MAX3071EASA Equivalent & Substitute Parts

Part Overview

The MAX3071EASA is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in an 8-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and ongoing production requirements. The MAX3071EASA operates at 3V to 3.6V supply voltage with a 250kbps data rate and supports operating temperatures from -40°C to 125°C. Due to its obsolete status and non-RoHS3 compliance, direct replacements with active, compliant alternatives are essential for design continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX3071EASA
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Duplex	Full
Package / Case	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply	3V ~ 3.6V
Data Rate	250kbps
Operating Temperature	-40°C ~ 125°C
Receiver Hysteresis	100 mV
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MAX3071EASA is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Protocol: RS422/RS485 full-duplex transceiver
Number of Drivers/Receivers: 1/1 configuration
Package: 8-SOIC form factor (0.154", 3.90mm Width)
Supply Voltage Range: 3V to 3.6V
Data Rate: 250kbps minimum
Receiver Hysteresis: 100 mV
Operating Temperature: -40°C to 125°C
Mounting Type: Surface Mount

Grouping Logic:

Group 1 - Direct Parametric Equivalents (Identical Electrical Specifications): Parts matching all primary criteria with identical operating temperature range (-40°C to 125°C) and supply voltage (3V to 3.6V):

MAX3071EASA+ (active, RoHS3 compliant, tube packaging)
ADM3074EYRZ (500kbps data rate, extended capability)
ADM3074EYRZ-REEL7 (500kbps data rate, extended capability)
ADM3077EYRZ (16Mbps data rate, extended capability)
ADM3077EYRZ-REEL7 (16Mbps data rate, extended capability)

Group 2 - Functional Equivalents with Temperature Derating: Parts meeting core electrical specifications but with reduced operating temperature range (-40°C to 85°C):

ADM3071EARZ (250kbps, matches original data rate)
ADM3071EARZ-REEL7 (250kbps, matches original data rate)
ISL83071EIBZA (250kbps, 15 mV hysteresis)
ISL83071EIBZA-T (250kbps, 15 mV hysteresis)

Group 3 - Supply Voltage Variant: Parts with different supply voltage requirements (4.5V to 5.5V):

DS8921ATM/NOPB (Texas Instruments, 4.5V to 5.5V supply, 70 mV hysteresis)

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Package	Product Status	RoHS Status
MAX3071EASA	Analog Devices/Maxim	RS422/RS485	1/1	250kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	Obsolete	Non-compliant
MAX3071EASA+	Analog Devices/Maxim	RS422/RS485	1/1	250kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ADM3071EARZ	Analog Devices	RS422/RS485	1/1	250kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ADM3071EARZ-REEL7	Analog Devices	RS422/RS485	1/1	250kbps	3V ~ 3.6V	-40°C ~ 85°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ADM3074EYRZ	Analog Devices	RS422/RS485	1/1	500kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ADM3074EYRZ-REEL7	Analog Devices	RS422/RS485	1/1	500kbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ADM3077EYRZ	Analog Devices	RS422/RS485	1/1	16Mbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ADM3077EYRZ-REEL7	Analog Devices	RS422/RS485	1/1	16Mbps	3V ~ 3.6V	-40°C ~ 125°C	100 mV	8-SOIC	Active	RoHS3 Compliant
ISL83071EIBZA	Renesas Electronics	RS422/RS485	1/1	250kbps	3V ~ 3.6V	-40°C ~ 85°C	15 mV	8-SOIC	Active	RoHS3 Compliant
ISL83071EIBZA-T	Renesas Electronics	RS422/RS485	1/1	250kbps	3V ~ 3.6V	-40°C ~ 85°C	15 mV	8-SOIC	Active	RoHS3 Compliant
DS8921ATM/NOPB	Texas Instruments	RS422/RS485	1/1	Not specified	4.5V ~ 5.5V	-40°C ~ 85°C	70 mV	8-SOIC	Active	RoHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

MAX3071EASA+ is the primary recommended substitute. It maintains identical electrical specifications (250kbps data rate, 3V to 3.6V supply, -40°C to 125°C operating range, 100 mV hysteresis) while offering active product status and RoHS3 compliance. This part is available in tube packaging with 1980 units in stock.

For Extended Performance Requirements:

ADM3077EYRZ and ADM3077EYRZ-REEL7 provide 16Mbps data rate capability while maintaining the full -40°C to 125°C operating temperature range and 3V to 3.6V supply voltage. These parts are suitable for applications requiring higher bandwidth than the original 250kbps specification. Both are RoHS3 compliant and actively produced.

ADM3074EYRZ and ADM3074EYRZ-REEL7 offer 500kbps data rate as an intermediate performance option, also maintaining full temperature range and supply voltage compatibility.

For Temperature-Constrained Applications:

ADM3071EARZ and ADM3071EARZ-REEL7 provide exact electrical equivalence to the original part (250kbps, 100 mV hysteresis) with reduced operating temperature range (-40°C to 85°C). These are suitable for applications not requiring the full 125°C upper temperature limit.

ISL83071EIBZA and ISL83071EIBZA-T (Renesas) offer 250kbps operation with tighter receiver hysteresis (15 mV versus 100 mV) and reduced operating temperature range (-40°C to 85°C). Moisture sensitivity level is 3 (168 hours) compared to level 1 for Analog Devices parts.

For 5V Supply Systems:

DS8921ATM/NOPB (Texas Instruments) is the only substitute requiring 4.5V to 5.5V supply voltage. This part is suitable only for systems with 5V power rails and cannot be used in 3.3V systems. Operating temperature range is -40°C to 85°C with 70 mV receiver hysteresis.

All recommended substitutes maintain the 8-SOIC package form factor and are RoHS3 compliant with REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can MAX3071EASA+ be used as a direct drop-in replacement?

A: Yes. MAX3071EASA+ is electrically and mechanically identical to MAX3071EASA, maintaining 250kbps data rate, 100 mV receiver hysteresis, 3V to 3.6V supply voltage, and -40°C to 125°C operating temperature. The primary differences are active product status and RoHS3 compliance. Packaging is tube format.

Q: What is the difference between ADM3071EARZ and ADM3074EYRZ?

A: ADM3071EARZ operates at 250kbps (matching the original MAX3071EASA specification), while ADM3074EYRZ operates at 500kbps. Both maintain 3V to 3.6V supply voltage and 100 mV receiver hysteresis. ADM3074EYRZ supports the full -40°C to 125°C temperature range, while ADM3071EARZ is rated to -40°C to 85°C.

Q: Can I use ADM3077EYRZ in place of MAX3071EASA?

A: Yes, with design considerations. ADM3077EYRZ provides 16Mbps data rate (significantly higher than the original 250kbps), maintains 3V to 3.6V supply voltage, 100 mV receiver hysteresis, and full -40°C to 125°C operating temperature range. The higher data rate provides backward compatibility for lower-speed applications. All other electrical and mechanical parameters are equivalent.

Q: What is the impact of different receiver hysteresis values?

A: Receiver hysteresis affects noise immunity and switching threshold behavior. The original MAX3071EASA specifies 100 mV hysteresis. ISL83071EIBZA and ISL83071EIBZA-T provide tighter 15 mV hysteresis, which may require careful signal integrity analysis in noisy environments. DS8921ATM/NOPB provides 70 mV hysteresis. Selection depends on application noise characteristics and signal quality.

Q: Why does DS8921ATM/NOPB require 4.5V to 5.5V supply?

A: DS8921ATM/NOPB is a Texas Instruments design optimized for 5V systems and cannot operate at 3V to 3.6V supply voltage. This part is suitable only for applications with 5V power rails. It is not a substitute for 3.3V systems.

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

A: Tube packaging (standard) is suitable for manual handling and lower-volume applications. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging are designed for automated pick-and-place assembly and high-volume production. Electrical specifications are identical; packaging choice depends on assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts are RoHS3 compliant. The original MAX3071EASA is RoHS non-compliant, making compliance upgrade a key benefit of substitution.

Q: What is the moisture sensitivity level (MSL) difference?

A: Most Analog Devices parts (MAX3071EASA+, ADM3071EARZ, ADM3074EYRZ, ADM3077EYRZ) are MSL 1 (Unlimited), meaning no moisture sensitivity restrictions. ISL83071EIBZA and ISL83071EIBZA-T are MSL 3 (168 hours), requiring controlled storage and handling within 168 hours of package opening. MSL 1 parts offer greater flexibility in storage and handling.

Q: Can I substitute based on data rate alone?

A: No. Data rate is one parameter among many. Substitution requires matching protocol (RS422/RS485), driver/receiver configuration (1/1), package (8-SOIC), supply voltage range (3V to 3.6V for most applications), and operating temperature requirements. Higher data rate parts are backward compatible with lower-speed applications, but lower data rate parts cannot replace higher-speed requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message