SN75ALS161DWR Equivalent & Substitute Parts

Part Overview

The SN75ALS161DWR is an 8/8 half-duplex IEEE 488 transceiver IC manufactured by Texas Instruments in a 20-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device provides eight drivers and eight receivers for IEEE 488 protocol communication with a 650 mV receiver hysteresis specification.

Substiute Parts

SN75ALS161DWR

Texas InstrumentsIn Stock: 3184SN75ALS161DWR Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

SN75160BDWR

Texas InstrumentsIn Stock: 1644SN75160BDWR Datasheet

Parametric EquivalentRFQ

SN75ALS160DWR

Texas InstrumentsIn Stock: 2959SN75ALS160DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN75ALS161DWR are identified based on strict parametric equivalence in the following critical categories:

Parametric Equivalents (Full Compatibility): Parts that maintain identical electrical specifications and mechanical form factor are classified as parametric equivalents. These parts share the same protocol (IEEE 488), driver/receiver configuration (8/8), duplex mode (half), receiver hysteresis (650 mV), supply voltage range (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and package type (20-SOIC). Parametric equivalents differ only in product status or packaging format (Cut Tape vs. Tape & Reel).

Manufacturer Recommended Alternatives: The SN65C1167ENSR is listed as a manufacturer-recommended substitute despite differing protocol, driver/receiver count, and duplex mode. This classification indicates Texas Instruments' engineering assessment for functional replacement in specific application contexts, though electrical and mechanical parameters differ significantly.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The SN75160BDWR and SN75ALS160DWR are parametric equivalents of the SN75ALS161DWR. Both parts maintain identical electrical specifications and mechanical compatibility. The SN75160BDWR is available in Cut Tape & Digi-Reel packaging, while the SN75ALS160DWR is supplied in Tape & Reel format. Both parts carry Active product status, ensuring long-term availability and supply chain stability. Selection between these two should be based on packaging requirements and inventory logistics.

For Alternative Applications: The SN65C1167ENSR is designated as a manufacturer-recommended substitute by Texas Instruments. This part operates under different protocol specifications (RS422/RS485 instead of IEEE 488), features full-duplex operation instead of half-duplex, and provides 2/2 driver/receiver configuration instead of 8/8. The SN65C1167ENSR operates across an extended temperature range (-40°C ~ 85°C) and offers broader supply voltage tolerance (4.5V ~ 5.5V). This part is suitable only for applications where the functional differences align with system requirements.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, consistent with the original part specifications.

Frequently Asked Questions (FAQ)

Q: Can the SN75160BDWR directly replace the SN75ALS161DWR?

A: Yes. The SN75160BDWR is a parametric equivalent with identical electrical specifications, receiver hysteresis, supply voltage range, operating temperature range, and 20-SOIC package dimensions. The primary difference is product status (Active vs. Obsolete) and packaging format (Cut Tape & Digi-Reel vs. original packaging).

Q: What is the difference between SN75160BDWR and SN75ALS160DWR?

A: Both parts are parametric equivalents of the SN75ALS161DWR with identical electrical and mechanical specifications. The distinction lies in packaging format: SN75160BDWR is supplied in Cut Tape & Digi-Reel format, while SN75ALS160DWR is supplied in Tape & Reel format. Selection depends on assembly line requirements and inventory management practices.

Q: Is the SN65C1167ENSR compatible with the SN75ALS161DWR?

A: The SN65C1167ENSR is a manufacturer-recommended substitute but operates under fundamentally different specifications. It implements RS422/RS485 protocols instead of IEEE 488, provides 2/2 drivers/receivers instead of 8/8, operates in full-duplex mode instead of half-duplex, and uses a 16-SOIC package instead of 20-SOIC. Compatibility depends on whether the application can accommodate these functional and mechanical differences.

Q: Why is the SN75ALS161DWR classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Texas Instruments. Active parametric equivalents (SN75160BDWR and SN75ALS160DWR) are available to support existing designs and new production requirements.

Q: What are the package dimension differences between substitute parts?

A: The SN75160BDWR and SN75ALS160DWR maintain the same 20-SOIC package (0.295", 7.50mm Width) as the SN75ALS161DWR. The SN65C1167ENSR uses a smaller 16-SOIC package (0.209", 5.30mm Width), requiring PCB layout modifications if substituted.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SN75160BDWR, SN75ALS160DWR, and SN65C1167ENSR are all ROHS3 compliant with MSL Level 1 rating, matching the compliance profile of the SN75ALS161DWR.