전자부품 데이터시트 검색엔진 |
|
FSUSB31UMX 데이터시트(PDF) 10 Page - Fairchild Semiconductor |
|
FSUSB31UMX 데이터시트(HTML) 10 Page - Fairchild Semiconductor |
10 / 14 page © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FSUSB31 Rev. 1.0.8 10 Application Guidance: Meeting USB 2.0 Vbus Short Requirements In section 7.1.1 of the USB 2.0 specification, it notes that USB devices must be able to withstand a Vbus short to D+ or D- when the USB devices is either powered off or powered on. The FSUSB31 can be successfully config- ured to meet both these requirements. Power-Off Protection For a Vbus short circuit, the switch is expected to with- stand such a condition for at least 24 hours. The FSUSB31 has specially designed circuitry which pre- vents unintended signal bleed through as well as guar- anteed system reliability during a power-down, over- voltage condition. The protection has been added to the common pins (D+, D-). Power-On Protection The USB 2.0 specification also notes that the USB device should be capable of withstanding a Vbus short during transmission of data. Fairchild recommends add- ing a 100 Ω series resister between the switch VCC pin and supply rail to protect against this case. This modifi- cation works by limiting current flow back into the VCC rail during the over-voltage event so current remains within the safe operating range. In this application, the switch passes the full 5.25V input signal through to the selected output, while maintaining specified off isolation on the un-selected pins. D+ = 5.25V VCC= 3.6 V 100 Ohms FSUSB31 D- = 5.25V HSD+ HSD- Figure 21. A 100 Ω resistor in series with the VCC supply allows the FSUSB31 to withstand a Vbus short when powered up For more information, see Applications Note AN-6022 — Using the FSUSB30/FSUSB31 to Comply with USB 2.0 Fault Condition Requirements at www.fairchildsemi.com. |
유사한 부품 번호 - FSUSB31UMX |
|
유사한 설명 - FSUSB31UMX |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |