LTC485CN8

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LTC485CN8

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RS-485 Interface IC LTC485 - Low Power RS485 Interface Transceiver

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사양

속성 가치

개요

Description

The LTC485CN8 is a low-power differential bus transceiver designed for RS-485/RS-422 communication. It features half-duplex operation, supporting data rates up to 2.5Mbps.
Key characteristics:
- Low power: Consumes 300µA (max) in shutdown mode.
- Wide supply range: Operates from 4.75V to 5.25V.
- Robust ESD protection: ±15kV (Human Body Model).
- Thermal shutdown: Prevents damage during faults.
The IC includes a driver and receiver, enabling bidirectional communication over long distances (up to 1200m at lower speeds). It is commonly used in industrial networks, automotive systems, and multipoint data transmission.
Packaged in an 8-pin PDIP, the LTC485CN8 is pin-compatible with industry-standard RS-485 transceivers like the SN75176.
For detailed specs, refer to the datasheet by Analog Devices (now part of Linear Technology).

Equivalent

The LTC485CN8 is a low-power RS485/RS422 transceiver. Equivalent products include:
- MAX485 (Maxim Integrated)
- SN65HVD72 (Texas Instruments)
- ADM485 (Analog Devices)
- SP485 (Sipex/Exar)
- DS485 (Maxim Integrated)
These chips offer similar functionality for RS485/RS422 communication, with variations in speed, power consumption, and additional features. Always check datasheets for exact compatibility.

Pinout

The LTC485CN8 is an 8-pin (DIP or SOIC package) RS-485/RS-422 transceiver. Key functions include:
- Half-duplex communication.
- Driver (Tx) and receiver (Rx) with differential I/O (A, B for bus lines).
- Driver enable (DE) and receiver enable (RE) control pins.
- 5V single-supply operation.
- Up to 10Mbps data rate.
Pinout summary:
1. RO (Receiver Output)
2. RE (Receiver Enable, active low)
3. DE (Driver Enable)
4. DI (Driver Input)
5. GND
6. A (Non-inverting bus I/O)
7. B (Inverting bus I/O)
8. VCC (5V)
Used for robust long-distance serial communication in industrial/embedded systems.

Application

The LTC485CN8 is a low-power RS-485/RS-422 transceiver commonly used in:
1. Industrial Automation – Long-distance communication in noisy environments.
2. Building Automation – HVAC, lighting, and security systems.
3. Telecommunications – Data transmission over balanced lines.
4. Instrumentation – Reliable signal transfer in test equipment.
5. Motor Control – Interface for industrial motor drives.
6. Networking – Multi-drop RS-485 networks.
It supports half/full-duplex operation, features ESD protection, and operates with low power, making it ideal for robust, energy-efficient applications.

Package

The LTC485CN8 is an 8-pin PDIP (Plastic Dual In-Line Package). It's a low-power RS485/RS422 transceiver designed for half-duplex communication. The PDIP package is through-hole mountable, making it suitable for prototyping and industrial applications. Its compact size and robust design ensure reliable performance in noisy environments.

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