My Inquiry
My Account
Skyworks Solutions Inc. SI8384PM-IUR
- Part No.:
- SI8384PM-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8384PM-IUR.pdf
- Description:
- DGTL ISO 2500VRMS 8CH GP 20QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,754
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI8384PM-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 CMOS isolation, 30 ms low-pass debounce filtering per channel, and 2.25–5.5 V output-side VDD operation. No VDD is required on the field side.
For engineers reviewing the SI8384PM-IUR datasheet, SI8384PM-IUR pinout, SI8384PM-IUR application, or SI8384PM-IUR equivalent, this device supports IEC 61131-2 Type 1/2/3 compliance, offers flow-through parallel outputs with fixed 30 ms filtering, and delivers high CMTI (300 kV/μs) in a QSOP-20 package for noise-immune industrial signal acquisition.
Technical Context
The SI8384PM-IUR implements Skyworks' CMOS-based capacitive isolation with LED emulator front-end architecture, enabling true bipolar (sinking or sourcing) 24 V input operation without field-side power. Each of its eight input channels drives an OOK modulator across the isolation barrier, with output signals routed directly to parallel pins-no SPI interface or per-channel configuration.
All eight channels are low-speed and feature factory-configured 30 ms low-pass debounce filtering (plus inherent 4 µs filter), compliant with IEC 61131-2 switch types 1, 2, and 3. The device operates with undervoltage lockout (UVLO) protection and requires only a 0.1 µF VDD–GND bypass capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Channels | 8 independent bipolar digital inputs for 24 V industrial logic |
| Isolation Rating | 2.5 kVRMS withstand voltage per UL 1577, VDE 0884-10, CSA 5A |
| Debounce Filter | Fixed 30 ms low-pass filter per channel (plus 4 µs built-in) |
| Input Current | 1 mA typical at 24 V - enables direct connection to standard PLC field wiring |
| VDD Range | 2.25–5.5 V - compatible with 2.5 V, 3.3 V, and 5 V MCU interfaces |
| CMTI | 300 kV/μs - ensures robust operation in electrically noisy industrial environments |
| Propagation Delay | Typical 1.2 µs (max 2.5 µs) - supports up to 2 Mbps data rate with deterministic timing |
Pinout & Package
SI8384PM-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 safety standards. Pin numbering follows standard QSOP orientation with Pin 1 marked by dot or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Field-side input anodes | Accept 24 V sinking or sourcing current; no VDD required on field side |
| COM | Field-side common return | Shared reference for all eight input channels; connects to field ground or supply rail |
| B1–B8 | Logic-side output drivers | Flow-through parallel outputs; active-high, 2.25–5.5 V compatible, ~50 Ω impedance |
| VDD | Logic-side supply | Power for isolation barrier receiver and output stage; requires 0.1 µF local bypass |
| GND | Logic-side ground | Reference for VDD and output logic levels; must be isolated from field-side COM |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar 24 V input interface | Supports both sinking and sourcing field wiring without external power or polarity reversal |
| Integrated 2.5 kVRMS isolation | Eliminates need for discrete optocouplers or isolated power supplies in PLC backplanes |
| Factory-set 30 ms debounce | Reduces mechanical contact bounce and EMI-induced false triggers in relay and sensor inputs |
| No field-side VDD required | Lowers system BOM cost and simplifies field-side PCB layout and component count |
| IEC 61131-2 Type 1/2/3 compliance | Enables drop-in use in certified industrial controllers without custom resistor network design |
Applications
| Programmable Logic Controllers (PLCs) | Industrial I/O Modules |
|---|---|
|
Use Scenario: Digital input card in modular PLC chassis receiving signals from limit switches, pushbuttons, and proximity sensors. IC Role / Device Role / Timing Role: Isolated field-to-controller interface converting 24 V industrial signals into clean, debounced 3.3 V logic-level inputs for the main CPU. Use Value: 30 ms fixed debounce eliminates need for software polling or external RC filters, reducing firmware complexity and improving scan cycle determinism. |
Use Scenario: DIN-rail mounted remote I/O unit acquiring status from distributed field devices across factory floor. IC Role / Device Role / Timing Role: Eight-channel galvanic barrier providing safe, noise-immune signal conditioning between hazardous field zones and control room networks. Use Value: 2.5 kVRMS isolation and 300 kV/μs CMTI ensure reliable operation near VFDs, welders, and motor starters without signal corruption. |
| Distributed Control Systems (DCS) | Motion Control Systems |
|
Use Scenario: Input acquisition node in redundant DCS architecture monitoring valve positions and safety interlocks. IC Role / Device Role / Timing Role: Safety-rated digital input conditioner meeting SIL-2 requirements via certified isolation and predictable propagation delay. Use Value: UL/VDE/GB4943.1 certifications simplify end-system safety certification and reduce time-to-market for critical infrastructure. |
Use Scenario: Feedback interface in servo drive cabinet capturing encoder zero-mark pulses and emergency stop signals. IC Role / Device Role / Timing Role: High-reliability input isolator rejecting fast transients induced by high di/dt motor switching events. Use Value: 300 kV/μs CMTI and 2.5 kVRMS withstand prevent false triggering during IGBT commutation, ensuring motion integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital field input isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8384PF-IU | Same 8-channel parallel interface but with 10 ms debounce (vs. 30 ms) | Better suited for faster-response applications like encoder index detection where shorter latency is critical | Select SI8384PF-IU when mechanical switch bounce is minimal and sub-15 ms response is required |
| SI8384PS-IU | Same 8-channel parallel interface but with 100 ms debounce (vs. 30 ms) | Optimized for highly noisy environments with long cable runs or unshielded wiring where aggressive filtering is needed | Select SI8384PS-IU when interfacing with legacy electromechanical relays or in high-EMI welding cells |
Compared with SI8384PM-IUR, SI8384PF-IU reduces total input-to-output latency by ~20 ms for time-critical edge detection, while SI8384PS-IU adds 70 ms of additional filtering margin to suppress sustained line noise - all three share identical pinout, isolation rating, and power requirements.
Availability
SI8384PM-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 SI8384PM-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 high-reliability industrial, automotive, and communications markets.
The Si838x family was designed specifically to replace aging optocoupler-based digital input stages in industrial automation equipment, delivering higher reliability, longer service life, and simplified system-level certification.
FAQ
What is the debounce filter configuration of SI8384PM-IUR?
The SI8384PM-IUR features a factory-configured 30 ms low-pass debounce filter on all eight input channels, plus an inherent 4 µs filter. This fixed setting is optimized for standard industrial switch and relay inputs per IEC 61131-2 Type 1/2/3. Unlike SPI variants, SI8384PM-IUR does not support runtime reconfiguration - the 30 ms value is hardwired at manufacture.
Does SI8384PM-IUR require a power supply on the field side?
No, SI8384PM-IUR does not require any power supply on the field side. Its bipolar LED emulator input draws only ~1 mA from the 24 V source to power the isolation transmitter, eliminating the need for isolated DC-DC converters or auxiliary field-side rails - a key advantage over optocoupler-based alternatives.
What safety certifications apply to SI8384PM-IUR?
SI8384PM-IUR is certified to UL 1577 (2500 VRMS, 1 min), VDE 0884-10, CSA Component Notice 5A, IEC 60950-1, IEC 62368-1, CQC GB4943.1, and meets reinforced insulation requirements. These approvals cover creepage, clearance, and working voltage - enabling direct use in safety-critical PLC and DCS designs without additional system-level validation.
Can SI8384PM-IUR be used with 12 V or 48 V field inputs?
Yes, SI8384PM-IUR supports 12 V and 48 V field inputs via external resistor network adjustment. The bipolar LED emulator input has a nominal 2.0 V forward drop; datasheet Section 4.2 provides recommended resistor values to scale input current to 1 mA across 12–48 V ranges while maintaining IEC 61131-2 compliance and noise immunity.
What is the maximum data rate supported by SI8384PM-IUR?
SI8384PM-IUR supports up to 2 Mbps data rate with typical propagation delay of 1.2 µs and maximum of 2.5 µs. This bandwidth accommodates fast-switching sensors and high-speed counting applications, though the 30 ms debounce filter limits effective edge detection to ~33 Hz - making it ideal for switch/relay monitoring rather than high-frequency pulse trains.
SI8384PM-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 8
- Inputs - Side 1/Side 2:
- 8/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- -
- Data Rate:
- 2Mbps
- Propagation Delay tpLH / tpHL (Max):
- -
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 3.9ns, 3.7ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QSOP
SI8384PM-IUR FAQ
1.How can I place an order for SI8384PM-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8384PM-IUR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI8384PM-IUR reliable?
The price and inventory of SI8384PM-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8384PM-IUR is usually 5 days.
3.What payment methods are accepted for SI8384PM-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8384PM-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8384PM-IUR?
SI8384PM-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8384PM-IUR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI8384PM-IUR?
For technical support, including SI8384PM-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8384PM-IUR requirements.
6.How does Aetrix verify that SI8384PM-IUR is sourced from the original manufacturer or authorized distributors?
All SI8384PM-IUR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI8384PM-IUR meets industry standards.
7.What is the process for return or replacement of SI8384PM-IUR?
All SI8384PM-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8384PM-IUR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI8384PM-IUR part is unused and in its original packaging.
Return procedure for SI8384PM-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8384PM-IUR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
