MAX3293:20Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters

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

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.

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)
MAX3293, MAX3294, MAX3295: Typical Operating Circuit
MAX3293, MAX3294, MAX3295: Typical Operating Circuit
Applications/Uses
  • Automotive
  • Clock Distribution
  • Industrial Control
  • Point-of-Sale Equipment
  • RS-422/RS-485 Communications
  • Security Equipment
  • Telecom Equipment
DataSheet
titleDownload file
MAX3293-MAX3295 Data SheetMAX3293-MAX3295.pdf
Parametrics
Part NumberTx/RxVSUPPLY
(V)
ICC
(mA)
Data Rate
(kbps)
ESD Protect.
(±kV)
Tx ENRx ENICC (Shutdn.)
(µA)
Slew Rate LimitingOper. Temp.
(°C)
Package/PinsBudgetary
Price
typmintypSee Notes
MAX32931Tx3.312509YesNo1No-40 to +125SOT/6$1.12 @1k
MAX32942500SOT/6
MAX329520000SOT/6
Quality and Environmental Data
Related Products
  • MAX3281E:±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers
  • MAX3283E:±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers
  • MAX3284E:±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers
  • MAX3280E:±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX3293AUTActiveSOT,;6 pin;9 mm²-40°C to +125°CNo
MAX3293AUT+ActiveSOT,;6 pin;9 mm²-40°C to +125°CLead Free
MAX3293AUT+TActiveSOT,;6 pin;9 mm²-40°C to +125°CLead Free
MAX3293AUT-TActiveSOT,;6 pin;9 mm²-40°C to +125°CNo
MAX3293-MAX3295.pdf MAX3295
MAX3293.pdf MAX3293
MAX3293-MAX3295.pdf MAX3295