MAX488ECPA Equivalent & Substitute Parts

Part Overview

The MAX488ECPA is a full-duplex RS422/RS485 transceiver manufactured by Analog Devices Inc./Maxim Integrated in an 8-DIP through-hole package. This part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production support. The MAX488ECPA operates within a 4.75V to 5.25V supply range with a 250kbps data rate and 70mV receiver hysteresis, making it suitable for industrial communication applications requiring reliable serial data transmission.

Key Parameters

Parameter	MAX488ECPA
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	250kbps
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MAX488ECPA is determined by strict equivalence across the following critical parameters:

Protocol support: RS422 and RS485
Duplex mode: Full-duplex operation
Driver/Receiver configuration: 1/1
Package type: 8-DIP through-hole
Receiver hysteresis: 70 mV
Supply voltage range: 4.75V ~ 5.25V
Operating temperature range: 0°C ~ 70°C
Data rate: 250kbps minimum

Substitute parts are grouped into two categories: parametric equivalents from the same manufacturer (MAX488 series variants) and manufacturer-recommended alternatives from Analog Devices and Texas Instruments that maintain full electrical and mechanical compatibility within the specified parameter ranges.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	Product Status	RoHS Status
MAX488ECPA	Analog Devices/Maxim	RS422, RS485	1/1	Full	70 mV	250kbps	4.75V ~ 5.25V	0°C ~ 70°C	8-DIP	Obsolete	RoHS non-compliant
MAX488CPA+	Analog Devices/Maxim	RS422, RS485	1/1	Full	70 mV	250kbps	4.75V ~ 5.25V	0°C ~ 70°C	8-DIP	Active	ROHS3 Compliant
MAX488ECPA+	Analog Devices/Maxim	RS422, RS485	1/1	Full	70 mV	250kbps	4.75V ~ 5.25V	0°C ~ 70°C	8-DIP	Active	ROHS3 Compliant
ADM488ANZ	Analog Devices	RS422, RS485	1/1	Full	70 mV	250kbps	4.5V ~ 5.5V	-40°C ~ 85°C	8-DIP	Active	ROHS3 Compliant
LTC490CN8#PBF	Analog Devices	RS422, RS485	1/1	Full	70 mV	Not specified	4.75V ~ 5.25V	0°C ~ 70°C	8-DIP	Active	ROHS3 Compliant
SN65LBC179AP	Texas Instruments	RS422, RS485	1/1	Full	50 mV	30Mbps	4.75V ~ 5.25V	-40°C ~ 85°C	8-DIP	Obsolete	ROHS3 Compliant
SN75LBC179AP	Texas Instruments	RS422, RS485	1/1	Full	50 mV	30Mbps	4.75V ~ 5.25V	0°C ~ 70°C	8-DIP	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring direct replacement of the MAX488ECPA with active product status and modern compliance:

MAX488CPA+ and MAX488ECPA+ are parametric equivalents with identical electrical specifications and ROHS3 compliance. Both are manufactured by Analog Devices/Maxim Integrated and maintain the same 8-DIP package footprint, supply voltage range, operating temperature, and receiver hysteresis. These parts are recommended as primary substitutes for new designs and production continuity.

ADM488ANZ is an Analog Devices alternative offering extended operating temperature range (-40°C to 85°C) and wider supply voltage tolerance (4.5V to 5.5V), providing enhanced performance margins for industrial environments. This part is suitable for applications requiring broader environmental specifications.

LTC490CN8#PBF is an Analog Devices LTC series transceiver maintaining electrical compatibility with identical receiver hysteresis and supply voltage specifications. This part is available in active production status with ROHS3 compliance.

SN65LBC179AP and SN75LBC179AP are Texas Instruments alternatives with identical protocol support and package configuration. Both parts are obsolete but remain available in inventory. The SN65LBC179AP offers extended operating temperature range (-40°C to 85°C), while SN75LBC179AP maintains the original 0°C to 70°C range. Both exhibit 50mV receiver hysteresis and 30Mbps data rate, providing enhanced performance specifications compared to the original MAX488ECPA.

Frequently Asked Questions (FAQ)

Q: Can MAX488CPA+ and MAX488ECPA+ be used interchangeably with MAX488ECPA?

A: Yes. Both parts maintain identical electrical parameters including receiver hysteresis, data rate, supply voltage range, and operating temperature. The primary difference is product status (active versus obsolete) and RoHS compliance. Both are packaged in 8-DIP through-hole configuration with identical pinout.

Q: What is the difference between ADM488ANZ and MAX488ECPA?

A: ADM488ANZ provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and wider supply voltage tolerance (4.5V to 5.5V versus 4.75V to 5.25V). Receiver hysteresis and data rate remain identical. The 8-DIP package footprint is compatible.

Q: Are the Texas Instruments SN65LBC179AP and SN75LBC179AP suitable replacements?

A: Both parts support RS422/RS485 protocols with full-duplex 1/1 driver/receiver configuration in 8-DIP packages. However, receiver hysteresis differs (50mV versus 70mV) and data rate is specified at 30Mbps versus 250kbps. These differences may affect circuit behavior in noise-sensitive applications. Both parts are obsolete.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: RoHS3 compliance indicates the part meets current environmental and hazardous substance restrictions. The original MAX488ECPA is RoHS non-compliant. For new designs and regulated applications, ROHS3-compliant alternatives (MAX488CPA+, MAX488ECPA+, ADM488ANZ, LTC490CN8#PBF) are recommended.

Q: Can I use LTC490CN8#PBF as a direct replacement?

A: LTC490CN8#PBF maintains identical receiver hysteresis (70mV), supply voltage range (4.75V to 5.25V), operating temperature (0°C to 70°C), and 8-DIP package configuration. Data rate is not specified for this part. Electrical compatibility is confirmed for the specified parameters.

Q: Are there any package or pinout differences between these substitutes?

A: All listed substitute parts use 8-DIP (0.300", 7.62mm) through-hole packages with identical mechanical footprints. Pinout compatibility is maintained across all substitutes, enabling direct board-level replacement without layout modifications.

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