Overview
The LTC2865IDE#TRPBF, produced by Analog Devices Inc., is a low-power, high-reliability RS485/RS422 transceiver designed to operate in harsh environments. This device is part of the LTC2862/LTC2863/LTC2864/LTC2865 family and is distinguished by its ability to withstand overvoltage faults up to ±60V, making it ideal for applications where electrical noise and ground loop voltages are significant concerns.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 5.5 | V | ||
| Maximum Data Rate | High Speed (SLO High) | 20 | Mbps | ||
| Maximum Data Rate | Slew Rate Limited (SLO Low) | 250 | kbps | ||
| Differential Driver Output Voltage (|VOD|) | R = 27Ω | 1.5 | V | ||
| Differential Driver Output Voltage (|VOD|) | R = 50Ω | 2 | V | ||
| Receiver Output High Voltage (VOH) | I(RO) = -3mA, VL ≥ 2.25V | VCC - 0.4 | V | ||
| Receiver Output Low Voltage (VOL) | I(RO) = 3mA | 0.4 | V | ||
| ESD Protection | Interface Pins | ±15kV | |||
| ESD Protection | All Other Pins | ±8kV | |||
| Common Mode Range | -25 | 25 | V |
Key Features
- Protected from overvoltage line faults up to ±60V, enhancing reliability in harsh environments.
- Operates on a supply voltage range of 3V to 5.5V.
- Supports data rates of up to 20Mbps in high-speed mode and 250kbps in slew rate limited mode.
- Extended common mode range of ±25V, improving data communication reliability in electrically noisy environments.
- Guaranteed failsafe receiver operation and high input impedance to support up to 256 nodes.
- ±15kV ESD protection on interface pins and ±8kV on all other pins.
- Flexible digital interface with a logic supply pin (VL) that can range from 1.65V to 5.5V.
Applications
The LTC2865IDE#TRPBF is suitable for various applications requiring robust and reliable serial communication, including:
- Industrial automation and control systems.
- Automotive systems, particularly those requiring high reliability and resistance to electrical noise.
- Telecommunications and networking equipment.
- Medical devices and equipment that demand high reliability and safety.
- Any environment where ground loop voltages and electrical noise are significant concerns.
Q & A
- What is the maximum overvoltage protection offered by the LTC2865IDE#TRPBF?
The LTC2865IDE#TRPBF offers overvoltage protection up to ±60V. - What are the supported data rates for this transceiver?
The device supports data rates of up to 20Mbps in high-speed mode and 250kbps in slew rate limited mode. - What is the supply voltage range for the LTC2865IDE#TRPBF?
The supply voltage range is from 3V to 5.5V. - What is the common mode range of the LTC2865IDE#TRPBF?
The common mode range is ±25V. - How many nodes can the LTC2865IDE#TRPBF support?
The device can support up to 256 nodes due to its high input impedance. - What level of ESD protection does the LTC2865IDE#TRPBF offer?
The device offers ±15kV ESD protection on interface pins and ±8kV on all other pins. - Is the LTC2865IDE#TRPBF compatible with both RS422 and RS485 standards?
Yes, the device is compatible with both RS422 and RS485 standards. - What is the logic supply voltage range for the digital interface?
The logic supply pin (VL) can range from 1.65V to 5.5V. - Does the LTC2865IDE#TRPBF have failsafe receiver operation?
Yes, the device has guaranteed failsafe receiver operation. - In what types of environments is the LTC2865IDE#TRPBF particularly useful?
The device is particularly useful in environments with significant electrical noise and ground loop voltages.
