Analog Devices Inc./Maxim Integrated

The MAX22025–MAX22028/MAX22025F–MAX22028F compact isolated RS-485/ RS-422 transceivers provide 3.5kVRMSof digital galvanic isolation between the cable-side (RS-485/RS-422 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 0.5Mbps or 16Mbps.The MAX22025–MAX22028/MAX22025F–MAX22028F feature Maxim’s proprietary AutoDirection control making these devices ideal for applications such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus.The MAX22025/MAX22027/MAX22025F/MAX22027F feature reduced slew rate drivers that minimize EMI and reduce reflections caused by improper termination of cable allowing error-free transmission up to 0.5Mbps. The MAX22026/MAX22028/MAX22026F/MAX22028F driver outputs are not slew-rate limited, allowing transmit speeds up to 16Mbps.The receiver output of the MAX22025/MAX22026/MAX22025F/MAX22026F does not follow (VA-VB) when the device is in the driverenabled state. The receiver output on the MAX22027/MAX22028/MAX22027F/ MAX22028F always follows (VA-VB).The driver outputs and receiver inputs are protected from ±10kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX22025–MAX22028/MAX22025F–MAX22028F are available in a compact 8-pin wide body SOIC package and operate over the -40°C to +85°C temperature range.ApplicationsUtility MetersIndustrial Automation EquipmentProgrammable Logic ControllersHVAC

The MAX22025–MAX22028/MAX22025F–MAX22028F compact isolated RS-485/ RS-422 transceivers provide 3.5kVRMSof digital galvanic isolation between the cable-side (RS-485/RS-422 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 0.5Mbps or 16Mbps.The MAX22025–MAX22028/MAX22025F–MAX22028F feature Maxim’s proprietary AutoDirection control making these devices ideal for applications such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus.The MAX22025/MAX22027/MAX22025F/MAX22027F feature reduced slew rate drivers that minimize EMI and reduce reflections caused by improper termination of cable allowing error-free transmission up to 0.5Mbps. The MAX22026/MAX22028/MAX22026F/MAX22028F driver outputs are not slew-rate limited, allowing transmit speeds up to 16Mbps.The receiver output of the MAX22025/MAX22026/MAX22025F/MAX22026F does not follow (VA-VB) when the device is in the driverenabled state. The receiver output on the MAX22027/MAX22028/MAX22027F/ MAX22028F always follows (VA-VB).The driver outputs and receiver inputs are protected from ±10kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX22025–MAX22028/MAX22025F–MAX22028F are available in a compact 8-pin wide body SOIC package and operate over the -40°C to +85°C temperature range.ApplicationsUtility MetersIndustrial Automation EquipmentProgrammable Logic ControllersHVAC

The MAX22025–MAX22028/MAX22025F–MAX22028F compact isolated RS-485/ RS-422 transceivers provide 3.5kVRMSof digital galvanic isolation between the cable-side (RS-485/RS-422 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 0.5Mbps or 16Mbps.The MAX22025–MAX22028/MAX22025F–MAX22028F feature Maxim’s proprietary AutoDirection control making these devices ideal for applications such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus.The MAX22025/MAX22027/MAX22025F/MAX22027F feature reduced slew rate drivers that minimize EMI and reduce reflections caused by improper termination of cable allowing error-free transmission up to 0.5Mbps. The MAX22026/MAX22028/MAX22026F/MAX22028F driver outputs are not slew-rate limited, allowing transmit speeds up to 16Mbps.The receiver output of the MAX22025/MAX22026/MAX22025F/MAX22026F does not follow (VA-VB) when the device is in the driverenabled state. The receiver output on the MAX22027/MAX22028/MAX22027F/ MAX22028F always follows (VA-VB).The driver outputs and receiver inputs are protected from ±10kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX22025–MAX22028/MAX22025F–MAX22028F are available in a compact 8-pin wide body SOIC package and operate over the -40°C to +85°C temperature range.ApplicationsUtility MetersIndustrial Automation EquipmentProgrammable Logic ControllersHVAC

The MAX22025–MAX22028/MAX22025F–MAX22028F compact isolated RS-485/ RS-422 transceivers provide 3.5kVRMSof digital galvanic isolation between the cable-side (RS-485/RS-422 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 0.5Mbps or 16Mbps.The MAX22025–MAX22028/MAX22025F–MAX22028F feature Maxim’s proprietary AutoDirection control making these devices ideal for applications such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus.The MAX22025/MAX22027/MAX22025F/MAX22027F feature reduced slew rate drivers that minimize EMI and reduce reflections caused by improper termination of cable allowing error-free transmission up to 0.5Mbps. The MAX22026/MAX22028/MAX22026F/MAX22028F driver outputs are not slew-rate limited, allowing transmit speeds up to 16Mbps.The receiver output of the MAX22025/MAX22026/MAX22025F/MAX22026F does not follow (VA-VB) when the device is in the driverenabled state. The receiver output on the MAX22027/MAX22028/MAX22027F/ MAX22028F always follows (VA-VB).The driver outputs and receiver inputs are protected from ±10kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX22025–MAX22028/MAX22025F–MAX22028F are available in a compact 8-pin wide body SOIC package and operate over the -40°C to +85°C temperature range.ApplicationsUtility MetersIndustrial Automation EquipmentProgrammable Logic ControllersHVAC

The MAX22025–MAX22028/MAX22025F–MAX22028F compact isolated RS-485/ RS-422 transceivers provide 3.5kVRMSof digital galvanic isolation between the cable-side (RS-485/RS-422 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 0.5Mbps or 16Mbps.The MAX22025–MAX22028/MAX22025F–MAX22028F feature Maxim’s proprietary AutoDirection control making these devices ideal for applications such as isolated RS-485 ports, where the driver input is used in conjunction with the driver-enable signal to drive the differential bus.The MAX22025/MAX22027/MAX22025F/MAX22027F feature reduced slew rate drivers that minimize EMI and reduce reflections caused by improper termination of cable allowing error-free transmission up to 0.5Mbps. The MAX22026/MAX22028/MAX22026F/MAX22028F driver outputs are not slew-rate limited, allowing transmit speeds up to 16Mbps.The receiver output of the MAX22025/MAX22026/MAX22025F/MAX22026F does not follow (VA-VB) when the device is in the driverenabled state. The receiver output on the MAX22027/MAX22028/MAX22027F/ MAX22028F always follows (VA-VB).The driver outputs and receiver inputs are protected from ±10kV electrostatic discharge (ESD) to GNDB on the cable side, as specified by the Human Body Model (HBM). The MAX22025–MAX22028/MAX22025F–MAX22028F are available in a compact 8-pin wide body SOIC package and operate over the -40°C to +85°C temperature range.ApplicationsUtility MetersIndustrial Automation EquipmentProgrammable Logic ControllersHVAC

The MAX22088 Home Bus System (HBS) compatible transceiver can be used in the Home Bus System, where data and power are passed on a single pair of wires, while minimizing the need for external components. The MAX22088 eliminates the large external AC-blocking inductor typically required in bus powered applications and improves the signal quality to allow for longer cables. Additionally, the MAX22088 features an integrated 5V linear regulator to power system loads up to 70mA (max).The MAX22088 supports passing data with speed up to 200kbps. The MAX22088 features dynamic cable termination to improve the signal quality for applications with high data rates.Additional features include adjustable receiver hysteresis, receiver thresholds and driver slew rate allow the MAX22088 to be used in a wide variety of systems.Integrated protection (IEC 61000-4-2 ±8kV Contact and ±15kV Air-Gap ESD) ensures robust communication in harsh industrial environments. The MAX22088 is specified for operation over the -40°C to +105°C temperature range and is available in a compact 24-pin 4mm x 4mm TQFN package.ApplicationsHVACData over Power ApplicationsDigital SignageRemote Monitoring and Sensing

The MAX221E is a +5V powered, single transmit/receive RS-232 and V.28 communications interface with automatic shutdown/wake-up features and high data rate capabilities.The MAX221E features enhanced electrostatic discharge (ESD) protection. Both the transmitter output and receiver input are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge Method, to ±8kV using the IEC 1000-4-2 Contact Discharge Method, and to ±15kV using the Human Body Model.The MAX221E achieves a low 1µA supply current with Maxim's revolutionary AutoShutdown™ feature. AutoShutdown saves power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected or when the transmitter of the connected peripheral is off. The MAX221E wakes up and drives the active-low INVALID pin high when an active RS-232 cable is connected, signaling the host that a peripheral is connected to the communications port.The MAX221E is available in a 16-pin SSOP package as well as a 16-pin TSSOP that uses 50% less board space than a 16-pin SO.ApplicationsIndustrial SystemsMaintenance/Diagnostic PortsSet-Top BoxesTelecommunications