±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers

The MAX3280E/MAX3281E/MAX3283E/MAX3284E are single receivers designed for RS-485 and RS-422 communication. These devices guarantee data rates up to 52Mbps, even with a 3V power supply. Excellent propagation delay (15ns max) and package-to-package skew time (8ns max) make these devices ideal for multidrop clock distribution applications.

The MAX3280E/MAX3281E/MAX3283E/MAX3284E have true fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are opened or shorted. The receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). These devices feature 1/4-unit-load receiver input impedance, allowing up to 128 receivers on the same bus.

The MAX3280E is a single receiver available in a 5-pin SOT23 package. The MAX3281E/MAX3283E single receivers have a receiver enable (EN or active-low EN) function and are offered in a 6-pin SOT23 package. The MAX3284E features a voltage logic pin that allows compatibility with low-voltage logic levels, as in digital FPGAs/ASICs. On the MAX3284E, the voltage threshold for a logic high is user-defined by setting VL in the range from 1.65V to VCC. The MAX3284E is also offered in a 6-pin SOT23 package.

Applications

* Automotive * Base Stations * Clock Distribution * Industrial Control * Local Area Networks * Telecom Racks

* ESD Protection:

* ±15kV-Human Body Model

* ±6kV-IEC 1000-4-2, Contact Discharge

* ±12kV-IEC 1000-4-2, Air-Gap Discharge

* Guaranteed 52Mbps Data Rate

* Guaranteed 15ns Receiver Propagation Delay

* Guaranteed 2ns Receiver Skew

* Guaranteed 8ns Package-to-Package Skew Time

* VL Pin for Connection to FPGAs/ASICs

* Allow Up to 128 Transceivers on the Bus (1/4-unit-load)

* Tiny SOT23 Package

* True Fail-Safe Receiver

* -7V to +12V Common-Mode Range

* 3V to 5.5V Power-Supply Range

* Enable (High and Low) Pins for Redundant Operation

* Three-State Output Stage (MAX3281E/MAX3283E)

* Thermal Protection Against Output Short Circuit

* AEC-Q100 (MAX3280EAUK/V+ Only)