厂商：Freescale
类别：16位单片机
类别：i.MX应用处理器
厂商：Linear
类别：RS232/RS562 收发器
厂商：Skyworks
类别：切换开关
类别：Circulators / Isolators
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特点LTC1321: 2-EIA562/RS232 Transceivers/2-RS485 TransceiversLTC1322: 4-EIA562/RS232 Transceivers/2-RS485 TransceiversLTC1335: 4-EIA562 Transceivers/2-RS485 Transceivers with OELTC1321/LTC1322 Have the Same Pinout as SP301/SP302LTC1335 Features Receiver Three-State OutputsLow Supply Current: 1mA Typical15μA Supply Current in Shutdown120kBaud in EIA/TIA-562 or RS232 Mode10MBaud in RS485/RS422 ModeSelf-Testing Capability in Loopback ModePower-Up/Down Glitch-Free OutputsDriver Maintains High Impedance in Three-State, Shutdown or With Power OffThermal Shutdown ProtectionI/O Lines Can Withstand ±25VWithstands Repeated 10kV ESD Pulses典型应用描述Please download the following Change Notice concerning SOIC, PDIP and CERDIP Wide Body Packages. sntopm.pdfThe LTC1321/LTC1322/LTC1335 are low power CMOS bidirectional transceivers, each featuring two reconfigurable interface ports. Each can be configured as two RS485 differential ports, as two single-ended ports, or as one RS485 differential port and one single-ended port. The LTC1321/LTC1322 can provide RS232 or EIA562 compatible single-ended outputs; the LTC1335 provides EIA562 compatible outputs and additionally includes an output enable pin, allowing the receiver logic level outputs to be three-stated.The RS232/EIA562 transceivers operate to 120kbaud and are in full compliance with EIA/TIA-562 specification. The RS485 transceivers operate to 10Mbaud and are in full compliance with RS485 and RS422 specifications. All interface drivers feature short-circuit and thermal shutdown protection. An enable pin allows RS485 driver outputs to be forced into high impedance which is maintained even when the outputs are forced beyond supply rails or power is off. Both driver outputs and receiver inputs feature ±10kV ESD protection. A loopback mode connects the driver outputs back to the receiver inputs for diagnostic self-test.The LTC1321/LTC1322 can support RS232 voltage levels when 6.5V /= –10V. The LTC1335 supports receiver output enable but not RS232 levels. A shutdown mode reduces the IM CC supply current to 15μA.