20Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters

±15kV ESD-Protected, 20Mbps +3.3V, SOT23 RS-485/RS-422 Transmitters

Please check latest availability status for a specific part variant.


The MAX3293/MAX3294/MAX3295 low-power, high-speed transmitters for RS-485/RS-422 communication operate from a single +3.3V power supply. These devices contain one differential transmitter. The MAX3295 transmitter operates at data rates up to 20Mbps, with an output skew of less than 5ns, and a guaranteed driver propagation delay below 25ns. The MAX3293 (250kbps) and MAX3294 (2.5Mbps) are slew-rate limited to minimize EMI and reduce reflections caused by improperly terminated cables.

The MAX3293/MAX3294/MAX3295 output level is guaranteed at +1.5V with a standard 54Ω load, compliant with RS-485 specifications. The transmitter draws 5mA of supply current when unloaded, and 1µA in low-power shutdown mode (DE = GND).

Hot-swap circuitry eliminates false transitions on the data cable during circuit initialization or connection to a live backplane, and short-circuit current limiting and thermalshutdown circuitry protect the driver against excessive power dissipation.

The MAX3293/MAX3294/MAX3295 are offered in a 6-pin SOT23 package, and are specified over the automotive temperature range.
MAX3293, MAX3294, MAX3295: Typical Operating Circuit MAX3293, MAX3294, MAX3295: Typical Operating Circuit Enlarge+

Key Features

  • Space-Saving 6-Pin SOT23 Package
  • 250kbps/2.5Mbps/20Mbps Data Rates Available
  • Operate from a Single +3.3V Supply
  • ESD Protection
    • ±9kV—Human Body Model
  • Slew-Rate Limited for Errorless Data Transmission (MAX3293/MAX3294)
  • 1µA Low-Current Shutdown Mode
  • -7V to +12V Common-Mode Input Voltage Range
  • Current Limiting and Thermal Shutdown for Driver-Overload Protection
  • Hot-Swap Inputs for Telecom Applications
  • Automotive Temperature Range (-40°C to +125°C)
  • AEC-Q100 Qualified MAX3295AUT/V+T


  • Automotive
  • Clock Distribution
  • Industrial Control
  • Point-of-Sale Equipment
  • RS-422/RS-485 Communications
  • Security Equipment
  • Telecom Equipment
Part NumberTx/RxVSUPPLY
Data Rate
ESD Protect.
Tx ENRx ENICC (Shutdn.)
Slew Rate LimitingOper. Temp.
typmintypSee Notes
MAX3293 1Tx3.312509YesNo1No-40 to +125
$1.12 @1k
MAX3294 2500
$1.14 @1k
MAX3295 20000
$1.23 @1k
See All RS-485/RS-422 Line Driver/Receivers (205)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Product Reliability Reports: MAX3295.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX3295AUT
  • MAX3295AUT+
  • MAX3295AUT+T
  • MAX3295AUT-T
  • MAX3295AUT/V+
  • MAX3295AUT/V+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >


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