Ultra Rugged ±60V RS485 Transceivers Run Full RS485 Levels at Up to 20Mbps with 3.3V or 5V Operation The LTC®2862–LTC2865 is a family of exceptionally rugged, high voltage tolerant RS485/RS422 transceivers that helps eliminate field failures without the need of costly external protection devices. ±60V overvoltage fault protection on the data transmission lines protects bus pins during operation and power shutdown, while an extended ±25V input common mode range and full failsafe operation improve data communications reliability in electrically noisy environments and in the presence of ground loop voltages. Enhanced ESD protection allows these devices to withstand ±15kV (HBM and IEC-1000-4-2 air discharge) on the transceiver pins without latchup or damage; all other pins are protected to ±8kV HBM. LTC2865 Receiving 10Mbps ±200mV Signal with 1MHz ±25V Common Mode Sweep Features Protected from Overvoltage Line Faults to ±60V n 3V to 5.5V Supply Voltage 20Mbps or Low EMI 250kbps Data Rate ±15kV ESD Interface Pins, ±8kV All Other Pins Extended Common Mode Range: ±25V Guaranteed Failsafe Receiver Operation Supports up to 256 Nodes Separate 1.65V to 5.5V Logic Supply Pin (LTC2865) Temperature Range: –55°C to 125°C n A, B 20V/DIV A n B n n RO n n RO 2V/DIV n n 100ns/DIV Part Number Max Data Rate Duplex SHDN Comments Package LTC2862-1/-2 20Mbps/250kbps Half Yes Pin-Compatible with LT 1785A ® SO-8, 3 x 3 DFN-8 LTC2863-1/-2 20Mbps/250kbps Full No Pin-Compatible with LTC490 SO-8, 3 x 3 DFN-8 LTC2864-1/-2 20Mbps/250kbps Full Yes Pin-Compatible with LT1791A SO-14, 3 x 3 DFN-10 LTC2865 20Mbps/250kbps Full Yes Logic Supply Pin, SLO Pin MSOP-12, 4 x 3 DFN-12 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Linear Technology RS485/RS422 Transceivers Part Number Supply Max Data ESD (V) Rate (Bits/s) # Dr # Rec Duplex SHDN (kV) Failsafe Comments Temp Grade Package 2500VRMS Isolation LTM®2881-3/-5 LTC1535 3.3/5 20M 1 1 Full Yes ±15 Type 2 C, I, H, MP Type 2 No External Components Required, Isolated 1W DC/DC Converter, Switchable, 120Ω Termination, UL File #E151738 UL File #E151738 5 250k 1 1 Full No ±8 Pin-Compatible with LT1785A C, I, H, MP C, I 15 × 11.25 × 2.8 LGA, 15 × 11.25 × 3.4 BGA SO(W)-28 ±60V Fault Protection LTC2862-1/-2 3 to 5.5 20M/250k 1 1 Half Yes ±15 Type 2 LTC2863-1/-2 3 to 5.5 20M/250k 1 1 Full No ±15 Type 2 LTC2864-1/-2 3 to 5.5 20M/250k 1 1 Full Yes ±15 Type 2 LTC2865 3 to 5.5 20M/250k 1 1 Full Yes ±15 Type 2 Logic Supply Pin, SLO Pin C, I, H LT1785A 5 250k 1 1 Half Yes ±15 Type 2 Pin-Compatible with LTC485 C, I, H SO-8, DIP-8 LT1791A 5 250k 1 1 Full Yes ±15 Type 2 Pin-Compatible with LTC491 C, I, H SO-14, DIP-14 3 × 3 DFN-10 Pin-Compatible with LT1791A SO-8, 3 × 3 DFN-8 C, I, H, MP SO-8, 3 × 3 DFN-8 C, I, H, MP SO-14, 3 × 3 DFN-10 MSOP-12, 4 × 3 DFN-12 Integrated Switchable 120Ω Termination LTC2854 3.3 20M 1 1 Half Yes ±25 Type 2 Low Power C, I, H LTC2859 5 20M/250k 1 1 Half Yes ±15 Type 2 Slew Rate Control, Low Power C, I, H 3 × 3 DFN-10 LTC2855 3.3 20M 1 1 Full Yes ±15 Type 2 Low Power C, I, H 4 × 3 DFN-12, SSOP-16 LTC2861 5 20M/250k 1 1 Full Yes ±15 Type 2 Slew Rate Control, Low Power C, I 4 × 3 DFN-12, SSOP-16 3.3V Supply Operation LTC2850 3.3 20M 1 1 Half Yes ±15 Type 2 Low Power C, I, H LTC2851 3.3 20M 1 1 Full No ±15 Type 2 Low Power C, I, H SO-8, MSOP-8, 3 × 3 DFN-8 LTC2852 3.3 20M 1 1 Full Yes ±15 Type 2 DE and RE Pins, Low Power C, I, H SO-14, MSOP-10, 3 × 3 DFN-10 LTC1480 3.3 2.5M 1 1 Half Yes ±3.5 Type 1 Low Power LTC2856-1/-2 5 20M/250k 1 1 Half Yes ±15 Type 2 Hot Swap™ Capable C, I, H LTC2857-1/-2 5 20M/250k 1 1 Full No ±15 Type 2 Hot Swap Capable C, I, H MSOP-8, 3 × 3 DFN-8 LTC2858-1/-2 5 20M/250k 1 1 Full Yes ±15 Type 2 Hot Swap Capable C, I, H MSOP-10, 3 × 3 DFN-10 LTC1690 5 5M 1 1 Full No ±15 Type 2 C, I LTC1481 5 2.5M 1 1 Half Yes ±10 Type 1 C, I SO-8, DIP-8 LTC1482 5 4M 1 1 Half Yes ±15 Type 2 Carrier Detect C, I MSOP-8, SO-8, DIP-8 Low EMI C, I SO-8, DIP-8 C, I MSOP-8, SO-8, DIP-8 C, I SO-8, MSOP-8, 3 × 3 DFN-8 SO-8, DIP- 8 Low Power LTC1483 5 150k 1 1 Half Yes ±10 Type 1 LTC1484 5 4M 1 1 Half Yes ±15 Type 2 LTC1485 5 10M 1 1 Half No ±10 Type 1 LTC1487 5 250k 1 1 Half Yes ±10 Type 1 Low EMI MSOP-8, 3 × 3 DFN-8 MSOP-8, SO-8, DIP-8 C, I SO-8, DIP-8 C SO-8, DIP-8 LTC485 5 2.5M 1 1 Half No ±4 Type 1 C, I, M LTC490 5 2.5M 1 1 Full No ±10 Type 1 C, I SO-8, DIP-8 LTC491 5 2.5M 1 1 Full No ±10 Type 1 C, I SO-14, DIP-14 DE and RE Pins SO-8, DIP-8, CERDIP-8 High Speed LTC1685 5 52M 1 1 Half No ±4 Type 2 C, I SO-8 LTC1686 5 52M 1 1 Full No ±4 Type 1 C, I SO-8 LTC1687 5 52M 1 1 Full No ±4 Type 1 DE and RE Pins C, I SO-14 Hot Swap Capable, 1/2 DE Pins C, I SO-16 Low Power, 1/2 DE Pins C, I SO(W)-16, DIP-16 Quad Drivers and Receivers LTC1688/89 5 100M 4 0 No ±4 LTC486/87 5 10M 4 0 No ±4 Type 1 LTC1518/19 5 52M 0 4 No ±4 Type 2 LTC488/89 5 10M 0 4 No ±10 Type 1 LTC1520 5 50M 0 4 No ±4 1/2 DE Pins High Speed, LVDS-Compatible C, I SO-16 C, I SO(W)-16, DIP-16 C SO-16 RS232/RS485 Multiprotocol LTC2870 3 to 5.5 20M/500k 1 1 Both Yes ±26 Type 2 Two RS232 Transceivers C, I 4 × 5 QFN-28, TSSOP-28 LTC2871 3 to 5.5 20M/500k 1 1 Both Yes ±16 Type 2 Two RS232 Transceivers C, I 5 × 7 QFN-38, TSSOP-38 LTC2872 3 to 5.5 20M/500k 2 2 Both Yes ±16 Type 2 Four RS232 Transceivers C, I 5 × 7 QFN-38 Type 1 = Open; Type 2 = Idle, Open, Short www.linear.com/2865 n 1-800-4-LINEAR 0313C