LTC2859 Datasheet | Linear Technology

Features Integrated, Logic-Selectable 120Ω Termination Resistor - 20Mbps Max Data Rate - No Damage or Latchup to ESD: ±15k V HBM - High Input Impedance Supports 256 Nodes - 250kbps Low-EMI Mode - Guaranteed Failsafe Receiver Operation Over the .. Entire mon Mode Range - Current Limited Drivers and Thermal Shutdown - Delayed Micropower Shutdown (5μA Max) - Power Up/Down Glitch-Free Driver Outputs - Low Operating Current (900μA Max in Receive Mode) - Meets All TIA/EIA-485-A Specifications - Available in 10-Pin 3mm × 3mm DFN, 12-Pin 4mm × 3mm DFN and 16-Pin SSOP Packages - LTC2859/LTC2861 20Mbps RS485 Transceivers with Integrated Switchable Termination DESCRIPTION The LTC®2859 and LTC2861 are low power, 20Mbps RS485/422 transceivers operating on 5V supplies. The receiver includes a logic-selectable 120Ω termination, one-eighth unit load supporting up to 256 nodes per bus, and a failsafe feature that guarantees a high output state under conditions of floating or shorted inputs. The driver Features a logic-selectable low-EMI 250kbps operating mode, and maintains a high output impedance over the entire mon mode range when disabled or when the supply is removed. Excessive power dissipation caused by bus contention or a fault is prevented by current limiting all outputs and by a thermal shutdown. Enhanced ESD protection allows the LTC2859 and LTC2861 to withstand ±15k V (human body model) on the transceiver interface pins without latchup or damage. APPLICATIONS - - - Low Power RS485/RS422 Transceiver Level Translator Backplane Transceiver PRODUCT SELECTION GUIDE PART NUMBER LTC2859 LTC2861 DUPLEX Half Full PACKAGE DFN-10 SSOP-16, DFN-12 L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION LTC2859 RO RE TE DE DI SLO 2859/61 TA01 LTC2859 R RO RE TE DE Y D DI SLO LTC2859 120Ω 2V/DIV 20ns/DIV Z Y- Z LTC2859 at 20Mbps 120Ω...