DS14C89AM RS232 Receiver IC Equivalent & Substitute Parts

Part Overview

The DS14C89AM is a 0/4 Receiver RS232 interface IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The DS14C89AM operates with dual supply voltages (5V, 12V) and features 1V receiver hysteresis, suitable for RS232 communication applications requiring reliable signal reception across industrial and commercial temperature ranges (0°C to 70°C).

Substiute Parts

DS14C89AM

Texas InstrumentsIn Stock: 1879DS14C89AM Datasheet

Current PartRFQ

DS14C89AM/NOPB

Texas InstrumentsIn Stock: 1265DS14C89AM/NOPB Datasheet

DirectRFQ

SN75C189AD

Texas InstrumentsIn Stock: 3198SN75C189AD Datasheet

MFR RecommendedRFQ

MAX1489ECSD+

Analog Devices Inc./Maxim IntegratedIn Stock: 12849MAX1489ECSD+ Datasheet

MFR RecommendedRFQ

MAX1489ECSD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1397MAX1489ECSD+T Datasheet

MFR RecommendedRFQ

MAX1489EESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1490MAX1489EESD+ Datasheet

MFR RecommendedRFQ

MAX1489EESD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3313MAX1489EESD+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DS14C89AM is determined by the following critical parameters: RS232 protocol compliance, 0/4 receiver/driver configuration, 14-SOIC package footprint, surface mount mounting type, and compatible supply voltage ranges. Substitute parts must maintain electrical equivalence in receiver hysteresis, operating temperature range, and data rate specifications where applicable.

The substitute parts are grouped into three categories:

Direct Equivalent (Same Manufacturer): DS14C89AM/NOPB maintains identical electrical specifications and package configuration, differing only in packaging format (Tube) and RoHS compliance status (ROHS3 Compliant).

Manufacturer-Recommended Alternatives (Texas Instruments): SN75C189AD provides functional equivalence with minor parameter variations in receiver hysteresis (970 mV vs. 1 V) and supply voltage range (4.5V ~ 6V vs. 5V, 12V). Product status is Last Time Buy.

Manufacturer-Recommended Alternatives (Analog Devices Inc./Maxim Integrated): MAX1489 series parts (MAX1489ECSD+, MAX1489ECSD+T, MAX1489EESD+, MAX1489EESD+T) provide functional equivalence with active product status. These parts feature receiver hysteresis of 1.11 V, supply voltage range of 4.5V ~ 5.5V, and data rate specification of 120 Kbps. Temperature variants include standard (0°C ~ 70°C) and extended (-40°C ~ 85°C) ranges.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): DS14C89AM/NOPB is the direct equivalent with ROHS3 compliance, suitable for applications where RoHS compliance is required and inventory of the original DS14C89AM is unavailable.

For Last Time Buy Applications: SN75C189AD is classified as Last Time Buy status, indicating limited future availability. This part is suitable for legacy system support where supply voltage tolerance of 4.5V ~ 6V accommodates the original 5V, 12V specification. Receiver hysteresis of 970 mV is within acceptable tolerance of the original 1 V specification.

For New Designs and Long-Term Availability: MAX1489 series parts (MAX1489ECSD+, MAX1489ECSD+T, MAX1489EESD+, MAX1489EESD+T) are active products with extended production roadmaps. These parts provide ROHS3 compliance and specified data rate of 120 Kbps. Selection between variants depends on operating temperature requirements: standard temperature range (0°C ~ 70°C) for MAX1489ECSD+ and MAX1489ECSD+T, or extended temperature range (-40°C ~ 85°C) for MAX1489EESD+ and MAX1489EESD+T. Packaging format selection (Tube vs. Cut Tape & Digi-Reel) depends on procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can DS14C89AM be directly replaced with MAX1489ECSD+ in existing designs?

A: Yes. Both parts maintain 0/4 receiver configuration, RS232 protocol compliance, 14-SOIC package footprint, and surface mount mounting. Supply voltage range of MAX1489ECSD+ (4.5V ~ 5.5V) is compatible with the original 5V specification. Receiver hysteresis difference (1.11 V vs. 1 V) is within acceptable tolerance for RS232 signal reception.

Q: What is the difference between MAX1489ECSD+ and MAX1489EESD+?

A: Both parts are functionally equivalent with identical electrical specifications (receiver hysteresis 1.11 V, data rate 120 Kbps, supply voltage 4.5V ~ 5.5V). The primary difference is operating temperature range: MAX1489ECSD+ operates 0°C ~ 70°C, while MAX1489EESD+ operates -40°C ~ 85°C. Select MAX1489EESD+ for applications requiring extended temperature performance.

Q: What is the difference between MAX1489ECSD+ and MAX1489ECSD+T?

A: Both parts are functionally equivalent with identical electrical specifications. The difference is packaging format: MAX1489ECSD+ is supplied in Tube packaging, while MAX1489ECSD+T is supplied in Cut Tape (CT) & Digi-Reel format. Selection depends on procurement and assembly line requirements.

Q: Is SN75C189AD suitable as a substitute for DS14C89AM?

A: SN75C189AD is functionally suitable with 0/4 receiver configuration, RS232 protocol, and 14-SOIC package. However, SN75C189AD is classified as Last Time Buy, indicating limited future availability. For new designs, MAX1489 series parts are recommended due to active product status and extended production support.

Q: Are all substitute parts RoHS compliant?

A: DS14C89AM is RoHS non-compliant. All substitute parts listed (DS14C89AM/NOPB, SN75C189AD, MAX1489 series) are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What supply voltage should be used with MAX1489 series parts?

A: MAX1489 series parts operate with supply voltage range of 4.5V ~ 5.5V. This range is compatible with the original 5V specification of DS14C89AM. Applications requiring 12V supply voltage must use alternative parts or implement voltage regulation to the 4.5V ~ 5.5V range.