SY100EL91ZC-TR Equivalent & Substitute Parts

Part Overview

The SY100EL91ZC-TR is a mixed signal translator IC manufactured by Microchip Technology, designed to convert PECL input signals to ECL output signals in a unidirectional configuration. This device features 1 circuit with 3 channels per circuit in a 20-SOIC surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

SY100EL91ZC-TR

Microchip TechnologyIn Stock: 924SY100EL91ZC-TR Datasheet

Current PartRFQ

MC100EL91DWG

onsemiIn Stock: 1088MC100EL91DWG Datasheet

MFR RecommendedRFQ

MC100EL91DWR2G

onsemiIn Stock: 2466MC100EL91DWR2G Datasheet

MFR RecommendedRFQ

MC10EP90DTG

onsemiIn Stock: 1061MC10EP90DTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SY100EL91ZC-TR is determined by the following critical parameters:

• Translator Type: Mixed Signal
• Channel Configuration: Unidirectional, 1 circuit, 3 channels per circuit
• Signal Conversion: PECL input to ECL output
• Output Type: Differential
• Package: 20-SOIC surface mount
• Electrical Compatibility: Operating temperature range and signal specifications

Substitute parts must maintain identical signal conversion characteristics (PECL to ECL), channel count, and package form factor to ensure direct replacement capability. Parts with different signal conversion directions or package types are not suitable direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement):

MC100EL91DWG and MC100EL91DWR2G are functionally equivalent to the SY100EL91ZC-TR. Both are manufactured by onsemi, maintain identical signal conversion (PECL to ECL), circuit configuration, and 20-SOIC package specifications. Both parts are currently active products with ROHS3 compliance. The primary difference is packaging format: MC100EL91DWG is supplied in Tube packaging, while MC100EL91DWR2G is supplied in Tape & Reel (TR) format. Selection between these two should be based on procurement and assembly requirements.

Both substitute parts support an extended operating temperature range of -40°C to 85°C, which encompasses the original part's 0°C to 85°C specification. Moisture sensitivity level increases from MSL 1 to MSL 3 (168 Hours) in the substitute parts.

Non-Recommended Substitute:

MC10EP90DTG is not a suitable direct substitute. Although it maintains the same circuit and channel configuration, it performs the inverse signal conversion (ECL input to PECL/LVPECL output), making it incompatible with applications requiring PECL-to-ECL translation. Additionally, this part uses a 20-TSSOP package rather than 20-SOIC, requiring PCB layout modifications. The part is also listed as obsolete.

Frequently Asked Questions (FAQ)

Q: Can MC100EL91DWG and MC100EL91DWR2G be used interchangeably with SY100EL91ZC-TR?

A: Yes. Both parts are electrically and mechanically equivalent. They perform identical PECL-to-ECL signal translation with the same circuit and channel configuration in the 20-SOIC package. Selection depends on packaging format requirements: Tube (DWG) or Tape & Reel (DWR2G).

Q: What is the difference between MC100EL91DWG and MC100EL91DWR2G?

A: The parts are electrically identical. MC100EL91DWG is supplied in Tube packaging, while MC100EL91DWR2G is supplied in Tape & Reel format. Choose based on your assembly process and procurement workflow.

Q: Why is MC10EP90DTG not recommended as a substitute?

A: MC10EP90DTG performs the opposite signal conversion (ECL input to PECL output) and uses a different package (20-TSSOP instead of 20-SOIC). It is not functionally compatible with applications designed for PECL-to-ECL translation and would require PCB redesign.

Q: Are there temperature range considerations when substituting?

A: The substitute parts (MC100EL91DWG and MC100EL91DWR2G) support -40°C to 85°C operation, which exceeds the original part's 0°C to 85°C range. This provides broader environmental compatibility for applications operating at lower temperatures.

Q: What are the RoHS compliance differences?

A: The original SY100EL91ZC-TR is RoHS non-compliant. Both recommended substitutes (MC100EL91DWG and MC100EL91DWR2G) are ROHS3 compliant, meeting current environmental and regulatory standards.