SN75189ANS Equivalent & Substitute Parts

Part Overview

The SN75189ANS is a 0/4 Receiver RS232 interface integrated circuit manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production status. The SN75189ANS operates within a 4.5V to 5.5V supply voltage range and supports RS232 protocol communication at 1Mbps data rate across an operating temperature range of 0°C to 70°C. Due to its Last Time Buy status, identifying functionally equivalent substitute components is essential for design continuity and long-term supply chain management.

Substiute Parts

SN75189ANS

Texas InstrumentsIn Stock: 2525SN75189ANS Datasheet

Current PartRFQ

SN75C189ANSR

Texas InstrumentsIn Stock: 6425SN75C189ANSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75189ANS is determined by strict alignment of the following critical parameters:

Functional Parameters:

• Protocol: RS232
• Type: Receiver
• Number of Drivers/Receivers: 0/4
• Package / Case: 14-SOIC (0.209", 5.30mm Width)
• Mounting Type: Surface Mount

Electrical Parameters:

• Voltage - Supply range compatibility
• Operating Temperature range compatibility
• Data Rate capability

Compliance Parameters:

• RoHS3 Compliance
• Moisture Sensitivity Level (MSL)

The SN75C189ANSR qualifies as a direct substitute based on identical functional configuration (0/4 Receiver RS232), identical package geometry (14-SOIC), and compatible electrical specifications. The substitute part maintains ROHS3 compliance and MSL Level 1 rating. The primary distinction is product status: SN75C189ANSR is Active production, whereas SN75189ANS is Last Time Buy.

Parameter Comparison

Engineering Selection Recommendations

The SN75C189ANSR is the direct substitute for the SN75189ANS based on the following engineering criteria:

Functional Equivalence: Both components are 0/4 Receiver RS232 interface circuits with identical pin configuration and package geometry (14-SOIC). Electrical performance parameters align within specified operating ranges.

Supply Voltage Compatibility: The SN75C189ANSR supply voltage range (4.5V ~ 6V) encompasses the SN75189ANS range (4.5V ~ 5.5V), ensuring compatibility in existing circuit designs without modification.

Compliance Status: Both parts maintain ROHS3 compliance and MSL Level 1 rating, satisfying regulatory and environmental requirements for equivalent applications.

Production Status Advantage: The SN75C189ANSR is in Active production status, providing long-term supply availability and design continuity compared to the Last Time Buy status of the SN75189ANS.

Packaging: Both components are supplied in 14-SOIC surface mount packages with identical mechanical dimensions, enabling direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SN75C189ANSR directly replace the SN75189ANS in existing designs?

A: Yes. The SN75C189ANSR is a direct functional equivalent with identical package geometry, pin configuration, and RS232 receiver specifications. No circuit modifications are required for substitution.

Q: What is the difference between SN75189ANS and SN75C189ANSR?

A: The primary differences are product status and supply voltage range. SN75189ANS is Last Time Buy (discontinued), while SN75C189ANSR is in Active production. The SN75C189ANSR supply voltage range (4.5V ~ 6V) is slightly wider than SN75189ANS (4.5V ~ 5.5V), providing enhanced compatibility.

Q: Are the packaging specifications identical?

A: Yes. Both components use the 14-SOIC (0.209", 5.30mm Width) surface mount package with identical mechanical dimensions and pin spacing, ensuring PCB layout compatibility.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both SN75189ANS and SN75C189ANSR are ROHS3 compliant with MSL Level 1 rating, meeting environmental and regulatory standards.

Q: What is the data rate specification for these components?

A: The SN75189ANS specifies 1Mbps data rate. The SN75C189ANSR does not list a specific data rate parameter in the provided specifications, but maintains RS232 protocol compatibility for standard serial communication applications.

Q: Why is SN75189ANS marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this part number. The SN75C189ANSR is the recommended active production alternative for continued supply and design support.