SN75LBC173ADR RS422/RS485 Receiver IC Equivalent & Substitute Parts

Part Overview

The SN75LBC173ADR is a 0/4 Receiver RS422/RS485 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production status. The SN75LBC173ADR operates within a supply voltage range of 4.75V to 5.25V and supports data rates up to 50Mbps with a receiver hysteresis of 40mV. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for design continuity and long-term component availability.

Substiute Parts

SN75LBC173ADR

Texas InstrumentsIn Stock: 1689SN75LBC173ADR Datasheet

Current PartRFQ

SN65LBC173ADR

Texas InstrumentsIn Stock: 2646SN65LBC173ADR Datasheet

MFR RecommendedRFQ

MAX3095CSE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2131MAX3095CSE+ Datasheet

MFR RecommendedRFQ

MAX3095CSE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 15144MAX3095CSE+T Datasheet

MFR RecommendedRFQ

MAX3095ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 100124MAX3095ESE+ Datasheet

MFR RecommendedRFQ

MAX3095ESE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3872MAX3095ESE+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN75LBC173ADR is determined by the following critical parameters:

Primary Compatibility Criteria:

• Protocol: RS422/RS485
• Number of Drivers/Receivers: 0/4 configuration
• Package / Case: 16-SOIC form factor
• Voltage - Supply: 4.75V ~ 5.25V range
• Mounting Type: Surface Mount

Secondary Consideration:

• Data Rate: Minimum 50Mbps capability
• Receiver Hysteresis: 40mV or greater

Substitute parts must maintain identical protocol support, receiver count, and package specifications. Operating temperature range and product status variations are acceptable provided the substitute meets or exceeds the electrical performance requirements of the original part.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN65LBC173ADR

The SN65LBC173ADR is the direct Texas Instruments equivalent with Active product status. It maintains identical electrical specifications including 50Mbps data rate and 40mV receiver hysteresis. The extended operating temperature range (-40°C to 85°C) provides broader environmental coverage compared to the SN75LBC173ADR. This part is recommended as the first choice for direct replacement in new designs and production continuity.

Secondary Substitutes: MAX3095 Series (Analog Devices Inc./Maxim Integrated)

The MAX3095CSE+, MAX3095CSE+T, MAX3095ESE+, and MAX3095ESE+T are functionally compatible alternatives from Analog Devices Inc./Maxim Integrated. All variants maintain the 0/4 receiver configuration, RS422/RS485 protocol support, and 16-SOIC package specification. These parts feature 45mV receiver hysteresis and support 10Mbps data rates. The MAX3095ESE+ and MAX3095ESE+T variants offer extended operating temperature range (-40°C to 85°C), providing enhanced thermal performance. All MAX3095 variants carry Active product status with ROHS3 compliance.

Packaging Considerations:

• SN65LBC173ADR: Available in Cut Tape (CT) & Digi-Reel® packaging
• MAX3095CSE+: Available in Tube packaging
• MAX3095CSE+T: Available in Cut Tape (CT) & Digi-Reel® packaging
• MAX3095ESE+: Available in Tube packaging
• MAX3095ESE+T: Available in Cut Tape (CT) & Digi-Reel® packaging

Frequently Asked Questions (FAQ)

Q: Can the MAX3095 series directly replace the SN75LBC173ADR?

A: The MAX3095 series maintains functional compatibility through identical protocol support (RS422/RS485), receiver configuration (0/4), and package form factor (16-SOIC). However, the MAX3095 series operates at 10Mbps maximum data rate compared to the SN75LBC173ADR's 50Mbps capability. Selection depends on system bandwidth requirements. If the application requires 50Mbps operation, the SN65LBC173ADR is the appropriate substitute.

Q: What is the difference between MAX3095CSE+ and MAX3095CSE+T?

A: Both parts are identical in electrical specifications and package type (16-SOIC). The primary difference is packaging format: MAX3095CSE+ is supplied in Tube packaging, while MAX3095CSE+T is supplied in Cut Tape (CT) & Digi-Reel® format. Selection is based on assembly process requirements and inventory management preferences.

Q: Why does the SN65LBC173ADR have a wider operating temperature range?

A: The SN65LBC173ADR (-40°C to 85°C) extends the lower and upper temperature limits compared to the SN75LBC173ADR (0°C to 70°C). This expanded range provides design flexibility for applications requiring enhanced thermal performance or operation in extreme environments. Both parts maintain identical electrical performance within their respective operating ranges.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The SN65LBC173ADR and all MAX3095 variants (MAX3095CSE+, MAX3095CSE+T, MAX3095ESE+, MAX3095ESE+T) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the original SN75LBC173ADR.

Q: Which substitute offers the best long-term availability?

A: The SN65LBC173ADR carries Active product status from Texas Instruments, indicating ongoing production and supply continuity. The MAX3095 series from Analog Devices Inc./Maxim Integrated also maintains Active status. Both options provide superior long-term availability compared to the Last Time Buy status of the SN75LBC173ADR.