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产品概述

描述

The PM8805 is a system-in-package for smart power supply of Power over Ethernet (PoE) Powered Devices (PD) and it is applicable for power level up to 99.9 W. It embeds: two active bridges and their driving circuitry, a charge pump to drive the high-side MOSFETs, the hot swap MOSFET and the interface compliant with IEEE 802.3bt.
The device performs the physical layer classification, providing the indication of successful PSE type identification. A 4-pair PSE is identified and the information is available by a dedicated matrix of Tx signals.
The device works with power either from the Ethernet cable or from an external power source such as a wall adapter, with possible prevalence of the auxiliary source with respect to the PoE.
The PM8805 is suitable to build the interface section of PoE switch mode power supplies targeting the highest conversion efficiency. It provides a PGD signal that can be used to enable a PWM controller, a DC-DC converter or an LED driver.

所有功能
Dual active bridge, hot swap MOSFETand PoE-PD interface in a system-in-package

100 V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge.

100 V, 0.1 Ω high-side N-ch hot swap MOSFET

PoE-PD single-signature interface compliant with IEEE 802.3bt / at / af

Supports 4-pair PoE applications

Supports 12 V auxiliary sources

Identifies which kind of PSE (standard or legacy) is connected with and provides successful IEEE802.3bt / at / af classification indication as a combination of the T0, T1 and T2 signals (open drain)

Smart operational modes
Programmable classification current with 3.3 ms delay.

Optional Autoclass feature

Advanced energy-saving MPS timings

Two-step hot swap current protection: DC with 1 ms delay and short-circuit with 10 us delay.

Controlled pre-charge of the output capacitor

PGD signal (open drain) to enable an external PWM controller.

Thermal shutdown protection
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	产品型号	状态	描述	类型	供应商
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-POE001V1	批量生产	以太网供电（PoE）- 符合IEEE 802.3bt标准的接口参考设计	电源和功率转换器解决方案评估板	ST	STEVAL-POE001V1 描述: 以太网供电（PoE）- 符合IEEE 802.3bt标准的接口参考设计
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-POE002V1	批量生产	5V/8A同步反激式转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计	电源和功率转换器解决方案评估板	ST	STEVAL-POE002V1 描述: 5V/8A同步反激式转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-POE003V1	批量生产	5V/20A有源钳位正向转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计	电源和功率转换器解决方案评估板	ST	STEVAL-POE003V1 描述: 5V/20A有源钳位正向转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-POE005V1	批量生产	12V/8A有源钳位正向转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计	电源和功率转换器解决方案评估板	ST	STEVAL-POE005V1 描述: 12V/8A有源钳位正向转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-POE006V1	批量生产	3.3V/20A有源钳位正向转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计	电源和功率转换器解决方案评估板	ST	STEVAL-POE006V1 描述: 3.3V/20A有源钳位正向转换器，以太网供电（PoE），符合IEEE 802.3bt标准的参考设计
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-POEL45W1	批量生产	以太网供电（PoE）45 W LED驱动器，具有支持低功耗蓝牙（BLE）的控制器参考设计	LED和一般照明解决方案评估板	ST	STEVAL-POEL45W1 描述: 以太网供电（PoE）45 W LED驱动器，具有支持低功耗蓝牙（BLE）的控制器参考设计

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	Resource title	版本	Latest update
PDF	DS12813 IEEE 802.3bt PoE-PD interface with embedded dual active bridge	2.0	02 Apr 2019	02 Apr 2019 DS12813 IEEE 802.3bt PoE-PD interface with embedded dual active bridge 2.0
PDF	DB3226 IEEE802.3bt PoE-PD interface with integrated dual-active-bridge	1.0	22 Mar 2017	22 Mar 2017 DB3226 IEEE802.3bt PoE-PD interface with integrated dual-active-bridge 1.0

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PDF	AN3373 IEEE802.3at compliant PD + PS design based on PM8803 low power, synchronous flyback PoE converter	1.0	13 Sep 2018	13 Sep 2018 AN3373 IEEE802.3at compliant PD + PS design based on PM8803 low power, synchronous flyback PoE converter 1.0
PDF	AN3387 PM8803 layout guidelines	1.0	27 Jun 2014	27 Jun 2014 AN3387 PM8803 layout guidelines 1.0

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PDF	DT0149 Power over ethernet application circuits, line surge analysis and treatment	1.1	11 May 2022	11 May 2022 DT0149 Power over ethernet application circuits, line surge analysis and treatment 1.1

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PDF	AN5207 12 V/8 A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design	2.0	20 May 2019	20 May 2019 AN5207 12 V/8 A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design 2.0
PDF	AN5190 5 V/20 A, active clamp forward converter, Power Over Ethernet (PoE) - IEEE 802.3bt compliant reference design	2.0	17 May 2019	17 May 2019 AN5190 5 V/20 A, active clamp forward converter, Power Over Ethernet (PoE) - IEEE 802.3bt compliant reference design 2.0
PDF	AN5237 High power Poe PD, 3V3 up to 20 A active clamp forward evaluation board	1.0	20 Dec 2018	20 Dec 2018 AN5237 High power Poe PD, 3V3 up to 20 A active clamp forward evaluation board 1.0
PDF	AN5174 Power over Ethernet - PD converter with 5 V 8 A output, synchronous Flyback, IEEE802.3bt standard compliant	1.0	18 Oct 2018	18 Oct 2018 AN5174 Power over Ethernet - PD converter with 5 V 8 A output, synchronous Flyback, IEEE802.3bt standard compliant 1.0

	Resource title	版本	Latest update
PDF	电源管理指南	1.2	01 Apr 2022	01 Apr 2022 电源管理指南 1.2
PDF	电源管理指南	06.2021	01 Apr 2022	01 Apr 2022 电源管理指南 06.2021

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产品型号	Marketing Status	封装	等级规格	符合RoHS级别	材料声明**
PM8805TR	批量生产	QFN 8x8x1 43L P 0.5 6 Dice pad	工业	Ecopack2	PDF XML

PM8805TR

Package:

QFN 8x8x1 43L P 0.5 6 Dice pad

Material Declaration**:

PDF XML

More Info

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系销售支持。

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	产品型号	从分销商订购	从ST订购	供货状态	ECCN (US)	ECCN (EU)	包装类型	封装	温度（ºC）		Country of Origin	Budgetary Price (US$)*/Qty
	产品型号	从分销商订购	从ST订购	供货状态	ECCN (US)	ECCN (EU)	包装类型	封装	最小值	最大值	Country of Origin	Budgetary Price (US$)*/Qty
	PM8805TR	无法联系到经销商，请联系我们的销售办事处	Free Sample Buy Direct	批量生产	EAR99	NEC	Tape And Reel	QFN 8x8x1 43L P 0.5 6 Dice pad	-	-	CHINA

PM8805TR

供货状态

批量生产

ECCN (US)

EAR99

更多信息

Budgetary Price (US$)*/Qty

(*) 建议转售单价（美元）仅用于预算用途。如需以当地货币计价的报价，请联系您当地的 ST销售办事处或我们的经销商。

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