SN75161BN IEEE 488 Half Duplex Transceiver Equivalent & Substitute Parts

Part Overview

The SN75161BN is a half-duplex transceiver IC designed for IEEE 488 bus interface applications, featuring 8 drivers and 8 receivers in a 20-pin DIP package. Manufactured by Texas Instruments, this component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The IEEE 488 protocol specification and electrical characteristics define the substitution criteria for compatible alternatives.

Substiute Parts

SN75161BN

Texas InstrumentsIn Stock: 2687SN75161BN Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

SN75ALS160N

Texas InstrumentsIn Stock: 5750SN75ALS160N Datasheet

Parametric EquivalentRFQ

SN75ALS161N

Texas InstrumentsIn Stock: 1931SN75ALS161N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN75161BN are categorized based on strict electrical and mechanical compatibility criteria:

Parametric Equivalents maintain identical functional specifications across all critical parameters: IEEE 488 protocol compliance, 8/8 driver/receiver configuration, half-duplex operation, 650 mV receiver hysteresis, 4.75V–5.25V supply voltage range, 0°C–70°C operating temperature, and 20-DIP package format. These parts are direct functional replacements suitable for applications requiring no design modification.

Manufacturer Recommended Substitute represents a functional alternative with different electrical characteristics and package format. This substitute operates under different protocol specifications (RS422/RS485), features different driver/receiver configuration (2/2), operates in full-duplex mode, and uses surface-mount packaging. Selection of this substitute requires design-level evaluation of application requirements.

The substitution logic is determined by the following key parameters:

• Protocol specification (IEEE 488 vs. RS422/RS485)
• Driver/receiver count and configuration (8/8 vs. 2/2)
• Duplex mode (half vs. full)
• Receiver hysteresis value (650 mV vs. 60 mV)
• Supply voltage range compatibility
• Operating temperature range
• Package type and mounting method

Parameter Comparison

Engineering Selection Recommendations

For IEEE 488 Applications Requiring Direct Replacement:

SN75ALS161N and SN75ALS160N are parametric equivalents to the SN75161BN. Both parts maintain identical protocol compliance, driver/receiver configuration, duplex mode, receiver hysteresis, supply voltage range, operating temperature range, and 20-DIP package format. These parts are suitable for direct substitution in existing designs without circuit modification. Both are ROHS3 compliant and carry obsolete product status, consistent with the main part.

For Applications Permitting Design Modification:

SN65C1167ENSR is a manufacturer-recommended substitute with active product status, providing long-term availability assurance. This part operates under RS422/RS485 protocol specifications with 2/2 driver/receiver configuration and full-duplex operation. The extended operating temperature range (-40°C to 85°C) and wider supply voltage tolerance (4.5V–5.5V) provide enhanced environmental performance. Surface-mount packaging (16-SOIC) requires PCB redesign. ROHS3 compliance and MSL Level 1 rating confirm regulatory alignment. Selection of this substitute requires verification that the application architecture supports RS422/RS485 protocol operation and full-duplex communication mode.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are parametric equivalents with identical electrical specifications across all critical parameters: IEEE 488 protocol, 8/8 driver/receiver configuration, half-duplex operation, 650 mV receiver hysteresis, 4.75V–5.25V supply voltage, 0°C–70°C operating temperature, and 20-DIP package. No circuit modification is required.

Q: What is the primary difference between the parametric equivalents and SN65C1167ENSR?

A: The parametric equivalents (SN75ALS161N and SN75ALS160N) maintain IEEE 488 protocol compliance with 8/8 half-duplex configuration. SN65C1167ENSR operates under RS422/RS485 protocol with 2/2 full-duplex configuration. Protocol and duplex mode differences require application-level evaluation before substitution.

Q: Why is SN65C1167ENSR classified as a manufacturer-recommended substitute rather than a parametric equivalent?

A: SN65C1167ENSR differs in protocol specification (RS422/RS485 vs. IEEE 488), driver/receiver count (2/2 vs. 8/8), duplex mode (full vs. half), receiver hysteresis (60 mV vs. 650 mV), and package type (16-SOIC vs. 20-DIP). These differences require design-level assessment of system requirements and communication architecture.

Q: Are there package compatibility considerations when selecting substitutes?

A: Yes. SN75ALS161N and SN75ALS160N use identical 20-DIP through-hole packaging, enabling direct PCB replacement. SN65C1167ENSR uses 16-SOIC surface-mount packaging, requiring PCB redesign and assembly process modification.

Q: What is the product status significance for long-term availability?

A: SN75161BN, SN75ALS161N, and SN75ALS160N are classified as obsolete, indicating discontinued manufacturing. SN65C1167ENSR maintains active product status, ensuring continued availability and manufacturing support from Texas Instruments.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SN75161BN, SN75ALS161N, SN75ALS160N, and SN65C1167ENSR are all ROHS3 compliant. All parts are REACH unaffected and carry EAR99 ECCN classification.