MAX14941:5kVRMS Isolated 20Mbps Half-Duplex PROFIBUS/RS-485 Transceivers with ±35kV ESD Protection

Industry's Most Robust Isolated RS-485

The MAX14941/MAX14942 isolated RS-485/PROFIBUS-DP transceivers provide 5000VRMS (60s) of galvanic isolation between the cable-side (RS-485 driver/receiver-side) and the UART-side of the device. Isolation improves communication by breaking ground loops and reduces noise when there are large differences in ground potential between ports. These devices allow for robust communication up to 20Mbps. An integrated LDO provides a simple and space-efficient architecture for providing power to the cable side of the IC. Each device includes one half-duplex driver/receiver channel. The receiver is 1/4-unit load, allowing up to 128 transceivers on a common bus. Integrated true fail-safe circuitry ensures a logic-high on the receiver output when inputs are shorted or open. Undervoltage lockout disables the driver when cable-side or UART-side power supplies are below functional levels. The driver outputs/receiver inputs are protected from ±35kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX14941/MAX14942 are available in a wide-body 16-pin SOIC package and operate over the -40°C to +105°C temperature range.

关键特性
  • High-Performance Transceiver Enables Flexible Designs
    • Integrated LDO for Cable-Side Power
    • Compliant with RS-485 EIA/TIa-485 Standard
    • 20Mbps Maximum Data Rate
    • Allows Up to 128 Devices on the Bus
  • Integrated Protections Ensures Robust Communication
    • ±35kV ESD (HBM) on Driver Outputs/Receiver Inputs
    • 5kVRMS Withstand Isolation Voltage for 60s (VISO)
    • 1200VPEAK Maximum Repetitive Peak-Isolation Voltage (VIORM)
    • 848VRMS Maximum Working-Isolation Voltage (VIOWM)
    • > 30 Years Lifetime at Rated Working Voltage
    • Withstands ±10kV Surge per IEC 61000-4-5
    • Thermal Shutdown
MAX14941, MAX14942: Functional Diagram
MAX14941, MAX14942: Functional Diagram
应用
  • HVAC
  • 工业自动控制
  • 电表
  • 可编程逻辑控制器
数据手册DataSheet
语言下载文件备注
英文MAX14941-MAX14942.pdfRev 0; 09/2016
关键参数
Part NumberTx/RxDuplexVSUPPLY
(V)
Galvanic Isolation
(±V)
ICC
(mA)
Data Rate
(kbps)
ESD Protect.
(±kV)
Rx/Tx on BusOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminSee Notes
MAX149411Tx + 1RxHalf5500042000035128-40 to +105SOIC HYBRID (W)/16$4.00 @1k
MAX14942SOIC HYBRID (W)/16
开发工具
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX14941GWE+生产中SOIC HYBRID (W),;16引脚;SOIC H;-40°C至+105°C参考数据资料
MAX14941GWE+T生产中SOIC HYBRID (W),;16引脚;SOIC H;-40°C至+105°C参考数据资料
MAX14941-MAX14942.pdf MAX14942