MCP25025T-I/SL - 8-Input CAN I/O Expander | Microchip
MPN: MCP25025T-I/SL ✓ NakahandaMCP25025T-I/SL Ulas
A CAN I/O expander is a peripheral that extends a host controller's digital input and output capability over a serial bus. It sits between a CAN-capable microcontroller or CAN transceiver and external switches, indicators, sensors, and actuators. The target belongs to the broader interface-IC and I/O-expander hierarchy: it combines a CAN receiver, digital input conditioning, configurable output drivers, PWM capability, EEPROM, and power-on reset in one device. This integration reduces external logic when a design needs remote I/O nodes connected to a CAN network.
Verified features include up to 8 digital I/O lines, up to 2 PWM outputs, three transmit buffers, two receive buffers, one mask, and two CAN filters. The device also includes EEPROM, power-on reset, and no interrupt output. Its 4 MHz clock supports the internal CAN and serial functions, while the 2.7 V to 5.5 V range supports both lower-voltage and 5 V embedded systems when the surrounding interface levels are compatible.
The MCP25025 family is intended for CAN-connected embedded applications where a central controller must monitor inputs and drive remote outputs without placing every I/O pin on the main processor. The configurable I/O architecture allows the design to use lines as inputs or outputs. Push-pull operation is useful for digital loads that need a actively driven signal, while the stated 25 mA source or sink capability sets a firm boundary for LED, relay-driver, or other load designs.
Typical uses include industrial CAN control modules, building automation endpoints, vehicle accessory controllers, remote sensor nodes, actuator concentrators, and small PLC-style interface boards. The device is especially useful where a CAN bus already exists and adding another controller would be unnecessary. Firmware must configure the GPIO and CAN behavior, and the host must also provide the physical CAN transceiver unless the connected interface arrangement already includes one.
Designers should verify absolute maximum voltages, pin-specific input thresholds, output timing, reset behavior, and transceiver compatibility against the manufacturer datasheet before layout release. Keep the CAN and 1-Wire signal paths away from noisy switching nodes, provide the required bypass capacitance close to the supply pins, and check that each driven load remains below 25 mA. The 14-SOIC package is leaded and easy to inspect, but board area is larger than an equivalent fine-pitch surface-mount package.
This page combines verified distributor specifications, manufacturer positioning, interface hierarchy, application guidance, and replacement constraints. Its practical value is the separation between confirmed specifications and unverified parameters, helping engineers move from part selection to schematic review without treating unsupported assumptions as datasheet facts.
Mga alternatibo na pwedeng ilagay na MCP25025T-I/SL — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Wala ng magagamit na drop-in alternatibo para sa produkto na ito.
Hilingin ang AlternatiboMCP25025T-I/SL Mga Spesipikasyon
| Product Type | CAN input/output expander |
| Number of Digital I/O | 8 |
| Serial Interface | CAN with configurable 1-Wire line-driver option |
| Clock Frequency | 4 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| PWM Outputs | Up to 2 |
| CAN Transmit Buffers | 3 |
| CAN Receive Buffers | 2 |
| CAN Masks | 1 |
| CAN Filters | 2 |
| Type ng Output | Push-pull |
| Output Source Current | 25 mA |
| Output Sink Current | 25 mA |
| Mga Karakteristika | EEPROM, power-on reset, PWM |
| Interrupt Output | No |
| Packhaging | 14-SOIC, 3.90 mm width |
| Packaging | Tape and reel |
Gabay sa Pin Configuration ng MCP25025T-I/SL 14-soic, 3.90 mm width
Pin configuration para sa MCP25025T-I/SL (14-soic, 3.90 mm width package). Ang pagnunumero ng pin, mga function, at connection diagram ay tinukoy sa datasheet ng manufacturer. Sumangguni dito para sa eksaktong footprint at mga alituntunin sa soldering.
Wala ng detalyadong pinout data na magagamit para sa MCP25025T-I/SL.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
MCP25025T-I/SL ay nararapat para sa 7 aplikasyons: Industrial CAN Control Module, Building Automation Endpoint, Remote Sensor Node, Vehicle Accessory Controller, Small PLC-Style I/O Concentrator, Actuator Concentrator, CAN-Based Test Fixture.
Industrial CAN Control Module
The MCP25025T-I/SL fits an industrial CAN node that must gather digital field signals and distribute control outputs without adding another host microcontroller. Its verified 8 digital I/O, up to 2 PWM outputs, and 2.7 V to 5.5 V supply range provide a useful interface foundation around a CAN-capable controller. Place the device beside the input switches, status LEDs, and actuator drivers, keeping the bus transceiver on the same board. Because the verified excerpts do not provide industrial temperature or ESD ratings, qualify the assembled module for its actual environment rather than assuming industrial compliance.
Inirekomenda
Building Automation Endpoint
Use MCP25025T-I/SL in a CAN-based building automation endpoint where door, occupancy, or equipment-state inputs and relay-control outputs must be consolidated. The device's eight configurable I/O lines can reduce discrete GPIO demand, while two PWM outputs can support proportional actuator or indicator functions where the system allows it. Its push-pull output stage is rated to 25 mA source or sink current, so relay coils, motor loads, and high-current lighting should use external drivers. Firmware must define input filtering, output defaults, and safe states during reset.
Inirekomenda
Remote Sensor Node
The MCP25025T-I/SL is appropriate for a remote sensor concentrator when the node communicates over CAN and needs to combine sensed digital states with local indication or actuator control. Its configurable 1-Wire line-driver option can support compatible 1-Wire devices when the system leaves that function available. The 4 MHz clock and two CAN receive buffers provide the core communication resources described by the manufacturer, while eight I/O lines support discrete sensors and status outputs. Verify signal levels, cable length, grounding, and the exact 1-Wire configuration in firmware before deployment.
Inirekomenda
Vehicle Accessory Controller
The MCP25025T-I/SL can serve as an accessory or body-control interface where a vehicle network already carries CAN traffic and the node needs switch inputs, lamp indicators, or small actuator commands. The 8-I/O capacity provides a practical resource budget, while the 2-PWM capability may serve compatible low-power functions. Output current must remain at or below the verified 25 mA source or sink value, with transistor drivers used for relays and solenoids. Automotive qualification, transient immunity, temperature range, and regulatory compliance are not established by the supplied excerpts and must be independently verified.
Inirekomenda
Small PLC-Style I/O Concentrator
The MCP25025T-I/SL is useful in a compact PLC-style CAN I/O concentrator where field inputs and outputs must be expanded around a central controller. The verified eight-I/O count, configurable digital lines, and two optional PWM outputs provide enough flexibility for simple discrete automation. Use input conditioning appropriate to the field wiring and external protection for inductive or high-current loads. The absence of a verified interrupt output means the system designer should choose an event-reporting strategy based on CAN polling, periodic status frames, or another explicitly supported mechanism.
Inirekomenda
Actuator Concentrator
Use MCP25025T-I/SL as the digital-control portion of an actuator concentrator when actuators include low-current valves, indicators, or logic-enabled drivers. The push-pull outputs and verified 25 mA source or sink capability define the direct-load boundary, so external transistor stages should handle larger loads. Up to 2 PWM outputs can support compatible proportional or speed-control functions if the attached driver accepts the target's timing and frequency. Keep CAN routing separate from motor switching, provide local decoupling, and establish safe output states for reset and communication-loss conditions.
Inirekomenda
CAN-Based Test Fixture
The MCP25025T-I/SL can expand a compact test fixture that reads limit switches and drives control signals from a CAN master. Eight I/O lines simplify fixture wiring, and the configurable 1-Wire option may support identification or sensor channels when required. The 2.7 V to 5.5 V operating range can simplify shared test electronics, provided every attached device shares a compatible logic level. Because the package is a 14-SOIC, the target is particularly convenient for prototypes and manually serviced boards, but production designs should confirm temperature, ESD, and sourcing requirements.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for MCP25025T-I/SL — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto |
|---|---|
| Brand | Microchip Technology |
| Package | 14-SOIC |
| Product Type | CAN input/output expander |
| Number of Digital I/O | 8 |
| Serial Interface | CAN with configurable 1-Wire line-driver option |
| Clock Frequency | 4 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| PWM Outputs | Up to 2 |
| Output Type | Push-pull |
| Output Source Current | 25 mA |
| Output Sink Current | 25 ma |
| Interrupt Output | No |
| Features | EEPROM, power-on reset, PWM |
| CAN Transmit Buffers | 3 |
| CAN Receive Buffers | 2 |
Pangunahing mga Pagkakaiba
- CAN-oriented integration (kumpara saMCP23009T-E/SS)
- Two integrated PWM outputs (kumpara saMCP23009T-E/SS)
- Output loading (kumpara saMCP23009T-E/SS)
- No interrupt output (kumpara saMCP23009T-E/SS)
Talaan ng Disenyo
The verified supply range is 2.7 V to 5.5 V. Place the required bypass capacitors close to the device's supply and ground pins, and confirm the voltage tolerance of every CAN transceiver, sensor, and load connected to the same board. The 25 mA source and sink rating applies to output current, not total board current or regulator capacity. Use separate local regulation when several outputs or external drivers draw additional current.
Keep the CAN and optional 1-Wire paths short, controlled, and away from switching power paths and high-current actuator traces. Provide the correct CAN physical-layer termination and transceiver placement according to the selected bus architecture; termination is not automatically part of the MCP25025. Confirm ground continuity and use a clean reference plane for communications. The 14-SOIC footprint is mechanically straightforward, but pin escape routing still requires care around external protection devices.
Do not treat an eight-I/O functional alternative as a pin-compatible substitute without comparing the complete pin map, package, supply limits, protocol, and output timing. MCP23009T-E/SS is identified as an I2C, interrupt-capable expander rather than a verified MCP25025T-I/SL drop-in part. Also avoid driving relays, solenoids, or motors directly through the target's 25 mA output stage. Add suitable transistor or MOSFET drivers and define safe output states during reset.
Impormasyon ng Pagsunod sa Kautusan
The supplied verified excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These values remain unknown rather than being inferred from the manufacturer or package.
