Overview
The LTC2855HDE#PBF is a low-power, high-speed RS485/RS422 transceiver designed and manufactured by Analog Devices Inc. This component operates on a 3.3V supply and is capable of achieving data rates up to 20Mbps. It is part of the LTC2854 and LTC2855 family, known for their robust performance and advanced features such as logic-selectable 120Ω termination resistors and enhanced ESD protection.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage (VCC) | 3.0V to 3.6V | V |
| Maximum Data Rate | 20Mbps | Mbps |
| Differential Driver Output Voltage (|VOD|) | 1.5 to 2 VCC | V |
| ESD Protection | ±15kV (Human Body Model) | kV |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package Type | 12-Lead (4mm × 3mm) Plastic DFN | |
| Logic Input Voltages (RE, DE, DI, TE) | –0.3V to 7V | V |
| Interface I/O Voltage Range | (VCC –15V) to +15V (A-B) or (B-A) with Terminator Enabled | V |
Key Features
- Low power consumption
- Logic-selectable 120Ω termination resistor
- Enhanced ESD protection up to ±15kV (Human Body Model)
- High input impedance supporting up to 256 nodes
- Guaranteed failsafe receiver operation over the entire common mode range
- Current limited drivers and thermal shutdown
- Delayed micropower shutdown
Applications
The LTC2855HDE#PBF is suitable for a variety of applications, including industrial automation, automotive interfaces, backplane communications, and any system requiring reliable, high-speed RS485/RS422 communication. It is particularly useful in environments that demand robust ESD protection and high node count support.
Q & A
- What is the maximum data rate of the LTC2855HDE#PBF?
The maximum data rate is 20Mbps. - What is the supply voltage range for the LTC2855HDE#PBF?
The supply voltage range is 3.0V to 3.6V. - What level of ESD protection does the LTC2855HDE#PBF offer?
The LTC2855HDE#PBF offers ±15kV ESD protection (Human Body Model). - What is the operating temperature range of the LTC2855HDE#PBF?
The operating temperature range is –40°C to 125°C. - Does the LTC2855HDE#PBF have built-in termination resistors?
Yes, it includes a logic-selectable 120Ω termination resistor. - How many nodes can the LTC2855HDE#PBF support?
It can support up to 256 nodes. - What type of package does the LTC2855HDE#PBF come in?
The LTC2855HDE#PBF comes in a 12-Lead (4mm × 3mm) Plastic DFN package. - Does the LTC2855HDE#PBF have thermal shutdown protection?
Yes, it includes current limited drivers and thermal shutdown protection. - What is the purpose of the delayed micropower shutdown feature?
The delayed micropower shutdown feature helps in reducing power consumption when the device is not in use. - Is the LTC2855HDE#PBF suitable for industrial applications?
Yes, it is highly suitable for industrial applications due to its robust performance and high ESD protection.
