ISL8487EIP RS422/RS485 Half-Duplex Transceiver Equivalent & Substitute Parts

Part Overview

The ISL8487EIP is a half-duplex RS422/RS485 transceiver manufactured by Renesas Electronics Corporation, housed in an 8-DIP package. This part is classified as obsolete, with 1,825 units currently in stock. The ISL8487EIP operates across a 4.5V to 5.5V supply range and supports data rates up to 250 kbps with a receiver hysteresis of 70 mV. Due to its obsolete status and non-RoHS compliance, equivalent and substitute parts with active product status and modern compliance certifications are necessary for new designs and long-term supply chain reliability.

Key Parameters

Parameter	ISL8487EIP Value
Type	Transceiver
Protocol	RS422, RS485
Duplex Configuration	Half
Number of Drivers/Receivers	1/1
Data Rate	250 kbps
Receiver Hysteresis	70 mV
Supply Voltage Range	4.5V – 5.5V
Operating Temperature Range	-40°C to 85°C
Package Type	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

Substitution of the ISL8487EIP is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS422/RS485 half-duplex
Driver/Receiver Configuration: 1/1
Package: 8-DIP (0.300", 7.62mm)
Mounting Type: Through Hole
Data Rate: 250 kbps minimum
Receiver Hysteresis: 70 mV
Supply Voltage: 4.5V – 5.5V compatible range

Substitute Categories:

Parametric Equivalent: ISL81487LIPZ (Renesas Electronics Corporation) — Identical electrical specifications with active product status and RoHS3 compliance. Direct pin-compatible replacement.

Similar Substitutes: MAX14780EEPA+, MAX487CPA+, MAX487ECPA+, MAX487EEPA+, MAX487EPA+ (Analog Devices Inc./Maxim Integrated) — Functionally equivalent with variations in operating temperature range, supply voltage tolerance, and compliance certifications. All maintain 8-DIP package, RS422/RS485 protocol, and half-duplex 1/1 configuration.

Parameter Comparison

Parameter	ISL8487EIP	ISL81487LIPZ	MAX14780EEPA+	MAX487CPA+	MAX487ECPA+	MAX487EEPA+	MAX487EPA+
Manufacturer	Renesas	Renesas	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim	Analog Devices/Maxim
Protocol	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485	RS422, RS485
Duplex	Half	Half	Half	Half	Half	Half	Half
Drivers/Receivers	1/1	1/1	1/1	1/1	1/1	1/1	1/1
Data Rate	250 kbps	250 kbps	500 kbps	250 kbps	250 kbps	250 kbps	250 kbps
Receiver Hysteresis	70 mV	70 mV	100 mV	70 mV	70 mV	70 mV	70 mV
Supply Voltage	4.5V – 5.5V	4.5V – 5.5V	4.5V – 5.5V	4.75V – 5.25V	4.75V – 5.25V	4.75V – 5.25V	4.75V – 5.25V
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	0°C to 70°C	0°C to 70°C	-40°C to 85°C	-40°C to 85°C
Package	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Active): ISL81487LIPZ is the primary recommendation. It maintains identical electrical specifications, supply voltage range, operating temperature range, and receiver hysteresis as the ISL8487EIP while offering active product status and RoHS3 compliance. This part is a parametric equivalent with no design modifications required.

For Extended Temperature Applications (-40°C to 85°C): MAX487EEPA+ and MAX487EPA+ support the full -40°C to 85°C operating range required by the original ISL8487EIP. Both are RoHS3 compliant and active products. Note that supply voltage tolerance is narrower (4.75V – 5.25V) compared to the original part.

For Restricted Temperature Applications (0°C to 70°C): MAX487CPA+ and MAX487ECPA+ are suitable for designs with limited temperature requirements. Both maintain 70 mV receiver hysteresis and 250 kbps data rate with RoHS3 compliance and active status.

For Enhanced Data Rate Capability: MAX14780EEPA+ supports 500 kbps data rate with 100 mV receiver hysteresis, providing higher performance margin while maintaining the -40°C to 85°C operating range and RoHS3 compliance.

All substitute parts are pin-compatible 8-DIP packages suitable for through-hole mounting on existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can ISL81487LIPZ directly replace ISL8487EIP without circuit modifications? A: Yes. ISL81487LIPZ is a parametric equivalent with identical electrical specifications, supply voltage range, operating temperature range, and package configuration. No design changes are required.

Q: What is the key difference between ISL81487LIPZ and MAX487 series substitutes? A: ISL81487LIPZ maintains the exact 4.5V – 5.5V supply voltage range of the original ISL8487EIP. MAX487 series parts operate within a narrower 4.75V – 5.25V range. Select ISL81487LIPZ if your design requires the full 4.5V – 5.5V tolerance.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts (ISL81487LIPZ, MAX14780EEPA+, MAX487CPA+, MAX487ECPA+, MAX487EEPA+, MAX487EPA+) are RoHS3 compliant, addressing the non-compliance status of the obsolete ISL8487EIP.

Q: Which substitute supports the widest operating temperature range? A: ISL81487LIPZ, MAX14780EEPA+, MAX487EEPA+, and MAX487EPA+ all support -40°C to 85°C. MAX487CPA+ and MAX487ECPA+ are limited to 0°C to 70°C.

Q: Can MAX14780EEPA+ be used in place of ISL8487EIP? A: MAX14780EEPA+ is functionally compatible with identical package, protocol, and duplex configuration. However, it features 100 mV receiver hysteresis (versus 70 mV) and supports 500 kbps data rate (versus 250 kbps). These differences represent enhanced performance margins and do not prevent substitution in applications designed for ISL8487EIP.

Q: What is the inventory status of substitute parts? A: ISL81487LIPZ: 6,300 units. MAX14780EEPA+: 1,020 units. MAX487CPA+: 2,940 units. MAX487ECPA+: 2,100 units. MAX487EEPA+: 5,100 units. MAX487EPA+: 3,800 units. All are new original stock.

Q: Are all substitute parts available in 8-DIP through-hole packages? A: Yes. All listed substitutes are packaged in 8-DIP (0.300", 7.62mm) with through-hole mounting type, ensuring PCB layout compatibility with the original ISL8487EIP.

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