LTC2852IDD#TRPBF UART Interface IC RS-232 Interface IC 1x 5V RS232/RS485 Multiprotocol Tran
uart multiplexer ic
,uart level shifter ic
LTC2852IDD#TRPBF UART Interface IC RS-232 Interface IC 1x 5V RS232/RS485 Multiprotocol Tran
FEATURES
n 3.3V Supply Voltage
n 20Mbps Maximum Data Rate
n No Damage or Latchup Up to ±15kV HBM n High Input Impedance Supports 256 Nodes (C-, I-Grade)
n Operation Up to 125°C (H-Grade)
n Guaranteed Failsafe Receiver Operation Over the Entire Common Mode Range
n Current Limited Drivers and Thermal Shutdown n Delayed Micropower Shutdown: 5μA Maximum (C-, I-Grade)
n Power Up/Down Glitch-Free Driver Outputs n Low Operating Current: 370μA Typical in Receive Mode
n Compatible with TIA/EIA-485-A Specifications
n Available in 8-Pin and 10-Pin 3mm × 3mm DFN, 8-Pin and 10-Pin MSOP, and 8-Pin and 14-Pin SO Packages
DESCRIPTION
The LTC®2850, LTC2851 and LTC2852 are low power, 20Mbps RS485/RS422 transceivers operating on 3.3V supplies. 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 supply is removed. Excessive power dissipation caused by bus contention or a fault is prevented by current limiting all outputs and by thermal shutdown.
Enhanced ESD protection allows these parts to withstand up to ±15kV (human body model) on the transceiver interface pins without latchup or damage.
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