SY89327LMI-TR Mixed Signal Translator Equivalent & Substitute Parts

Part Overview

The SY89327LMI-TR is a mixed signal translator manufactured by Microchip Technology, designed for unidirectional signal translation in high-speed digital applications. This 8-MLF® packaged device operates at 2.5Gbps and translates between multiple input signal types (CML, CMOS, HSTL, LVDS, TTL) to LVPECL differential output. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and design requirements.

Substiute Parts

SY89327LMI-TR

Microchip TechnologyIn Stock: 1036SY89327LMI-TR Datasheet

Current PartRFQ

SY89327LMG-TR

Microchip TechnologyIn Stock: 18287SY89327LMG-TR Datasheet

DirectRFQ

NB100LVEP91DWG

onsemiIn Stock: 1165NB100LVEP91DWG Datasheet

MFR RecommendedRFQ

NB100LVEP91DWR2G

onsemiIn Stock: 3875NB100LVEP91DWR2G Datasheet

MFR RecommendedRFQ

NB100LVEP91MNG

onsemiIn Stock: 3025NB100LVEP91MNG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SY89327LMI-TR is determined by the following critical parameters:

Primary Substitution Criteria:

• Translator Type: Mixed Signal
• Channel Type: Unidirectional
• Number of Circuits: 1
• Output Signal Type: LVPECL or LVNECL (compatible differential output standards)
• Operating Temperature Range: -40°C to 85°C minimum
• Data Rate: Equal to or greater than 2.5Gbps

Secondary Considerations:

• Channels per Circuit: 1 or greater (additional channels acceptable)
• Input Signal Compatibility: Must support at least CML, HSTL, LVDS, LVPECL, LVTTL
• Package Type: Surface mount packages acceptable
• Product Status: Active preferred for long-term availability

The substitute parts are grouped into two categories: direct Microchip equivalents and manufacturer-recommended onsemi alternatives. Direct equivalents maintain identical electrical specifications and packaging footprint compatibility. Manufacturer-recommended alternatives provide functional equivalence with different package configurations and channel counts.

Parameter Comparison

Engineering Selection Recommendations

SY89327LMG-TR (Microchip Technology)

This is the direct equivalent substitute for the SY89327LMI-TR. It maintains identical electrical specifications, data rate (2.5Gbps), channel configuration (1 circuit, 1 channel), and package footprint (8-MLF®). The primary advantage is active product status with 18,200 units in stock, ensuring long-term availability. The part is ROHS3 compliant, addressing regulatory requirements where the original part does not. This substitute requires no design modifications and provides pin-for-pin compatibility.

NB100LVEP91MNG (onsemi)

This onsemi alternative provides functional equivalence with expanded channel capacity (3 channels per circuit) and broader input signal support. The 24-QFN package offers a larger footprint than the original 8-MLF®, requiring PCB layout modifications. Data rate is 2Gbps, which is lower than the original 2.5Gbps specification. MSL rating of 1 (Unlimited) matches the original part. This option is suitable for applications where the additional channels provide system-level benefits and the lower data rate remains acceptable.

NB100LVEP91DWR2G (onsemi)

This onsemi alternative is packaged in Tape & Reel format with identical electrical specifications to NB100LVEP91MNG. The 20-SOIC package differs from the original 8-MLF®, requiring PCB redesign. With 3,844 units in stock and active product status, this part provides reliable supply. MSL rating of 3 (168 Hours) requires controlled storage conditions compared to the original MSL 1 rating.

NB100LVEP91DWG (onsemi)

This onsemi alternative is supplied in Tube packaging with the same electrical specifications as NB100LVEP91DWR2G. The 20-SOIC package requires PCB layout modifications. With 1,107 units in stock, this option has lower inventory availability than the Tape & Reel variant.

Frequently Asked Questions (FAQ)

Q: Can SY89327LMG-TR be used as a direct replacement for SY89327LMI-TR?

A: Yes. SY89327LMG-TR is a direct equivalent with identical electrical specifications, data rate (2.5Gbps), channel configuration, and 8-MLF® package footprint. No design modifications are required. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What are the key differences between Microchip and onsemi substitutes?

A: Microchip SY89327LMG-TR maintains the original 1-channel, 2.5Gbps specification with 8-MLF® packaging. onsemi NB100LVEP91 series parts offer 3 channels per circuit at 2Gbps with different package options (20-SOIC or 24-QFN). The onsemi parts require PCB layout modifications but provide expanded functionality.

Q: Does the lower data rate (2Gbps) of onsemi parts affect compatibility?

A: The onsemi parts operate at 2Gbps versus the original 2.5Gbps. This is a lower specification and must be evaluated against system requirements. If the application requires 2.5Gbps operation, onsemi alternatives are not suitable. If the system operates below 2Gbps, onsemi parts are functionally compatible.

Q: What is the impact of different package types?

A: The original SY89327LMI-TR uses 8-MLF® (2x2) packaging. SY89327LMG-TR maintains this footprint. onsemi alternatives use 20-SOIC or 24-QFN packages, requiring PCB redesign, different trace routing, and via placement. Pin counts differ: 8-MLF® has 8 pins, 20-SOIC has 20 pins, and 24-QFN has 24 pins.

Q: Are there MSL (Moisture Sensitivity Level) considerations?

A: The original part and SY89327LMG-TR have MSL 1 (Unlimited), requiring no special moisture control. onsemi NB100LVEP91DWG and NB100LVEP91DWR2G have MSL 3 (168 Hours), requiring controlled storage and handling within 168 hours of package opening. NB100LVEP91MNG has MSL 1 (Unlimited), matching the original specification.

Q: Which substitute offers the best long-term availability?

A: SY89327LMG-TR offers the highest inventory (18,200 units) with active product status and direct equivalence. This part is the recommended choice for designs requiring the original specifications without modification.

Q: Can I use an onsemi part if I need to maintain the original 8-MLF® package?

A: No. All onsemi NB100LVEP91 variants use either 20-SOIC or 24-QFN packages. If the 8-MLF® footprint is mandatory, SY89327LMG-TR is the only substitute option.

Q: What input signal types do the substitute parts support?

A: SY89327LMG-TR supports CML, CMOS, HSTL, LVDS, TTL (same as original). onsemi NB100LVEP91 series supports CML, HSTL, LVCMOS, LVDS, LVPECL, LVTTL, providing broader input compatibility including LVPECL and LVCMOS.

Q: Is RoHS compliance a factor in selecting a substitute?

A: The original SY89327LMI-TR is RoHS non-compliant. SY89327LMG-TR and all onsemi alternatives are ROHS3 compliant. If RoHS compliance is required for your application or market, the original part cannot be used, and compliant substitutes must be selected.