MAX3280E/MAX3281E/ MAX3283E/MAX3284E 15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers General Description Features The MAX3280E/MAX3281E/MAX3283E/MAX3284E are ESD Protection: single receivers designed for RS-485 and RS-422 com- 15kV Human Body Model munication. These devices guarantee data rates up to 6kV IEC 1000-4-2, Contact Discharge 52Mbps, even with a 3V power supply. Excellent propa- 12kV IEC 1000-4-2, Air-Gap Discharge gation delay (15ns max) and package-to-package skew time (8ns max) make these devices ideal for mul- Guaranteed 52Mbps Data Rate tidrop clock distribution applications. Guaranteed 15ns Receiver Propagation Delay The MAX3280E/MAX3281E/MAX3283E/MAX3284E Guaranteed 2ns Receiver Skew have true fail-safe circuitry, which guarantees a logic- high receiver output when the receiver inputs are Guaranteed 8ns Package-to-Package Skew Time opened or shorted. The receiver output will be a logic V Pin for Connection to FPGAs/ASICs L high if all transmitters on a terminated bus are disabled (high impedance). These devices feature 1/4-unit-load Allow Up to 128 Transceivers on the Bus receiver input impedance, allowing up to 128 receivers (1/4-unit-load) on the same bus. Tiny SOT23 Package The MAX3280E is a single receiver available in a 5-pin True Fail-Safe Receiver SOT23 package. The MAX3281E/MAX3283E single receivers have a receiver enable (EN or EN) function -7V to +12V Common-Mode Range and are offered in a 6-pin SOT23 package. The 3V to 5.5V Power-Supply Range MAX3284E features a voltage logic pin that allows com- patibility with low-voltage logic levels, as in digital Enable (High and Low) Pins for Redundant FPGAs/ASICs. On the MAX3284E, the voltage threshold Operation for a logic high is user-defined by setting V in the L Three-State Output Stage (MAX3281E/MAX3283E) range from 1.65V to V . The MAX3284E is also CC offered in a 6-pin SOT23 package. Thermal Protection Against Output Short Circuit Applications Ordering Information Clock Distribution PIN- TOP PART TEMP RANGE PACKAGE MARK Telecom Racks MAX3280EAUK+T -40C to +125C 5 SOT23 +ADVM Base Stations MAX3280EAUK/V+T -40C to +125C 5 SOT23 +AFME Industrial Control MAX3281EAUT+T -40C to +125C 6 SOT23 +ABAT Local Area Networks MAX3283EAUT+T -40C to +125C 6 SOT23 +ABAU MAX3284EAUT+T -40C to +125C 6 SOT23 +ABAV Pin Configurations appear at end of data sheet. +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. /V denotes an automotive qualified part. Selector Guide PART V ENABLE DATA RATE PACKAGE L MAX3280E 52Mbps 5-Pin SOT23 MAX3281E Active High 52Mbps 6-Pin SOT23 MAX3283E Active Low 52Mbps 6-Pin SOT23 52Mbps (Note 1) MAX3284E 6-Pin SOT23 Note 1: MAX3284E data rate is dependent on V . L For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-2320 Rev 2 12/12MAX3280E/MAX3281E/ MAX3283E/MAX3284E 15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers ABSOLUTE MAXIMUM RATINGS (All Voltages Referenced to GND) Continuous Power Dissipation (T = +70C) A Supply Voltage (V ) ...............................................-0.3V to +6V 5-Pin SOT23 (derate 7.1mW/C above +70C)............571mW CC 6-Pin SOT23 (derate 8.7mW/C above +70C)............696mW Control Input Voltage (EN, EN).................................-0.3V to +6V Operating Temperature Range V Input Voltage .......................................................-0.3V to +6V L MAX328 EA ..............................................-40C to +125C Receiver Input Voltage (A, B)..............................-7.5V to +12.5V Storage Temperature Range .............................-65C to +150C Receiver Output Voltage (RO)....................-0.3V to (V + 0.3V) CC Junction Temperature......................................................+150C Receiver Output Voltage (RO) (MAX3284E) .....................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C L Receiver Output Short-Circuit Current .......................Continuous Soldering Temperature (reflow) .......................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 3V to 5.5V, V = V , T = T to T , unless otherwise noted. Typical values are at V = 5V and T = +25C.) (Notes 2, 3) CC L CC A MIN MAX CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 3.0 5.5 V CC Supply Current I No load 9 15 mA CC V Input Range V MAX3284E 1.65 V V L L CC V Supply Current I No load (MAX3284E) 10 A L L RECEIVER V = +12V 250 IN Input Current (A and B) I V = V or 5.5V A A, B CC GND V = -7V -200 IN Receiver Differential Threshold V -7V V +12V (Note 4) -200 -125 -50 mV TH CM Voltage Receiver Input Hysteresis V V + V = 0V 25 mV TH A B Receiver Enable Input Low V MAX3281E, MAX3283E only 0.4 V ENIL Receiver Enable Input High V MAX3281E, MAX3283E only 2 V ENIH Receiver Enable Input Leakage I MAX3281E, MAX3283E only 10 A LEAK MAX3280E/MAX3281E/MAX3283E, V - 0.4 CC I = -4mA, RO high OH Receiver Output High Voltage V V OH MAX3284E, I = -1mA, 1.65V V V , OH L CC V - 0.4 L RO high MAX3280E/MAX3281E/MAX3283E, 0.4 I = 4mA, RO low OL Receiver Output Low Voltage V V OL MAX3284E, I = 1mA, 1.65V V V , OL L CC 0.4 RO low Three-State Output Current at I 0 V V , RO = high impedance 5 A OZR O CC Receiver Receiver Input Resistance R -7V V +12V (Note 5) 48 k IN CM Receiver Output Short-Circuit I 0 V V 130 mA OSR RO CC Current ESD PROTECTION Human Body Model 15 ESD Protection (A, B) IEC1000-4-2 (Air-Gap Discharge) 12 kV IEC1000-4-2 (Contact Discharge) 6 2 Maxim Integrated