3.3V, High-Speed, RS-485/RS-422 MAX3362 Transceiver in SOT Package General Description Benefits and Features The MAX3362 low-power, high-speed transceiver for Ideal for Multidrop RS-485/RS-422 Clock/ RS-485/RS-422 communication operates from a single Data Distribution +3.3V power supply. The device contains one differen- Guaranteed 20Mbps Data Rate tial transceiver consisting of a line driver and receiver. 6ns (max) Transmitter and Receiver Skew The transceiver operates at data rates up to 20Mbps, with an output skew of less than 6ns. Driver and receiv- -7V to +12V Common-Mode Range er propagation delays are guaranteed below 50ns. This Hot-Swap Feature fast switching and low skew make the MAX3362 ideal Allows Up to 256 Transceivers on the Bus for multidrop clock/data distribution applications. Half-Duplex Operation The output level is guaranteed at +1.5V with a standard 54 load, compliant with RS-485 specifications. The Interoperable with +5V Logic transceiver draws 1.7mA supply current when Low Power Consumption Minimizes unloaded or fully loaded with the drivers disabled. Thermal Dissipation Additionally, the MAX3362 has a low-power shutdown Operates from a Single +3.3V Supply mode, reducing the supply current to 1A. 1.7mA Operating Supply Current The MAX3362 has a 1/8-unit-load receiver input imped- ance, allowing up to 256 transceivers on the bus. The 1A Low-Power Shutdown Mode MAX3362 is designed for half-duplex communication. Space-Saving 8-Pin SOT Package The device has a hot-swap feature that eliminates false Protection Features and Wide Temperature Range transitions on the data cable during circuit initialization. Increase System Reliability in Harsh Environments The drivers are short-circuit current limited, and a ther- mal shutdown circuit protects against excessive power Current Limiting and Thermal Shutdown dissipation. Automotive Temperature Range Variants The MAX3362 is available in an 8-pin SOT package and specified over industrial and automotive tempera- Ordering Information ture ranges. T EMP PIN- T O P PKG Applications PART R A NGE PACK A G E M A RK C O DE Clock/Data Distribution M AX3362EKA- T -40 C to +8 5C 8 SOT23-8 AAJL S8- 1 Telecom Equipment M AX3362AKA-T -40 C to +1 25C 8 SOT23-8 AALL S8- 1 Security Equipment M AX3362EKA T -40 C to +8 5C 8 SOT23-8 AEPH S 8- 1 Point-of-Sale Equipment M AX3362AKA T -40 C to +1 25C 8 SOT23-8 AEPP S 8-1 Industrial Controls Pin Configuration and Functional Diagram appear at end Indicates an RoHS-compliant part. of data sheet. Typical Operating Circuit 120 120 B B DI DE D D DE DI ABAA B A R RO R RO RE RE R R MAX3362 D D DI DE RO RE DI DE RO RE 19-2218 Rev 4 2/15 3.3V, High-Speed, RS-485/RS-422 MAX3362 Transceiver in SOT Package Absolute Maximum Ratings All voltages with respect to GND. Continuous Power Dissipation (T = +70C) A V , RE, DE, DI ......................................................-0.3V to +6V 8-Pin SOT (derate 9.7mW/C above +70C) ............... 777mW CC Receiver Input Voltages, Driver Output Operating Temperature Range Voltages (A, B) .......................................................-8V to +13V MAX3362E .................................................. -40C to +85C Receiver Input Current, Driver Output MAX3362A ................................................ -40C to +125C Current (A, B).................................................................250mA Storage Temperature Range .............................-65C to +150C V - V ..................................................................................+8V Junction Temperature......................................................+150C A B Receiver Output Voltage (RO)....................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C CC 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. DC Electrical Characteristics (V = +3.3V 5%, T = T to T , unless otherwise noted. Typical values are at V = +3.3V and T = +25C.) (Notes 1, 2) CC A MIN MAX CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DRIVER Figure 1, R = 100 (RS-422) L 2.0 (extended temperature range) Figure 1, R = 100 L Differential Driver Output V 1.5 V OD (automotive temperature range) Figure 1, R = 54 (RS-485) L 1.5 (extended temperature range) Change in Magnitude of Figure 1, R = 54 or 100 L V 0.2 V OD Differential Output Voltage (Note 3) Driver Common-Mode Output V Figure 1, R = 54 or 100 3V OC L Voltage Change In Magnitude of Figure 1, R = 54 or 100 L V 0.2 V OC Common-Mode Voltage (Note 3) Input High Voltage V DE, DI, RE 2.0 V IH Input Low Voltage V DE, DI, RE 0.8 V IL Input Hysteresis V DE, DI, RE 50 mV HYS Input Current (DE, DI, RE)I 0 < V < 5V 1A IN IN 0 < V < 12V (Note 4) +250 Driver Short-Circuit Output OUT I mA OSD Current -7V < V < V (Note 4) -250 OUT CC (V - 1V) < V < 12V (Note 4) +25 Driver Short-Circuit Foldback CC OUT I mA OSDF Output Current -7V < V < 1V (Note 4) -25 OUT www.maximintegrated.com Maxim Integrated 2