DS75176BN Equivalent & Substitute Parts

Part Overview

The DS75176BN is a half-duplex RS422/RS485 transceiver interface IC manufactured by Texas Instruments in 8-DIP packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The DS75176BN operates within a 4.75V to 5.25V supply voltage range with a receiver hysteresis of 70 mV and supports half-duplex communication protocols. Identifying compatible substitutes ensures design continuity and component availability.

Substiute Parts

DS75176BN

Texas InstrumentsIn Stock: 17341DS75176BN Datasheet

Current PartRFQ

LT1785AIN8#PBF

Analog Devices Inc.In Stock: 3639LT1785AIN8#PBF Datasheet

MFR RecommendedRFQ

LT1785CN8#PBF

Analog Devices Inc.In Stock: 3458LT1785CN8#PBF Datasheet

MFR RecommendedRFQ

LT1785IN8#PBF

Analog Devices Inc.In Stock: 2307LT1785IN8#PBF Datasheet

MFR RecommendedRFQ

LTC485CN8#PBF

Analog Devices Inc.In Stock: 3256LTC485CN8#PBF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS75176BN is determined by strict alignment of electrical and mechanical parameters. The critical substitution criteria are:

Mandatory Matching Parameters:

• Protocol support: RS422 and RS485 half-duplex operation
• Duplex configuration: Half-duplex only
• Driver/Receiver count: 1/1 configuration
• Supply voltage range: 4.75V ~ 5.25V compatibility
• Package type: 8-DIP (0.300", 7.62mm) for through-hole mounting
• Receiver hysteresis: 70 mV (parametric equivalent) or 20 mV (functional equivalent with enhanced noise immunity)

Substitution Categories:

MFR Recommended Substitutes (Analog Devices LT1785 series) provide active product status with improved specifications including 20 mV receiver hysteresis, 250 kbps data rate capability, and RoHS3 compliance. Temperature variants accommodate different operating ranges.

Parametric Equivalent (LTC485CN8#PBF) maintains identical receiver hysteresis (70 mV) and operating temperature range (0°C ~ 70°C) as the original DS75176BN, providing direct functional replacement with RoHS3 compliance and active product status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Parametric Replacement: LTC485CN8#PBF is the parametric equivalent, maintaining the 70 mV receiver hysteresis and 0°C to 70°C operating temperature range identical to the DS75176BN. This part provides active product status and RoHS3 compliance while preserving the original electrical characteristics.

For Enhanced Performance with Temperature Flexibility: LT1785CN8#PBF matches the DS75176BN operating temperature range (0°C ~ 70°C) while offering improved receiver hysteresis (20 mV) and active product status. This substitute is suitable for designs requiring RoHS3 compliance without extended temperature requirements.

For Extended Temperature Range Applications: LT1785AIN8#PBF and LT1785IN8#PBF extend the operating temperature range to -40°C ~ 85°C, accommodating industrial and harsh environment applications. Both variants provide 20 mV receiver hysteresis and 250 kbps data rate capability with RoHS3 compliance. Selection between these variants depends on specific temperature requirements within the extended range.

Compliance Consideration: All substitute parts are RoHS3 compliant, addressing regulatory requirements that the obsolete DS75176BN does not meet. Active product status ensures long-term availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can LT1785 series parts directly replace the DS75176BN in existing designs? A: Yes, all LT1785 variants maintain the same 8-DIP package, through-hole mounting, RS422/RS485 half-duplex protocol support, and 4.75V to 5.25V supply voltage range. Pin-to-pin compatibility is preserved. The 20 mV receiver hysteresis in LT1785 parts provides enhanced noise immunity compared to the 70 mV specification of the DS75176BN.

Q: What is the difference between LT1785CN8#PBF and LT1785AIN8#PBF? A: Both parts are functionally identical with 20 mV receiver hysteresis and 250 kbps data rate. The primary difference is operating temperature range: LT1785CN8#PBF operates from 0°C to 70°C, while LT1785AIN8#PBF operates from -40°C to 85°C. Select based on your application's temperature requirements.

Q: Why is LTC485CN8#PBF listed as a parametric equivalent rather than a recommended substitute? A: LTC485CN8#PBF maintains the exact 70 mV receiver hysteresis and 0°C to 70°C operating temperature of the DS75176BN, making it a true parametric equivalent. However, the LT1785 series offers improved specifications (20 mV hysteresis, 250 kbps data rate) with active product status, making them preferred for new designs while LTC485CN8#PBF serves applications requiring identical electrical characteristics.

Q: Are all substitute parts RoHS compliant? A: Yes, all listed substitute parts (LT1785AIN8#PBF, LT1785CN8#PBF, LT1785IN8#PBF, and LTC485CN8#PBF) are RoHS3 compliant. The original DS75176BN is RoHS non-compliant, making substitution necessary for designs subject to RoHS regulations.

Q: What is the significance of the 8-DIP package specification? A: The 8-DIP (0.300", 7.62mm) package is a through-hole dual inline package with 0.3-inch row spacing. All substitute parts use identical packaging, ensuring direct PCB compatibility without layout modifications. This package type is suitable for through-hole soldering processes.

Q: Can I use these substitutes in new designs, or are they only for legacy system support? A: All substitute parts have active product status and are suitable for new designs. The LT1785 series is recommended for new applications due to improved specifications and long-term availability assurance. The DS75176BN's obsolete status makes substitution necessary for any ongoing or new development.