SP3491 3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate

The SP3490 and SP3491 devices are +3.3V low power full-duplex transceivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with the Exar SP490 and SP491 devices as well as popular industry standards. The SP3490 and SP3491 feature Exar's BiCMOS process, allowing low power operation without sacrificing performance. The SP3490 and SP3491 meet the electrical specifications of the RS-485 and RS-422 serial protocols up to 10Mbps under load. The SP3491 is identical to the SP3490 with the addition of driver and receiver tri-state enable lines.

技术特性

Full Duplex RS-485 and RS-422 Transceivers
Operates from a single +3.3V supply
Interoperable with +5.0V logic
Driver/Receiver Tri-state Enable Lines
-7V to +12V Common-Mode Input Voltage Range
+200mV Receiver Input Sensitivity
Allows up to 32 transceivers on the serial bus
Compatibility with LTC491 and SN75180

订购信息 Ordering Information

器件型号	有害物质限制	最低温度	最高温度	状态	立刻购买	申请样片
SP3491CN-L		0	70	Active
SP3491CN-L/TR		0	70	Active
SP3491EN-L		-40	85	Active
SP3491EN-L/TR		-40	85	Active

技术指标

电源电压Vcc(V)	3.3
发送器数量(Tx)	1
接收器数量(Rx)	1
双工	Full
数据传输速率(kbps)	10000
静电放电ESD(KV)	2
典型关断集成元件电路(µA)	10
接收开路故障防护	Yes
接收短路故障防护	No
关断	Yes
多点节点	32

功能框图 Functional Block Diagram

应用技术支持与电子电路设计开发资源下载	版本信息	大小
SP3491 数据资料DataSheet下载:pdf	Rev.V2	2 页