DS75176BTM Equivalent & Substitute Parts

Part Overview

The DS75176BTM is a half-duplex RS422/RS485 transceiver manufactured by Texas Instruments in an 8-SOIC package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The DS75176BTM operates on a 4.75V to 5.25V supply with a receiver hysteresis of 70 mV and supports industrial temperature ranges from -40°C to 85°C. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Key Parameters

Parameter	DS75176BTM
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS422, RS485
Duplex Configuration	Half
Number of Drivers/Receivers	1/1
Package / Case	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply	4.75V ~ 5.25V
Receiver Hysteresis	70 mV
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DS75176BTM is determined by the following critical parameters:

Protocol Compatibility: All substitutes must support RS422 and RS485 protocols
Duplex Configuration: Half-duplex operation required
Driver/Receiver Count: 1/1 configuration mandatory
Package Type: 8-SOIC (0.154", 3.90mm Width) for direct PCB compatibility
Mounting Type: Surface mount only
Supply Voltage Range: Must accommodate 4.75V to 5.25V operation or broader range
Operating Temperature: Must support at least -40°C to 85°C range

Substitute parts are grouped into two categories based on supply voltage compatibility:

Category A - 5V Supply Compatible (4.75V ~ 5.25V): LT1785 series parts from Analog Devices maintain the original 5V supply specification with enhanced RoHS3 compliance and active product status.

Category B - Wide Supply Range (3V ~ 5.5V): MAX14783 series and ISL3179 series parts offer extended supply voltage ranges, enabling operation across broader input specifications while maintaining RS422/RS485 functionality.

Parameter Comparison

Parameter	DS75176BTM	ISL3179EFBZ	LT1785ACS8#PBF	MAX14783EESA+
Manufacturer	Texas Instruments	Renesas Electronics	Analog Devices Inc.	Analog Devices Inc./Maxim
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Duplex	Half	Half	Half	Half
Drivers/Receivers	1/1	1/1	1/1	1/1
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Voltage - Supply	4.75V ~ 5.25V	3V ~ 3.6V	4.75V ~ 5.25V	3V ~ 5.5V
Receiver Hysteresis	70 mV	28 mV	20 mV	10 mV
Data Rate	Not specified	40 Mbps	250 kbps	42 Mbps
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For 5V Supply Designs with Industrial Temperature Range

The LT1785 series (LT1785ACS8#PBF, LT1785ACS8#TRPBF, LT1785AIS8#PBF, LT1785AIS8#TRPBF, LT1785IS8#PBF) provides direct voltage compatibility with the DS75176BTM while offering active product status and ROHS3 compliance. The LT1785AIS8 variants support the full -40°C to 85°C temperature range matching the original specification. These parts are available in both tube and tape & reel packaging options.

For Extended Supply Voltage and Temperature Range

The MAX14783EESA+ and MAX14783EESA+T variants support a wider supply range (3V ~ 5.5V) and extended operating temperature to 125°C, providing design flexibility for future applications. These parts maintain ROHS3 compliance and active product status with higher data rate capability (42 Mbps).

For 3V Supply Designs

The ISL3179EFBZ and ISL3179EFBZ-T from Renesas Electronics are suitable only for designs operating at 3V to 3.6V supply voltage. These parts are not compatible with the original 5V specification but offer active status and ROHS3 compliance for new low-voltage designs.

Compliance Considerations

All recommended substitutes are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete DS75176BTM. Selection should prioritize active product status parts to ensure long-term supply availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the ISL3179EFBZ replace the DS75176BTM in a 5V circuit?

A: No. The ISL3179EFBZ operates on 3V to 3.6V supply voltage and is not compatible with the DS75176BTM's 4.75V to 5.25V specification. Use LT1785 or MAX14783 series for 5V applications.

Q: What is the difference between tube and tape & reel packaging options?

A: Tube packaging (no suffix) is suitable for lower-volume applications and manual assembly. Tape & reel packaging (TR or #TRPBF suffix) is designed for automated pick-and-place assembly in high-volume production. Both provide identical electrical performance.

Q: Does the MAX14783EESA+ require design changes compared to the DS75176BTM?

A: No design changes are required. The MAX14783EESA+ maintains the same 8-SOIC package footprint, pinout, and RS422/RS485 protocol support. The wider supply voltage range (3V ~ 5.5V) provides additional operational flexibility without requiring circuit modifications.

Q: Why do substitute parts have lower receiver hysteresis values?

A: Lower receiver hysteresis (10-28 mV versus 70 mV) in modern parts indicates improved noise immunity and signal detection precision. This is a performance enhancement that maintains backward compatibility while providing superior noise rejection characteristics.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant, addressing environmental and regulatory requirements that the obsolete DS75176BTM does not meet.

Q: Which substitute offers the best temperature range coverage?

A: The ISL3179EFBZ and ISL3179EFBZ-T support -40°C to 125°C operating temperature, providing the widest range. However, this advantage applies only to designs operating within the 3V to 3.6V supply window.

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