Overview
The ADM1487EARZ-REEL7 is a high-performance RS-422/RS-485 transceiver manufactured by Analog Devices Inc. This integrated circuit is designed for balanced data transmission and complies with Telecommunication Industry Association/Electronics Industries Association (TIA/EIA) standards for RS-485 and RS-422 protocols. It is optimized for half-duplex communication on multipoint bus transmission lines, making it suitable for various industrial and telecommunications applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Supply Voltage | 5 | V | ± 5% |
| Operating Temperature | -40 to 85 | °C | Industrial temperature range |
| Data Rate | 2.5 | Mbps | Half-duplex mode |
| ESD Protection | ±15 kV | Human body model | |
| Package Type | 8-lead SOIC | Standard Small Outline Package | |
| Receiver Input Impedance | 1/4 unit load | Allows up to 128 transceivers on a bus | |
| Common-mode Input Range | -7 to +12 | V | |
| Driver Propagation Delay | 10 to 60 | ns | Input to output, low to high and high to low |
Key Features
- TIA/EIA Compliance: Complies with TIA/EIA standards for RS-485 and RS-422 protocols.
- High Data Rate: Supports data rates up to 2.5 Mbps in half-duplex mode.
- ESD Protection: Offers ±15 kV ESD protection on RS-485 I/O pins.
- Low EMI: Reduced slew rates to minimize electromagnetic interference (EMI).
- Thermal Shutdown and Short-Circuit Protection: Prevents excessive power dissipation due to bus contention or output shorting.
- Industrial Temperature Range: Operates between -40°C and 85°C, making it suitable for harsh environments.
- Compact Packaging: Available in an 8-lead SOIC package.
Applications
- Telecommunications: Used in various telecommunication systems for reliable data transmission.
- Industrial Control: Suitable for industrial control systems due to its robust performance and ESD protection.
- Energy/Power Metering: Applied in energy and power metering systems for accurate data transmission.
- Lighting Systems: Used in lighting control systems for efficient and reliable communication.
- Security Systems: Employed in security systems to ensure secure and reliable data transmission.
- Instrumentation: Used in various instrumentation applications requiring precise data communication.
Q & A
- What is the ADM1487EARZ-REEL7 used for?
The ADM1487EARZ-REEL7 is used for RS-422/RS-485 communication in various applications such as telecommunications, industrial control, energy/power metering, and more.
- What are the key features of the ADM1487EARZ-REEL7?
Key features include TIA/EIA compliance, high data rates up to 2.5 Mbps, ±15 kV ESD protection, reduced EMI, thermal shutdown and short-circuit protection, and an industrial temperature range.
- What is the operating temperature range of the ADM1487EARZ-REEL7?
The operating temperature range is -40°C to 85°C.
- What type of package does the ADM1487EARZ-REEL7 come in?
The ADM1487EARZ-REEL7 comes in an 8-lead SOIC package.
- How many transceivers can be connected on a bus using the ADM1487EARZ-REEL7?
Up to 128 transceivers can be connected on a bus due to its 1/4 unit load receiver input impedance.
- What is the common-mode input range of the ADM1487EARZ-REEL7?
The common-mode input range is -7 V to +12 V.
- Does the ADM1487EARZ-REEL7 have ESD protection?
Yes, it has ±15 kV ESD protection on RS-485 I/O pins.
- What are some applications of the ADM1487EARZ-REEL7?
Applications include telecommunications, industrial control, energy/power metering, lighting systems, security systems, and instrumentation.
- Is the ADM1487EARZ-REEL7 suitable for automotive applications?
No, the specific model ADM1487EARZ-REEL7 is not qualified for automotive applications, although other models like ADM487EW are.
- What is the data rate capability of the ADM1487EARZ-REEL7?
The data rate capability is up to 2.5 Mbps in half-duplex mode.
