LTC1685

PRODUCTION

52Mbps, Precision Delay, RS485 Fail-Safe Transceiver

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $4.26

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Part Details

Precision Propagation Delay Over Temperature:
- Receiver/Driver: 18.5ns ±3.5ns
High Data Rate: 52Mbps
Low t_PLH/t_PHL Skew:
- Receiver/Driver: 500ps Typ
–7V to 12V RS485 Input Common Mode Range
Guaranteed Fail-Safe Receiver Operation Over the Entire Common Mode Range
High Receiver Input Resistance: ≥22k, Even When Unpowered
Short-Circuit Protected
Thermal Shutdown Protected
Driver Maintains High Impedance in Three-State or with Power Off
Single 5V Supply
Pin Compatible with LTC485
45dB CMRR at 26MHz

Part Models: 4
1ku List Price: Starting From $4.26

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC1685CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC1685CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC1685IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC1685IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Nov 14, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)
		PCN22_0254_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1685CS8#PBF	PRODUCTION
LTC1685CS8#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LTC1685CS8#PBF	PRODUCTION
LTC1685CS8#TRPBF	PRODUCTION
LTC1685IS8#PBF	PRODUCTION
LTC1685IS8#TRPBF	PRODUCTION
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LTC1685IS8#PBF	PRODUCTION
LTC1685IS8#TRPBF	PRODUCTION
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1685IS8#PBF	PRODUCTION
LTC1685IS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

Standard RS-485 Half-Duplex Evaluation Board, EVAL-RS485HDEBZ

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Product Details

The EVAL-RS485HDEBZ allows quick and easy evaluation of half-duplex RS-485 transceivers with standard 8-lead SOIC footprints. The evaluation board allows interfacing via screw terminal block to digital I/O for driver input (DI), receiver output (RO), driver enable (DE) and receiver output (RO). Bus signals A and B (half-duplex bus) can be connected to a bus screw terminal block. One or two termination resistors can be connected to A and B via jumper settings, in order to evaluation the half-duplex RS-485 driver and receiver. Footprints are provided for pull-up and pull-down (biasing resistors) on the bus.

Devices for evaluation on the board must be ordered separately.

Resources

UG-543:Evaluation Boards for Full-Duplex and Half-Duplex RS-485 Transceivers (Rev.A)
783 kB

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LTC1685

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Design Note 1

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