LTC2854CDD#PBF - 

制造商：

LINEAR TECHNOLOGY LINEAR TECHNOLOGY

制造商产品编号：

LTC2854CDD#PBF

仓库库存编号：

1609796

技术数据表：

(EN)

The LTC2854CDD#PBF is a low power half-duplex 20Mbps RS485/RS422 Transceiver with integrated switchable termination operating on 3.3V supplies. The receiver includes a logic-selectable 120R termination, 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 a thermal shutdown. Enhanced ESD protection allows the LTC2854 to withstand ±25kV (human body model) and the LTC2855 to withstand ±15kV on the transceiver interface pins without latch up or damage.

• Integrated, logic-selectable 120R termination resistor
• 3.3V Supply voltage
• 20Mbps Maximum data rate
• No damage or latch-up up to ±25kV 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