DS1489AM Equivalent & Substitute Parts

Part Overview

The DS1489AM is a 0/4 Receiver RS232 interface IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is classified as obsolete and is no longer in active production. The DS1489AM operates within a supply voltage range of 4.75V to 5.25V and supports operating temperatures from 0°C to 75°C. Due to its obsolete status, identifying equivalent and substitute parts is necessary for system redesign, component sourcing, and long-term product support.

Substiute Parts

DS1489AM

Texas InstrumentsIn Stock: 1567DS1489AM Datasheet

Current PartRFQ

SN75189ADR

Texas InstrumentsIn Stock: 9322SN75189ADR Datasheet

MFR RecommendedRFQ

SN75189DR

Texas InstrumentsIn Stock: 3186SN75189DR Datasheet

MFR RecommendedRFQ

SN75C189AD

Texas InstrumentsIn Stock: 3198SN75C189AD Datasheet

MFR RecommendedRFQ

SN75C189ADR

Texas InstrumentsIn Stock: 6543SN75C189ADR Datasheet

MFR RecommendedRFQ

SN75C189ANSR

Texas InstrumentsIn Stock: 6425SN75C189ANSR Datasheet

MFR RecommendedRFQ

SN75C189DR

Texas InstrumentsIn Stock: 61336SN75C189DR Datasheet

MFR RecommendedRFQ

SN75189AD

Texas InstrumentsIn Stock: 2710SN75189AD Datasheet

DirectRFQ

SN75189D

Texas InstrumentsIn Stock: 2241SN75189D Datasheet

MFR RecommendedRFQ

SN75C189D

Texas InstrumentsIn Stock: 3724SN75C189D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DS1489AM are determined by the following critical parameters:

• RS232 protocol compatibility
• 0/4 receiver configuration (zero drivers, four receivers)
• 14-SOIC surface mount package with 0.154" (3.90mm) width
• Supply voltage range overlap with the original part
• Operating temperature range compatibility

The substitute parts are grouped into two categories based on voltage supply specifications and receiver hysteresis characteristics:

Category 1: SN75189 Series - Supply voltage 4.5V ~ 5.5V, compatible with DS1489AM voltage range

• SN75189ADR (Active, Cut Tape & Digi-Reel)
• SN75189DR (Last Time Buy, Cut Tape & Digi-Reel)
• SN75189AD (Active, Tube)
• SN75189D (Last Time Buy, Tube)

Category 2: SN75C189 Series - Supply voltage 4.5V ~ 6V, extended upper voltage limit

• SN75C189ADR (Active, Tape & Reel) - Receiver Hysteresis 970 mV
• SN75C189AD (Last Time Buy, Tube) - Receiver Hysteresis 970 mV
• SN75C189DR (Active, Tape & Reel) - Receiver Hysteresis 330 mV
• SN75C189D (Last Time Buy, Tube) - Receiver Hysteresis 330 mV
• SN75C189ANSR (Active, Tape & Reel) - 14-SO package variant (0.209", 5.30mm width)

Parameter Comparison

Engineering Selection Recommendations

For applications requiring a direct replacement for the DS1489AM, the SN75189 series provides the closest electrical compatibility with supply voltage range 4.5V ~ 5.5V, which overlaps the original part's 4.75V ~ 5.25V specification. Among the SN75189 variants, SN75189ADR is recommended as the primary substitute due to its active product status and availability in Cut Tape & Digi-Reel packaging.

For new designs or applications where extended voltage tolerance is beneficial, the SN75C189 series offers supply voltage range 4.5V ~ 6V with active product status options. SN75C189ADR and SN75C189DR are both active parts suitable for production use.

All substitute parts listed are ROHS3 compliant, addressing regulatory requirements that the original DS1489AM does not meet. The operating temperature range of substitute parts (0°C ~ 70°C) is narrower than the original part (0°C ~ 75°C); applications requiring operation above 70°C must evaluate thermal performance independently.

The SN75C189ANSR variant uses a 14-SO package with 5.30mm width instead of the standard 3.90mm SOIC package and requires PCB layout modification for mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN75189ADR directly replace DS1489AM without circuit modification?

A: SN75189ADR is electrically compatible with DS1489AM for the specified functional parameters (RS232 protocol, 0/4 receiver configuration, 14-SOIC package). Both parts share identical pinout and package dimensions (0.154", 3.90mm width). No circuit modification is required for functional substitution. However, the operating temperature range differs (0°C ~ 70°C vs. 0°C ~ 75°C), which must be evaluated for specific applications.

Q: What is the difference between SN75189 and SN75C189 series?

A: The primary difference is the supply voltage range. SN75189 operates at 4.5V ~ 5.5V, while SN75C189 operates at 4.5V ~ 6V. The SN75C189 series also specifies receiver hysteresis characteristics (970 mV or 330 mV depending on variant), which is not provided for the original DS1489AM or SN75189 series. Both series are RS232 0/4 receiver ICs in 14-SOIC packages.

Q: Why is SN75C189ANSR listed separately?

A: SN75C189ANSR uses a 14-SO package with 5.30mm width, compared to the standard 14-SOIC package with 3.90mm width used by all other substitutes. This package variant requires different PCB footprint and layout considerations. It is listed for applications where this specific package form factor is required.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (SN75189 and SN75C189 series) are ROHS3 compliant. The original DS1489AM is RoHS non-compliant. This compliance difference must be considered for applications subject to RoHS regulations.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in three packaging formats: Cut Tape & Digi-Reel (CT), Tube, and Tape & Reel (TR). Selection depends on production volume and assembly requirements. Cut Tape & Digi-Reel packaging is suitable for lower-volume or mixed-component assembly, while Tape & Reel packaging is standard for high-volume automated assembly.

Q: Which substitute part has the longest product lifecycle?

A: SN75189ADR, SN75C189ADR, SN75C189DR, and SN75C189ANSR all have Active product status, indicating ongoing production and support. Parts with Last Time Buy status (SN75189DR, SN75189D, SN75C189AD, SN75C189D) have limited availability and should not be selected for new designs requiring long-term supply.