Request Quote
(Ships tomorrow)
ISL8485ECB Equivalent & Substitute Parts
Part Overview
The ISL8485ECB is a half-duplex RS422/RS485 transceiver manufactured by Renesas Electronics Corporation in an 8-SOIC surface mount package. This part is classified as obsolete, with 3322 units available in new original stock. The ISL8485ECB operates at 10 Mbps data rate with a 4.5V to 5.5V supply voltage range and 0°C to 70°C operating temperature. Due to its obsolete status and non-RoHS compliance, identifying equivalent and substitute parts is essential for new designs and long-term supply chain planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | ISL8485ECB |
| Manufacturer | Renesas Electronics Corporation |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Receiver Hysteresis | 70 mV |
| Data Rate | 10 Mbps |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°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 of the ISL8485ECB is determined by the following critical parameters:
Electrical Compatibility:
- Protocol: RS422/RS485 half-duplex operation
- Number of Drivers/Receivers: 1/1 configuration
- Package: 8-SOIC form factor with identical pinout
- Supply voltage range overlap with 4.5V ~ 5.5V
- Data rate capability of 10 Mbps or higher
Mechanical Compatibility:
- Surface mount 8-SOIC package (0.154", 3.90mm Width)
- Pin-compatible footprint
Compliance Considerations:
- RoHS3 compliance preferred for new designs
- REACH unaffected status maintained across all substitutes
Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications with different packaging) and similar parts (compatible electrical operation with variations in hysteresis, data rate, or temperature range).
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Duplex | Receiver Hysteresis | Data Rate | Supply Voltage | Operating Temperature | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL8485ECB | Renesas | RS422, RS485 | 1/1 | Half | 70 mV | 10 Mbps | 4.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Obsolete | Non-compliant |
| ISL8485ECBZ | Renesas | RS422, RS485 | 1/1 | Half | 70 mV | 10 Mbps | 4.5V ~ 5.5V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| DS36277TMX/NOPB | Texas Instruments | RS422, RS485 | 1/1 | Half | 80 mV | — | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785ACS8#PBF | Analog Devices | RS422, RS485 | 1/1 | Half | 20 mV | 250 kbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785ACS8#TRPBF | Analog Devices | RS422, RS485 | 1/1 | Half | 20 mV | 250 kbps | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785AIS8#PBF | Analog Devices | RS422, RS485 | 1/1 | Half | 20 mV | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785AIS8#TRPBF | Analog Devices | RS422, RS485 | 1/1 | Half | 20 mV | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785IS8#PBF | Analog Devices | RS422, RS485 | 1/1 | Half | 20 mV | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785IS8#TRPBF | Analog Devices | RS422, RS485 | 1/1 | Half | 20 mV | 250 kbps | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| LTC2862MPS8-1#PBF | Analog Devices | RS422, RS485 | 1/1 | Half | 150 mV | 20 Mbps | 3V ~ 5.5V | -55°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| LTC2862MPS8-1#TRPBF | Analog Devices | RS422, RS485 | 1/1 | Half | 150 mV | 20 Mbps | 3V ~ 5.5V | -55°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Parametric Equivalent (Direct Replacement):
ISL8485ECBZ is the direct parametric equivalent to ISL8485ECB. Both parts share identical electrical specifications: 70 mV receiver hysteresis, 10 Mbps data rate, 4.5V to 5.5V supply voltage, and 0°C to 70°C operating temperature. The primary difference is product status and compliance: ISL8485ECBZ is active and ROHS3 compliant, making it the preferred choice for new designs and long-term availability.
Compatible Substitutes with Extended Temperature Range:
DS36277TMX/NOPB (Texas Instruments) and LT1785 variants (Analog Devices) are compatible substitutes with extended operating temperature ranges (-40°C to 85°C or -55°C to 125°C). These parts maintain RS422/RS485 half-duplex 1/1 transceiver functionality in 8-SOIC packages. DS36277TMX/NOPB operates at 4.75V to 5.25V with 80 mV hysteresis. LT1785 variants operate at 4.75V to 5.25V with 20 mV hysteresis and 250 kbps data rate. LTC2862MPS8-1 variants support wider supply voltage (3V to 5.5V), higher data rate (20 Mbps), and extended temperature range (-55°C to 125°C) with 150 mV hysteresis.
Compliance Status:
All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. The original ISL8485ECB is RoHS non-compliant and obsolete, necessitating substitution for new product development.
Frequently Asked Questions (FAQ)
Q: Can ISL8485ECBZ directly replace ISL8485ECB?
A: Yes. ISL8485ECBZ is the parametric equivalent with identical electrical specifications and 8-SOIC package. The only differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin configuration and functionality are identical.
Q: What are the key differences between ISL8485ECB and LT1785 variants?
A: The LT1785 series has lower receiver hysteresis (20 mV vs. 70 mV), lower data rate (250 kbps vs. 10 Mbps), and narrower supply voltage range (4.75V to 5.25V vs. 4.5V to 5.5V). However, LT1785 variants offer extended temperature ranges and ROHS3 compliance. Substitution is valid only if the application does not require 10 Mbps data rate and can operate within the narrower voltage and temperature specifications.
Q: Is LTC2862MPS8-1 suitable for ISL8485ECB replacement?
A: LTC2862MPS8-1 is compatible for applications requiring higher data rates (20 Mbps vs. 10 Mbps), wider supply voltage range (3V to 5.5V), and extended temperature range (-55°C to 125°C). The higher receiver hysteresis (150 mV vs. 70 mV) may affect noise immunity in some applications. Substitution is valid if the application can tolerate the increased hysteresis and does not require the original 70 mV specification.
Q: What packaging options are available for substitutes?
A: All substitute parts are available in 8-SOIC surface mount packages with identical footprints. Packaging variants include Tube, Cut Tape (CT) & Digi-Reel, and Tape & Reel (TR). Select packaging based on manufacturing volume and assembly requirements.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected. The original ISL8485ECB is RoHS non-compliant, making substitution necessary for compliance with modern regulatory standards.
Q: What is the supply voltage compatibility range across all parts?
A: ISL8485ECB and ISL8485ECBZ operate at 4.5V to 5.5V. DS36277TMX/NOPB and LT1785 variants operate at 4.75V to 5.25V. LTC2862MPS8-1 variants support the widest range at 3V to 5.5V. Verify supply voltage compatibility with your application before substitution.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts