MAX488EEPA+ Equivalent & Substitute Parts

Part Overview

The MAX488EEPA+ is a full-duplex RS422/RS485 transceiver manufactured by Analog Devices Inc./Maxim Integrated, supplied in an 8-pin DIP package for through-hole mounting. This interface IC operates at 250 kbps data rate with a 70 mV receiver hysteresis and is designed for industrial communication applications requiring robust noise immunity. The part is currently active in production. Substitute parts are necessary when the primary part is unavailable, when alternative supply sources are required, or when design flexibility across compatible product lines is needed while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX488EEPA+
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Receiver Hysteresis	70 mV
Data Rate	250 kbps
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
Supplier Device Package	8-PDIP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the MAX488EEPA+ is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

Protocol: RS422, RS485
Number of Drivers/Receivers: 1/1
Duplex: Full
Package / Case: 8-DIP (0.300", 7.62mm)
Supplier Device Package: 8-PDIP
Mounting Type: Through Hole
Receiver Hysteresis: 70 mV
Data Rate: 250 kbps
Voltage - Supply: 4.75V ~ 5.25V
Operating Temperature: -40°C ~ 85°C

Parts meeting all these parameters are classified as parametric equivalents. Parts from the same manufacturer with identical electrical specifications but different temperature or voltage ranges are classified as manufacturer-recommended alternatives. Parts from different manufacturers with matching functional parameters but variations in receiver hysteresis or data rate specifications are classified as cross-manufacturer alternatives and require application-level verification of compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Receiver Hysteresis	Data Rate	Voltage - Supply	Operating Temperature	Package	Product Status
MAX488EEPA+	Analog Devices Inc./Maxim Integrated	RS422, RS485	1/1	Full	70 mV	250 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-DIP	Active
MAX488EPA+	Analog Devices Inc./Maxim Integrated	RS422, RS485	1/1	Full	70 mV	250 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-DIP	Active
ADM488ANZ	Analog Devices Inc.	RS422, RS485	1/1	Full	70 mV	250 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	8-DIP	Active
LTC490IN8#PBF	Analog Devices Inc.	RS422, RS485	1/1	Full	70 mV	Not Specified	4.75V ~ 5.25V	-40°C ~ 85°C	8-DIP	Active
SN65LBC179AP	Texas Instruments	RS422, RS485	1/1	Full	50 mV	30 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-DIP	Obsolete
SN75LBC179AP	Texas Instruments	RS422, RS485	1/1	Full	50 mV	30 Mbps	4.75V ~ 5.25V	0°C ~ 70°C	8-DIP	Obsolete

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitution): MAX488EPA+ is a direct parametric equivalent to MAX488EEPA+, sharing identical electrical specifications, supply voltage range, operating temperature range, and package configuration. Both parts are active products from Analog Devices Inc./Maxim Integrated and carry ROHS3 compliance with MSL 1 rating.

Manufacturer-Recommended Alternatives: ADM488ANZ is an Analog Devices Inc. alternative with a wider supply voltage range (4.5V ~ 5.5V) compared to the MAX488EEPA+ (4.75V ~ 5.25V). This extended voltage tolerance provides additional design flexibility in applications with variable power supply conditions while maintaining identical receiver hysteresis, data rate, and operating temperature specifications. The part is active and ROHS3 compliant.

LTC490IN8#PBF is an Analog Devices Inc. product with matching receiver hysteresis and supply voltage specifications. The data rate specification is not provided in the available documentation. This part is active and ROHS3 compliant.

Cross-Manufacturer Alternatives: SN65LBC179AP and SN75LBC179AP are Texas Instruments products with functional RS422/RS485 transceiver capability in 8-DIP packages. Both parts have receiver hysteresis of 50 mV (compared to 70 mV in the MAX488EEPA+) and data rate of 30 Mbps (compared to 250 kbps in the MAX488EEPA+). Both parts are marked as obsolete. SN75LBC179AP has a reduced operating temperature range (0°C ~ 70°C) compared to the MAX488EEPA+ (-40°C ~ 85°C). These parts are suitable only for applications where the specified parameter differences do not impact system performance.

Compliance Status: All listed parts maintain ROHS3 compliance and REACH unaffected status. MSL ratings are consistent across Analog Devices products (MSL 1) and not applicable for obsolete Texas Instruments parts.

Frequently Asked Questions (FAQ)

Q: Can MAX488EPA+ be used as a direct replacement for MAX488EEPA+? A: Yes. MAX488EPA+ is a parametric equivalent with identical electrical specifications, supply voltage range (4.75V ~ 5.25V), operating temperature range (-40°C ~ 85°C), receiver hysteresis (70 mV), data rate (250 kbps), and 8-DIP package configuration.

Q: What is the difference between MAX488EEPA+ and ADM488ANZ? A: The primary difference is the supply voltage range. ADM488ANZ operates at 4.5V ~ 5.5V, providing a wider tolerance window compared to MAX488EEPA+ at 4.75V ~ 5.25V. All other electrical parameters, including receiver hysteresis, data rate, operating temperature, and package type, are identical.

Q: Are the Texas Instruments SN65LBC179AP and SN75LBC179AP suitable replacements? A: These parts share the same 8-DIP package and RS422/RS485 protocol support. However, they have different receiver hysteresis (50 mV vs. 70 mV) and higher data rate capability (30 Mbps vs. 250 kbps). SN75LBC179AP also has a narrower operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C). Both parts are obsolete. Substitution requires verification that application requirements are compatible with these parameter differences.

Q: What does the 8-DIP package designation mean? A: 8-DIP refers to an 8-pin Dual Inline Package with 0.300" (7.62mm) row spacing. This is a through-hole mounting package suitable for breadboard prototyping and conventional PCB assembly. All listed substitute parts use this identical package configuration, ensuring mechanical compatibility.

Q: Why are some substitute parts marked as obsolete? A: SN65LBC179AP and SN75LBC179AP from Texas Instruments are no longer in active production. While they may remain available from inventory, new designs should prioritize active products such as MAX488EEPA+, MAX488EPA+, ADM488ANZ, or LTC490IN8#PBF to ensure long-term supply chain stability.

Q: What is receiver hysteresis and why does it matter? A: Receiver hysteresis is the voltage difference between the rising and falling threshold levels of the input comparator. The MAX488EEPA+ has 70 mV hysteresis, which provides noise immunity in industrial environments. Texas Instruments alternatives have 50 mV hysteresis, which may be insufficient for applications with high electromagnetic interference.

Q: Can I use LTC490IN8#PBF if the data rate specification is not provided? A: LTC490IN8#PBF is functionally compatible with the MAX488EEPA+ for RS422/RS485 communication. The absence of a specified data rate in the available documentation does not indicate incompatibility. Application-level testing is recommended to confirm performance in your specific system.

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