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.