High Input Impedance Supports 256 Nodes (C-, I-Grade)
Operation Up to 125°C (H-Grade)
Guaranteed Failsafe Receiver Operation Over the Entire Common Mode
Range
Current Limited Drivers and Thermal Shutdown
Delayed Micropower 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
Available in 10-Pin 3mm × 3mm DFN, 12-Pin 4mm × 3mm DFN and 16-Pin
SSOP Packages
APPLICATIONS
Low Power RS485/RS422 Transceiver
Level Translator
Backplane Transceiver
DESCRIPTION
The LTC®2854 and LTC2855 are low power, 20Mbps RS485/RS422
transceivers operating on 3.3V supplies. The receiverincludes a
logic-selectable 120Ω termination, 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 offloating or
shorted inputs.
The driver maintains a high output impedance over the entire common
mode range when disabled or when the supply is removed.
Excessivepowerdissipationcausedby bus contention or a fault is
prevented by current limiting all outputs and by a thermal
shutdown.
EnhancedESDprotectionallows theLTC2854towithstand ±25kV
(humanbodymodel) and theLTC2855towithstand ±15kV on the transceiver
interface pins without latchup or damage.
Founded in 2004, Walton Electronics CO.,LTD is a scaled and
professional independent distributor of electronic components in
Shenzhen , China. Committed to the world's leading brands of
electronic components distribution integration services, mainly
engaged in active components , integrated circuit chips.
We provide products and services in all areas of the electronics
industry, including: automotive, medical, consumer electronics,
industrial control, Internet of Things, new energy,communications,
military and so on.
