65HVS881 Series
34-V, 8-channel digital-input serializer with diagnostics
Manufacturer: Texas Instruments
Catalog(1 parts)
| Part | Supplier Device Package | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Package / Case | Function | Data Rate▲▼ | Input Type | Output Type | Mounting Type | Number of Inputs▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Number of Outputs▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
28-HTSSOP | 10 V | 34 V | 28-PowerTSSOP | Serializer | 1048576 bit/s | Parallel | Serial | Surface Mount | 8 ul | -40 °C | 125 °C | 1 ul |
Key Features
• Eight InputsHigh Input Voltage – up to 34 VSelectable Debounce Filters – 0 ms to 3 msFlexible Input Current Limit: 0.2 to 5.2 mAField Pins Protected to 15-kV HBM ESDDiagnostics:Parity CheckUndervoltage IndicationOvertemperature IndicationOutput Drivers for External Status LEDsCascadable in Multiples of Eight InputsSPI-Compatible InterfaceRegulated 5-V Output for External IsolatorAPPLICATIONSSensor Inputs for Industrial Automation and Process ControlHigh Channel Count Digital Input Modules for PC and PLC SystemsDecentralized I/O ModulesMotion Control SystemsPowerPAD is a trademark of Texas Instruments.Eight InputsHigh Input Voltage – up to 34 VSelectable Debounce Filters – 0 ms to 3 msFlexible Input Current Limit: 0.2 to 5.2 mAField Pins Protected to 15-kV HBM ESDDiagnostics:Parity CheckUndervoltage IndicationOvertemperature IndicationOutput Drivers for External Status LEDsCascadable in Multiples of Eight InputsSPI-Compatible InterfaceRegulated 5-V Output for External IsolatorAPPLICATIONSSensor Inputs for Industrial Automation and Process ControlHigh Channel Count Digital Input Modules for PC and PLC SystemsDecentralized I/O ModulesMotion Control SystemsPowerPAD is a trademark of Texas Instruments.
Description
AI
The SN65HVS881 is an eight channel, digital-input serializer for high-channel density digital input modules in industrial automation. In combination with galvanic isolators the device completes the interface between the high voltage signals on the field-side and the low-voltage signals on the controller side. Input signals are current-limited and then validated by internal debounce filters.
With the addition of a few external components, the input switching characteristics can be configured 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.
Cascading of multiple devices 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. Multiple devices can be cascaded through a single serial port, reducing both the isolation channels and controller inputs required.
Input status can be visually indicated via constant current LED outputs. The current limit on the inputs is set by a single external precision resistor. An integrated voltage regulator provides a 5V output to supply low-power isolators. An on-chip temperature sensor provides diagnostic information for graceful shutdown and system safety. An internal parity check for odd parity ensures trustworthy transmission of serial data to the system controller.
The SN65HVS881 is available in a 28-pin PWP PowerPAD™ package, allowing for efficient heat dissipation. The device is characterized for operation at temperatures from –40°C to 125°C
The SN65HVS881 is an eight channel, digital-input serializer for high-channel density digital input modules in industrial automation. In combination with galvanic isolators the device completes the interface between the high voltage signals on the field-side and the low-voltage signals on the controller side. Input signals are current-limited and then validated by internal debounce filters.
With the addition of a few external components, the input switching characteristics can be configured 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.
Cascading of multiple devices 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. Multiple devices can be cascaded through a single serial port, reducing both the isolation channels and controller inputs required.
Input status can be visually indicated via constant current LED outputs. The current limit on the inputs is set by a single external precision resistor. An integrated voltage regulator provides a 5V output to supply low-power isolators. An on-chip temperature sensor provides diagnostic information for graceful shutdown and system safety. An internal parity check for odd parity ensures trustworthy transmission of serial data to the system controller.
The SN65HVS881 is available in a 28-pin PWP PowerPAD™ package, allowing for efficient heat dissipation. The device is characterized for operation at temperatures from –40°C to 125°C