Product Highlights

? Software Configurable

? Eight Inputs Individually Configurable as Sink or

Source

? Type 1/3, Type 2, TTL and Hi-Z (HTL) Modes

? Wide Resistor-Settable Accurate Input Current

Ranging from 0.5mA to 6.75mA

? Programmable Glitch Filters

? Extensive Diagnostics (Supply Voltage

Monitoring, Temperature Alarms, PCB Fault

Alarms, Thermal Shutdown)

? Optional 16-bit Down-Counter Mode per Input

? Addressable or Daisy-Chain SPI to Reduce

Isolation Channels

? Robust Solution

? IEC 61000-4-2 ESD Airgap ±15kV and Contact

±8kV with Minimum 680Ω Pulse Resistor at Field

Inputs

? IEC 61000-4-5 Surge ±1.2kV/42Ω with Minimum

680Ω Pulse Resistor at Field Inputs

? Cyclic Redundancy Check (CRC) Error Detection

on SPI

? -40°C to +125°C Operating Temperature

? Low-Power Dissipation

? Operates from 8V to 36V Field Supply

? Low-Supply Current 2mA Maximum

? Compact Solution

? Integrated 5V, 20mA Linear Regulator

? 2.5V to 5.5V Logic Interface

? LED Driver Matrix or GPO Outputs

? 5mm x 5mm 32-Pin TQFN Package

Key Applications

? Programmable Logic Controllers

? Factory Automation

? Process Control

The MAX22196 is an industrial octal digital input that

translates eight industrial 24V or TTL level inputs to logic

level outputs. The device has a serial interface allowing

configuration and reading of serialized data through SPI.

The input channels are individually configurable as

sinking (p-type) or sourcing (n-type) inputs. Current

limiters on each digital input minimize power dissipation

while ensuring compliance with the IEC 61131-2

standard. With a single current-setting resistor, the

inputs are individually configurable for Type 1/3, Type 2,

TTL or HTL (high-impedance 24V levels). The current

sinks or sources can be individually disabled.

Every input channel has a programmable

glitch/debounce filter, and every input channel has an

optional 16-bit down-counter.

The MAX22196 can be powered from a field supply from

8V up to 36V for sink/source operation and has an

integrated 5V linear regulator that can provide up to

20mA of load current.