LTC2858-1

LTC2856-1/LTC2856-2 LTC2857-1/LTC2857-2 LTC2858-1/LTC2858-2 20Mbps and Slew Rate Limited 15kV RS485/RS422 Transceivers FEATURES nn 20Mbps or Low EMI 250kbps Maximum Data Rate nn No Damage or Latchup to ESD: ±15kV HBM nn High Input Impedance Supports 256 Nodes (C, I-Grade) nn Operation Up to 125°C (H-Grade) nn Guaranteed Failsafe Receiver Operation Over the Entire Common Mode Range nn Current Limited Drivers and Thermal Shutdown nn Delayed Micropower Shutdown: 5µA Maximum (C, I-Grade) nn Power Up/Down Glitch-Free Driver Outputs nn Low Operating Current: 900µA Maximum in Receive Mode nn Compatible with TIA/EIA-485-A Specifications nn Available in 8-Lead and 10-Lead 3mm × 3mm DFN and 8-Lead and 10-Lead MSOP Packages APPLICATIONS nn Low Power RS485/RS422 Transceiver nn Level Translator nn Backplane Transceiver L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. DESCRIPTION The LTC®2856-1, LTC2856-2, LTC2857-1, LTC2857-2, LTC2858-1 and LTC2858-2 are low power, RS485/RS422 transceivers operating on 5V supplies at maximum data rates of 20Mbps or 250kbps for low EMI. The receiver has a one-eighth unit load, supporting up to 256 nodes per bus (C, I-Grade), and a failsafe feature that guarantees a high output state under conditions of floating or shorted inputs. The driver maintains a high output impedance over the entire common mode range when disabled or when the s...