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
Applications/Uses
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
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