Specifications
| Attribute | Value |
| Package | Tube |
| ProductStatus | Active |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| NumberofDrivers/Receivers | 1/1 |
| Duplex | Half |
| ReceiverHysteresis | 70 mV |
| DataRate | 2.5Mbps |
| Voltage-Supply | 4.75V ~ 5.25V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Through Hole |
| Package/Case | 8-DIP (0.300, 7.62mm) |
Overview
Description
The MAX485EPA+ is a low-power, half-duplex RS-485/RS-422 transceiver designed by Maxim Integrated. It is used for serial communication over long distances and is particularly suitable for applications requiring differential signaling to minimize noise. The device operates on a single 5V supply and features a low power consumption mode, drawing only 300 µA, making it ideal for power-sensitive applications.
The MAX485EPA+ supports a data transfer rate of up to 2.5 Mbps and can drive up to 32 unit loads on the bus, allowing for multiple devices to be connected. It has a common-mode range of -7V to +12V, ensuring reliable operation in electrically noisy environments. The device includes a 1/8th-unit load receiver input, allowing more transceivers on the same bus.
Key features include a 1/8th unit load input impedance, slew-rate-limited drivers to reduce EMI, thermal shutdown protection, and short-circuit protection. Its compact 8-pin DIP package makes it easy to integrate into various designs, offering reliability for industrial, commercial, and consumer applications.
The MAX485EPA+ supports a data transfer rate of up to 2.5 Mbps and can drive up to 32 unit loads on the bus, allowing for multiple devices to be connected. It has a common-mode range of -7V to +12V, ensuring reliable operation in electrically noisy environments. The device includes a 1/8th-unit load receiver input, allowing more transceivers on the same bus.
Key features include a 1/8th unit load input impedance, slew-rate-limited drivers to reduce EMI, thermal shutdown protection, and short-circuit protection. Its compact 8-pin DIP package makes it easy to integrate into various designs, offering reliability for industrial, commercial, and consumer applications.
Equivalent
Equivalent products to the MAX485EPA+ chip, which is a low-power RS-485/RS-422 transceiver, include:
1. Texas Instruments SN75176B
2. Texas Instruments SN65HVD1780
3. Analog Devices ADM485
4. STMicroelectronics ST485
5. NXP Semiconductors PCA82C250
6. ON Semiconductor NCV75176B
These alternatives offer similar functionalities and can be used in applications requiring differential data transmission over long distances. Always verify electrical specifications and pin configurations for compatibility with your design.
1. Texas Instruments SN75176B
2. Texas Instruments SN65HVD1780
3. Analog Devices ADM485
4. STMicroelectronics ST485
5. NXP Semiconductors PCA82C250
6. ON Semiconductor NCV75176B
These alternatives offer similar functionalities and can be used in applications requiring differential data transmission over long distances. Always verify electrical specifications and pin configurations for compatibility with your design.
Features
The MAX485EPA+ is a low-power transceiver for RS-485 and RS-422 communication protocols. Key features include:
1. Low Power Consumption: It operates with a low quiescent current, making it suitable for power-sensitive applications.
2. Wide Voltage Range: It supports a supply voltage range of 4.75V to 5.25V.
3. High Data Rates: Capable of data rates up to 2.5 Mbps, suitable for fast communication needs.
4. Fail-Safe: The receiver outputs a logic-high for open or shorted input conditions.
5. ESD Protection: Offers electrostatic discharge protection to enhance reliability.
6. Half-Duplex Operation: It supports half-duplex communication, allowing bidirectional data transfer using a single twisted pair.
7. Extended Temperature Range: Operates over a wide temperature range, typically from -40°C to +85°C.
8. Small Footprint: The 8-pin PDIP package is compact, suitable for space-constrained designs.
9. Industry Compatibility: Compatible with industry-standard RS-485 and RS-422 devices.
These features make it ideal for industrial, telecommunications, and instrumentation applications.
1. Low Power Consumption: It operates with a low quiescent current, making it suitable for power-sensitive applications.
2. Wide Voltage Range: It supports a supply voltage range of 4.75V to 5.25V.
3. High Data Rates: Capable of data rates up to 2.5 Mbps, suitable for fast communication needs.
4. Fail-Safe: The receiver outputs a logic-high for open or shorted input conditions.
5. ESD Protection: Offers electrostatic discharge protection to enhance reliability.
6. Half-Duplex Operation: It supports half-duplex communication, allowing bidirectional data transfer using a single twisted pair.
7. Extended Temperature Range: Operates over a wide temperature range, typically from -40°C to +85°C.
8. Small Footprint: The 8-pin PDIP package is compact, suitable for space-constrained designs.
9. Industry Compatibility: Compatible with industry-standard RS-485 and RS-422 devices.
These features make it ideal for industrial, telecommunications, and instrumentation applications.
Pinout
The MAX485EPA+ is an 8-pin IC used for RS-485/RS-422 communication. It is designed for low-power and low-speed (up to 2.5 Mbps) applications. The pinout and functions are as follows:
1. RO (Receiver Output): Output for the received data.
2. RE̅ (Receiver Output Enable): Active-low input; enables the receiver output when low.
3. DE (Driver Output Enable): Enables the driver outputs when high.
4. DI (Driver Input): Input for data to be transmitted.
5. GND: Ground reference for the device.
6. A (Non-inverting Receiver Input/Driver Output): Connects to the transmission line.
7. B (Inverting Receiver Input/Driver Output): Connects to the transmission line.
8. VCC: Supply voltage input (Typical: +5V).
The MAX485EPA+ operates as both a transmitter and receiver, facilitating full-duplex communication over a twisted pair. It supports up to 32 transceivers on the bus. Due to its low power consumption, it's suitable for battery-powered and power-sensitive applications.
1. RO (Receiver Output): Output for the received data.
2. RE̅ (Receiver Output Enable): Active-low input; enables the receiver output when low.
3. DE (Driver Output Enable): Enables the driver outputs when high.
4. DI (Driver Input): Input for data to be transmitted.
5. GND: Ground reference for the device.
6. A (Non-inverting Receiver Input/Driver Output): Connects to the transmission line.
7. B (Inverting Receiver Input/Driver Output): Connects to the transmission line.
8. VCC: Supply voltage input (Typical: +5V).
The MAX485EPA+ operates as both a transmitter and receiver, facilitating full-duplex communication over a twisted pair. It supports up to 32 transceivers on the bus. Due to its low power consumption, it's suitable for battery-powered and power-sensitive applications.
Manufacturer
The MAX485EPA+ is manufactured by Analog Devices, Inc. This company is a multinational corporation specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. These components are widely used in a variety of applications, including communications, industrial automation, automotive, consumer electronics, and healthcare. Analog Devices is known for its innovation and leadership in the semiconductor industry, providing solutions that bridge the physical and digital worlds.
Application
The MAX485EPA+ is a low-power transceiver for RS-485 and RS-422 communication applications. Its key application areas include:
1. Industrial Automation: Used in communication between programmable logic controllers (PLCs) and other industrial devices.
2. Data Communication: Facilitates long-distance data transmission in network systems.
3. Building Automation: Employed in systems like HVAC controls and security systems.
4. Embedded Systems: Used in microcontroller-based communication for reliable data transfer.
5. Telecommunications: Supports transmission over twisted pair cables.
6. Remote Metering: Enables data exchange in remote monitoring systems.
Its low power consumption and high data rate support make it suitable for power-sensitive applications.
1. Industrial Automation: Used in communication between programmable logic controllers (PLCs) and other industrial devices.
2. Data Communication: Facilitates long-distance data transmission in network systems.
3. Building Automation: Employed in systems like HVAC controls and security systems.
4. Embedded Systems: Used in microcontroller-based communication for reliable data transfer.
5. Telecommunications: Supports transmission over twisted pair cables.
6. Remote Metering: Enables data exchange in remote monitoring systems.
Its low power consumption and high data rate support make it suitable for power-sensitive applications.
Package
The MAX485EPA+ is a low-power, RS-485/RS-422 transceiver. It typically comes in an 8-pin PDIP (Plastic Dual In-line Package) package type.
