SN65LBC175AD Equivalent & Substitute Parts

Part Overview

The SN65LBC175AD is a 0/4 Receiver RS422, RS423, RS485 interface IC manufactured by Texas Instruments in 16-SOIC surface mount packaging. This component is classified as Last Time Buy, indicating limited availability and the necessity to identify equivalent alternatives for ongoing design requirements and production continuity. The SN65LBC175AD operates within a 4.75V to 5.25V supply voltage range with a 50Mbps data rate and 40mV receiver hysteresis, making it suitable for industrial serial communication applications requiring RS422, RS423, and RS485 protocol support.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN65LBC175AD
Manufacturer	Texas Instruments
Type	Receiver
Protocol Support	RS422, RS423, RS485
Number of Drivers/Receivers	0/4
Receiver Hysteresis	40 mV
Data Rate	50Mbps
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution of the SN65LBC175AD is determined by the following critical parameters: protocol support (RS422, RS423, RS485), receiver configuration (0/4), package type (16-SOIC), supply voltage range compatibility, operating temperature range, and receiver hysteresis specifications. Parts are grouped into two categories:

MFR Recommended Substitutes maintain identical or superior electrical specifications and active product status, ensuring direct replacement capability with no design modifications required.

Parametric Equivalents share core functional characteristics but may have minor variations in receiver hysteresis, data rate specifications, or product status. These parts are suitable for applications where the specific parameter variance does not impact system performance.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	Product Status
SN65LBC175AD	Texas Instruments	RS422, RS423, RS485	0/4	40 mV	50Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Last Time Buy
SN65LBC175ADR	Texas Instruments	RS422, RS423, RS485	0/4	40 mV	50Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Active
DS34C86TM/NOPB	Texas Instruments	RS422, RS423	0/4	60 mV	—	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active
DS34C86TMX/NOPB	Texas Instruments	RS422, RS423	0/4	60 mV	—	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC (0.154")	Active
SN65LBC173D	Texas Instruments	RS422, RS423, RS485	0/4	40 mV	50Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Last Time Buy
SN65LBC175D	Texas Instruments	RS422, RS423, RS485	0/4	40 mV	50Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.154")	Last Time Buy
LTC489CSW#PBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC (0.295")	Active
LTC489CSW#TRPBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC (0.295")	Active
LTC489ISW#PBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.295")	Active
LTC489ISW#TRPBF	Analog Devices Inc.	RS422, RS485	0/4	60 mV	—	4.75V ~ 5.25V	-40°C ~ 85°C	16-SOIC (0.295")	Active
MAX3093ECSE+	Analog Devices Inc./Maxim Integrated	RS422, RS485	0/4	45 mV	10Mbps	4.75V ~ 5.25V	0°C ~ 70°C	16-SOIC (0.154")	Active

Engineering Selection Recommendations

Primary Recommendation: SN65LBC175ADR

The SN65LBC175ADR is the direct successor to the SN65LBC175AD, manufactured by Texas Instruments with identical electrical specifications and active product status. This part maintains 40mV receiver hysteresis, 50Mbps data rate, and full RS422, RS423, RS485 protocol support. The only difference is packaging format (Cut Tape & Digi-Reel versus Tube), which does not affect electrical performance. This part is ROHS3 compliant and carries the same ECCN classification.

Secondary Recommendation: LTC489ISW#TRPBF or LTC489ISW#PBF

For applications requiring extended operating temperature range (-40°C to 85°C), the LTC489ISW series from Analog Devices Inc. provides active product status with identical supply voltage specifications. These parts support RS422 and RS485 protocols with 60mV receiver hysteresis. The wider temperature range matches the original part's specifications. Package width differs (0.295" versus 0.154"), requiring PCB layout verification.

Alternative: DS34C86TMX/NOPB

The DS34C86TMX/NOPB offers active product status with expanded supply voltage range (4.5V to 5.5V), providing greater tolerance margin. This part supports RS422 and RS423 protocols with 60mV receiver hysteresis. The narrower package width (0.154") matches the original part's footprint. Data rate specification is not provided for this part.

Compliance Considerations

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating. The SN65LBC175ADR and DS34C86TMX/NOPB retain the same ECCN classification (5A991B1) as the original part, while Analog Devices parts carry EAR99 classification. REACH status remains unaffected across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can SN65LBC175ADR be used as a direct drop-in replacement for SN65LBC175AD?

A: Yes. The SN65LBC175ADR is electrically identical to the SN65LBC175AD with matching receiver hysteresis (40mV), data rate (50Mbps), supply voltage (4.75V to 5.25V), and operating temperature range (-40°C to 85°C). The only difference is packaging format (Cut Tape & Digi-Reel versus Tube), which does not affect circuit performance. Both parts use the same 16-SOIC (0.154") package footprint.

Q: What is the difference between the DS34C86 series and the SN65LBC175 series?

A: The DS34C86 series supports RS422 and RS423 protocols, while the SN65LBC175 series supports RS422, RS423, and RS485. The DS34C86 has higher receiver hysteresis (60mV versus 40mV) and a wider supply voltage range (4.5V to 5.5V versus 4.75V to 5.25V). Data rate is not specified for the DS34C86 series. Both maintain identical 0/4 receiver configuration and 16-SOIC packaging.

Q: Are Analog Devices LTC489 parts compatible with the SN65LBC175AD?

A: The LTC489 series is functionally compatible for RS422 and RS485 applications. Key differences include 60mV receiver hysteresis (versus 40mV), wider package width (0.295" versus 0.154"), and operating temperature range variations. The LTC489ISW variants support the full -40°C to 85°C temperature range. PCB layout modifications may be required due to package width differences.

Q: What does "Last Time Buy" status mean for the SN65LBC175AD?

A: Last Time Buy indicates that Texas Instruments has discontinued or will discontinue production of this part. Existing inventory is available for purchase, but no future production is planned. Users should transition to active alternatives such as SN65LBC175ADR to ensure long-term supply availability.

Q: Can I use MAX3093ECSE+ as a substitute?

A: The MAX3093ECSE+ supports RS422 and RS485 protocols with identical supply voltage (4.75V to 5.25V) and package footprint (16-SOIC, 0.154"). However, it has lower data rate (10Mbps versus 50Mbps) and narrower operating temperature range (0°C to 70°C versus -40°C to 85°C). This part is suitable only for applications not requiring the full temperature range or high-speed data transmission.

Q: What packaging options are available for substitutes?

A: Substitutes are available in Tube, Cut Tape & Digi-Reel, and Tape & Reel packaging formats. The SN65LBC175ADR is available in Cut Tape & Digi-Reel format. The DS34C86 series is available in both Tube and Cut Tape & Digi-Reel formats. Analog Devices LTC489 parts are available in Tube and Tape & Reel formats. Package format selection does not affect electrical performance but may impact procurement and assembly processes.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original SN65LBC175AD specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message