SN75176APG4 Equivalent & Substitute Parts

Part Overview

The SN75176APG4 is a half-duplex RS422/RS485 transceiver IC manufactured by Texas Instruments in an 8-DIP through-hole package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The device provides single driver and receiver functionality for industrial communication protocols, with a 50 mV receiver hysteresis specification and 4.75V to 5.25V supply voltage range.

Key Parameters

Parameter	SN75176APG4
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Half
Receiver Hysteresis	50 mV
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution eligibility for the SN75176APG4 is determined by the following critical parameters:

Mandatory Matching Parameters:

Protocol: RS422/RS485
Number of Drivers/Receivers: 1/1 configuration
Duplex: Half-duplex operation
Supply Voltage Range: Must encompass or match 4.75V ~ 5.25V
Package Type: 8-DIP through-hole for direct socket compatibility
RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

Receiver Hysteresis: 20 mV to 70 mV (functional tolerance within RS422/RS485 specifications)
Data Rate: Variations acceptable if application requirements are met
Operating Temperature: Extended ranges acceptable for general substitution
Mounting Type: Through-hole only for this application context

Substitute parts are grouped by package compatibility and electrical parameter alignment. All listed substitutes maintain the 8-DIP through-hole form factor and RS422/RS485 protocol compliance required for direct replacement.

Parameter Comparison

Parameter	SN75176APG4	SN75176ADR	ISL81487EIPZ	LT1785AIN8#PBF	LT1785IN8#PBF	MAX485CPA+	MAX485EPA+
Manufacturer	Texas Instruments	Texas Instruments	Renesas Electronics	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc./Maxim	Analog Devices Inc./Maxim
Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Number of Drivers/Receivers	1/1	1/1	1/1	1/1	1/1	1/1	1/1
Duplex	Half	Half	Half	Half	Half	Half	Half
Receiver Hysteresis	50 mV	50 mV	70 mV	20 mV	20 mV	70 mV	70 mV
Data Rate	—	—	5 Mbps	250 kbps	250 kbps	2.5 Mbps	2.5 Mbps
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.5V ~ 5.5V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)	8-SOIC (0.154", 3.90mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Socket Replacement (8-DIP Through-Hole):

ISL81487EIPZ, LT1785AIN8#PBF, LT1785IN8#PBF, MAX485CPA+, and MAX485EPA+ are all qualified as direct socket replacements for the SN75176APG4. These parts maintain the 8-DIP through-hole package format and meet all mandatory electrical parameters for RS422/RS485 half-duplex transceiver operation.

Surface Mount Alternative:

SN75176ADR is the manufacturer-recommended equivalent from Texas Instruments but requires PCB redesign due to its 8-SOIC surface-mount package. This option is suitable only for new designs or boards with existing surface-mount footprints.

Product Status Consideration:

All substitute parts listed carry Active product status with established supply chains. The SN75176APG4's discontinued status at DiGi Electronics necessitates transition to one of these active alternatives for ongoing procurement.

Compliance Alignment:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the original part's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can I use SN75176ADR as a direct replacement for SN75176APG4?

A: SN75176ADR is electrically equivalent but requires PCB modification. It uses an 8-SOIC surface-mount package instead of the 8-DIP through-hole package of the SN75176APG4. Direct socket substitution is not possible without board redesign.

Q: What is the difference between the LT1785 variants (LT1785AIN8#PBF and LT1785IN8#PBF)?

A: Both LT1785 variants are functionally equivalent for RS422/RS485 transceiver applications. They share identical electrical specifications, including 20 mV receiver hysteresis, 250 kbps data rate, and 4.75V to 5.25V supply voltage. The primary difference is operating temperature range, with LT1785IN8#PBF supporting -40°C to 85°C versus the standard industrial range.

Q: How do the MAX485 variants compare to the original SN75176APG4?

A: MAX485CPA+ and MAX485EPA+ both provide RS422/RS485 half-duplex transceiver functionality in 8-DIP through-hole packages. Both feature 70 mV receiver hysteresis and 2.5 Mbps data rate. MAX485EPA+ supports extended operating temperature (-40°C to 85°C) compared to MAX485CPA+ (0°C to 70°C), matching the original part's temperature range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, maintaining regulatory alignment with the original SN75176APG4.

Q: Which substitute offers the best inventory availability?

A: MAX485EPA+ has the highest inventory level at 23,407 pieces in stock, followed by SN75176ADR at 35,100 pieces. Both represent stable supply options for production requirements.

Q: Can I use ISL81487EIPZ in applications requiring the original operating temperature range?

A: ISL81487EIPZ supports -40°C to 85°C operating temperature, which exceeds the original SN75176APG4 specification of 0°C to 70°C. It is suitable for applications within the original temperature range and for designs requiring extended temperature performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message