PI90SD1636CFCEX Equivalent & Substitute Parts

Part Overview

The PI90SD1636CFCEX is a 9/9 transceiver half interface IC manufactured by Diodes Incorporated, designed for IEEE 802.3 applications in a 64-LQFP surface mount package. This component operates at 1.25Gbps data rate with a supply voltage range of 3.15V to 3.45V and supports operating temperatures from 0°C to 150°C. The product is currently obsolete, making identification of compatible substitute parts essential for system redesign, legacy support, or inventory replacement scenarios.

Substiute Parts

PI90SD1636CFCEX

Diodes IncorporatedIn Stock: 1260PI90SD1636CFCEX Datasheet

Current PartRFQ

DS92LV090ATVEH/NOPB

Texas InstrumentsIn Stock: 1968DS92LV090ATVEH/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI90SD1636CFCEX is determined by the following critical parameters:

• Driver/Receiver Configuration: 9/9 half-duplex transceiver architecture
• Package Compatibility: 64-pin LQFP/TQFP surface mount form factor (10x10mm)
• Supply Voltage Range: Overlap or compatibility with 3.15V ~ 3.45V requirement
• Protocol Support: IEEE 802.3 or LVDS interface standards
• Data Rate Capability: Minimum 1.25Gbps performance
• Compliance: ROHS3 compliance and surface mount suitability

The DS92LV090ATVEH/NOPB from Texas Instruments meets the core architectural requirements (9/9 half-duplex transceiver in 64-TQFP package) and maintains compliance certifications. However, protocol differences (LVDS vs. IEEE 802.3) and data rate variations must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The DS92LV090ATVEH/NOPB is the manufacturer-recommended substitute for the obsolete PI90SD1636CFCEX. Both components share identical driver/receiver configuration (9/9 half-duplex) and compatible 64-pin surface mount packages. The substitute maintains ROHS3 compliance and is currently in active production status, ensuring long-term availability.

Key considerations for selection:

• Protocol Transition: The substitute operates on LVDS protocol rather than IEEE 802.3, requiring application-level compatibility assessment
• Data Rate Difference: The substitute supports 100Mbps versus the original 1.25Gbps specification
• Temperature Range: The substitute operates from -40°C to 85°C, narrower than the original 0°C to 150°C range
• Supply Voltage: The substitute voltage range (3V ~ 3.6V) overlaps with the original specification (3.15V ~ 3.45V)
• Availability: Active production status ensures component availability and supply chain continuity

Frequently Asked Questions (FAQ)

Q: Can the DS92LV090ATVEH/NOPB directly replace the PI90SD1636CFCEX in existing designs?

A: Direct replacement requires protocol compatibility verification. The substitute uses LVDS signaling instead of IEEE 802.3, and operates at 100Mbps rather than 1.25Gbps. Pin-level compatibility exists due to identical 9/9 half-duplex architecture and 64-pin LQFP/TQFP package, but firmware or signal conditioning adjustments may be necessary.

Q: What are the package differences between LQFP and TQFP?

A: Both LQFP (Low-profile Quad Flat Package) and TQFP (Thin Quad Flat Package) are 64-pin surface mount packages with 10x10mm footprints. Physical dimensions and PCB land patterns are compatible for this application.

Q: Is the supply voltage range compatible?

A: The substitute voltage range (3V ~ 3.6V) encompasses the original specification (3.15V ~ 3.45V). Systems designed for the original part will operate within the substitute's voltage tolerance.

Q: What is the impact of the narrower operating temperature range?

A: The substitute operates from -40°C to 85°C versus the original 0°C to 150°C. Applications requiring operation above 85°C or below -40°C cannot use this substitute without thermal management modifications or alternative component selection.

Q: Why is the data rate specification different?

A: The substitute is optimized for LVDS protocol at 100Mbps, while the original supported IEEE 802.3 at 1.25Gbps. Applications requiring the higher data rate must evaluate alternative substitutes or consider design modifications.

Q: What does the MSL rating difference mean for handling?

A: The original part has MSL 1 (unlimited moisture exposure tolerance), while the substitute has MSL 3 (168-hour moisture exposure limit). The substitute requires more stringent moisture control during storage and handling to prevent solder joint degradation.