MAX483EPA Equivalent & Substitute Parts

Part Overview

The MAX483EPA is a half-duplex RS422/RS485 transceiver interface IC manufactured by Analog Devices Inc./Maxim Integrated in an 8-DIP package. This part is classified as obsolete, though 14,745 units remain in stock as new original inventory. The MAX483EPA operates at 250 kbps data rate with a 4.75V to 5.25V supply voltage range and supports industrial temperature operation from -40°C to 85°C. Due to its obsolete status and non-RoHS3 compliance, identifying active equivalent and substitute parts is essential for new designs and long-term supply chain continuity.

Key Parameters

Parameter	MAX483EPA
Type	Transceiver Half Duplex
Protocol	RS422, RS485
Number of Drivers/Receivers	1/1
Data Rate	250 kbps
Receiver Hysteresis	70 mV
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	RoHS non-compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MAX483EPA is determined by strict parameter matching across the following critical criteria:

Primary Substitution Parameters:

Protocol: RS422/RS485 half-duplex operation
Number of Drivers/Receivers: 1/1 configuration
Data Rate: 250 kbps minimum
Receiver Hysteresis: 70 mV
Voltage Supply Range: 4.75V ~ 5.25V
Package: 8-DIP (0.300", 7.62mm)
Mounting Type: Through Hole
Operating Temperature: -40°C ~ 85°C

Substitute parts are grouped into two categories:

Parametric Equivalents (MAX483EEPA+, MAX483EPA+, MAX487EEPA+, MAX487EPA+, SN65LBC182P, SN65LBC184P): These parts match all critical electrical and mechanical parameters of the MAX483EPA. They maintain identical protocol support, data rate, hysteresis, supply voltage, temperature range, and package specifications. These parts are suitable for direct replacement in existing designs.

Manufacturer Recommended Substitute (SN65HVD3082EP): This Texas Instruments part maintains protocol, duplex configuration, package, and temperature range compatibility. However, it operates at 200 kbps data rate (lower than 250 kbps) and features 30 mV receiver hysteresis (lower than 70 mV). The supply voltage range is 4.5V ~ 5.5V, which encompasses the MAX483EPA range. This part is recommended by the manufacturer but requires verification of application-specific data rate and hysteresis requirements.

Parameter Comparison

Parameter	MAX483EPA	MAX483EEPA+	MAX483EPA+	MAX487EEPA+	MAX487EPA+	SN65HVD3082EP	SN65LBC182P	SN65LBC184P
Manufacturer	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Texas Instruments	Texas Instruments	Texas Instruments
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Drivers/Receivers	1/1	1/1	1/1	1/1	1/1	1/1	1/1	1/1
Duplex	Half	Half	Half	Half	Half	Half	Half	Half
Data Rate	250 kbps	250 kbps	250 kbps	250 kbps	250 kbps	200 kbps	250 kbps	250 kbps
Receiver Hysteresis	70 mV	70 mV	70 mV	70 mV	70 mV	30 mV	70 mV	70 mV
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.5V ~ 5.5V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	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)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	14,745	4,500	6,020	5,100	3,800	10,300	10,400	3,700

Engineering Selection Recommendations

For new designs and applications requiring RS422/RS485 half-duplex transceiver functionality, the following selection criteria apply:

Preferred Substitutes (Full Parameter Match): MAX483EEPA+, MAX483EPA+, MAX487EEPA+, MAX487EPA+, SN65LBC182P, and SN65LBC184P are direct parametric equivalents to the MAX483EPA. All six parts maintain identical electrical specifications including 250 kbps data rate, 70 mV receiver hysteresis, 4.75V to 5.25V supply voltage, and -40°C to 85°C operating temperature. All substitute parts carry active product status and ROHS3 compliance, addressing the obsolescence and regulatory limitations of the original MAX483EPA. Selection among these six parts may be based on manufacturer preference, inventory availability, or packaging requirements (all are supplied in tube packaging).

Alternative Substitute (Parameter Deviation): SN65HVD3082EP from Texas Instruments is manufacturer-recommended but operates at 200 kbps data rate and features 30 mV receiver hysteresis, both lower than the MAX483EPA specification. The supply voltage range of 4.5V to 5.5V provides broader tolerance than the original part. This part is suitable only for applications where the lower data rate and hysteresis do not impact system performance. SN65HVD3082EP offers the highest inventory availability at 10,300 units.

All substitute parts maintain through-hole 8-DIP package compatibility and industrial temperature range operation, ensuring mechanical and thermal interchangeability with the MAX483EPA.

Frequently Asked Questions (FAQ)

Q: Can MAX483EEPA+ or MAX483EPA+ be used as direct replacements for MAX483EPA in existing designs?

A: Yes. MAX483EEPA+ and MAX483EPA+ are parametric equivalents with identical electrical and mechanical specifications. Both maintain 250 kbps data rate, 70 mV receiver hysteresis, 4.75V to 5.25V supply voltage, and 8-DIP through-hole package. The primary differences are active product status and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between MAX487EEPA+ and MAX483EPA+?

A: Both parts are parametric equivalents to MAX483EPA with identical electrical specifications. The difference lies in the base product number: MAX487 versus MAX483. Both maintain 1/1 driver/receiver configuration, 250 kbps data rate, 70 mV hysteresis, and identical package specifications. Selection between them may be based on manufacturer inventory or design documentation requirements.

Q: Why does SN65HVD3082EP have lower data rate and hysteresis specifications?

A: SN65HVD3082EP is a Texas Instruments alternative that operates at 200 kbps data rate with 30 mV receiver hysteresis, compared to the MAX483EPA's 250 kbps and 70 mV. This part is manufacturer-recommended but suitable only for applications where these lower specifications do not impact system requirements. The broader supply voltage range (4.5V to 5.5V) may provide additional design flexibility in some applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (MAX483EEPA+, MAX483EPA+, MAX487EEPA+, MAX487EPA+, SN65LBC182P, and SN65LBC184P) carry ROHS3 compliance certification. The original MAX483EPA is RoHS non-compliant. This compliance upgrade is a key advantage of substitution for new designs subject to RoHS regulations.

Q: Do all substitute parts use the same 8-DIP through-hole package?

A: Yes. All substitute parts maintain the 8-DIP (0.300", 7.62mm) through-hole package specification, ensuring direct mechanical compatibility with existing PCB layouts designed for MAX483EPA. No board redesign is required for package accommodation.

Q: Which substitute part has the highest inventory availability?

A: SN65HVD3082EP and SN65LBC182P both offer high inventory levels at 10,300 and 10,400 units respectively. Among Analog Devices/Maxim parts, MAX483EPA+ provides the highest availability at 6,020 units.

Q: Can SN65LBC182P and SN65LBC184P be used interchangeably with MAX483EPA?

A: Yes. Both Texas Instruments parts are parametric equivalents with identical electrical specifications to MAX483EPA: 250 kbps data rate, 70 mV receiver hysteresis, 4.75V to 5.25V supply voltage, and 8-DIP through-hole package. Selection between them may be based on inventory or design documentation preferences.

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