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參數(shù)資料
| 型號： | MIC2551AYML25 TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 10/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC USB TRANSCEIVER 14-MLF |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | USB 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 1/1 |
| 規(guī)程： | USB 2.0 |
| 電源電壓： | 4 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-VFQFN 裸露焊盤，14-MLF? |
| 供應(yīng)商設(shè)備封裝： | 14-MLF?（2.5x2.5） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 1113 (CN2011-ZH PDF) |
| 其它名稱： | 576-2664-6 |
March 2010
9
M9999-030810
MIC2551A-2.5
Micrel, Inc.
PCB Layout Recommendations
Although the USB standard and applications are not based in
an impedance-controlled environment, a properly designed
PCB layout is recommended for optimal transceiver perfor-
mance. The suggested PCB layout hints are as follows:
Match signal line traces (VP/VM, D+, D–) to
40ps, approximately one-third inch if possible.
FR-4 PCB material propagation is about 150ps/
inch, so to minimize skew try to keep VP/VM,
D+/D– traces as short as possible.
For every signal line trace width (w), separate
the signal lines by 1.5 – 2 widths. Place all other
traces at >2 widths from all signal line traces.
Maintain the same number of vias on each dif-
ferential trace, keeping traces approximately at
same separation distance along the line.
Control signal line impedances to ±10%.
Keep RS as close to the IC as possible, with
equal distance between RS and the IC for both
D+ and D–.
Configuration Mode
VBUS/VTRM
VIF
Notes
Normal
Connected
Normal supply configuration and operation.
Disconnect (D+/D-
sharing)
Open
Connected
VP/VM are HIGH outputs, RCV is LOW.
With OE# = 0 and SUS = 1, data lines may be driven with external
devices up to 3.6V.
With D+, D- floating, IIF draws less than 1A.
Disconnect
Ground
Connected
VP/VM are HIGH outputs, RCV is LOW.
With D+, D- floating, IIF draws less than 1A.
Disable Mode
Connected
Open
Logic controlled input pins are Hi-Z. No communication is possible
until interface voltage is restored.
Unpowered
Connected
Ground
Inoperative
Table 1. Power Supply Configuration
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MIC2551AYML-TR | 功能描述:1/1 Transceiver Half USB 2.0 16-MLF? (4x4) 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):停產(chǎn) 類型:收發(fā)器 協(xié)議:USB 2.0 驅(qū)動器/接收器數(shù):1/1 雙工:半 接收器滯后:200mV 數(shù)據(jù)速率:12Mbps 電壓 - 電源:4 V ~ 5.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商器件封裝:16-MLF?（4x4） 標(biāo)準(zhǔn)包裝:1 |
| MIC2551AYTS | 功能描述:USB 接口集成電路 USB Transceiver - Lead Free RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| MIC2551AYTS TR | 功能描述:USB 接口集成電路 USB Transceiver - Lead Free RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| MIC2551BML | 制造商:Micrel Inc 功能描述:USB Transceiver 1TR 12Mbps 16-Pin MLF EP 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC2551BMLTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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