MAX3490AEGSA+ Maxim Integrated Integrated Circuit (Small Outline Packages) In Stock
The MAX3490AEGSA+ is a Maxim Integrated RS-485/RS-422 line transceiver powered at 3.3V with ±20kV ESD protection and 20 Mbps data rate. It features a differential Schmitt trigger input and slew-rate limiting to reduce EMI in an 8-pin SOIC package. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Maxim Integrated
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MAX3490AEGSA+ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.3356(MOQ 1)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3.3V supply operation with ±20kV ESD protection on bus pins, exceeding standard RS-485 requirements for robust field installations
- 20 Mbps maximum data rate with slew-rate-limited option for EMI-friendly long-cable RS-422/RS-485 networks
- Differential Schmitt trigger receiver input for noise immunity in electrically noisy industrial environments
Applications
The MAX3490AEGSA+ is designed for industrial automation networks, PLC communications, and building management systems where RS-485 multi-drop buses span distances up to 1200 meters at lower bit rates. It is well-suited for HVAC controllers, motor drive interfaces, and smart meter data concentrators that require reliable 3.3V-compatible half-duplex or full-duplex serial communications. The device's ±20kV ESD robustness also makes it appropriate for field-installed sensor networks exposed to electrostatic discharge hazards.
Specifications
| Manufacturer Package Code | 8-SOIC_N-150_MIL |
| Date Of Intro | 2016-09-19 |
| YTEOL | 9 |
| Differential Output | YES |
| Driver Number of Bits | 1 |
| High Level Input Current-Max | 0.000002A |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-422; TIA-422; EIA-485; TIA-485 |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Out Swing-Min | 1.5V |
| Output Low Current-Max | 0.002A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Receive Delay-Max | 35ns |
| Receiver Number of Bits | 1 |
| Supply Current-Max | 4mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 30ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum data rate of the MAX3490AEGSA+ on an RS-485 bus?
The MAX3490AEGSA+ supports a maximum data rate of 20 Mbps, making it suitable for high-speed RS-485 or RS-422 links in industrial automation, test equipment, and real-time control systems where fast serial throughput over distances up to several hundred meters is required.
How does the ±20kV ESD protection on the MAX3490AEGSA+ benefit installations near high-voltage equipment?
The ±20kV ESD protection on the bus pins far exceeds the ±2kV minimum required by the RS-485 standard, protecting the transceiver from electrostatic discharge events common near variable-frequency motor drives, relay panels, and outdoor field enclosures. This reduces the need for external TVS diode arrays and lowers system component count by 2 to 4 parts per node.
Can the MAX3490AEGSA+ be used in a 3.3V microcontroller system without a level shifter?
Yes. The MAX3490AEGSA+ is powered directly from a 3.3V supply and its logic I/O thresholds are compatible with 3.3V LVTTL and LVCMOS logic, so no external level shifter is required when connecting to popular 3.3V microcontrollers such as STM32, ESP32, or nRF52 series devices used in IoT gateway designs.
What package does the MAX3490AEGSA+ use and how does it affect PCB layout for EMI compliance?
The MAX3490AEGSA+ comes in an 8-pin SOIC (150-mil body) package, which provides sufficient pin spacing for decoupling capacitor placement close to the supply pins. The slew-rate-limited output variant helps reduce radiated emissions on RS-485 cables longer than 10 meters, assisting designers in meeting EN 55032 Class B EMI limits without additional external filtering components.
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About Maxim Integrated
Maxim Integrated is a leading electronic component manufacturer. FindMyChip sources Maxim Integrated ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.3356 | $3.34 |
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