MCP25025-I/P - 8-Input CAN I/O Expander | Microchip
料号： MCP25025-I/P ✗ 停产MCP25025-I/P 概述
A CAN I/O expander is an interface IC that extends a microcontroller or system controller through a CAN physical network. It accepts digital inputs, controls output functions, and can provide timing-oriented outputs, reducing the number of discrete GPIO pins required on the host controller. In the broader electronics hierarchy, it belongs to interface ICs and I/O expanders rather than a microcontroller, memory device, or analog front end.
The principal verified features are eight digital I/O positions, support for as many as two PWM outputs, a user-configurable one-wire line driver, a 4 MHz clock, and operation from 2.7 V to 5.5 V. The MCP25025 family also includes CAN transmit buffers, receive buffers, masks, and filters according to the supplied family documentation. These resources support structured CAN message handling alongside general-purpose digital I/O.
The MCP25025-I/P is packaged as a 14-DIP, 0.300-inch, 7.62 mm through-hole package and is supplied in a tube according to the verified distributor data. DIP construction favors breadboard prototypes, legacy control boards, repair work, and industrial assemblies where sockets or through-hole assembly are preferred. A surface-mount redesign would be appropriate for compact new products where board area or automated assembly outweighs socketability.
Typical uses include industrial automation modules, building-control I/O nodes, CAN-connected alarm panels, remote sensor and actuator interfaces, and motor or lighting control peripherals. The 8-bit I/O budget is useful when a system needs more discrete signals than the host CAN controller can expose directly. Engineers should verify exact pin functions, electrical limits, and configuration registers against the manufacturer datasheet before final schematic capture.
For reliable PCB use, place the device where all 14 package pins remain accessible, observe the specified 2.7 V to 5.5 V supply range, and validate the CAN transceiver and bus termination separately because the verified source describes the expander, not a complete CAN network solution. This page combines verified product data, procurement links, application guidance, and explicitly limited drop-in replacement information without inventing unverified electrical values.
直接替换替代料： MCP25025-I/P ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料MCP25025-I/P 规格参数
| Product Type | CAN input/output expander |
| Digital I/O | Up to 8 lines |
| PWM Outputs | Up to 2 outputs |
| One-Wire Support | Configurable one-wire line-driver option |
| Clock Frequency | 4 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| CAN Transmit Buffers | 3 |
| CAN Receive Buffers | 2 |
| CAN Masks | 1 |
| CAN Filters | 2 |
| 封装 | 14-DIP, 0.300 in, 7.62 mm |
| Package Type | PDIP through-hole |
| Packaging | Tube |
MCP25025-I/P pdip through-hole 引脚配置指南
MCP25025-I/P（pdip through-hole 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： MCP25025-I/P.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MCP25025-I/P 适用于 6 应用s: Industrial Automation I/O Module, Building Control and Alarm Panel, Remote Sensor and Actuator Node, CAN-Connected Motor Control Module, Lighting and Beacon Control, Legacy Through-Hole Control Platform.
Industrial Automation I/O Module
The MCP25025-I/P fits an industrial automation node that needs up to 8 local digital signals while sharing machine information over CAN. It can place limit-switch inputs, relay-command outputs, status LEDs, and configurable PWM-controlled actuators behind one CAN-connected interface. Its verified 2.7 V to 5.5 V supply range fits common embedded rails, while the 4 MHz clock supports the device's internal communication and configuration functions. The 14-DIP package also simplifies through-hole prototype and repair work. Before release, verify the unprovided operating-temperature range, isolation strategy, EMC performance, exact I/O directions, and external CAN transceiver requirements against the complete system datasheet.
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Building Control and Alarm Panel
The MCP25025-I/P is suitable for a building-control panel that must gather door, occupancy, tamper, or alarm inputs and distribute control signals over a shared CAN network. Up to 8 digital I/O positions provide flexible panel connectivity, while up to 2 PWM outputs can serve compatible indicator or actuator functions. The configurable one-wire option may assist compatible sideband or identification arrangements where the full bus configuration permits it. Because the verified source does not state temperature, isolation, or EMC ratings, installers should evaluate those system-level requirements separately and avoid treating the MCU-level CAN interface as a substitute for field-bus isolation.
推荐
Remote Sensor and Actuator Node
MCP25025-I/P can extend a remote sensing node beyond the GPIO budget of a small microcontroller by connecting discrete digital sensors and actuator command lines through a CAN-oriented expander. Its eight available I/O positions suit multiple limit switches, alarm inputs, relay drives, or status outputs, while two PWM channels add timing flexibility where applicable. The 2.7 V to 5.5 V operating range allows deployment from 3.3 V systems through 5 V legacy electronics, provided every attached circuit shares compatible logic levels. Engineer the external drivers for relay coils, contactors, or high-current loads because the supplied data does not establish output-drive limits.
推荐
CAN-Connected Motor Control Module
The MCP25025-I/P can support a CAN-connected motor-control module by combining digital command and status signals with up to two PWM outputs. A host controller can send operating commands through a compatible CAN controller and transceiver, while the expander handles discrete enable, fault, direction-adjacent, or auxiliary I/O lines. The verified 4 MHz device clock and three transmit buffers, two receive buffers, one mask, and two filters provide resources for structured CAN traffic. PWM timing, polarity, output current, and fault behavior must be confirmed in the manufacturer datasheet before driving motor-control circuits. External gate drivers, protection, and isolation may still be required depending on the motor voltage and fault-containment requirements.
推荐
Lighting and Beacon Control
MCP25025-I/P can act as the network-facing I/O section of a lighting or beacon controller where the system needs multiple discrete outputs and a limited number of dimming channels. Up to 8 digital I/O positions can represent enable commands, operating modes, fault flags, or relay logic, while the two PWM outputs may suit compatible low-power dim functions after datasheet verification. The 2.7 V to 5.5 V supply range permits integration with both 3.3 V and 5 V control electronics. The IC is not assumed to drive lamps directly: relay, transistor, constant-current, thermal, and flyback protection must be selected separately according to the load and automotive or industrial environment.
推荐
Legacy Through-Hole Control Platform
MCP25025-I/P is a practical fit when maintaining or prototyping a legacy 14-DIP control platform rather than redesigning around a surface-mount IC. The 0.300-inch, 7.62 mm PDIP package can be socketed, visually inspected, and replaced more easily than a fine-pitch surface-mount device. Engineers can add eight digital I/O positions, PWM resources, and CAN-related buffers to an existing architecture without moving to a new footprint. Supply decoupling, clock requirements, unused-pin treatment, and programming or configuration procedures must follow the current manufacturer documentation. For high-volume new equipment, a smaller surface-mount option may reduce board area, but no verified surface-mount equivalent was established for this exact MPN.
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推荐产品汇总
工程参考数据： MCP25025-I/P ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | 14-DIP, 0.300 in, 7.62 mm |
| Brand | Microchip Technology |
| Product Type | CAN input/output expander |
| Digital I/O | Up to 8 lines |
| PWM Outputs | Up to 2 outputs |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Clock Frequency | 4 MHz |
| CAN Transmit Buffers | 3 |
| CAN Receive Buffers | 2 |
| Masks and Filters | 1 mask and 2 filters |
| One-Wire Feature | Configurable one-wire line-driver option |
| Verified Unit Price | $1.5265 starting price as of 2026-10-22 |
设计说明
Design the MCP25025-I/P rail only within its verified 2.7 V to 5.5 V supply range. Place the required bypass capacitor at the device's supply and ground pins, and keep the return path close to high-frequency switching current. Because capacitor values, absolute maximum ratings, and timing requirements were not included in the verified search data, select them from the manufacturer datasheet rather than copying generic values from another interface IC.
Treat the 14-DIP as a fixed, non-miniaturized through-hole footprint and preserve adequate spacing around adjacent components. If a maintenance-friendly socket is used, verify its pin length and contact quality against the assembled board stack-up. The supplied sources do not contain a verified land pattern or complete pin map, so do not fabricate artwork from package width alone; obtain the manufacturer drawing first.
Do not treat MCP25025-I/P as a standalone CAN physical-layer transceiver, and do not assume a similarly named Microchip controller is pin-compatible. A practical node needs the appropriate logic-side CAN controller or system controller, a suitable transceiver, bus termination, and fault analysis. Also confirm I/O direction and output-drive limits before attaching relays, lamps, or motor circuitry.
合规信息
The supplied verified snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred from the manufacturer name or package type.
