MAX3293 Datasheet

• Space-Saving 6-Pin SOT23 Package
• 250kbps Data Rates Available
• Operate from a Single +3.3V Supply
• ESD Protection
  • ±9kV—Human Body Model
• Slew-Rate Limited for Errorless Data Transmission (MAX3293)
• 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)

• Automotive
• Clock Distribution
• Industrial Control
• Point-of-Sale Equipment
• RS-422/RS-485 Communications
• Security Equipment
• Telecom Equipment

The MAX3293 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 MAX3293 (250kbps)  are slew-rate limited to minimize EMI and reduce reflections caused by improperly terminated cables.

The MAX3293 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 are offered in a 6-pin SOT23 package, and are specified over the automotive temperature range.