9
-
-
-
-
-
-
13.0
10.0
8.3
15.2
13.1
12.2
8.6
5
-
-
-
-
-
-
18.3
15.2
13.7
9.7
L
R = 5 kW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
R = 5 kW
L
R = 5 kW
L
6.1
R = 5 kW
L
3.8
5.5
R = 5 kW
L
2.9
3.8
4.2
http://onsemi.com
4
NL17SG125
AC ELECTRICAL CHARACTERISTICS (Input t = t = 3.0 ns) (continued)
r
f
T
A
=
-555C to +1255C
T
A
= 25 5C
Typ
Min
Max
Min
Max
Symbol
Parameter
Test Condition
C = 10 pF;
V
(V)
Unit
CC
t
,
Output Disable Time,
OE to Y
ns
PHZ
L
t
PLZ
R = 100 kW
L
0.9
-
-
-
-
-
-
100.4
9.1
-
-
-
-
-
-
-
-
R = 5 kW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
14.4
9.1
8.3
7.3
6.9
22.4
10.4
9
R = 5 kW
L
7.1
R = 5 kW
L
6.5
R = 5 kW
L
5.8
8.8
7.6
R = 5 kW
L
5.4
C = 15 pF;
L
ns
R = 100 kW
0.9
-
-
-
-
-
-
122.2
9.8
7.8
7.2
7
-
-
-
-
-
-
-
-
L
R = 5 kW
L
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
15.3
9.8
9.2
8.2
7.7
25.1
11.3
10.6
10.3
9.5
R = 5 kW
L
R = 5 kW
L
R = 5 kW
L
R = 5 kW
L
6.6
C = 30 pF;
L
ns
R = 100 kW
0.9
1.1 to 1.3
1.4 to 1.6
1.65 to 1.95
2.3 to 2.7
3.0 to 3.6
0 to 3.6
0
-
-
-
-
-
-
217.1
13.2
12.2
11.4
11.3
10.2
3
-
-
-
-
-
-
-
-
-
-
L
R = 5 kW
L
19.6
13.5
12.7
12.2
11.5
-
31.9
14.9
13.9
13.5
12.9
-
R = 5 kW
L
R = 5 kW
L
R = 5 kW
L
R = 5 kW
L
C
Input Capacitance
Output Capacitance
pF
pF
IN
C
V
O
= GND
3
-
-
O
C
Power Dissipation
Capacitance (Note 5)
PD
f = 10 MHz
0.9 to 3.6
-
4
-
-
-
pF
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
5. C is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
PD
Average operating current can be obtained by the equation: I
) = C ꢀ V ꢀ f + I . C is used to determine the no−load dynamic
CC(OPR
PD CC in CC PD
2
power consumption; P = C ꢀ V
ꢀ f + I ꢀ V
.
D
PD
CC
in
CC
CC
http://onsemi.com
5
NL17SG125
Figure 5. Test Circuit
Figure 6. tPLH, tPHL Waveforms
Figure 7. tPLZ, tPHZ, tPZH, tPZL Waveforms
http://onsemi.com
6
NL17SG125
ORDERING INFORMATION
Device
†
Package
Shipping
NL17SG125P5T5G
SOT−953
(Pb−Free)
8000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
3000 / Tape & Reel
NL17SG125DFT2G
SC−88A
(Pb−Free)
NLV17SG125DFT2G*
NL17SG125MU1TCG**
NL17SG125MU3TCG**
SC−88A
(Pb−Free)
UDFN6 1.45 x 1 mm
(Pb−Free)
UDFN6 1 x 1 mm
(Pb−Free)
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NLV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP
Capable.
**In Development
http://onsemi.com
7
NL17SG125
PACKAGE DIMENSIONS
SOT−953
CASE 527AE
ISSUE E
NOTES:
X
Y
D
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
A
2. CONTROLLING DIMENSION: MILLIMETERS
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH. MINIMUM LEAD THICKNESS IS THE
MINIMUM THICKNESS OF THE BASE MATERIAL.
4. DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH, PROTRUSIONS, OR GATE BURRS.
5
4
3
PIN ONE
H
E
INDICATOR
E
1
2
MILLIMETERS
DIM MIN
NOM
0.37
0.15
0.12
1.00
MAX
0.40
0.20
0.17
1.05
0.85
A
b
0.34
0.10
0.07
0.95
0.75
C
TOP VIEW
e
C
D
SIDE VIEW
E
e
0.80
0.35 BSC
HE
L
0.95
1.00
0.175 REF
1.05
5X
L
L2
L3
0.05
−−−
0.10
−−−
0.15
0.15
5X
5X
L3
L2
SOLDERING FOOTPRINT*
5X
0.35
5X
0.20
5X
b
PACKAGE
OUTLINE
0.08 X
Y
BOTTOM VIEW
1.20
1
0.35
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
http://onsemi.com
8
NL17SG125
PACKAGE DIMENSIONS
UDFN6 1.0x1.0, 0.35P
CASE 517BX
ISSUE O
NOTES:
A B
D
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.15 AND 0.20 MM FROM TERMINAL TIP.
4. PACKAGE DIMENSIONS EXCLUSIVE OF
BURRS AND MOLD FLASH.
PIN ONE
REFERENCE
E
2X
0.10
C
MILLIMETERS
DIM MIN
MAX
0.55
0.05
A
A1
A3
b
0.45
0.00
0.13 REF
2X
0.10
C
TOP VIEW
0.12
0.22
A3
D
E
e
L
1.00 BSC
1.00 BSC
0.35 BSC
0.05
C
C
A
0.25
0.30
0.35
0.40
L1
0.05
A1
SEATING
RECOMMENDED
C
SIDE VIEW
e
PLANE
SOLDERING FOOTPRINT*
05.4X8
6X
0.22
5X L
3
1
L1
1.18
6
4
6X b
1
0.35
0.53
M
M
0.10
C A B
PITCH
PKG
OUTLINE
NOTE 3
0.05
C
DIMENSIONS: MILLIMETERS
BOTTOM VIEW
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
http://onsemi.com
9
NL17SG125
PACKAGE DIMENSIONS
UDFN6 1.45x1.0, 0.5P
CASE 517AQ
ISSUE O
A
B
D
L
L
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED TERMINAL
AND IS MEASURED BETWEEN 0.15 AND
0.30 mm FROM THE TERMINAL TIP.
L1
DETAIL A
PIN ONE
REFERENCE
OPTIONAL
E
MILLIMETERS
CONSTRUCTIONS
DIM MIN
0.45
A1 0.00
MAX
0.55
0.05
A
0.10
C
EXPOSED Cu
MOLD CMPD
A2
b
0.07 REF
0.20
1.45 BSC
TOP VIEW
0.30
0.10
C
D
E
e
1.00 BSC
0.50 BSC
DETAIL B
L
L1
0.30
−−−
0.40
0.15
DETAIL B
OPTIONAL
0.05
0.05
C
C
CONSTRUCTIONS
A
MOUNTING FOOTPRINT
6X
A1
6X
SEATING
PLANE
A2
C
SIDE VIEW
e
0.30
PACKAGE
OUTLINE
6X L
1.24
3
1
DETAIL A
6X
1
0.53
0.50
PITCH
6
4
DIMENSIONS: MILLIMETERS
6X b
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
0.10 C A B
NOTE 3
C
0.05
BOTTOM VIEW
http://onsemi.com
10
NL17SG125
PACKAGE DIMENSIONS
SC−88A (SC−70−5/SOT−353)
CASE 419A−02
ISSUE L
A
NOTES:
1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. 419A−01 OBSOLETE. NEW STANDARD
419A−02.
G
4. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
5
4
3
−B−
S
INCHES
DIM MIN MAX
MILLIMETERS
MIN
1.80
1.15
0.80
0.10
MAX
2.20
1.35
1.10
0.30
1
2
A
B
C
D
G
H
J
0.071
0.045
0.031
0.004
0.087
0.053
0.043
0.012
0.026 BSC
0.65 BSC
M
M
B
D 5 PL
0.2 (0.008)
---
0.004
0.004
0.004
0.010
0.012
---
0.10
0.10
0.10
0.25
0.30
K
N
S
N
0.008 REF
0.20 REF
0.079
0.087
2.00
2.20
J
SOLDER FOOTPRINT*
C
0.50
0.0197
K
H
0.65
0.025
0.65
0.025
0.40
0.0157
1.9
0.0748
mm
inches
ǒ
Ǔ
SCALE 20:1
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
MiniGate is a trademark of Semiconductor Components Industries, LLC (SCILLC).
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
Literature Distribution Center for ON Semiconductor
19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
◊
NL17SG125/D
相关型号:
©2020 ICPDF网 联系我们和版权申明