Overview
The SP3485EN-L is a 3.3V low power half-duplex transceiver produced by MaxLinear, Inc., designed to meet the specifications of the RS-485 and RS-422 serial protocols. This device operates at data rates up to 10 Mbps and is encapsulated in a small outline 8-pin SOIC package. It integrates both transmitter and receiver functions, making it efficient for use in modern digital systems. The SP3485EN-L is part of a family of transceivers that are pin-to-pin compatible with other MaxLinear devices and popular industry standards, such as the SP481, SP483, and SP485.
Key Specifications
| Parameter | Value | Units | Conditions |
|---|---|---|---|
| Data Rate | 10 | Mbps | - |
| Supply Voltage | 3.135 to 3.465 | V | - |
| Operating Temperature Range | -40 to +85 | °C | - |
| Duplex | Half-Duplex | - | - |
| Number of Drivers | 1 | - | - |
| Number of Receivers | 1 | - | - |
| Supply Current | 425 µA | - | - |
| Power Dissipation | 0.6 W | - | - |
| ESD Voltage-Max | ±2 kV | - | - |
| Common-Mode Input Voltage Range | -7 to +12 | V | - |
| Package Style | SOIC-8N | - | - |
| Mounting Method | Surface Mount | - | - |
Key Features
- RS-485 and RS-422 transceiver
- Operates from a single +3.3V supply
- Interoperable with +5.0V logic
- Driver/Receiver Enable
- -7V to +12V Common-Mode Input Voltage Range
- Allows up to 32 transceivers on the serial bus
- Compatibility with the industry standard 75176 pinout
- Driver Output Short-Circuit Protection
- Differential Schmitt trigger input for enhanced noise immunity
- Low Power Shutdown Mode (though specific to SP3481, similar functionality can be inferred for power management)
Applications
- Consumer Electronics: Home automation systems where reliable data transmission is crucial for device coordination and remote operation.
- Energy and Power Systems: Communication between monitoring systems and central controllers in power generation plants, benefiting from its industrial temperature range and noise resistance.
- Entertainment and Gaming: Gaming consoles and entertainment systems requiring high-speed data transmission for smooth and reliable gameplay and multimedia experiences.
- Communication and Networking: Network equipment such as routers, switches, and modems, where differential data transmission is necessary to minimize noise and maximize data integrity.
Q & A
- What is the data rate of the SP3485EN-L transceiver?
The SP3485EN-L transceiver supports data rates up to 10 Mbps.
- What is the operating voltage of the SP3485EN-L?
The SP3485EN-L operates from a single +3.3V supply.
- What is the operating temperature range of the SP3485EN-L?
The operating temperature range is -40°C to +85°C.
- How many transceivers can be on the serial bus with the SP3485EN-L?
Up to 32 transceivers can be on the serial bus.
- Does the SP3485EN-L support both RS-485 and RS-422 protocols?
Yes, the SP3485EN-L supports both RS-485 and RS-422 serial protocols.
- What is the common-mode input voltage range of the SP3485EN-L?
The common-mode input voltage range is -7V to +12V.
- Is the SP3485EN-L compatible with +5.0V logic?
Yes, the SP3485EN-L is interoperable with +5.0V logic.
- What kind of protection does the SP3485EN-L have for driver outputs?
The SP3485EN-L has driver output short-circuit protection.
- What is the package style of the SP3485EN-L?
The package style is SOIC-8N.
- Is the SP3485EN-L RoHS compliant?
Yes, the SP3485EN-L is RoHS compliant and also meets other environmental standards like REACH and TSCA.
