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STHS4257L中文資料

廠家型號 | STHS4257L |
文件大小 | 197.19Kbytes |
頁面數(shù)量 | 18頁 |
功能描述 | IEEE 802.3af PoE Powered Device (PD) interface controller with integrated signature resistor IEEE 802.3af PoE Powered Device(PD) interface controller with integrated signature resistor |
數(shù)據(jù)手冊 | |
簡稱 | STMICROELECTRONICS【意法半導(dǎo)體】 |
生產(chǎn)廠商 | STMicroelectronics |
中文名稱 | 意法半導(dǎo)體集團(tuán)官網(wǎng) |
LOGO |
STHS4257L數(shù)據(jù)手冊規(guī)格書PDF詳情
Summary description
The STHS4257 is an IEEE802.3af-compliant family of interface controllers for Power over Ethernet (PoE) Powered Device (PD) applications. The devices consist of two main sections:
● The IEEE802.3af interface to the PoE powered RJ-45 wall socket, and
● the Hot Swap Controller (HSC) functions required to protect the PD during insertion, operation, and withdrawal from the RJ-45 socket.
These devices have an integrated high voltage power MOSFET (low-side switch) with low RON and the capability to accept transients as high as 100V. Since the pins (such as GND and VIN) which interface to the RJ-45 socket can routinely see high peak voltages in excess of 100V, it is strongly recommended that board designers protect the PD device with a transient voltage suppressor, such as the SMAJ58A (available from STMicroelectronics), connected between the GND and VIN pins (see Figure 4 on page 8).
Features
■ IEEE 802.3af-compliant interface for Powered Devices (PDs)
■ Integrated 100V, 450mA power MOSFET low side switch
■ Inrush current limit
■ Normal operation current limit
■ Integrated 25kΩ signature resistor
■ Signature disable (STHS4257A1/L1)
■ Resistor-programmable classification current (Class 0-4)
■ Power Good output, open drain
■ Undervoltage Lockout (UVLO)
■ Thermal overload protection (two-step for the STHS4257A/L)
■ Latch (L) or auto-retry (A) after repetitive thermal overload
■ Industrial temperature range: –40 to +85°C
■ SO8 and DFN8 (3mm x 3mm) packages
■ RoHS compliant
Applications
■ Voice over IP (VoIP) phones
■ Web cameras
■ WLAN access points
■ Internet appliances
■ POS terminals
■ RFID readers
STHS4257L產(chǎn)品屬性
- 類型
描述
- 型號
STHS4257L
- 制造商
STMICROELECTRONICS
- 制造商全稱
STMicroelectronics
- 功能描述
IEEE 802.3af PoE Powered Device(PD) interface controller with integrated signature resistor
供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
---|---|---|---|---|---|---|---|
STMicroelectronics |
25+ |
144-LFBGA |
9350 |
獨立分銷商 公司只做原裝 誠心經(jīng)營 免費試樣正品保證 |
|||
STMicroelectronics |
2024 |
7047 |
全新、原裝 |
||||
ST |
2450+ |
BGA196 |
6540 |
只做原廠原裝正品終端客戶免費申請樣品 |
|||
ST/意法 |
2324+ |
- |
78920 |
二十余載金牌老企,研究所優(yōu)秀合供單位,您的原廠窗口 |
|||
ST(意法) |
23+ |
144-FBGA |
15000 |
專業(yè)幫助客戶找貨 配單,誠信可靠! |
|||
ST(意法) |
24+ |
144-FBGA |
32000 |
全新原廠原裝正品現(xiàn)貨,低價出售,實單可談 |
|||
ST(意法半導(dǎo)體) |
24+ |
HU3PAK |
7350 |
現(xiàn)貨供應(yīng),當(dāng)天可交貨!免費送樣,原廠技術(shù)支持!!! |
|||
24+ |
N/A |
54000 |
一級代理-主營優(yōu)勢-實惠價格-不悔選擇 |
||||
ST/意法半導(dǎo)體 |
25+ |
原廠封裝 |
10280 |
原廠授權(quán)代理,專注軍工、汽車、醫(yī)療、工業(yè)、新能源! |
|||
ST/意法半導(dǎo)體 |
25+ |
原廠封裝 |
9999 |
STHS4257L 資料下載更多...
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Datasheet數(shù)據(jù)表PDF頁碼索引
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STMicroelectronics 意法半導(dǎo)體集團(tuán)
意法半導(dǎo)體 (STMicroelectronics) 成立于1987年,總部位于瑞士日內(nèi)瓦和法國巴黎,是一家全球領(lǐng)先的半導(dǎo)體公司。意法半導(dǎo)體專注于設(shè)計、制造和銷售各種半導(dǎo)體解決方案,產(chǎn)品廣泛應(yīng)用于汽車、工業(yè)、消費電子、通信等領(lǐng)域。 意法半導(dǎo)體的產(chǎn)品包括微控制器、模擬集成電路、功率半導(dǎo)體、傳感器等。公司擁有多個研發(fā)中心和生產(chǎn)基地,致力于技術(shù)創(chuàng)新和研發(fā)投入。意法半導(dǎo)體在全球范圍內(nèi)擁有廣泛的客戶群和合作伙伴,為客戶提供高品質(zhì)的產(chǎn)品和解決方案。 公司的使命是通過半導(dǎo)體技術(shù)推動智能化和可持續(xù)發(fā)展,助力客戶取得成功。意法半導(dǎo)體不僅注重商業(yè)成功,還注重社會責(zé)任、環(huán)境保護(hù)和可持續(xù)經(jīng)營。企業(yè)價值觀包括創(chuàng)新、尊重