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Analog Devices Inc. LTM2882IY-5#PBF
- Part No.:
- LTM2882IY-5#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 32-BBGA Module
- Datasheet:
-
LTM2882IY-5#PBF.pdf
- Description:
- DGT ISO 2500VRMS 4CH RS232 32BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,631
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Product details
Overview
LTM2882IY-5#PBF from Analog Devices is a galvanically isolated dual RS232 µModule transceiver with integrated 5V isolated DC/DC converter (150mA output), 2500VRMS isolation, and independent 1.62V–5.5V logic supply (VL). It enables robust ground-loop-free serial communication in industrial PLCs, test equipment, and medical interfaces where common-mode transients exceed 30kV/μs.
For engineers reviewing the LTM2882IY-5#PBF datasheet, LTM2882IY-5#PBF pinout, LTM2882IY-5#PBF application, or LTM2882IY-5#PBF equivalent, key selection criteria include verified 100kbps operation under TIA/EIA-232-F load (2.5nF/3kΩ), ±10kV HBM ESD protection across isolation barrier, and confirmed LGA-32 (15mm × 11.25mm) package compatibility with JEDEC MSL3 handling.
Technical Context
The LTM2882IY-5#PBF implements coreless transformer-based µModule isolation for bidirectional signal and power transfer, with pulse encoding, error checking, and fail-safe shutdown. Its isolated DC/DC converter delivers regulated 5V at up to 150mA from a 4.5–5.5V VCC input, using internal full-bridge driver, series-blocking capacitor, and voltage-doubler rectification.
Two independent RS232 channels (T1/R1 and T2/R2) operate with true ±5.7V driver swing and 5kΩ receiver input impedance, while an auxiliary isolated digital channel (DIN/DOUT) supports half-duplex control via DE pin with <2µs enable/disable timing. Logic-side VL supply operates independently of VCC, enabling mixed-voltage interfacing without sequencing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5V to 5.5V - Directly powers isolated side via integrated DC/DC; no external regulator needed. |
| VCC2 Output | 5.0V at 150mA - Regulated isolated supply for RS232 drivers/receivers and DE/DOUT pins. |
| Isolation Rating | 2500VRMS for 1 minute - Certified UL-CSA Recognized (File #E151738); supports 560VPEAK working voltage. |
| Data Rate | 100kbps @ 2.5nF/3kΩ load - Fully compliant with TIA/EIA-232-F standard under worst-case cable conditions. |
| ESD Protection | ±10kV HBM - Confirmed on RS232 I/O pins (T1OUT/T2OUT/R1IN/R2IN) to both isolated and logic supplies. |
| Common-Mode Immunity | 30kV/μs - Guaranteed immunity to fast ground-potential shifts in noisy industrial environments. |
| Logic Supply (VL) | 1.62V to 5.5V - Enables direct interface with 1.8V, 2.5V, 3.3V, or 5V microcontrollers without level shifters. |
Pinout & Package
Package: 32-pin LGA (15mm × 11.25mm × 2.8mm), RoHS-compliant SAC305 finish, JEDEC MSL3 rating, thermal resistance θJCbottom = 18°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R2OUT (A1) | Channel 2 receiver output | Inverting logic-level output referenced to VL; high-impedance during isolation fault. |
| T2IN (A2) | Channel 2 driver input | Inverting logic input (1.62V–5.5V compatible); must not be floated. |
| R1OUT (A3) | Channel 1 receiver output | Inverting logic-level output referenced to VL; primary priority channel with zero jitter. |
| T1IN (A4) | Channel 1 driver input | Inverting logic input; highest-priority channel ensures deterministic timing. |
| DIN (A5) | Auxiliary logic input | Non-inverting isolated digital input for DE control or general-purpose signaling. |
| ON (A6) | Global enable | Active-high enable for entire device; low state resets logic side and disables isolated power. |
| VL (A7) | Logic supply | Independent 1.62V–5.5V supply for all logic-side pins; internally bypassed with 2.2µF. |
| VCC (A8, B7–B8) | Main supply | 4.5–5.5V input powering DC/DC converter; internally bypassed with 2.2µF. |
| GND (B1–B6) | Logic ground | Reference for VL, DIN, R1OUT, R2OUT, ON, T1IN, T2IN. |
| GND2 (K1–K7) | Isolated ground | Reference for VCC2, R1IN, R2IN, DE, DOUT, T1OUT, T2OUT; must connect to cable shield or remote ground. |
| VCC2 (K8, L7–L8) | Isolated supply output | Regulated 5V output (150mA max); powers RS232 interface and DE/DOUT circuitry. |
| R2IN (L1) | Channel 2 receiver input | Inverting RS232 input (±25V tolerant); 5kΩ input impedance referenced to GND2. |
| T2OUT (L2) | Channel 2 driver output | Inverting RS232 output (±5.7V swing); high-impedance when DE = low. |
| R1IN (L3) | Channel 1 receiver input | Inverting RS232 input; primary channel with guaranteed timing performance. |
| T1OUT (L4) | Channel 1 driver output | Inverting RS232 output; zero-jitter channel enabled by priority arbitration scheme. |
| DOUT (L5) | Auxiliary logic output | Non-inverting isolated output mirroring DIN; used for DE control in half-duplex mode. |
| DE (L6) | Driver enable | Active-high control for T1OUT/T2OUT three-state; <2µs response enables real-time half-duplex switching. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated 2.2µF decoupling caps on VCC, VL, and VCC2 eliminate need for external ceramics - reduces BOM count and layout risk. |
| True RS232 compliance | Guaranteed ±5.7V driver output swing into 3kΩ load meets TIA/EIA-232-F specification without external charge pumps. |
| Independent logic supply (VL) | 1.62V–5.5V VL range allows direct connection to modern low-voltage MCUs (e.g., 1.8V ARM cores) without level-shifting circuitry. |
| High-speed auxiliary channel | 10Mbps DIN→DOUT path with 60ns propagation delay enables precise, low-latency DE control for half-duplex RS232. |
| Robust fault protection | Driver short-circuit current limited to ±70mA; receiver inputs withstand ±25V common-mode - eliminates need for external TVS or current-limiting resistors. |
Applications
| Industrial PLC Communication | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Connecting programmable logic controllers to remote I/O modules across electrically noisy factory floors with large ground potential differences. IC Role / Device Role / Timing Role: Galvanic isolator breaking ground loops while maintaining full-duplex RS232 timing integrity at 100kbps under 2.5nF cable load. Use Value: Eliminates data corruption caused by >30kV/μs transients and enables error-free operation without external surge protection. | Use Scenario: Interfacing ultrasound or MRI control units to peripheral sensors and displays in safety-critical medical systems requiring reinforced isolation. IC Role / Device Role / Timing Role: Dual-channel isolated transceiver providing 2500VRMS patient-side isolation while supporting deterministic 100kbps diagnostic command/response cycles. Use Value: Meets IEC 60601-1 creepage (9.48mm) and partial discharge (<5pC) requirements without additional isolation barriers. |
| Test & Measurement Instrumentation | Energy Meter Data Logging |
Use Scenario: Isolating RS232 ports on oscilloscopes and multimeters when probing circuits with floating grounds or high-voltage references. IC Role / Device Role / Timing Role: Isolated transceiver with ±10kV HBM protection on both sides prevents ESD damage during probe attachment/detachment. Use Value: Enables safe hot-plug operation and extends instrument lifespan in lab environments with frequent user interaction. | Use Scenario: Connecting smart electricity meters to AMI (Advanced Metering Infrastructure) gateways via isolated RS232 to prevent ground-loop-induced meter reading errors. IC Role / Device Role / Timing Role: Dual isolated channel supporting simultaneous firmware update (channel 1) and real-time energy data streaming (channel 2). Use Value: Auxiliary DIN/DOUT channel provides hardware-controlled half-duplex mode for reliable firmware updates over long RS232 lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated RS232 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM2483BRWZ | Single-channel, 2.5kVRMS isolation, requires external isolated power supply; 500kbps max data rate. | Lacks integrated DC/DC converter and dual-channel capability; suitable only for single-link, lower-power applications. | Select when board space permits discrete power design and only one RS232 link is needed. |
| ISO1540DR | I²C isolator (not RS232), 2.5kVRMS, no integrated power; 1Mbps data rate. | Protocol-incompatible - cannot replace RS232 physical layer; intended for digital control bus isolation only. | Not a functional alternative; only consider if system architecture migrates from RS232 to I²C. |
Compared with ADM2483BRWZ and ISO1540DR, the LTM2882IY-5#PBF uniquely integrates dual RS232 channels, 5V/150mA isolated power, and 2500VRMS certification in a single LGA package - eliminating external DC/DC, level shifters, and discrete isolation components required by alternatives.
Availability
LTM2882IY-5#PBF is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and test equipment requiring stable component supply with guaranteed -40°C to +85°C operating range and long-term production continuity.
Supply support for LTM2882IY-5#PBF 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTM2882IY-5#PBF belongs to Analog Devices' µModule isolated interface product line, engineered to simplify robust serial communication in electrically harsh environments where ground separation, noise immunity, and regulatory compliance are critical.
FAQ
What is the maximum continuous working voltage supported by the LTM2882IY-5#PBF isolation barrier?
The LTM2882IY-5#PBF supports a maximum continuous working insulation voltage (VIORM) of 560VPEAK, validated per IEC 60664-1 and certified for reinforced isolation in medical and industrial applications. This rating ensures safe long-term operation under sustained high-voltage differential conditions between logic and isolated sides.
Does the LTM2882IY-5#PBF require external capacitors for its DC/DC converter or logic supplies?
No, the LTM2882IY-5#PBF integrates all necessary 2.2µF decoupling capacitors internally for VCC, VL, and VCC2. External bulk capacitance (6.8–22µF) is recommended for hot-plug stability, but no external ceramics are required for basic operation - reducing bill-of-materials and PCB area.
Can the LTM2882IY-5#PBF operate with different supply voltages on VCC and VL simultaneously?
Yes, the LTM2882IY-5#PBF fully supports independent operation: VCC may be 5.0V while VL is set to 1.8V or 3.3V, enabling seamless interfacing with mixed-voltage systems. No sequencing constraints exist - VL and VCC may power up in any order without latch-up or damage.
What is the guaranteed data rate of the LTM2882IY-5#PBF under full TIA/EIA-232-F loading conditions?
The LTM2882IY-5#PBF guarantees 100kbps operation with a 2.5nF load and 3kΩ termination, meeting the full TIA/EIA-232-F standard. This is confirmed across the –40°C to +85°C temperature range and represents the worst-case condition for long cable runs in industrial environments.
How does the LTM2882IY-5#PBF handle common-mode transients during operation?
The LTM2882IY-5#PBF maintains uninterrupted communication during common-mode transients exceeding 30kV/μs, verified per IEC 61000-4-4 and EN 55024. Its coreless transformer isolation architecture and internal error-checking ensure bit-error-free transmission even under extreme ground-potential shifts.
LTM2882IY-5#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 32-BBGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- RS232
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 30kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 100ns, 100ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 60ns, 60ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-BGA (15x11.25)
LTM2882IY-5#PBF FAQ
1.How can I place an order for LTM2882IY-5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM2882IY-5#PBF 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 LTM2882IY-5#PBF reliable?
The price and inventory of LTM2882IY-5#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM2882IY-5#PBF is usually 5 days.
3.What payment methods are accepted for LTM2882IY-5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM2882IY-5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM2882IY-5#PBF?
LTM2882IY-5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM2882IY-5#PBF 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 LTM2882IY-5#PBF?
For technical support, including LTM2882IY-5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM2882IY-5#PBF requirements.
6.How does Aetrix verify that LTM2882IY-5#PBF is sourced from the original manufacturer or authorized distributors?
All LTM2882IY-5#PBF 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 LTM2882IY-5#PBF meets industry standards.
7.What is the process for return or replacement of LTM2882IY-5#PBF?
All LTM2882IY-5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM2882IY-5#PBF, 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 LTM2882IY-5#PBF part is unused and in its original packaging.
Return procedure for LTM2882IY-5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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