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Microchip Technology MCP2542FDT-E/SN
- Part No.:
- MCP2542FDT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP2542FDT-E/SN.pdf
- Description:
- IC TRANSCEIVER 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,901
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Product details
Overview
MCP2542FDT-E/SN from Microchip Technology is a CAN FD physical-layer transceiver supporting up to 8 Mbps operation, ISO 11898-2:2016 compliance, AEC-Q100 Grade 1 qualification (-40°C to +125°C), 4 µA standby current, and VIO-supplied digital I/O for 1.8V–5V microcontroller interfacing. It serves as the bus interface between CAN controllers and differential CANH/CANL lines in automotive body control modules.
For engineers reviewing the MCP2542FDT-E/SN datasheet, MCP2542FDT-E/SN pinout, MCP2542FDT-E/SN application, or MCP2542FDT-E/SN equivalent, key selection criteria include wake-up method (CAN activity vs. WUP), VIO-level flexibility, thermal shutdown behavior, permanent dominant detection, and 2–8 Mbps timing margin at 120 ns max propagation delay.
Technical Context
The MCP2542FDT-E/SN implements a dual-mode receiver (high-speed in Normal mode, low-power in Standby) with automatic transition between modes controlled by STBY pin state and supply voltage thresholds (VPORH/VPORL on both VDD and VIO). Its transmitter features slope-controlled outputs optimized for EME reduction and supports battery short-circuit protection on CANH/CANL.
Wake-up logic differs by variant: MCP2542FDT-E/SN uses basic CAN activity detection (3.6 µs filter time), not Wake-up Pattern (WUP); it includes VIO pin for independent I/O supply, enabling direct connection to 1.8V–5V controllers without level shifters. Bus pins disconnect when unpowered (VDD or VIO below POR), preventing bus loading during brown-out.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 8 Mbps - Enables CAN FD high-speed data payloads in ADAS domain controllers and gateway ECUs. |
| Propagation Delay | 120 ns max - Supports longer bus lengths (>40 m at 5 Mbps) while maintaining timing integrity. |
| Standby Current | 4 µA typical - Allows ultra-low-power sleep states in always-on vehicle networks (e.g., LIN/CAN gateways). |
| VIO Supply Range | 1.7V–5.5V - Permits direct interface to 1.8V, 2.5V, 3.3V, or 5V MCUs without external level translation. |
| ESD Protection | ±13 kV (IEC61000-4-2) on CANH/CANL - Meets automotive system-level ESD robustness requirements without added TVS diodes. |
| Operating Temp | -40°C to +125°C (Extended grade) - Qualified for under-hood and chassis-mounted applications per AEC-Q100 Rev. G. |
| Bus Fault Tolerance | CANH/CANL rated to ±58 V - Withstands load dump, jump-start, and reverse-battery conditions in 12V/24V systems. |
Pinout & Package
Package: 8-Lead SOIC (Small Outline Integrated Circuit), surface-mount, RoHS-compliant, with standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 TXD | Transmit Data Input | CMOS input tied internally to VIO via 33 kΩ pull-up; drives CANH/CANL dominant/recessive per logic level. |
| 2 VSS | Ground Reference | Primary ground return for analog and digital circuitry; must be low-impedance connection to system GND plane. |
| 3 VDD | Main Power Supply | 4.5–5.5 V supply powering transmitter, high-speed receiver, and internal regulators; POR threshold = 3.0 V (typ). |
| 4 RXD | Receive Data Output | CMOS output driven to VIO; reflects bus state (low = dominant, high = recessive); active in Normal and Standby modes. |
| 5 VIO | Digital I/O Supply | Independent 1.7–5.5 V supply for TXD, RXD, and STBY pins; enables mixed-voltage MCU interfacing. |
| 6 CANL | CAN Bus Low | Differential bus output/input; disconnects from bus when VDD or VIO < POR; protected against ±58 V faults. |
| 7 CANH | CAN Bus High | Differential bus output/input; symmetric drive with CANL; same fault protection and unpowered isolation as CANL. |
| 8 STBY | Standby Mode Control | Active-high input (internal MOS pull-up to VIO); asserts Standby to disable transmitter and HS receiver, retaining LP receiver and wake-up filter. |
Key Features
| Feature | Design Value |
|---|---|
| VIO-supplied digital I/O | Enables direct connection to 1.8V–5V microcontrollers without external level shifters or voltage translators. |
| Unpowered bus isolation | CANH/CANL enter high-impedance state when VDD or VIO drops below POR, preventing bus contention during power loss. |
| Permanent dominant detection | Disables driver outputs if TXD remains low > tPDT or bus stays dominant in Standby, preventing network corruption. |
| Thermal shutdown protection | Disables transmitter drivers above +175°C junction temperature; analog receiver remains functional for diagnostics. |
| Loop delay symmetry | ±10% at 2 Mbps - Ensures precise bit timing alignment critical for CAN FD error-free sampling at high speeds. |
Applications
| Automotive Body Control Module | Industrial CAN FD Gateway |
|---|---|
Use Scenario: Centralized control of door locks, lighting, HVAC, and window actuators via CAN FD backbone. IC Role / Device Role / Timing Role: Physical layer transceiver converting MCU CAN controller signals to differential bus levels with 120 ns propagation delay margin. Use Value: Enables deterministic 5 Mbps payload transmission for coordinated multi-node actuation while meeting AEC-Q100 reliability requirements. | Use Scenario: Protocol translation between legacy CAN 2.0 subnets and new CAN FD sensor clusters in factory automation. IC Role / Device Role / Timing Role: High-speed bus interface with VIO flexibility to match diverse controller I/O voltages across subsystems. Use Value: Eliminates need for discrete level shifters and reduces BOM count while supporting 8 Mbps burst data from vision sensors. |
| Medical Diagnostic Equipment | Aerospace Vehicle Health Monitor |
Use Scenario: Real-time communication between imaging subsystems and central processing unit in portable ultrasound devices. IC Role / Device Role / Timing Role: Robust CAN FD PHY with ±13 kV ESD protection and 4 µA standby current for battery-powered operation. Use Value: Maintains signal integrity in EMI-sensitive medical environments and extends battery life during idle monitoring phases. | Use Scenario: Distributed sensor telemetry in UAV flight control systems requiring fault-tolerant, low-latency bus communication. IC Role / Device Role / Timing Role: Automotive-qualified transceiver operating at -40°C to +125°C with permanent dominant detection for fault isolation. Use Value: Provides certified reliability for safety-critical health monitoring without derating, even under thermal stress or voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CAN FD transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP2542FD-E/SN | No exposed thermal pad (EP); identical electrical specs and pinout except EP absence. | Suitable for non-thermally constrained PCB layouts where heatsinking is not required. | Select MCP2542FDT-E/SN when enhanced thermal performance and EMI immunity via EP-to-GND connection are needed. |
| TJA1044GT/3,118 | Single-supply (VCC only); no VIO pin; 3.3V/5V I/O compatibility achieved via internal regulation, not external VIO. | Requires external level shifting for 1.8V controllers; lacks independent I/O supply flexibility. | Choose TJA1044GT/3,118 only when board space is limited and 1.8V MCU interface is not required. |
Compared with MCP2542FD-E/SN, the MCP2542FDT-E/SN adds thermal pad capability for improved power dissipation and EMC; versus TJA1044GT/3,118, it offers true 1.8V–5V I/O support via VIO, eliminating level-shifter dependencies in heterogeneous voltage designs.
Availability
MCP2542FDT-E/SN is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN FD gateways, medical diagnostic equipment, and aerospace vehicle health monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP2542FDT-E/SN 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
Microchip Technology Inc. is a leading provider of microcontroller, analog, FPGA, and connectivity solutions, serving automotive, industrial, consumer, and communications markets with vertically integrated silicon and software platforms.
The MCP2542FDT-E/SN belongs to Microchip's CAN FD transceiver product line, designed specifically for high-reliability, high-speed automotive and industrial networks demanding AEC-Q100 qualification, ultra-low standby power, and flexible I/O voltage support.
FAQ
What is the wake-up method supported by the MCP2542FDT-E/SN?
The MCP2542FDT-E/SN supports basic wake-up on CAN bus activity with a 3.6 µs filter time, not Wake-up Pattern (WUP). It detects any dominant state exceeding the filter duration to exit Standby mode. This differs from the MCP2542WFD series, which requires the ISO 11898-2:2016-defined three-event WUP sequence. The MCP2542FDT-E/SN's wake-up behavior is confirmed in DS20005514C Section 1.6.4 and Figure 1-1.
Does the MCP2542FDT-E/SN require external level shifters when interfacing with a 1.8V microcontroller?
No, the MCP2542FDT-E/SN does not require external level shifters for 1.8V microcontrollers because it includes a dedicated VIO pin that accepts 1.7V–5.5V supplies. TXD, RXD, and STBY are referenced to VIO, allowing direct CMOS-compatible interfacing. This eliminates voltage translation components and simplifies design-confirmed in DS20005514C Sections 1.7.6 and 1.7.7.2.
What is the significance of the 'T' suffix in MCP2542FDT-E/SN?
The 'T' in MCP2542FDT-E/SN denotes the inclusion of an Exposed Thermal Pad (EP) on the 8-lead SOIC package. As specified in DS20005514C Table 1-1 and Figure 1-4, this pad enhances thermal resistance and electromagnetic immunity when soldered to a grounded copper area. It is electrically connected to VSS and must be tied to system ground for optimal performance.
How does the MCP2542FDT-E/SN handle undervoltage conditions on VDD or VIO?
The MCP2542FDT-E/SN implements independent Power-on Reset (POR) comparators on both VDD (VPORH = 3.0 V typ) and VIO (VPORH_VIO = 1.2 V typ). If either supply drops below its POR threshold, the device enters Unpowered mode: CANH/CANL go high-impedance, RXD is forced high, and all internal blocks deactivate. This prevents bus loading during brown-out-detailed in DS20005514C Sections 1.5 and 1.6.1.
Is the MCP2542FDT-E/SN compatible with CAN 2.0 networks?
Yes, the MCP2542FDT-E/SN is fully backward-compatible with classical CAN 2.0 networks. It meets ISO 11898-2:2016 and supports all CAN 2.0 bit rates (up to 1 Mbps) in addition to CAN FD speeds (2–8 Mbps). Its differential receiver threshold (0.5–0.9 V), dominant/recessive voltage margins, and loop delay symmetry ensure interoperability with legacy nodes-verified in DS20005514C Sections 1.0 and 2.2.
MCP2542FDT-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- CANbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- -
- Receiver Hysteresis:
- 200 mV
- Data Rate:
- 8Mbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MCP2542FDT-E/SN FAQ
1.How can I place an order for MCP2542FDT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP2542FDT-E/SN 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 MCP2542FDT-E/SN reliable?
The price and inventory of MCP2542FDT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP2542FDT-E/SN is usually 5 days.
3.What payment methods are accepted for MCP2542FDT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP2542FDT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP2542FDT-E/SN?
MCP2542FDT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP2542FDT-E/SN 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 MCP2542FDT-E/SN?
For technical support, including MCP2542FDT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP2542FDT-E/SN requirements.
6.How does Aetrix verify that MCP2542FDT-E/SN is sourced from the original manufacturer or authorized distributors?
All MCP2542FDT-E/SN 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 MCP2542FDT-E/SN meets industry standards.
7.What is the process for return or replacement of MCP2542FDT-E/SN?
All MCP2542FDT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP2542FDT-E/SN, 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 MCP2542FDT-E/SN part is unused and in its original packaging.
Return procedure for MCP2542FDT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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