SN65LBC175ADR Equivalent & Substitute Parts

Part Overview

The SN65LBC175ADR is an active RS422, RS423, and RS485 receiver interface IC manufactured by Texas Instruments. This 16-SOIC surface mount device operates at 4.75V to 5.25V supply voltage with a 40 mV receiver hysteresis and supports data rates up to 50 Mbps across the -40°C to 85°C operating temperature range. The part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), making it suitable for industrial and commercial applications requiring robust serial communication interfaces.

The SN65LBC175ADR is currently in active production status with 3000 pieces in stock. Equivalent and substitute parts are identified based on matching electrical characteristics, protocol support, package compatibility, and operational parameters that ensure functional interchangeability in RS422/RS423/RS485 receiver applications.

Key Parameters

Parameter	SN65LBC175ADR
Manufacturer	Texas Instruments
Type	Receiver
Protocol Support	RS422, RS423, RS485
Number of Drivers/Receivers	0/4
Receiver Hysteresis	40 mV
Data Rate	50 Mbps
Voltage Supply Range	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the SN65LBC175ADR is determined by the following critical parameters:

Primary Compatibility Criteria:

Protocol support (RS422, RS423, RS485 receiver functionality)
Number of receivers (0/4 configuration)
Package type (16-SOIC surface mount)
Voltage supply range compatibility (4.75V ~ 5.25V or wider range)
Operating temperature range (-40°C ~ 85°C or wider)
Receiver hysteresis within acceptable tolerance (40 mV baseline)
Data rate capability (50 Mbps or higher)
RoHS3 compliance and MSL 1 rating

Substitute Categories:

Category 1: Texas Instruments DS34C86 Series – Direct protocol substitutes with identical package footprint, 16-SOIC form factor, and extended voltage supply range (4.5V ~ 5.5V). These parts support RS422 and RS423 protocols with 60 mV receiver hysteresis. Available in both tube and cut tape packaging options.

Category 2: Analog Devices LTC489 Series – RS422 and RS485 receiver alternatives with 16-SOIC package (0.295" width variant), 60 mV receiver hysteresis, and 4.75V ~ 5.25V supply voltage. Temperature-rated variants available for -40°C ~ 85°C and 0°C ~ 70°C ranges.

Category 3: Analog Devices/Maxim Integrated MAX3093 Series – RS422 and RS485 receiver options with 16-SOIC package (0.154" width, matching SN65LBC175ADR footprint), 45 mV receiver hysteresis, and 10 Mbps data rate. Temperature-rated variants support both 0°C ~ 70°C and -40°C ~ 85°C ranges.

Parameter Comparison

Part Number	Manufacturer	Protocol	Receivers	Hysteresis	Data Rate	Supply Voltage	Temp Range	Package	Packaging Type
SN65LBC175ADR	Texas Instruments	RS422, RS423, RS485	0/4	40 mV	50 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Cut Tape & Digi-Reel
DS34C86TM/NOPB	Texas Instruments	RS422, RS423	0/4	60 mV	—	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Tube
DS34C86TMX/NOPB	Texas Instruments	RS422, RS423	0/4	60 mV	—	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Cut Tape & Digi-Reel
LTC489CSW#TRPBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC (0.295")	Tape & Reel
LTC489ISW#PBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.295")	Tube
LTC489ISW#TRPBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.295")	Tape & Reel
MAX3093ECSE+	Analog Devices Inc./Maxim Integrated	RS422, RS485	0/4	45 mV	10 Mbps	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC (0.154")	Tube
MAX3093ECSE+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	0/4	45 mV	10 Mbps	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC (0.154")	Tape & Reel
MAX3093EESE+	Analog Devices Inc./Maxim Integrated	RS422, RS485	0/4	45 mV	10 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Tube
MAX3093EESE+T	Analog Devices Inc./Maxim Integrated	RS422, RS485	0/4	45 mV	10 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Cut Tape & Digi-Reel

Engineering Selection Recommendations

For Direct Pin-Compatible Substitution with Identical Footprint:

The DS34C86TMX/NOPB and DS34C86TM/NOPB (Texas Instruments) provide the closest electrical compatibility with the SN65LBC175ADR. Both maintain the 16-SOIC (0.154" width) package footprint, support RS422 and RS423 protocols, and operate across the -40°C to 85°C temperature range. The extended supply voltage range (4.5V ~ 5.5V) provides additional design margin. These parts are ROHS3 compliant with MSL 1 rating and active production status. The DS34C86TMX/NOPB is available in cut tape packaging with 9983 pieces in stock, while the DS34C86TM/NOPB is supplied in tube format with 3967 pieces available.

For Extended Temperature Range with Matching Footprint:

The MAX3093EESE+T (Analog Devices Inc./Maxim Integrated) maintains the identical 16-SOIC (0.154" width) package footprint and supports the full -40°C to 85°C operating temperature range. This part is ROHS3 compliant, MSL 1 rated, and in active production with 6235 pieces in cut tape packaging. The 45 mV receiver hysteresis is tighter than the SN65LBC175ADR baseline, and the 10 Mbps data rate is lower than the 50 Mbps specification, making this option suitable for applications where the full 50 Mbps bandwidth is not required.

For Industrial Temperature Applications (0°C ~ 70°C):

The LTC489CSW#TRPBF (Analog Devices Inc.) provides RS422 and RS485 receiver functionality with ROHS3 compliance and MSL 1 rating. This part operates within the 4.75V ~ 5.25V supply range and is available in tape & reel packaging with 6432 pieces in stock. The 16-SOIC package width is 0.295", which differs from the SN65LBC175ADR footprint and requires PCB layout verification.

All substitute parts listed carry ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity ratings, matching the environmental and regulatory requirements of the original part.

Frequently Asked Questions (FAQ)

Q: Can the DS34C86 series directly replace the SN65LBC175ADR without PCB modifications?

A: Yes. The DS34C86TM/NOPB and DS34C86TMX/NOPB maintain the identical 16-SOIC (0.154" width) package footprint as the SN65LBC175ADR. Both are surface mount devices with matching pin configurations for RS422 and RS423 receiver applications. The extended supply voltage range (4.5V ~ 5.5V) is backward compatible with the SN65LBC175ADR supply specification (4.75V ~ 5.25V).

Q: What is the difference between the MAX3093ECSE+T and MAX3093EESE+T variants?

A: Both parts share identical electrical specifications (45 mV hysteresis, 10 Mbps data rate, 4.75V ~ 5.25V supply, 16-SOIC 0.154" package, ROHS3 compliance, MSL 1 rating). The primary difference is operating temperature range: MAX3093ECSE+T operates 0°C ~ 70°C, while MAX3093EESE+T operates -40°C ~ 85°C. The MAX3093EESE+T is suitable for applications requiring the full industrial temperature range matching the SN65LBC175ADR specification.

Q: Are the LTC489 series parts compatible with the SN65LBC175ADR package footprint?

A: The LTC489 series uses a 16-SOIC package with 0.295" width, which differs from the SN65LBC175ADR 16-SOIC (0.154" width) footprint. PCB layout modifications are required for physical substitution. Pin-level compatibility for RS422 and RS485 receiver functions is maintained, but the larger package width necessitates design review.

Q: Which substitute part has the highest data rate capability?

A: The SN65LBC175ADR itself specifies 50 Mbps data rate. Among the listed substitutes, the DS34C86 series and LTC489 series do not specify data rate limits, while the MAX3093 series specifies 10 Mbps. For applications requiring 50 Mbps performance, the SN65LBC175ADR or DS34C86 series are recommended.

Q: Do all substitute parts meet the same compliance and environmental standards?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level rating, matching the SN65LBC175ADR environmental and regulatory profile. All parts are in active production status with current inventory availability.

Q: What is the receiver hysteresis difference between the SN65LBC175ADR and MAX3093 substitutes?

A: The SN65LBC175ADR specifies 40 mV receiver hysteresis, while the MAX3093 series specifies 45 mV. The DS34C86 and LTC489 series specify 60 mV. Higher hysteresis values provide greater noise immunity but may reduce sensitivity to small signal transitions. For noise-sensitive applications, the MAX3093 series (45 mV) is closer to the original specification than the DS34C86 or LTC489 series (60 mV).

Q: What packaging options are available for each substitute part?

A: DS34C86TM/NOPB is supplied in tube packaging; DS34C86TMX/NOPB is available in cut tape & Digi-Reel format. LTC489CSW#TRPBF and LTC489ISW#TRPBF are supplied in tape & reel; LTC489ISW#PBF is available in tube. MAX3093ECSE+ and MAX3093EESE+ are supplied in tube; MAX3093ECSE+T and MAX3093EESE+T are available in tape & reel or cut tape & Digi-Reel formats. Packaging selection depends on production volume and assembly process requirements.

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