Overview
The MAX485ESA+ is a low-power transceiver designed for RS-485 and RS-422 communication, manufactured by Analog Devices Inc./Maxim Integrated. This device is part of the MAX485 family, known for its high performance and reliability in various communication applications. It features a single 5 V supply, making it suitable for a wide range of industrial and commercial environments. The MAX485ESA+ is fabricated using advanced mixed technology, combining low power CMOS with fast switching bipolar technology, ensuring high-speed data transmission and minimal power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | - | - | 12 | V | - |
| Data Rate | - | - | 2.5 Mbps | - | - |
| Differential Output Voltage (VOD) | 1.5 | - | 5.0 | V | R = 27 Ω or 50 Ω |
| Common-Mode Output Voltage (VOC) | - | - | 3 | V | R = 27 Ω or 50 Ω |
| Driver Propagation Delay | - | 200 | 800 | ns | RDIFF = 54Ω, CL1 = CL2 = 100pF |
| Receiver Propagation Delay | - | 200 | 800 | ns | RDIFF = 54Ω, CL1 = CL2 = 100pF |
| Supply Current | 120 | - | 500 | μA | Unloaded or fully loaded with disabled drivers |
Key Features
- Meets EIA RS-485 and RS-422 standards
- Low power consumption: 120 μA to 500 μA supply current
- High-speed data transmission up to 2.5 Mbps
- Slew-rate-limited drivers to minimize EMI and reduce reflections
- Fail-safe receiver output: logic high if inputs are unconnected (floating)
- High output impedance when disabled or powered down
- ESD protection: ±15 kV HBM (Human Body Model)
- Available in 8-lead SOIC package
- Operates over a wide common-mode voltage range: -7 V to +12 V
Applications
- Industrial control systems
- Local area networks
- Point-of-sale terminals
- Security systems
- Building automation
- Medical devices requiring reliable communication
Q & A
- What is the MAX485ESA+ used for?
The MAX485ESA+ is used for RS-485 and RS-422 communication in various industrial and commercial applications.
- What is the data rate of the MAX485ESA+?
The MAX485ESA+ supports data rates up to 2.5 Mbps.
- What is the supply voltage range for the MAX485ESA+?
The supply voltage range is up to 12 V.
- Does the MAX485ESA+ have ESD protection?
- What is the common-mode voltage range for the MAX485ESA+?
The common-mode voltage range is -7 V to +12 V.
- What type of packages is the MAX485ESA+ available in?
- How many transceivers can be connected on a bus?
- What is the fail-safe feature of the receiver?
- Does the MAX485ESA+ have thermal shutdown protection?
- What is the typical supply current of the MAX485ESA+?
