MAX3485AEASA+ Maxim Integrated Undefined or Miscellaneous (Small Outline Packages) In Stock
Maxim MAX3485AEASA+ is a 3.3 V RS-485/RS-422 half-duplex line transceiver in an 8-pin SOIC package with differential Schmitt trigger receiver inputs and one driver plus one receiver channel. It supports data rates up to 10 Mbps over twisted-pair cables in industrial communication networks. Available globally from authorized distributors with fast worldwide shipping.
- Manufacturer
- Maxim Integrated
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MAX3485AEASA+ Datasheet PDF
- Category
- Undefined or Miscellaneous
- Price
- From $0.7601(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX3485AEASA+?
- 3.3 V single-supply operation enabling direct interface with low-voltage microcontrollers and FPGAs without level translation
- Differential Schmitt trigger receiver inputs reject common-mode noise up to ±7 V for robust communication in noisy industrial environments
- 10 Mbps maximum data rate over RS-485/RS-422 differential bus supporting high-speed serial communication across multi-node networks
- 8-pin SOIC package provides compact PCB integration suitable for space-constrained industrial control boards
- EIA-422 and EIA-485 dual-standard compliance allows use in both point-to-point and multi-drop bus topologies up to 32 unit loads
What is MAX3485AEASA+ used for?
The MAX3485AEASA+ is widely used in industrial automation networks, PLC communications, and SCADA systems requiring robust RS-485 serial links over long cable runs. Its 3.3 V operation and differential signaling make it ideal for interfacing microcontrollers in building automation, motor drive parameter programming, and field instrument communication over Modbus or DMX512 protocols. The device also suits RS-422 point-to-point links in medical devices, test equipment, and multi-drop sensor networks where noise immunity and cable length are critical.
What are the specifications of MAX3485AEASA+?
| 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 |
Where can I find the MAX3485AEASA+ datasheet?
MAX3485AEASA+ Datasheet DownloadOfficial datasheet from Maxim Integrated
What are equivalent replacements for MAX3485AEASA+?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum data rate and supply voltage for the MAX3485AEASA+?
The MAX3485AEASA+ operates from a 3.3 V supply and supports RS-485/RS-422 data rates up to 10 Mbps. This combination makes it suitable for high-speed Modbus RTU, DMX512, and proprietary serial protocols over twisted-pair cables. At lower data rates such as 9600 baud, the device can reliably drive cable runs exceeding 1200 meters while maintaining signal integrity.
How does the differential Schmitt trigger receiver in MAX3485AEASA+ benefit noise immunity in industrial installations?
The differential Schmitt trigger receiver has hysteresis and rejects common-mode voltages from -7 V to +12 V, which is the typical noise range on industrial RS-485 bus wiring. Ground potential differences between equipment in large factories can easily exceed 1 V, and differential reception cancels this common-mode interference. The Schmitt trigger hysteresis additionally prevents false triggering from slow-rising edges caused by long cable capacitance.
Can MAX3485AEASA+ drive multiple nodes on an RS-485 bus, and what is the maximum node count?
Yes, the MAX3485AEASA+ presents 1 unit load to the RS-485 bus, allowing up to 32 standard unit-load devices on a single bus segment without active repeaters. In a typical Modbus RTU network with a 120-ohm termination resistor at each end of the bus, this supports 32 slave nodes per segment. Using low-unit-load receivers (1/8 or 1/4 unit load) can extend the node count to 128 or 256 devices per segment.
When should a designer choose MAX3485AEASA+ over MAX485EESA+ for an RS-485 design?
The MAX3485AEASA+ is the 3.3 V variant designed for modern low-voltage microcontroller systems, whereas the MAX485EESA+ requires a 5 V supply. A designer should select MAX3485AEASA+ when the host controller runs at 3.3 V IO levels to avoid the need for level-shifting circuitry, reducing component count and board space. Both devices offer the same 10 Mbps data rate and 8-pin SOIC package, so substitution is straightforward with only a supply voltage change.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Maxim Integrated
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $4.7500 | $475.00 |
| 230+ | $0.8770 | $201.71 |
| 295+ | $0.8478 | $250.10 |
| 395+ | $0.7601 | $300.24 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
BZX84C2V4
Diodes Inc.
Undefined or Miscellaneous
MM74HCT245WM
ON Semiconductor
Undefined or Miscellaneous
BC2AAPC
MPD (Memory Protection Devices)
Undefined or Miscellaneous
MM74HCT138M
ON Semiconductor
Undefined or Miscellaneous
NC7S32P5X
ON Semiconductor
Undefined or Miscellaneous
3519
Keystone Electronics
Undefined or Miscellaneous
1287-ST
Keystone Electronics
Undefined or Miscellaneous
1211
Keystone Electronics
Undefined or Miscellaneous
HFBR-1524Z
Avago Technologies
Undefined or Miscellaneous
513002B02500G
Aavid Thermalloy
Undefined or Miscellaneous
593002B03400G
Aavid Thermalloy
Undefined or Miscellaneous
287-1ABE
Wakefield-Vette
Undefined or Miscellaneous
2717
Adafruit
Undefined or Miscellaneous
NC7SZ125P5
ON Semiconductor
Undefined or Miscellaneous
BZX84C20
Diodes Inc.
Undefined or Miscellaneous
TMH 2405S
Traco Power
Undefined or Miscellaneous
BZX84C22
Diodes Inc.
Undefined or Miscellaneous
BZX84C24
Diodes Inc.
Undefined or Miscellaneous
1376164-1
TE Connectivity
Undefined or Miscellaneous
1318164-1
TE Connectivity
Undefined or Miscellaneous
2998TR
Keystone Electronics
Undefined or Miscellaneous
2108610-5
TE Connectivity
Undefined or Miscellaneous
2821
Adafruit
Undefined or Miscellaneous
COM-09117
SparkFun
Undefined or Miscellaneous