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Analog Devices Inc. LTM2882HY-5#PBF
- Part No.:
- LTM2882HY-5#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 32-BBGA Module
- Datasheet:
-
LTM2882HY-5#PBF.pdf
- Description:
- DGT ISO 2500VRMS 4CH RS232 32BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,138
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Product details
Overview
LTM2882HY-5#PBF from Analog Devices is a galvanically isolated dual RS232 µModule transceiver with integrated 5V/150mA isolated DC/DC converter, 2500VRMS isolation rating, and 1.62V–5.5V logic supply (VL) supporting mixed-voltage interfacing. It delivers true TIA/EIA-232-F compliant driver outputs (±5.7V), operates across –40°C to +105°C, and enables ground-loop-free industrial serial communication.
For engineers reviewing the LTM2882HY-5#PBF datasheet, LTM2882HY-5#PBF pinout, LTM2882HY-5#PBF application, or LTM2882HY-5#PBF equivalent, key selection considerations include its 30kV/µs common-mode transient immunity, auxiliary isolated digital channel (DIN/DOUT), half-duplex DE control capability, and BGA/LGA package compatibility with 15mm × 11.25mm footprints.
Technical Context
The LTM2882HY-5#PBF implements coreless transformer-based µModule isolation for bidirectional signal and power transfer across the barrier, with pulse encoding, error checking, and fail-safe shutdown. Its integrated full-bridge DC/DC converter operates at ~2MHz, feeding a voltage-doubler rectifier and low-noise LDO to deliver regulated 5V at up to 150mA on VCC2.
It supports two independent RS232 channels (T1/R1 and T2/R2), each with inverting logic, plus an auxiliary non-inverting digital channel (DIN/DOUT). The DE pin provides sub-2µs driver enable/disable for half-duplex operation, while ON controls full system power-up/reset sequencing independently of VL and VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500VRMS for 1 minute - meets UL-CSA E151738 recognition and supports safe operation in Class I equipment with reinforced insulation. |
| Max Data Rate | 1Mbps (250pF/3kΩ load) - enables high-speed legacy RS232 links without external timing components. |
| VCC Supply Range | 4.5V–5.5V - compatible with standard 5V systems; no level-shifting required for host MCU or FPGA I/O. |
| VL Logic Supply | 1.62V–5.5V - allows direct interface to 1.8V, 2.5V, 3.3V, or 5V logic without external translators. |
| VCC2 Output | 5V @ 150mA - powers isolated-side peripherals (e.g., RS232 line drivers, sensors, or optocoupler LEDs) without external regulators. |
| ESD Protection | ±10kV HBM on RS232 pins and across isolation barrier - eliminates need for external TVS diodes in most industrial environments. |
| Common-Mode Immunity | 30kV/µs - ensures uninterrupted communication during fast transients from motor drives, relays, or lightning-induced surges. |
Pinout & Package
Package: 32-pin LGA or BGA (15mm × 11.25mm × 2.8mm / 3.42mm); RoHS-compliant SAC305 ball/pad finish; MSL Level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (A8, B7–B8) | Main input supply | 4.5V–5.5V primary power source; internally bypassed with 2.2µF capacitor; powers logic side and DC/DC primary. |
| VL (A7) | Logic interface supply | Independent 1.62V–5.5V rail for DIN, T1IN, T2IN, R1OUT, R2OUT, ON - decouples logic voltage from VCC. |
| ON (A6) | System enable | Active-high control: high = full operation (power + data), low = logic-side reset + isolated-side power-off. |
| DIN (A5) | Auxiliary isolated input | Non-inverting logic input mirrored to DOUT; used for DE control or status signaling across isolation barrier. |
| T1IN / T2IN (A4 / A2) | RS232 driver inputs | Inverting logic inputs controlling T1OUT/T2OUT; require defined logic levels - must not be floated. |
| R1OUT / R2OUT (A3 / A1) | RS232 receiver outputs | Inverting logic outputs driven by R1IN/R2IN; high-impedance during isolation fault for fail-safe behavior. |
| GND (B1–B6) | Logic-side ground | Reference for VCC, VL, and all logic-side signals; must be separated from GND2 by ≥9.48mm creepage. |
| VCC2 (K8, L7–L8) | Isolated 5V output | Regulated 5V supply sourced from internal DC/DC; powers R1IN, R2IN, DE, DOUT; rated for 150mA continuous. |
| GND2 (K1–K7) | Isolated-side ground | Reference for VCC2, RS232 line side, and isolated peripherals; forms isolation barrier with GND. |
| R1IN / R2IN (L3 / L1) | RS232 receiver inputs | Inverting inputs tolerant of ±25V common-mode; 5kΩ input impedance; open-circuit yields logic high output. |
| T1OUT / T2OUT (L4 / L2) | RS232 driver outputs | True RS232 outputs (–5.7V to +6.2V); short-circuit protected to ±15V; high-Z when DE = low. |
| DOUT (L5) | Auxiliary isolated output | Non-inverting output mirroring DIN; used to drive DE or convey status; immune to logic-side noise. |
| DE (L6) | Driver enable | Active-high control for T1OUT/T2OUT; enables half-duplex mode with <2µs enable/disable latency. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated 2.2µF decoupling caps, isolated DC/DC transformer, and RS232 transceiver reduce BOM count and layout complexity. |
| Galvanic isolation barrier | 2500VRMS dielectric strength with 560VPEAK working voltage and 6pF input-to-output capacitance minimizes noise coupling. |
| Flexible logic interfacing | VL pin supports 1.62V–5.5V logic families (1.8V/2.5V/3.3V/5V) without level shifters, enabling mixed-voltage system integration. |
| Robust transient immunity | 30kV/µs common-mode rejection ensures reliable operation in electrically noisy environments like factory automation or test equipment. |
| Fail-safe isolation architecture | Automatic high-impedance output on R1OUT/R2OUT during isolation failure prevents erroneous data propagation to host controller. |
| Half-duplex support via DE | Sub-2µs driver enable/disable using DIN→DOUT→DE path simplifies RS485-style bus control without external logic. |
Applications
| Industrial PLC Serial Interface | Medical Diagnostic Equipment |
|---|---|
|
Use Scenario: Connecting programmable logic controllers to legacy RS232 field devices across different ground potentials in factory floors. IC Role / Device Role / Timing Role: Galvanic isolator and dual-channel RS232 transceiver with integrated 5V/150mA power for isolated-side peripherals. Use Value: Eliminates ground loops causing data corruption; withstands 30kV/µs transients from nearby motor drives and solenoids. |
Use Scenario: Isolating RS232 ports in MRI-compatible patient monitors and imaging systems to meet IEC 60601-1 safety requirements. IC Role / Device Role / Timing Role: Reinforced insulation barrier providing 2500VRMS isolation and ±10kV HBM ESD protection on line-side pins. Use Value: Ensures patient safety by preventing leakage currents; maintains communication integrity during RF-intensive MRI sequences. |
| Test & Measurement Instrumentation | Energy Metering Communication Hub |
|
Use Scenario: Integrating isolated RS232 in multimeters, oscilloscopes, and calibration tools that connect to grounded PCs or DUTs. IC Role / Device Role / Timing Role: Dual-channel transceiver with 1Mbps capability and auxiliary DIN/DOUT channel for remote control signaling. Use Value: Enables hot-pluggable connections without damaging host or instrument; supports simultaneous configuration and data logging. |
Use Scenario: Providing isolated RS232 connectivity between smart meters and central data concentrators in AMI networks. IC Role / Device Role / Timing Role: Isolated power + data interface with 5V/150mA VCC2 output powering external RS232 line drivers or optical modules. Use Value: Extends communication range beyond standard RS232 limits; protects concentrator electronics from meter-side surge events. |
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, no integrated DC/DC; requires external isolated 5V supply. | Suitable for space-constrained single-port designs where external isolated power is already available. | Select when board area is critical and isolated 5V is provided elsewhere; verify external supply meets 5V±5%, 150mA spec. |
| ISO1540DR | I²C isolator (not RS232); 2.5kVRMS, 1Mbps, no integrated power; requires separate level-shifting and transceivers. | Applicable only for I²C-based sensor interfaces-not a functional substitute for RS232 isolation. | Reject for RS232 use; consider only if redesigning to I²C and adding external MAX3232-type transceivers. |
Compared with ADM2483BRWZ and ISO1540DR, the LTM2882HY-5#PBF uniquely integrates dual RS232 transceivers, 2500VRMS isolation, and 5V/150mA isolated power in one package-eliminating external regulators, transformers, and level shifters required by alternatives.
Availability
LTM2882HY-5#PBF is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and test instrumentation requiring stable component supply across extended temperature ranges (–40°C to +105°C).
Supply support for LTM2882HY-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 (now part of Analog Devices, Inc., a subsidiary of Analog Devices, Inc.) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTM2882HY-5#PBF belongs to the µModule isolated transceiver product line, designed specifically for robust, drop-in galvanic isolation in safety-critical and electrically noisy industrial and medical serial interfaces.
FAQ
What is the maximum continuous working voltage supported by the LTM2882HY-5#PBF isolation barrier?
The LTM2882HY-5#PBF supports a maximum continuous working insulation voltage (VIORM) of 560VPEAK (400VRMS), validated per IEC 60664-1 and certified under UL-CSA E151738. This rating applies across the full –40°C to +105°C operating range and ensures long-term reliability in mains-connected industrial equipment where sustained common-mode voltages occur.
Can the LTM2882HY-5#PBF operate with a 3.3V logic supply (VL) while powered from a 5V VCC input?
Yes, the LTM2882HY-5#PBF fully supports independent operation: VCC may be 5V (4.5V–5.5V) while VL is set to 3.3V (or any value from 1.62V to 5.5V). This decoupling allows seamless interfacing with 3.3V microcontrollers or FPGAs without level shifters, and the internal 2.2µF bypass on VL ensures stable logic-side operation.
Does the LTM2882HY-5#PBF require external decoupling capacitors?
No external decoupling capacitors are required for basic operation-the LTM2882HY-5#PBF integrates 2.2µF ceramic capacitors for VCC, VL, VCC2, and GND2. However, a bulk capacitor (6.8µF–22µF) is recommended near the input to suppress hot-plug transients, and a 1µF–4.7µF low-ESL ceramic cap is advised for EMI-sensitive applications.
How does the auxiliary DIN/DOUT channel function in the LTM2882HY-5#PBF?
The DIN/DOUT channel in the LTM2882HY-5#PBF provides a non-inverting, isolated digital path with 10Mbps capability and <100ns propagation delay. It is commonly used to drive the DE pin for half-duplex RS232 operation, relay status signals, or synchronize isolated peripherals-without consuming additional isolation components.
What is the thermal performance of the LTM2882HY-5#PBF in a 15mm × 11.25mm LGA package?
In the LGA package, the LTM2882HY-5#PBF has θJA = 29°C/W, θJCbottom = 18°C/W, and θJB = 22.7°C/W. At full 150mA VCC2 load and 1Mbps dual-channel operation, junction temperature rise remains within safe limits (<125°C) with standard 2oz copper and minimal thermal vias-no heatsink required under typical industrial airflow conditions.
LTM2882HY-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 ~ 105°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-BGA (15x11.25)
LTM2882HY-5#PBF FAQ
1.How can I place an order for LTM2882HY-5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM2882HY-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 LTM2882HY-5#PBF reliable?
The price and inventory of LTM2882HY-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 LTM2882HY-5#PBF is usually 5 days.
3.What payment methods are accepted for LTM2882HY-5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM2882HY-5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM2882HY-5#PBF?
LTM2882HY-5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM2882HY-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 LTM2882HY-5#PBF?
For technical support, including LTM2882HY-5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM2882HY-5#PBF requirements.
6.How does Aetrix verify that LTM2882HY-5#PBF is sourced from the original manufacturer or authorized distributors?
All LTM2882HY-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 LTM2882HY-5#PBF meets industry standards.
7.What is the process for return or replacement of LTM2882HY-5#PBF?
All LTM2882HY-5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM2882HY-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 LTM2882HY-5#PBF part is unused and in its original packaging.
Return procedure for LTM2882HY-5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTM2882HY-5#PBF Tags
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