LTC2850IS8#PBF

产品概述

The LTC2850IS8#PBF is a low power 20Mbps RS485/RS422 Transceiver 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 fail-safe 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 latch up or damage.

• 3.3V Supply voltage
• 20Mbps Maximum data rate
• No damage or latch-up up to ±15kV HBM
• High input impedance supports 256 nodes (C, I-grade)
• Operation up to 125°C (H-grade)
• Guaranteed fail-safe receiver operation over the entire common mode range
• Current limited drivers and thermal shutdown
• Delayed micro power shutdown (5µA maximum, C, I-Grade)
• Power up/down glitch-free driver outputs
• Low operating current (370µA typical in receive mode)

• Compatible with TIA/EIA-485-A specifications

应用

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