SN75C1167DB Equivalent & Substitute Parts

Part Overview

The SN75C1167DB is a half-duplex RS422/RS485 transceiver IC manufactured by Texas Instruments, housed in a 16-SSOP surface mount package. This device functions as a 2/2 transceiver (2 drivers, 2 receivers) for industrial communication protocols. The SN75C1167DB carries a Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts is essential for ongoing design support, production continuity, and long-term component availability in applications requiring RS422/RS485 interface functionality.

Substiute Parts

SN75C1167DB

Texas InstrumentsIn Stock: 1928SN75C1167DB Datasheet

Current PartRFQ

SN75C1167DBR

Texas InstrumentsIn Stock: 1767SN75C1167DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75C1167DB is determined by strict equivalence across the following critical parameters:

• Protocol Compatibility: Both main and substitute parts must support RS422 and RS485 protocols
• Transceiver Configuration: 2 drivers and 2 receivers (2/2 architecture)
• Duplex Mode: Half-duplex operation only
• Receiver Hysteresis: 60 mV specification
• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: 0°C to 70°C
• Package Specification: 16-SSOP form factor with identical 0.209" (5.30mm) width
• Surface Mount Compatibility: Identical mounting technology
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The SN75C1167DBR qualifies as a direct substitute based on identical electrical specifications and package geometry. The distinction between these parts is packaging format only: tube versus tape & reel.

Parameter Comparison

Engineering Selection Recommendations

The SN75C1167DBR is the direct electrical and mechanical equivalent of the SN75C1167DB. Selection between these parts should be based on the following factors:

For New Designs and Production Continuity: The SN75C1167DBR is recommended due to its Active product status. This part maintains ongoing manufacturer support and availability, ensuring long-term supply chain stability for production environments.

Packaging Considerations: The SN75C1167DB is supplied in tube packaging, suitable for lower-volume or manual assembly operations. The SN75C1167DBR is supplied in tape & reel format, optimized for high-volume automated assembly processes. Selection depends on production volume and assembly equipment capabilities.

Compliance and Quality: Both parts maintain identical ROHS3 compliance and MSL Level 1 ratings, ensuring equivalent environmental and reliability standards for industrial applications.

Last Time Buy Status: The SN75C1167DB's Last Time Buy designation indicates limited remaining inventory. Organizations currently using the tube-packaged variant should evaluate transition to the SN75C1167DBR to avoid future supply constraints.

Frequently Asked Questions (FAQ)

Q: Can the SN75C1167DBR replace the SN75C1167DB in existing designs?

A: Yes. The SN75C1167DBR is electrically and mechanically identical to the SN75C1167DB. All electrical parameters, pin configurations, and functional specifications match exactly. The only difference is the packaging format (tape & reel versus tube).

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging supplies components in plastic tubes, typically used for manual assembly or lower-volume production. Tape & reel packaging supplies components on continuous carrier tape wound on reels, designed for automated pick-and-place assembly equipment. Both formats contain identical components with identical specifications.

Q: Why is the SN75C1167DB marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory is being sold, but no new production runs are planned. The SN75C1167DBR remains in active production as the recommended alternative.

Q: Are there any electrical differences between these parts?

A: No. Both parts have identical electrical specifications: RS422/RS485 protocol support, 2/2 transceiver configuration, 60 mV receiver hysteresis, 4.5V to 5.5V supply voltage, and 0°C to 70°C operating temperature range.

Q: Can I use the SN75C1167DBR in high-volume automated assembly?

A: Yes. The tape & reel packaging of the SN75C1167DBR is specifically designed for automated pick-and-place assembly systems. This format is standard for high-volume production environments.

Q: Do both parts require the same PCB footprint?

A: Yes. Both parts use the identical 16-SSOP package with 0.209" (5.30mm) width. PCB footprints, land patterns, and assembly processes are identical.

Q: What compliance certifications apply to both parts?

A: Both the SN75C1167DB and SN75C1167DBR are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, meeting equivalent environmental and reliability standards.