MAX1482CSD Equivalent & Substitute Parts

Part Overview

The MAX1482CSD is a 1/1 full-duplex RS422/RS485 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated in a 14-SOIC surface mount package. This part is classified as obsolete, with 2114 units currently in stock. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for new designs and long-term supply chain planning. Substitute parts must maintain compatibility across electrical specifications, protocol support, and physical packaging to ensure direct replacement capability.

Substiute Parts

MAX1482CSD

Analog Devices Inc./Maxim IntegratedIn Stock: 2127MAX1482CSD Datasheet

Current PartRFQ

MAX1482CSD+

Analog Devices Inc./Maxim IntegratedIn Stock: 2876MAX1482CSD+ Datasheet

Parametric EquivalentRFQ

LT1791CS#PBF

Analog Devices Inc.In Stock: 1167LT1791CS#PBF Datasheet

MFR RecommendedRFQ

LT1791CS#TRPBF

Analog Devices Inc.In Stock: 1469LT1791CS#TRPBF Datasheet

MFR RecommendedRFQ

LTC1687CS#PBF

Analog Devices Inc.In Stock: 2543LTC1687CS#PBF Datasheet

MFR RecommendedRFQ

LTC1687CS#TRPBF

Analog Devices Inc.In Stock: 1522LTC1687CS#TRPBF Datasheet

MFR RecommendedRFQ

LTC491CS#PBF

Analog Devices Inc.In Stock: 1213LTC491CS#PBF Datasheet

MFR RecommendedRFQ

LTC491CS#TRPBF

Analog Devices Inc.In Stock: 2078LTC491CS#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1482CSD is determined by the following critical parameters:

• Protocol Compatibility: All substitutes must support RS422 and RS485 protocols
• Configuration: 1/1 driver/receiver topology with full-duplex operation
• Supply Voltage: 4.75V ~ 5.25V operating range
• Operating Temperature: 0°C ~ 70°C range
• Package Type: 14-SOIC surface mount package
• Receiver Hysteresis: Acceptable range 20 mV to 75 mV (lower hysteresis provides improved noise immunity)
• Data Rate: Minimum 250 kbps capability

Substitute parts are grouped into two categories:

Category 1 - Parametric Equivalent (Identical Specifications)

• MAX1482CSD+ (same base part, active status, improved RoHS compliance)

Category 2 - Functional Equivalents (Enhanced or Comparable Specifications)

• LT1791CS#PBF and LT1791CS#TRPBF (20 mV hysteresis, active status)
• LTC1687CS#PBF and LTC1687CS#TRPBF (25 mV hysteresis, 52 Mbps data rate, active status)
• LTC491CS#PBF and LTC491CS#TRPBF (70 mV hysteresis, active status)

All substitutes maintain the 14-SOIC package footprint and support the required voltage and temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

MAX1482CSD+ is the primary substitute, offering identical electrical and mechanical specifications with the advantage of active product status and ROHS3 compliance. This part is suitable for applications requiring no design modification.

For New Designs and Long-Term Supply

All listed substitutes are active products with ROHS3 compliance, making them suitable for new designs. Selection depends on application requirements:

• LT1791CS series: Recommended for applications requiring improved receiver hysteresis (20 mV) and active product status. Available in both tube and tape & reel packaging.

• LTC1687CS series: Recommended for applications requiring higher data rate capability (52 Mbps) with improved receiver hysteresis (25 mV). Provides performance headroom for future upgrades. Available in both tube and tape & reel packaging.

• LTC491CS series: Recommended for applications with receiver hysteresis requirements near 70 mV. Available in both tube and tape & reel packaging.

All substitutes maintain compatibility with existing 14-SOIC PCB layouts and do not require circuit modifications.

Frequently Asked Questions (FAQ)

Q: Can MAX1482CSD+ be used as a direct replacement for MAX1482CSD?

A: Yes. MAX1482CSD+ maintains identical electrical specifications (75 mV receiver hysteresis, 250 kbps data rate, 1/1 configuration, full-duplex RS422/RS485 operation) and physical package (14-SOIC). The primary differences are active product status and ROHS3 compliance. No design changes are required.

Q: What is the difference between receiver hysteresis values in the substitute parts?

A: Receiver hysteresis determines the voltage difference between the rising and falling threshold levels. Lower hysteresis (20 mV in LT1791 series, 25 mV in LTC1687 series) provides improved noise immunity and faster response to signal transitions. The MAX1482CSD and LTC491CS series specify 75 mV and 70 mV respectively, suitable for applications with adequate signal margins.

Q: Why do some substitutes have higher data rates than the MAX1482CSD?

A: The LTC1687CS series supports 52 Mbps data rate compared to the MAX1482CSD's 250 kbps specification. This enhanced capability is backward compatible and does not require design changes. Applications operating at 250 kbps will function identically with LTC1687CS parts.

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

A: Tube packaging (CS#PBF suffix) is suitable for lower-volume applications and manual assembly. Tape & Reel packaging (CS#TRPBF suffix) is optimized for high-volume automated assembly. Both packaging options contain identical die and electrical specifications. Selection depends on manufacturing process requirements.

Q: Are all substitute parts compatible with the existing PCB layout?

A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) package, maintaining identical pin count, spacing, and footprint. No PCB modifications are required for substitution.

Q: Which substitute should be selected for new product designs?

A: For new designs, any active substitute with ROHS3 compliance is acceptable. MAX1482CSD+ provides identical specifications. LTC1687CS series offers enhanced data rate capability. LT1791CS series provides improved receiver hysteresis. Selection should be based on application performance requirements and supply chain availability.