LTC2851 - 3.3V 20Mbps RS485/RS422 Transceiver _ BDTIC a Leading Distributor in China

LTC2851 - 3.3V 20Mbps RS485/RS422 Transceiver

The LTC2850, 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.

Features

3.3V Supply Voltage
20Mbps Maximum Data Rate
No Damage or Latchup Up to ±15kV HBM
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 8-Pin and 10-Pin 3mm × 3mm DFN, 8-Pin and 10-Pin MSOP, and 8-Pin and 14-Pin SO Packages

Typical Application

Applications

Low Power RS485/RS422 Transceiver
Level Translator
Backplane Transceiver

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC2851CDD#PBF	3x3 DFN-8	C	$2.21	$1.55
LTC2851CDD#TRPBF	3x3 DFN-8	C		$1.61
LTC2851CMS8#PBF	MS-8	C	$2.21	$1.55
LTC2851CMS8#TRPBF	MS-8	C		$1.61
LTC2851CS8#PBF	SO-8	C	$2.21	$1.55
LTC2851CS8#TRPBF	SO-8	C		$1.61
LTC2851HDD#PBF	3x3 DFN-8	H	$2.99	$2.04
LTC2851HDD#TRPBF	3x3 DFN-8	H		$2.10
LTC2851HMS8#PBF	MS-8	H	$2.99	$2.04
LTC2851HMS8#TRPBF	MS-8	H		$2.10
LTC2851HS8#PBF	SO-8	H	$2.99	$2.04
LTC2851HS8#TRPBF	SO-8	H		$2.10
LTC2851IDD#PBF	3x3 DFN-8	I	$2.64	$1.86
LTC2851IDD#TRPBF	3x3 DFN-8	I		$1.92
LTC2851IMS8#PBF	MS-8	I	$2.64	$1.86
LTC2851IMS8#TRPBF	MS-8	I		$1.92
LTC2851IS8#PBF	SO-8	I	$2.64	$1.86
LTC2851IS8#TRPBF	SO-8	I		$1.92
LTC2851MPDD	3x3 DFN-8	MP	$6.64	$4.65
LTC2851MPDD#PBF	3x3 DFN-8	MP	$6.64	$4.65
LTC2851MPDD#TRPBF	3x3 DFN-8	MP		$4.71
LTC2851MPMS8	MS-8	MP	$6.64	$4.65
LTC2851MPMS8#PBF	MS-8	MP	$6.64	$4.65
LTC2851MPMS8#TRPBF	MS-8	MP		$4.71
LTC2851MPS8	SO-8	MP	$6.64	$4.65
LTC2851MPS8#PBF	SO-8	MP	$6.64	$4.65
LTC2851MPS8#TRPBF	SO-8	MP		$4.71

Datasheet

LTC2850/LTC2851/LTC2852 - 3.3V 20Mbps RS485/RS422 Transceivers

Reliability Data

R521 - Reliability Data

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