SN75LBC175ADR Equivalent & Substitute Parts

Part Overview

The SN75LBC175ADR is a 0/4 Receiver interface IC manufactured by Texas Instruments, designed for RS422, RS423, and RS485 serial communication protocols. This 16-SOIC surface mount component operates at 4.75V to 5.25V supply voltage with a 50 Mbps data rate and 40 mV receiver hysteresis. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing design support and procurement planning. Alternative parts must maintain compatibility across electrical specifications, mechanical packaging, and communication protocol support.

Key Parameters

Parameter	SN75LBC175ADR
Manufacturer	Texas Instruments
Type	Receiver
Protocol	RS422, RS423, RS485
Number of Drivers/Receivers	0/4
Receiver Hysteresis	40 mV
Data Rate	50 Mbps
Voltage - Supply	4.75V ~ 5.25V
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	Last Time Buy

Substitute Part Grouping Explanation

Substitution eligibility for the SN75LBC175ADR is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Number of Drivers/Receivers: 0/4 (exact match required)
Package / Case: 16-SOIC (0.154", 3.90mm Width) (exact match required)
Mounting Type: Surface Mount (exact match required)
Voltage - Supply: 4.75V ~ 5.25V (exact match required)
Protocol Support: Must include RS422 and RS485 minimum

Allowable Variations:

Receiver Hysteresis: 40 mV to 45 mV (minor tolerance acceptable)
Data Rate: 50 Mbps or higher (higher performance acceptable)
Operating Temperature: May extend beyond 0°C ~ 70°C range (wider range acceptable)
Product Status: Active status preferred over Last Time Buy
Manufacturer: Different manufacturers acceptable if all electrical and mechanical parameters align

Substitute parts are grouped by manufacturer and packaging configuration while maintaining all mandatory compatibility criteria.

Parameter Comparison

Parameter	SN75LBC175ADR	SN65LBC175ADR	MAX3093ECSE+	MAX3093ECSE+T	MAX3093EESE+	MAX3093EESE+T
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Type	Receiver	Receiver	Receiver	Receiver	Receiver	Receiver
Protocol	RS422, RS423, RS485	RS422, RS423, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Number of Drivers/Receivers	0/4	0/4	0/4	0/4	0/4	0/4
Receiver Hysteresis	40 mV	40 mV	45 mV	45 mV	45 mV	45 mV
Data Rate	50 Mbps	50 Mbps	10 Mbps	10 Mbps	10 Mbps	10 Mbps
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active	Active	Active
Packaging	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tube	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Primary Substitute: SN65LBC175ADR

The SN65LBC175ADR is the direct Texas Instruments equivalent with identical electrical specifications and 16-SOIC packaging. This part maintains the 40 mV receiver hysteresis and 50 Mbps data rate of the original SN75LBC175ADR. The extended operating temperature range (-40°C to 85°C) provides broader environmental coverage. Active product status ensures long-term availability and supply chain continuity. This part is recommended as the first choice for direct replacement in new designs and ongoing production.

Secondary Substitutes: MAX3093 Series (Analog Devices Inc./Maxim Integrated)

The MAX3093ECSE+, MAX3093ECSE+T, MAX3093EESE+, and MAX3093EESE+T parts are functionally compatible alternatives from Analog Devices Inc./Maxim Integrated. All variants maintain the 0/4 receiver configuration, 16-SOIC package, and 4.75V to 5.25V supply voltage. These parts support RS422 and RS485 protocols (RS423 support not specified). The 45 mV receiver hysteresis is within acceptable tolerance of the original 40 mV specification. Data rate specification of 10 Mbps is lower than the original 50 Mbps; these parts are suitable for applications not requiring the full 50 Mbps bandwidth. All MAX3093 variants carry Active product status and ROHS3 compliance. Selection among MAX3093 variants depends on packaging requirements: MAX3093ECSE+ and MAX3093EESE+ are supplied in Tube packaging; MAX3093ECSE+T is supplied in Tape & Reel; MAX3093EESE+T is supplied in Cut Tape with Digi-Reel. Extended temperature variants (MAX3093EESE+ and MAX3093EESE+T) operate from -40°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can SN65LBC175ADR be used as a direct replacement for SN75LBC175ADR?

A: Yes. The SN65LBC175ADR maintains identical electrical specifications including 40 mV receiver hysteresis, 50 Mbps data rate, and 4.75V to 5.25V supply voltage. Both parts use 16-SOIC surface mount packaging. The extended operating temperature range of SN65LBC175ADR (-40°C to 85°C) is compatible with applications designed for the original 0°C to 70°C range. Active product status of SN65LBC175ADR ensures continued availability.

Q: What are the limitations of MAX3093 series substitutes?

A: MAX3093 series parts specify a 10 Mbps data rate compared to the 50 Mbps capability of SN75LBC175ADR and SN65LBC175ADR. These parts are suitable for applications operating at data rates up to 10 Mbps. The receiver hysteresis is 45 mV versus 40 mV in the original part, a 5 mV difference within normal engineering tolerance. RS423 protocol support is not specified for MAX3093 variants; these parts support RS422 and RS485 only.

Q: How do packaging options affect part selection?

A: Packaging affects procurement and assembly processes but does not alter electrical functionality. SN75LBC175ADR is supplied in Tape & Reel (TR). SN65LBC175ADR is available in Cut Tape (CT) with Digi-Reel. MAX3093ECSE+ and MAX3093EESE+ are supplied in Tube packaging. MAX3093ECSE+T is supplied in Tape & Reel. MAX3093EESE+T is supplied in Cut Tape with Digi-Reel. Select packaging based on assembly equipment compatibility and procurement volume requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SN75LBC175ADR, SN65LBC175ADR, and all MAX3093 variants are ROHS3 compliant. All parts are suitable for applications requiring RoHS compliance.

Q: What is the significance of Last Time Buy status for SN75LBC175ADR?

A: Last Time Buy status indicates that Texas Instruments will discontinue this part number. Existing inventory is available but future procurement will not be possible. SN65LBC175ADR (Active status) or MAX3093 series alternatives (Active status) should be selected for new designs and long-term production requirements to ensure supply chain continuity.

Q: Can MAX3093 parts be used in applications requiring 50 Mbps data rates?

A: No. MAX3093 series parts specify a maximum data rate of 10 Mbps. Applications requiring 50 Mbps operation must use SN75LBC175ADR or SN65LBC175ADR. For applications operating at data rates of 10 Mbps or lower, MAX3093 variants are functionally compatible.

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

A: Both parts have identical electrical specifications. The primary difference is operating temperature range: MAX3093ECSE+ operates from 0°C to 70°C (matching the original SN75LBC175ADR range), while MAX3093EESE+ operates from -40°C to 85°C (extended range). Select based on application temperature requirements. Both are supplied in Tube packaging.

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