MAX488EESA Equivalent & Substitute Parts

Part Overview

The MAX488EESA is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in 8-SOIC surface mount packaging. This part is classified as obsolete, with 14,962 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and new product development where active alternatives are preferred.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX488EESA
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	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the MAX488EESA is determined by strict equivalence across the following critical parameters:

Protocol compatibility: RS422/RS485
Configuration: 1/1 full-duplex transceiver
Package type: 8-SOIC surface mount
Supply voltage range: 4.75V ~ 5.25V
Operating temperature range: -40°C ~ 85°C
Receiver hysteresis: 70 mV
Data rate: 250 kbps

Substitute parts are grouped into two categories:

Parametric Equivalents maintain identical electrical and mechanical specifications, differing only in product status (active vs. obsolete) and packaging format (tube vs. reel).

Manufacturer Recommended Alternatives are active production parts from Analog Devices that share the same package, protocol, supply voltage, and temperature range but feature enhanced performance specifications (higher data rates and improved receiver hysteresis) while maintaining full backward compatibility at the 250 kbps operating point.

Parameter Comparison

Part Number	Manufacturer	Product Status	Protocol	Drivers/Receivers	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	RoHS Status
MAX488EESA	Analog Devices/Maxim	Obsolete	RS422, RS485	1/1	70 mV	250 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	Non-compliant
MAX488EESA+	Analog Devices/Maxim	Active	RS422, RS485	1/1	70 mV	250 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
MAX488ESA+	Analog Devices/Maxim	Active	RS422, RS485	1/1	70 mV	250 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM488ARZ-REEL	Analog Devices	Active	RS422, RS485	1/1	70 mV	250 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM488ARZ-REEL7	Analog Devices	Active	RS422, RS485	1/1	70 mV	250 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM4854ARZ	Analog Devices	Active	RS422, RS485	1/1	20 mV	115 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM4855ARZ	Analog Devices	Active	RS422, RS485	1/1	20 mV	500 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM4856ARZ	Analog Devices	Active	RS422, RS485	1/1	20 mV	2.5 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM4856ARZ-REEL7	Analog Devices	Active	RS422, RS485	1/1	20 mV	2.5 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM4857ARZ	Analog Devices	Active	RS422, RS485	1/1	20 mV	10 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant
ADM4857ARZ-REEL7	Analog Devices	Active	RS422, RS485	1/1	20 mV	10 Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended for Immediate Replacement)

MAX488EESA+ and MAX488ESA+ are direct parametric equivalents with identical electrical specifications. Both are active production parts with ROHS3 compliance, addressing the obsolescence and regulatory compliance limitations of the original MAX488EESA. MAX488ESA+ offers significantly higher inventory availability (295,400 units) compared to MAX488EESA+ (2,126 units), making it the preferred choice for volume applications.

Pin-Compatible Active Alternatives with Enhanced Performance

ADM488ARZ-REEL and ADM488ARZ-REEL7 maintain the 70 mV receiver hysteresis and 250 kbps data rate of the MAX488EESA while offering a slightly wider supply voltage range (4.5V ~ 5.5V vs. 4.75V ~ 5.25V). Both are active production parts with ROHS3 compliance and available in cut tape/reel packaging formats.

Higher-Performance Alternatives for Future Designs

The ADM4854ARZ, ADM4855ARZ, ADM4856ARZ, and ADM4857ARZ series provide enhanced data rate capabilities (115 kbps to 10 Mbps) with improved receiver hysteresis (20 mV) while maintaining the same 8-SOIC package, supply voltage range, and temperature specifications. These parts are suitable for applications requiring higher bandwidth or improved noise immunity. All are active production parts with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can MAX488EESA+ or MAX488ESA+ be used as direct replacements for MAX488EESA?

A: Yes. MAX488EESA+ and MAX488ESA+ are parametric equivalents with identical electrical and mechanical specifications. The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Both are pin-compatible and functionally interchangeable at the circuit level.

Q: What is the difference between MAX488EESA+ and MAX488ESA+?

A: Both parts are parametric equivalents with identical specifications. The difference is inventory availability: MAX488ESA+ has 295,400 units in stock compared to 2,126 units for MAX488EESA+. For volume production, MAX488ESA+ is the preferred choice due to superior supply availability.

Q: Can ADM488ARZ-REEL or ADM488ARZ-REEL7 replace MAX488EESA?

A: Yes. Both ADM488ARZ variants are pin-compatible and electrically equivalent, with the same 70 mV receiver hysteresis and 250 kbps data rate. The supply voltage range is slightly wider (4.5V ~ 5.5V vs. 4.75V ~ 5.25V), providing additional design margin. Both are active production parts with ROHS3 compliance.

Q: What is the difference between ADM488ARZ-REEL and ADM488ARZ-REEL7?

A: Both parts are electrically identical. The difference is packaging format: ADM488ARZ-REEL uses standard cut tape and reel packaging, while ADM488ARZ-REEL7 uses Digi-Reel® packaging. Selection depends on your assembly equipment compatibility and tape specifications.

Q: Can I use ADM4854ARZ, ADM4855ARZ, ADM4856ARZ, or ADM4857ARZ as replacements?

A: These parts are pin-compatible and share the same 8-SOIC package, supply voltage, and temperature range. However, they feature different receiver hysteresis (20 mV vs. 70 mV) and higher data rates (115 kbps to 10 Mbps vs. 250 kbps). They are suitable for new designs requiring higher bandwidth or improved noise immunity, but circuit validation is required if your application depends on the 70 mV hysteresis specification.

Q: Why does the MAX488EESA have different receiver hysteresis than the ADM485x series?

A: The MAX488EESA is specified with 70 mV receiver hysteresis, while the ADM4854ARZ through ADM4857ARZ series feature 20 mV hysteresis. This difference reflects design optimization for different application requirements. The 20 mV hysteresis in the ADM485x series provides improved noise immunity and faster signal transitions, suitable for higher data rate applications.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant. The original MAX488EESA is RoHS non-compliant. If RoHS compliance is a design requirement, any of the listed substitutes will satisfy regulatory requirements.

Q: What packaging options are available for MAX488 equivalents?

A: MAX488EESA+ and MAX488ESA+ are supplied in tube packaging. ADM488ARZ-REEL and ADM488ARZ-REEL7 are supplied in cut tape and Digi-Reel® formats. The ADM485x series (ADM4854ARZ through ADM4857ARZ) are supplied in tube packaging, with ADM4856ARZ-REEL7 and ADM4857ARZ-REEL7 available in cut tape/reel formats. Selection depends on your assembly process requirements.

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