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MAX489CSD+T

Analog Devices

Analog Devices MAX489CSD+T RS422/RS485 transceiver, full duplex, 250kbps data rate, 1/1 driver/receiver, 14-SOIC surface mount, 4.75-5.25V supply, 0°C to 70°C.

Analog Devices MAX489CSD+T
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[IN STOCK] In Stock: 20 pcs
$3.96/ pc

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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

[ORIGINAL SEALED] [PRE-SHIP HD PHOTOS] [30D WARRANTY · COC] [TRACKED DAP/DDP]

Technical specifications

MAX489CSD+T specifications
Parameter / AttributeSpecification / Value
TypeTransceiver
MountingSurface Mount
Supply voltage4.75V ~ 5.25V
ProtocolRS422, RS485
Operating temperature0°C ~ 70°C
DuplexFull
PackageTape & Reel (TR); Cut Tape (CT)
Data rate250kbps
Case14-SOIC (0.154\", 3.90mm Width)
Receiver hysteresis70 mV
Number of drivers (Receivers)1/1
100% Footprint Match · Solder-Ready (No PCB Redesign Needed)

Need Stock or a Drop-in Second-Source for MAX489CSD+T?

Package: SOIC-8 (Narrow 150mil) · Pin-compatible replacements with immediate Shenzhen spot stock

Footprint Match 100%
Supply Chain & Allocation Reality:

The standard 8-pin RS-485 transceiver is the backbone of Modbus, BACnet, and solar inverter communications. Western brands (Maxim/TI) often face recurring spot premiums. MaxLinear SP485 and 3PEAK TP485E provide 100% pin-compatible, electrical-superior drop-in replacements with enhanced ESD protection.

Verified Pin-Compatible Replacements (2 verified alternatives)

TP485E-SR 3PEAK SOIC-8
100% Drop-in (Zero Code Change)
Availability & Target Pricing:

Enhanced ±15 kV ESD Protection & Stable Spot Delivery

Shenzhen Warehouse Spot Stock (24h Dispatch)

Electrical & Core Specs:

Up to 2.5 Mbps data rate, slew-rate limited for reduced EMI

4.75V – 5.25V (Standard 5V RS-485 bus)

Compatibility & Drop-In Notes: Zero software change required. DE (Driver Enable) and /RE (Receiver Enable) logic thresholds match legacy MAX485.
Package & Solder Footprint: 100% pin-to-pin compatible drop-in (Pin 1: RO, Pin 2: /RE, Pin 3: DE, Pin 4: DI, Pin 5: GND, Pin 6: A, Pin 7: B, Pin 8: VCC). Features ±15 kV IEC 61000-4-2 ESD protection (vastly superior to legacy MAX485 ±2 kV).
Shenzhen Warehouse Stock & MOQ: High reliability automotive and industrial grade parts with millions in monthly factory volume.
Request Volume Quote for TP485E-SR Compare MAX489CSD+T vs TP485E-SR Spec Matrix
SP485EEN-L/TR MaxLinear (Exar) SOIC-8
100% Drop-in (Zero Code Change)
Availability & Target Pricing:

Tier-1 Telecom Specified Second-Source with Proven Track Record

Immediate Reel Stock

Electrical & Core Specs:

Up to 10 Mbps data rate

5.0V ±5%

Compatibility & Drop-In Notes: Identical timing characteristics; drop-in replacement.
Package & Solder Footprint: Direct footprint and electrical substitute.
Shenzhen Warehouse Stock & MOQ: Standard second-source specified by top tier telecommunications equipment manufacturers.
Request Volume Quote for SP485EEN-L/TR Compare MAX489CSD+T vs SP485EEN-L/TR Spec Matrix
Buyer & Quality Checklist for Sourcing Alternatives
  • Check bus fail-safe biasing resistors (pull-up on A, pull-down on B): 3PEAK TP485 includes integrated true fail-safe receiver inputs.
  • Verify 120-ohm termination resistor placement at the physical cable ends of the RS-485 differential pair.
  • Check common-mode input voltage range (-7V to +12V) across remote ground potentials.
Frequently Asked Technical Questions

Q: Can TP485E-SR replace MAX485ESA+ without re-qualifying the PCB layout?

A: Yes. TP485E-SR is an exact 1:1 footprint, electrical, and pinout drop-in for MAX485ESA+ in SOIC-8. Solder pads, pin definitions, voltage levels, and bus drive characteristics match directly, while providing superior ±15kV ESD surge immunity.

Technical details

RS485 bus transceiver in 14-SOIC

The MAX489CSD+T: It handles differential data rates up to 250kbps over twisted-pair cabling, with a 70mV receiver hysteresis that rejects line noise on long bus runs.

Supply rail and temperature grade

Operates from a single 4.75V to 5.25V supply, matching standard 5V logic rails.

MAX489CSD+T
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