LTC2851MPMS8 Equivalent & Substitute Parts

Part Overview

The LTC2851MPMS8 is an active RS422/RS485 transceiver manufactured by Analog Devices Inc., designed for full-duplex serial communication applications. This integrated circuit contains one driver and one receiver pair, operating across a 3V to 3.6V supply voltage range with a maximum data rate of 20 Mbps. The device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when identical electrical specifications, mechanical compatibility, and compliance certifications are maintained across different packaging or distribution formats.

Substiute Parts

LTC2851MPMS8

Analog Devices Inc.In Stock: 1024LTC2851MPMS8 Datasheet

Current PartRFQ

LTC2851MPMS8#PBF

Analog Devices Inc.In Stock: 934LTC2851MPMS8#PBF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTC2851MPMS8 are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following key parameters that must remain identical:

• Protocol Compatibility: RS422 and RS485 full-duplex operation
• Driver/Receiver Configuration: 1 driver and 1 receiver pair
• Electrical Specifications: 20 Mbps data rate, 25 mV receiver hysteresis, 3V to 3.6V supply voltage
• Temperature Range: -55°C to 125°C operating window
• Package Compatibility: 8-MSOP surface mount package with 0.118" (3.00mm) width
• Compliance Standards: RoHS3 compliance and REACH unaffected status
• Moisture Sensitivity: MSL 1 rating

Variations in packaging format (such as tube versus reel distribution) or supplier device package designations do not affect functional equivalence when all electrical and mechanical parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

Both the LTC2851MPMS8 and LTC2851MPMS8#PBF are Active product status devices manufactured by Analog Devices Inc. and maintain identical electrical and mechanical specifications. Selection between these parts is determined by packaging and distribution requirements rather than functional performance.

The LTC2851MPMS8#PBF designation indicates tube packaging format, which may be preferred for lower-volume applications or manual assembly processes. The base LTC2851MPMS8 designation accommodates standard reel packaging typical of high-volume automated assembly operations.

Both variants satisfy RoHS3 compliance requirements and REACH regulatory status. The MSL 1 rating indicates unlimited shelf life under standard storage conditions, eliminating moisture-related constraints during component procurement and inventory management.

Selection of either part number is functionally equivalent for RS422/RS485 transceiver applications operating within the specified 3V to 3.6V supply range and -55°C to 125°C temperature envelope.

Frequently Asked Questions (FAQ)

Q: Are LTC2851MPMS8 and LTC2851MPMS8#PBF functionally identical?

A: Yes. Both part numbers contain identical silicon and meet all electrical specifications including 20 Mbps data rate, 25 mV receiver hysteresis, and full-duplex RS422/RS485 operation. The difference is packaging format only.

Q: Can LTC2851MPMS8#PBF be used as a direct replacement for LTC2851MPMS8?

A: Yes, provided the receiving equipment accommodates tube packaging format. The 8-MSOP package dimensions and pinout are identical, ensuring mechanical and electrical compatibility.

Q: What does the #PBF suffix indicate?

A: The #PBF suffix designates lead-free, RoHS3 compliant packaging. Both part numbers carry this compliance status.

Q: Are there any temperature or voltage derating considerations between these parts?

A: No. Both parts operate identically across the -55°C to 125°C temperature range and 3V to 3.6V supply voltage specification.

Q: Which part number should be selected for high-volume production?

A: Selection depends on assembly process requirements. Standard reel packaging (LTC2851MPMS8) is typical for automated pick-and-place assembly. Tube packaging (LTC2851MPMS8#PBF) is suitable for manual assembly or lower-volume applications.

Q: Do these parts require different PCB layout or design considerations?

A: No. Both parts use the 8-MSOP package with identical pinout and footprint requirements.

Q: What is the significance of MSL 1 rating for these parts?

A: MSL 1 indicates unlimited shelf life under standard storage conditions (23°C, 50% relative humidity). No special moisture control or baking procedures are required prior to assembly.