ISL32457EIUZ-T7A

Product Overview

Category: Integrated Circuit (IC)

Use: The ISL32457EIUZ-T7A is a high-speed, low-power, differential line transceiver designed for RS-485 and RS-422 communication applications. It provides robust data transmission over long distances in noisy industrial environments.

Characteristics: - High-speed data rates up to 20 Mbps - Low power consumption - Wide common-mode voltage range (-7V to +12V) - Enhanced ESD protection - Industrial temperature range (-40°C to +85°C)

Package: The ISL32457EIUZ-T7A is available in a small 16-lead QFN package, which offers space-saving advantages and ease of integration into various electronic systems.

Essence: This IC serves as a reliable interface between microcontrollers or other digital devices and the RS-485/RS-422 bus, enabling secure and efficient data communication.

Packaging/Quantity: The ISL32457EIUZ-T7A is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Operating Current: 300µA (typical)
• Shutdown Current: 1µA (typical)
• Receiver Input Voltage Range: -7V to +12V
• Driver Output Voltage Swing: ±2.4V
• Common-Mode Output Voltage: 1.5V (typical)
• ESD Protection: ±15kV (Human Body Model)

Pin Configuration

The ISL32457EIUZ-T7A features a 16-pin QFN package with the following pin configuration:

```

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| | | 1 16 | | | | 2 15 | | | | 3 14 | | | | 4 13 | | | | 5 12 | | | | 6 11 | | | | 7 10 | | | | 8 9 | |_______________| ```

Functional Features

• Half-duplex RS-485/RS-422 transceiver
• Integrated fail-safe receiver
• Enhanced ESD protection for robust communication in harsh environments
• Low power consumption for energy-efficient operation
• Wide common-mode voltage range for flexibility in various applications

Advantages and Disadvantages

Advantages: - High-speed data transmission up to 20 Mbps - Reliable performance in noisy industrial environments - Small package size for space-saving integration - Wide operating temperature range for versatility

Disadvantages: - Limited to half-duplex communication - Requires external components for complete functionality

Working Principles

The ISL32457EIUZ-T7A operates as a half-duplex transceiver, allowing bidirectional communication over a single twisted-pair cable. It employs differential signaling to provide noise immunity and extends the reach of data transmission. The integrated fail-safe receiver ensures that the bus remains in a known state when no driver is active.

Detailed Application Field Plans

The ISL32457EIUZ-T7A finds application in various industries, including: 1. Industrial automation systems 2. Building automation and control networks 3. HVAC (Heating, Ventilation, and Air Conditioning) systems 4. Security systems 5. Energy management systems 6. Process control equipment 7. Instrumentation and measurement devices

Its robustness, high-speed capabilities, and wide operating temperature range make it suitable for demanding environments where reliable data communication is critical.

Detailed and Complete Alternative Models

1. MAX485E
2. SN65HVD485E
3. LTC2850
4. ADM2485
5. SP3485

These alternative models offer similar functionality and can be considered as substitutes for the ISL32457EIUZ-T7A in various applications.

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