5V单芯片WAN多模式串行收发器 SP506
SP506 是一个单芯片IC，支持DTE到DCE连接的8种常见串行接口标准。SP506 与 SP505 多协议收发器管脚到管脚兼容，但具有更快的吞吐量。7个驱动器和7个接收器可以以20Mbps发送和接收信号。和SP505 一样，SP506 不需要为符合所有8种模式的操作而另外使用任何外部元件。所有必需的终端都集成在SP506内，这些终端在V.35驱动器、V.35接收器和V.11接收器被使用时可以被转接。SP506 可以作为DTE或DCE来操作。
SP506 还包括内部回送在内的一些其它特性，内部回送可以在单端或差分模式被启动。在回送模式中，驱动器输出在内部与接收器输入相连，建立一个内部信号通路以方便诊断测试。不再需要使用外部回送连接插头。SP506 还包括一个带有驱动器和接收器地址译码器的锁存使能管脚。驱动器和接收器输出的三态功能通过向地址译码器提供一个4位的字来控制。SP506 的7个驱动器和1个接收器具有独立的使能管脚，使用起来更加方便。
The SP50x family of multi-protocol transceivers are designed for applications using serial ports in networking equipment such as routers, DSU/CSUs, multiplexors, access devices, and other networking equipment. This application note discusses and illustrates various configuration options, and other helpful hints about designing with the SP505 and the newer SP506 and SP507 products.
These one-chip serial port transceiver products supports seven popular serial interface standards for Wide Area Network (WAN) connectivity. With a built-in DC-DC charge pump converter, the SP505,SP506 and SP507 operate on +5V only. The seven drivers and seven receivers can be configured via software for RS-232, X.21, EIA-530, EIA-530A, RS-449, V.35, and V.36 interface modes at any time.
Unlike other discrete solutions or other multi-chip transceivers, the SP505, SP506 and SP507 require no additional external circuitry for compliant operation other than the charge pump capacitors. All necessary resistor termination networks are integrated within the SP505, SP506 and SP507, and are switchable when in EIA-530, EIA-530A, RS-449, V.35, V.36, and X.21 modes.
The SP505, SP506 and SP507 provide individual driver disable for easy DTE/DCE configurations. The SP507 offers four receiver enable lines for even easier DTE/DCE programmability. The newer SP506 is pin compatible with the SP505 except with improved AC performance. Refer to theSP505, SP506 and SP507 datasheets for electrical parameter and configuration details.
SP506 特性
- 支持的接口模式：
－ RS-232 (V.28) X.21/RS-422 (V.11)
－ EIA-530 (V.10 &V.11) EIA-530A (V.10&V.11)
－ RS-499 (V.10 &V.11) V.35 (V.35&V.28)
－ V.36 (V.10 &V.11) RS-485 (无终端的V.11) - 软件可选的协议；
- 最大差分传输速率超过20Mbps；
- +5V单电源操作；
- 7个驱动器和7个接收器；
- 驱动器和接收器三态控制；
- V.11和V.35协议的内部收发器终端电阻；
- 回送自测试模式；
- 模拟I/O的ESD容限得到改善；
- 符合NET1/2和TBR2物理层要求；
- 用在路由器、交换机、DSU/CSU和其它接入设备的WAN串口中
相关订购信息
- SP505CF：工作温度0°C to +70°C，封装形式 80–pin JEDEC (BE-2 Outline) QFP
- SP506CF：工作温度0°C to +70°C ，封装形式 80–pin JEDEC (BE-2 Outline) QFP
- SP507CF ：工作温度0°C to +70°C ，封装形式 80–pin JEDEC (BE-2 Outline) QFP
