 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
SP322 데이터시트(PDF) 11 Page - Sipex Corporation |
|
|
|||||||||||||||||||||||||||||
SP322 데이터시트(HTML) 11 Page - Sipex Corporation |
|
|
11 / 14 page  SP322DS/06 SP322 V.11/V.35 Serial Transceiver © Copyright 1997 Sipex Corporation Rev. 7/9/03 SP322 V.11/V.35 Serial Transceiver © Copyright 2003 Sipex Corporation 11 Termination Circuitry Unique to Sipex, the SP322 provides internal resistor networks for V.35 as well as the cable termination for V.11. The resistor network for the V.35 receivers are configured as a typical V.35 receiver using two 51 Ω resistors in series tied to the A and B inputs with a 124 Ω center-tap resistor to ground. The network is internally switched on during V.35 mode (V.11/V.35 = V CC) using high performance, low rON transis- tors. The transistors can operate efficiently over +7V to -7V, and can tolerate over +10V to -10V without damage. This termination provides the proper V.35 receiver input impedance of 100 Ω and short-circuit impedance at 2V of 150 Ω with 10% accuracy. The configuration for the V.11 receiver input resistor network is similar to the V.35 network except that the 124 Ω resistor is disconnected (V.11/V.35 = 0V). A series resistor is also added increase the input impedance to over 120 Ω for the V.11 cable termination. The minimum resistance per the ITU V.11 specifica- tion is 100 Ω. The V.11 termination can be switched off using the V.11_TERM pin. For a terminated V.11 receiver, this pin is at a logic "1". A logic "0" will inform the switches to disconnect the V.11 termination. Shutdown The SP322 includes a shutdown pin (SD) which disables the charge pump and all power con- suming circuitry to provide low I CC. A logic "1" to the SD pin will shut down the SP322 where it will draw less than 20 µA of current. NET1/2 European Compliancy As with all of Sipex's previous multi-protocol transceiver ICs, the SP322 drivers and receivers have been designed to meet all electrical specifications for ITU V.11 and V.35. Furthermore, it is internally tested and will pass the NET1/2 physical layer testing requirements. Please note that although the SP322 adheres to NET1/2 testing, any complex or unusual configuration should be double-checked to ensure NET compliance. Consult factory for details. Applications Information The SP322 is designed for serial port applica- tions needing V.11 and V.35 transceivers. The SP322 supports a variety of physical layer protocols such as EIA-530, EIA-530A, RS-449, and V.36 where V.11 transceivers are used for clock and data signals. The termination resistors are recommended for crosstalk and reflections elimination under higher speed operation. Internal termination solves many headaches and configuration hassles with implementing V.11 and V.35. The SP322 provides a simple, low- cost solution for the clock and data lines for synchronous serial ports. The handshaking lines such as CTS, DTR, etc. can be implemented using discrete RS-422 or RS-232 transceivers, depending on the mode supported. Sipex supplies either differential (V.11) or single- ended (V.28) discrete transceiver products to mate with the SP322. |
|
|
링크 URL |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크 투 데이터시트 | 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 |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
