1 Features

• Eight Sensor Inputs

– High Input Voltage up to 34 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

• Low-Supply Voltage Indicator

2 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

3 Description

The SN65HVS883 is a 24-V, eight-channel, digitalinput

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-wire 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 SN65HVS883 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 lowpower

isolators. An internal supply voltage monitor

provides a chip-okay (CHOK) indication.

The SN65HVS883 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.