SL23EP05SI-1HT Equivalent & Substitute Parts

Part Overview

The SL23EP05SI-1HT is a clock buffer IC manufactured by Skyworks Solutions Inc., designed for 220MHz clock distribution with a 1:5 input-to-output ratio in an 8-SOIC package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across frequency, voltage supply, package type, and circuit configuration parameters.

Key Parameters

Parameter	SL23EP05SI-1HT
Manufacturer	Skyworks Solutions Inc.
Category	Clock/Timing
Frequency - Max	220MHz
Ratio - Input:Output	1:5
Output Type	LVCMOS
Voltage - Supply	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
PLL	Yes

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Compatibility Criteria:

Frequency capability: 220MHz maximum or higher
Input-to-output ratio: 1:5 configuration
Package type: 8-SOIC (0.154", 3.90mm Width)
Output signal type: LVCMOS
Voltage supply range: Overlap with 2.3V ~ 3.6V
Operating temperature range: Support for -40°C ~ 85°C minimum

Substitute Classification:

All listed substitute parts (PL123E-05HSI, PL123E-05SC, PL123E-05SC-R, PL123E-05SI) are manufactured by Microchip Technology and meet the primary compatibility criteria. These parts maintain identical frequency (220MHz), ratio (1:5), package (8-SOIC), and temperature range specifications. SI53365-B-GTR from Skyworks Solutions operates at 200MHz with a 1:8 ratio and 16-TSSOP package, representing a different functional class and is not a direct substitute.

Parameter Comparison

Parameter	SL23EP05SI-1HT	PL123E-05HSI	PL123E-05SC	PL123E-05SC-R	PL123E-05SI
Manufacturer	Skyworks Solutions Inc.	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Frequency - Max	220MHz	220MHz	220MHz	220MHz	220MHz
Ratio - Input:Output	1:5	1:5	1:5	1:5	1:5
Output Type	LVCMOS	Clock	Clock	Clock	Clock
Voltage - Supply	2.3V ~ 3.6V	2.25V ~ 3.63V	2.25V ~ 3.63V	2.25V ~ 3.63V	2.25V ~ 3.63V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Packaging Option	-	Tube	Tube	Tape & Reel (TR)	Tube
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2A (4 Weeks)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

Direct Substitutes for Full Compatibility:

PL123E-05SC and PL123E-05SC-R are the preferred substitutes. Both parts maintain the complete operating temperature range (-40°C ~ 85°C) required by the original SL23EP05SI-1HT specification. PL123E-05SC-R is available in Tape & Reel packaging, suitable for high-volume production. PL123E-05SC is available in Tube packaging for lower-volume applications. Both are ROHS3 compliant with MSL rating of 1 (Unlimited), providing superior moisture handling compared to the original part.

Temperature-Constrained Substitutes:

PL123E-05HSI and PL123E-05SI maintain the full -40°C ~ 85°C operating temperature range but have higher MSL ratings (3, 168 Hours) compared to PL123E-05SC variants. These parts are suitable for applications where the extended temperature range is required and moisture sensitivity management is feasible.

Non-Recommended Substitute:

SI53365-B-GTR operates at 200MHz with a 1:8 ratio in a 16-TSSOP package. This part does not meet the functional requirements of the SL23EP05SI-1HT and represents a different product class.

Frequently Asked Questions (FAQ)

Q: Can PL123E-05SC-R replace SL23EP05SI-1HT in existing designs?

A: Yes. PL123E-05SC-R maintains identical frequency (220MHz), input-to-output ratio (1:5), package dimensions (8-SOIC), and operating temperature range (-40°C ~ 85°C). The part is pin-compatible and functionally equivalent. Tape & Reel packaging is suitable for automated assembly processes.

Q: What is the difference between PL123E-05SC and PL123E-05SC-R?

A: Both parts are electrically identical. The difference is packaging: PL123E-05SC is supplied in Tube format, while PL123E-05SC-R is supplied in Tape & Reel (TR) format. Selection depends on production volume and assembly equipment compatibility.

Q: Why do PL123E-05HSI and PL123E-05SI have higher MSL ratings?

A: MSL (Moisture Sensitivity Level) ratings indicate moisture absorption characteristics. PL123E-05HSI and PL123E-05SI have MSL 3 (168 Hours), requiring baking before reflow soldering if exposed to moisture. PL123E-05SC variants have MSL 1 (Unlimited), eliminating this requirement. For applications with extended storage or high-humidity environments, PL123E-05SC variants are preferred.

Q: Is SI53365-B-GTR a suitable alternative?

A: No. SI53365-B-GTR operates at 200MHz (lower than the required 220MHz) with a 1:8 ratio (different from the required 1:5) and uses a 16-TSSOP package (incompatible with the 8-SOIC footprint). This part does not meet the functional or physical requirements.

Q: What compliance certifications apply to the substitute parts?

A: All Microchip substitute parts (PL123E-05HSI, PL123E-05SC, PL123E-05SC-R, PL123E-05SI) are ROHS3 compliant and REACH unaffected. These certifications ensure environmental and regulatory compliance for new designs.

Q: Can I use PL123E-05HSI or PL123E-05SI if my application requires -40°C ~ 85°C operation?

A: Yes. Both PL123E-05HSI and PL123E-05SI support the full -40°C ~ 85°C operating temperature range. However, their higher MSL ratings (3, 168 Hours) require moisture management protocols during storage and assembly. If moisture sensitivity is a concern, PL123E-05SC variants with MSL 1 are preferred.

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