Skyworks Solutions Inc. SI8382PM-IUR

Overview

SI8382PM-IUR from Skyworks Solutions is an 8-channel bipolar digital field input isolator for industrial PLC and I/O module applications. It provides 24 V sinking/sourcing inputs with integrated 2.5 kVRMS isolation, 30 ms low-pass debounce filtering on all 2 low-speed channels, and operates from 2.25–5.5 V VDD without requiring field-side power. It supports IEC 61131-2 Type 1/2/3 compliance using external resistor networks.

For engineers reviewing the SI8382PM-IUR datasheet, SI8382PM-IUR pinout, SI8382PM-IUR application, or SI8382PM-IUR equivalent, key selection considerations include channel count (2 low-speed), fixed 30 ms debounce delay, QSOP-20 package, 2.5 kVRMS safety rating, and compatibility with 24 V industrial logic interfaces in noise-prone environments.

Technical Context

The SI8382PM-IUR implements Skyworks' CMOS-based capacitive isolation with an LED emulator front end, enabling true bipolar (sinking or sourcing) 24 V input operation without field-side VDD. Each of its two low-speed channels passes through a fixed 30 ms low-pass debounce filter-plus a built-in 4 µs filter-delivering robust noise immunity for slow-switching industrial signals.

Its output interface uses flow-through configuration with eight outputs (B1–B8), where only B1 and B2 are designated as low-speed filtered channels per the ordering guide; remaining outputs are high-speed (BHx) with minimal propagation delay. The device requires no SPI configuration-debounce behavior is factory-set and non-programmable.

Key Specifications

Pinout & Package

SI8382PM-IUR is housed in a RoHS-compliant 20-pin QSOP package (5.3 mm × 10.2 mm, 0.65 mm pitch) with reinforced creepage/clearance for industrial isolation requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital field input isolator applications.

Compared with SI8382PF-IUR (10 ms) and SI8382PS-IUR (100 ms), the SI8382PM-IUR's 30 ms debounce strikes a balanced trade-off between noise rejection and timely signal capture-ideal for general-purpose industrial switch monitoring where both reliability and responsiveness matter.

Availability

SI8382PM-IUR is available at Aetrix Electronics and suitable for programmable logic controllers, industrial I/O modules, and distributed control systems requiring stable component supply, long-term lifecycle support, and certified safety isolation.

Supply support for SI8382PM-IUR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for communications, industrial, and automotive markets.

The Si838x product line was designed specifically to replace aging optocoupler-based digital inputs in industrial automation, delivering higher reliability, longer service life, and simplified system design through integrated CMOS isolation.

FAQ

What is the debounce filter delay configured for SI8382PM-IUR?

The SI8382PM-IUR features a factory-set low-pass debounce filter delay of 30 ms on its two low-speed input channels (A1 and A2). This value is fixed and non-programmable-no SPI interface or external components are required to configure it. An additional 4 µs built-in filter is always present, resulting in a total effective delay of approximately 30.004 ms. This timing is optimized for suppressing mechanical contact bounce and conducted noise in standard industrial switch applications.

Does SI8382PM-IUR require a power supply on the field side?

No, the SI8382PM-IUR does not require any power supply on the field side. Its bipolar LED emulator input architecture draws operating current directly from the 24 V field signal-whether sinking or sourcing-eliminating the need for isolated field-side VDD. Power for internal isolation circuitry and logic-side outputs is supplied solely via the VDD pin (Pin 19) on the logic side, which accepts 2.25–5.5 V.

How many input channels does SI8382PM-IUR support, and which are debounced?

The SI8382PM-IUR provides eight isolated input terminals (A1–A8), but only two of them-A1 and A2-are designated as low-speed channels with the 30 ms debounce filter enabled. The remaining six inputs (A3–A8) are high-speed channels with no filtering and typical propagation delay under 1.3 µs. This hybrid configuration allows simultaneous handling of both slow-switching controls and fast-status signals within a single 20-QSOP package.

What safety certifications apply to SI8382PM-IUR?

The SI8382PM-IUR is certified to multiple international safety standards, including UL 1577 (2500 VRMS, 1 minute), VDE 0884-10 (reinforced insulation), CSA Component Acceptance Notice 5A, IEC 62368-1, IEC 60950-1, CQC GB4943.1, and conforms to RoHS directives. These approvals validate its suitability for use in safety-critical industrial equipment requiring reinforced isolation barriers between field and logic domains.

Can SI8382PM-IUR be used in systems requiring IEC 61131-2 compliance?

Yes, the SI8382PM-IUR supports compliance with IEC 61131-2 Switch Types 1, 2, and 3 when used with appropriate external resistor networks on the field side. The datasheet provides recommended configurations for each type-including pull-up/pull-down values and voltage divider ratios-to ensure correct threshold detection, hysteresis, and response timing. Its 30 ms debounce aligns with Type 2 requirements for standard industrial digital inputs.