MaxLinear, Inc. SP485EEN-L/TR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | RoHS Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mfr | MaxLinear, Inc. |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Type | Transceiver |
| Data Rate | 10Mbps |
| Receiver Hysteresis | 20 mV |
| Supplier Device Package | 8-SOIC |
| Voltage - Supply | 4.75V ~ 5.25V |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | SP485 |
| Standard Package | 2,500 |
| ECCN | 5A991 |
| HTSUS | 8542.39.0001 |
SP485EEN-L/TR: Half-Duplex RS-485 Transceiver Overview
The SP485EEN-L/TR is a low-power, half-duplex RS-485 transceiver designed by Sipex (now part of Exar/MaxLinear) for robust industrial communication. Housed in a compact 8-pin SOIC package, this device enables bidirectional data transmission over balanced twisted-pair cables, supporting distances up to 1,200 meters at data rates of 10 Mbps. Operating on a single +3.3 V to +5.5 V supply, it features a ±15 kV ESD-protected receiver input and ±15 kV ESD-protected driver output, ensuring reliability in harsh electromagnetic environments. The SP485EEN-L/TR includes a high-impedance driver disable function, allowing multiple devices to share a single bus without contention, and a thermal shutdown feature to prevent overheating during overload conditions.
SP485EEN-L/TR Key Features and Technical Specifications
● High Data Rate: Supports up to 10 Mbps communication, making it suitable for fast industrial networks.
● Low Power Consumption: Operates at 300 μA (typical) in shutdown mode and 1.2 mA (typical) in idle mode, extending battery life in portable applications.
● Robust Protection: Includes ±15 kV ESD protection on all pins (IEC 61000-4-2 standard), ±60 V fault protection on receiver inputs, and thermal shutdown at 150°C.
● Driver Control: Enables high-impedance state via the DE (Driver Enable) pin, allowing multiple drivers on the bus without conflicts.
● Bus Termination: Built-in hot-swap circuitry prevents glitches during live insertion/removal, and the receiver features a 1/8 unit-load input impedance, supporting up to 256 transceivers on a single bus.
● Temperature Range: Operates reliably from -40°C to +85°C, suitable for industrial and outdoor deployments.
Applications and Selection Advantages
1. Industrial Automation: Used in PLCs, HMI systems, and factory automation networks for robust data exchange.
2. Building Automation: Enables HVAC control, lighting systems, and security networks over extended distances.
3. Energy Management: Critical for smart grid meters, solar inverters, and EV charging stations where noise immunity is essential.
4. Transportation: Deployed in railway signaling, traffic control systems, and fleet management for harsh environmental conditions.
5. Pro AV & Security: Supports IP cameras, access control systems, and audio distribution networks with noise-resistant signaling.
Alternative Models and Key Differences
● MAX485ESA+ (Maxim Integrated): A classic RS-485 transceiver with ±15 kV ESD protection, 2.5 Mbps data rate, and 32-unit load support, but lacks hot-swap features.
● SN75176BDR (Texas Instruments): Offers ±15 kV ESD protection, 5 Mbps data rate, and industrial temperature range, but consumes higher power (1.5 mA idle).
● ISL3152EIBZ (Intersil/Renesas): A 3.3 V-only transceiver with ±15 kV ESD, 50 Mbps data rate, and enhanced driver slew-rate control for EMI reduction.
● SP3485EN-L/TR (Exar/MaxLinear): A pin-compatible alternative with lower power (900 μA idle) and enhanced receiver hysteresis for noisy environments.
