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| 型号： | SP336ECY-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 17/30页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232/485/422 28TSSOP |
| 产品变化通告： | Packaging Change 15/Jul/2010 |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 4/4 |
| 规程： | RS232，RS422，RS485 |
| 电源电压： | 3.3 V，5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 带卷 (TR) |
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SP336E
24
3.3V / 5V PROGRAMMABLE RS-232/RS-485/RS-422 SERIAL TRANSCEIVER
REV. 1.0.1
RS-232 to RS-485 Translator
SP336E can be used to implement a single-chip RS-232 to RS-485 translator function. Both full-duplex (4-wire
RS-485) and half-duplex (2-wire RS-485) configurations are shown. RS-485 is capable of communicating on
data cables up to 4000 feet (1200 meter) which makes it an ideal interface for extending the reach of short-
range serial ports like RS-232. The configurations shown can be used to connect directly to existing PC type
RS-232 serial ports to enable extended-reach communication.
The RTS signal (circuit CA or 105) is used as a transmit direction control signal for half-duplex. The ON
condition puts the repeater into transmit mode and inhibits receive. On a half-duplex channel RxD should be
held in MARK state (binary 1) when receiver 3 is inactive. Driver 1 on the SP336E can be used to generate
DSR or CTS signal to indicate to the host terminal that the translator is powered-on and ready.
Shutdown Modes
SP336E features two shutdown modes. In mode 111 (full shutdown) all drivers and receivers are at high
impedance. In mode 110, all drivers are tri-state but all four receivers remain active. In modes 101 and 100 two
differential receivers can be kept active while the differential drivers are tri-stated using the Tx_EN inputs.
FIGURE 25. RS-232 / RS-485 TRANSLATOR FULL-DUPLEX CABLE-EXTENDER (MODE 011)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP336EET-L | 功能描述:接口 - 专用 4 Tx/Rx Programmable RS232/485/422 Serial RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| SP336EET-L | 制造商:Exar Corporation 功能描述:IC RS-232/RS-485/RS-422 TXRX 5V SOIC28 |
| SP336EET-L/TR | 功能描述:接口 - 专用 4 Tx/Rx Programmable RS232/485/422 Serial RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| SP336EEY-0A-EB | 功能描述:界面开发工具 Eval Board for SP336E Series RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| SP336EEY-L | 功能描述:接口 - 专用 4 Tx/Rx Programmable RS232/485/422 Serial RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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