The SN65HVS880 is a 24-V, eight-channel, digital-input serializer for high-channel density digital input modules of PC and PLC based systems in industrial automation. In combination with galvanic isolators the device completes the interface between the 24-V sensor outputs of the field-side and the low-voltage controller inputs at the control-side. Input signals provided by EN60947-5-2 compliant 2- and 3-wire proximity switches are current-limited and then validated by internal debounce filters. The input switching characteristic is in accordance with IEC61131-2 for Type 1, 2, and 3 sensor switches.
●Upon the application of load and clock signals, input data is latched in parallel into the shift register and afterwards clocked out serially via a subsequent isolator into a serial PLC input.
●Cascading of multiple SN65HVS880 is possible by connecting the serial output of the leading device with the serial input of the following device, enabling the design of high-channel count input modules. Input status is indicated via 3-mA constant current LED outputs. An external precision resistor is required to set the internal reference current. The integrated voltage regulator provides a 5-V output to supply low-power isolators. An on-chip temperature sensor together with an internal supply voltage monitor provides a chip-okay (CHOK) indication.
●The SN65HVS880 comes in a 28-pin PWP PowerPAD package allowing for efficient heat dissipation. The device is specified for operation at temperatures from -40°C to 85°C.
● Eight Sensor Inputs
● High Input Voltage up to 30 V
● Selectable Debounce Filters From 0 ms to 3 ms
● Adjustable Current Limits From 0.2 mA to 5.2 mA
● Field Inputs and Supply Lines Protected to 15-kV HBM
● Output Drivers for External Status LEDs
● Cascadable for More Inputs in Multiples of Eight
● SPI-Compatible Interface
● Regulated 5-V Output for External Digital Isolator
● Over-Temperature and Low-Supply Voltage Indicator
● APPLICATIONS
● Sensor Inputs for Industrial Automation and Process Control
● IEC61131-2 Type 1, 2, or 3 Switches
● EN60947-5-2 Proximity Switches
● High Channel Count Digital Input Modules for PC and PLC Systems
● Decentralized I/O Modules
●PowerPAD Is a trademark of Texas Instruments
