SN75ALS161N Equivalent & Substitute Parts

Part Overview

The SN75ALS161N is an IEEE 488 half-duplex transceiver IC manufactured by Texas Instruments, configured with 8 drivers and 8 receivers in a 20-pin DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The part operates within a 4.75V to 5.25V supply voltage range and supports operating temperatures from 0°C to 70°C.

Substiute Parts

SN75ALS161N

Texas InstrumentsIn Stock: 1931SN75ALS161N Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

SN75161BN

Texas InstrumentsIn Stock: 2687SN75161BN Datasheet

Parametric EquivalentRFQ

SN75ALS160N

Texas InstrumentsIn Stock: 5750SN75ALS160N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN75ALS161N are classified based on strict parametric alignment with the following critical criteria:

Parametric Equivalents maintain identical electrical and mechanical specifications:

• Protocol: IEEE 488
• Driver/Receiver Configuration: 8/8
• Duplex Mode: Half
• Receiver Hysteresis: 650 mV
• Supply Voltage: 4.75V ~ 5.25V
• Operating Temperature: 0°C ~ 70°C
• Package: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Manufacturer Recommended Substitute offers functional compatibility through different protocol support and package configuration but maintains Texas Instruments manufacturing and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

SN75161BN and SN75ALS160N are parametric equivalents to the SN75ALS161N. Both parts maintain identical electrical specifications, protocol support (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 through-hole 20-DIP package format. All three parts are obsolete but ROHS3 compliant. Selection between these equivalents depends on inventory availability and application-specific requirements.

For Alternative Protocol Applications:

The SN65C1167ENSR is a manufacturer-recommended substitute that operates under different protocol standards (RS422/RS485) with full-duplex capability and reduced receiver hysteresis (60 mV). This part features an extended operating temperature range (-40°C ~ 85°C), wider supply voltage tolerance (4.5V ~ 5.5V), and surface-mount packaging (16-SOIC). The SN65C1167ENSR is currently active in production and ROHS3 compliant. This substitute is applicable only when system architecture supports RS422/RS485 protocols and surface-mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SN75161BN and SN75ALS160N be used interchangeably with SN75ALS161N?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, protocol support, driver/receiver configuration, duplex mode, receiver hysteresis, supply voltage range, operating temperature range, and 20-DIP through-hole package format. Direct substitution is supported without circuit modification.

Q: What are the key differences between the parametric equivalents?

A: SN75161BN, SN75ALS160N, and SN75ALS161N share identical electrical and mechanical parameters. Differences exist only in base product numbering and manufacturing lot availability. All three are obsolete Texas Instruments components with ROHS3 compliance.

Q: Is the SN65C1167ENSR a direct replacement?

A: No. The SN65C1167ENSR operates under different protocol standards (RS422/RS485 instead of IEEE 488), features full-duplex instead of half-duplex operation, includes different receiver hysteresis (60 mV vs. 650 mV), and uses surface-mount packaging (16-SOIC) instead of through-hole (20-DIP). This substitute requires circuit redesign and is applicable only when system requirements support RS422/RS485 protocols.

Q: What is the impact of package differences?

A: Parametric equivalents (SN75161BN and SN75ALS160N) maintain the 20-DIP through-hole package, enabling direct PCB compatibility. The SN65C1167ENSR uses 16-SOIC surface-mount packaging, requiring different PCB layout, assembly process, and mounting techniques.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SN75ALS161N, SN75161BN, SN75ALS160N, and SN65C1167ENSR are all ROHS3 compliant and REACH unaffected.

Q: What is the product status significance?

A: SN75ALS161N, SN75161BN, and SN75ALS160N are classified as obsolete, indicating discontinued production. The SN65C1167ENSR maintains active production status, providing long-term availability for new designs requiring RS422/RS485 protocol support.