DS26LS32CM Equivalent & Substitute Parts

Part Overview

The DS26LS32CM 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, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production support. The receiver operates at 4.5V to 5.5V supply voltage with a 100 mV receiver hysteresis specification, suitable for industrial and commercial serial communication applications requiring reliable data reception across extended cable runs.

Key Parameters

Parameter	DS26LS32CM
Manufacturer	Texas Instruments
Type	Receiver
Protocol Support	RS422, RS423
Number of Drivers/Receivers	0/4
Receiver Hysteresis	100 mV
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DS26LS32CM is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 16-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB layout compatibility without redesign.
Functional Type: All substitutes must be 0/4 Receiver ICs supporting serial communication protocols.
Protocol Support: Substitutes must support RS422 and/or RS423 protocols. Parts supporting RS422 and RS485 are acceptable as RS422 is a subset of these protocol families.
Electrical Operating Range: Supply voltage and operating temperature ranges determine application suitability. Parts with wider or equivalent ranges provide direct substitution capability.
Receiver Hysteresis: Hysteresis values between 45 mV and 120 mV are within acceptable tolerance for RS422/RS423 receiver applications.

The substitute parts are grouped into two categories based on product status and compliance posture:

Category 1 - Active, RoHS3 Compliant: SN75ALS193DR, MAX3096CSE+, MAX3096CSE+T, MAX3096ESE+, MAX3096ESE+T

Category 2 - Last Time Buy, RoHS3 Compliant: SP26LV432CN-L

Parameter Comparison

Part Number	Manufacturer	Protocol	Receiver Hysteresis	Voltage Supply	Operating Temperature	Data Rate	Product Status	RoHS Status
DS26LS32CM	Texas Instruments	RS422, RS423	100 mV	4.5V ~ 5.5V	0°C ~ 70°C	—	Obsolete	RoHS non-compliant
SN75ALS193DR	Texas Instruments	RS422, RS423	120 mV	4.75V ~ 5.25V	0°C ~ 70°C	—	Active	ROHS3 Compliant
MAX3096CSE+	Analog Devices Inc./Maxim Integrated	RS422, RS485	45 mV	3V ~ 3.6V	0°C ~ 70°C	10Mbps	Active	ROHS3 Compliant
MAX3096CSE+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	45 mV	3V ~ 3.6V	0°C ~ 70°C	10Mbps	Active	ROHS3 Compliant
MAX3096ESE+	Analog Devices Inc./Maxim Integrated	RS422, RS485	45 mV	3V ~ 3.6V	-40°C ~ 85°C	10Mbps	Active	ROHS3 Compliant
MAX3096ESE+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	45 mV	3V ~ 3.6V	-40°C ~ 85°C	10Mbps	Active	ROHS3 Compliant
SP26LV432CN-L	MaxLinear, Inc.	RS422, RS485	60 mV	3.3V	0°C ~ 70°C	50Mbps	Last Time Buy	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Minimal Design Changes:

SN75ALS193DR from Texas Instruments is the primary substitute. It maintains the same manufacturer lineage, operates within a compatible 5V supply range (4.75V ~ 5.25V), and supports identical RS422/RS423 protocols. The receiver hysteresis of 120 mV is within acceptable tolerance. This part is active and RoHS3 compliant, providing long-term availability and regulatory compliance.

For New Designs with Supply Voltage Flexibility:

The MAX3096 family (MAX3096CSE+, MAX3096CSE+T, MAX3096ESE+, MAX3096ESE+T) from Analog Devices Inc./Maxim Integrated offers active product status and RoHS3 compliance. These parts operate at 3V to 3.6V supply voltage, requiring power supply redesign if the original 5V architecture is retained. The MAX3096ESE+ and MAX3096ESE+T variants support extended operating temperature range (-40°C to 85°C), suitable for industrial applications. All MAX3096 variants support RS422 and RS485 protocols with 10Mbps data rate capability.

For High-Speed Applications:

SP26LV432CN-L from MaxLinear, Inc. supports 50Mbps data rate, significantly exceeding the performance of the original DS26LS32CM. This part operates at 3.3V supply voltage and is RoHS3 compliant. However, it carries Last Time Buy status, limiting its suitability for long-term production commitments.

Compliance Consideration:

All substitute parts are RoHS3 compliant, whereas the DS26LS32CM is RoHS non-compliant. Selection of any substitute part satisfies modern regulatory requirements for new product designs and manufacturing.

Frequently Asked Questions (FAQ)

Q: Can SN75ALS193DR directly replace DS26LS32CM without PCB modifications?

A: Yes. Both parts use the 16-SOIC package with identical pinout compatibility. The supply voltage range of SN75ALS193DR (4.75V ~ 5.25V) overlaps with DS26LS32CM (4.5V ~ 5.5V). Existing 5V power supplies will operate both parts within specification. No PCB layout changes are required.

Q: What is the key difference between MAX3096CSE+ and MAX3096ESE+ variants?

A: Both variants are functionally identical in protocol support, hysteresis, and data rate. The primary difference is operating temperature range: MAX3096CSE+ operates 0°C to 70°C, while MAX3096ESE+ operates -40°C to 85°C. Selection depends on the target application environment. The suffix designations (CSE+ vs. ESE+) and packaging options (Tube vs. Cut Tape) do not affect electrical performance.

Q: Why do MAX3096 parts require 3V to 3.6V supply voltage instead of 5V?

A: The MAX3096 family is designed for low-voltage applications and operates at 3.3V nominal supply. Designs using DS26LS32CM at 5V supply will require power supply modification or addition of a separate 3.3V rail to accommodate MAX3096 substitution. This represents a design change beyond simple component swapping.

Q: Is SP26LV432CN-L suitable for long-term production use?

A: SP26LV432CN-L carries Last Time Buy status, indicating the manufacturer has announced end-of-life. While current inventory is available (2833 Pcs), this part is not recommended for new designs requiring multi-year production support. It is suitable only for legacy system maintenance or short-term production runs.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tube and Cut Tape (CT) & Digi-Reel® packaging formats. Tube packaging is standard for lower-volume applications, while Cut Tape & Digi-Reel® is optimized for automated assembly lines. Both packaging formats contain the same 16-SOIC component; selection depends on manufacturing process requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (SN75ALS193DR, MAX3096 family, SP26LV432CN-L) are RoHS3 compliant. The original DS26LS32CM is RoHS non-compliant. Substitution with any listed part satisfies RoHS regulatory requirements for new designs and manufacturing in regulated markets.

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