LTC1480IS8#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: LTC1480IS8#PBF is a low power RS485 transceiver designed for half-duplex communication over long distances. It is commonly used in industrial automation, building automation, and other applications where reliable data transmission is required.

Characteristics: - Low power consumption - High noise immunity - Wide operating voltage range - Half-duplex communication - Supports up to 32 nodes on the bus

Package: LTC1480IS8#PBF is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The essence of LTC1480IS8#PBF lies in its ability to provide robust and efficient communication between multiple devices over long distances.

Packaging/Quantity: LTC1480IS8#PBF is typically sold in reels containing 250 units.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Data Rate: Up to 250 kbps
• Operating Temperature Range: -40°C to +85°C
• Receiver Input Impedance: 12 kΩ
• Driver Output Impedance: 96 Ω
• Maximum Bus Length: 1200 meters

Pin Configuration

LTC1480IS8#PBF features the following pin configuration:

```

---

| | --| VCC |-- --| B |-- --| A |-- --| GND |-- --| Y |-- --| Z |-- --| RE |-- |___________| ```

1. VCC: Power supply input
2. B: Non-inverting driver output
3. A: Inverting driver output
4. GND: Ground
5. Y: Non-inverting receiver input
6. Z: Inverting receiver input
7. RE: Receiver output enable

Functional Features

• Half-duplex communication: LTC1480IS8#PBF allows bidirectional data transmission on a single pair of wires, enabling efficient use of the communication channel.
• Built-in fail-safe receiver: The receiver input is designed to provide a high level of noise immunity and can detect bus idle conditions.
• Low power consumption: The IC operates in low-power mode when not actively transmitting or receiving data, making it suitable for battery-powered applications.
• Thermal shutdown protection: The device includes thermal shutdown circuitry to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Robust communication over long distances - High noise immunity - Wide operating voltage range - Low power consumption - Fail-safe receiver for reliable data reception

Disadvantages: - Limited data rate compared to some other transceiver options - Requires external pull-up resistors for proper bus termination

Working Principles

LTC1480IS8#PBF uses differential signaling to transmit and receive data. It employs a balanced line driver and receiver to minimize the effects of common-mode noise and improve noise immunity. The driver converts logic-level signals into differential voltages, while the receiver detects and amplifies the differential signals back into logic-level signals.

The transceiver operates in half-duplex mode, allowing bidirectional communication on a single pair of wires. It incorporates a fail-safe receiver that ensures a known output state when the bus is idle or disconnected.

Detailed Application Field Plans

LTC1480IS8#PBF finds extensive application in various fields, including: 1. Industrial automation systems 2. Building automation and control networks 3. Process control and monitoring systems 4. HVAC (Heating, Ventilation, and Air Conditioning) systems 5. Energy management systems 6. Security and access control systems

Detailed and Complete Alternative Models

1. MAX485: A popular alternative to LTC1480IS8#PBF, offering similar features and performance.
2. SN75176: Another widely used RS485 transceiver with comparable specifications.
3. ADM485: A low power RS485 transceiver with enhanced ESD protection.

These alternative models can be considered based on specific application requirements and availability.

Word count: 529 words