DS26LS32ACMX/NOPB Equivalent & Substitute Parts

Part Overview

The DS26LS32ACMX/NOPB is a 0/4 Receiver IC for RS422 and RS423 serial communication protocols, manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The receiver features 100 mV hysteresis and operates across a 4.5V to 5.5V supply voltage range at temperatures from 0°C to 70°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	DS26LS32ACMX/NOPB
Manufacturer	Texas Instruments
Category	Interface
Type	Receiver
Protocol	RS422, RS423
Number of Drivers/Receivers	0/4
Receiver Hysteresis	100 mV
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the DS26LS32ACMX/NOPB is determined by the following critical parameters:

Package compatibility: 16-SOIC form factor with 0.154" width (3.90mm)
Functional equivalence: 0/4 Receiver configuration
Protocol support: RS422 and RS423 compatibility
Electrical specifications: Supply voltage range and receiver hysteresis
Operating temperature range: 0°C to 70°C minimum requirement
Surface mount technology and RoHS3 compliance

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Substitutes maintain identical or compatible electrical and mechanical specifications with active or available product status.

Upgrade Options extend operating temperature range to -40°C to 85°C, providing enhanced performance for wider environmental applications.

Manufacturer Recommended Alternatives offer functional equivalence with minor parameter variations such as receiver hysteresis differences (60 mV vs. 100 mV) while maintaining protocol support and package compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Protocol	Receiver Hysteresis (mV)	Supply Voltage	Operating Temperature	Package	Inventory
DS26LS32ACMX/NOPB	Texas Instruments	Obsolete	RS422, RS423	100	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	1430
AM26LS32ACDR	Texas Instruments	Active	RS422, RS423	50	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC	38682
AM26LS33ACD	Texas Instruments	Last Time Buy	—	50	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC	3300
AM26LS33ACDR	Texas Instruments	Active	—	50	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC	10200
SN75173DR	Texas Instruments	Active	RS422, RS423, RS485	50	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC	1207
AM26LS32AID	Texas Instruments	Last Time Buy	RS422, RS423	50	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC	4370
AM26LS32AIDR	Texas Instruments	Active	RS422, RS423	50	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC	8860
AM26C32CD	Texas Instruments	Last Time Buy	RS422, RS423	60	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	3000
AM26C32CDR	Texas Instruments	Obsolete	RS422, RS423	60	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	11463
AM26C32ID	Texas Instruments	Last Time Buy	RS422, RS423	60	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	2909
AM26C32IDR	Texas Instruments	Active	RS422, RS423	60	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	22800

Engineering Selection Recommendations

For Direct Replacement with Active Status: AM26LS32ACDR is the primary direct substitute, offering active product status with 38,682 units in stock. It maintains RS422/RS423 protocol support and 16-SOIC packaging. The receiver hysteresis is reduced to 50 mV and supply voltage range narrows to 4.75V–5.25V, which is compatible with standard 5V systems. Operating temperature remains 0°C–70°C.

For Extended Temperature Range Applications: AM26LS32AIDR provides active status with -40°C to 85°C operating range, suitable for industrial and automotive environments. With 8,860 units available, this part maintains RS422/RS423 protocol support and identical 16-SOIC packaging while offering enhanced thermal performance.

For Voltage Range Compatibility: AM26C32IDR is recommended when the full 4.5V–5.5V supply voltage range of the original part is required. This active part supports -40°C to 85°C operation and maintains RS422/RS423 protocols with 22,800 units in stock. Receiver hysteresis is 60 mV, providing a middle ground between the original 100 mV and the 50 mV alternatives.

For RS485 Protocol Support: SN75173DR extends protocol compatibility to include RS485 in addition to RS422/RS423, available in active status with 1,207 units. This part operates at 0°C–70°C with 50 mV hysteresis and 4.75V–5.25V supply range.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited), and identical 16-SOIC surface mount packaging.

Frequently Asked Questions (FAQ)

Q: Can AM26LS32ACDR directly replace DS26LS32ACMX/NOPB in existing designs?

A: Yes, AM26LS32ACDR is a direct functional substitute. Both parts are 0/4 Receivers in 16-SOIC packages supporting RS422/RS423 protocols. The supply voltage range narrows from 4.5V–5.5V to 4.75V–5.25V, which is acceptable for standard 5V applications. Receiver hysteresis decreases from 100 mV to 50 mV, improving noise immunity. Operating temperature remains 0°C–70°C.

Q: What is the difference between AM26LS32AIDR and AM26LS32ACDR?

A: Both parts are active Texas Instruments products in 16-SOIC packages with identical electrical specifications. The primary difference is operating temperature range: AM26LS32ACDR operates 0°C–70°C, while AM26LS32AIDR extends to -40°C–85°C. Select AM26LS32AIDR for applications requiring wider temperature performance.

Q: Why do some substitute parts have different receiver hysteresis values?

A: Receiver hysteresis determines the voltage threshold differential for signal detection. The original DS26LS32ACMX/NOPB specifies 100 mV hysteresis. Substitutes with 50 mV or 60 mV hysteresis provide tighter threshold control, improving noise rejection in cleaner signal environments. All values remain within RS422/RS423 specification compliance.

Q: Is AM26C32IDR compatible with the original part's supply voltage range?

A: Yes. AM26C32IDR maintains the full 4.5V–5.5V supply voltage range of DS26LS32ACMX/NOPB, making it suitable for systems requiring extended voltage tolerance. It also provides -40°C–85°C operating temperature with active product status and 22,800 units in stock.

Q: Can SN75173DR be used as a substitute if RS485 support is not needed?

A: Yes. SN75173DR functions as a 0/4 Receiver for RS422 and RS423 protocols identical to the original part. The additional RS485 capability does not interfere with RS422/RS423 operation. It operates at 0°C–70°C with 50 mV hysteresis and 4.75V–5.25V supply range in active status.

Q: What packaging options are available for these substitutes?

A: All substitute parts listed maintain the 16-SOIC (0.154", 3.90mm Width) surface mount package. Packaging formats vary by part number: Cut Tape (CT) & Digi-Reel®, Tube, or Tape & Reel (TR). Verify packaging availability with your supplier based on production volume requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 Compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance certifications.

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