PL123S-05SC Clock Multiplexer Equivalent & Substitute Parts

Part Overview

The PL123S-05SC is a clock multiplexer IC manufactured by Microchip Technology, designed for 1:5 clock multiplication at frequencies up to 134MHz. This component operates with a 3V to 3.6V supply voltage and is housed in an 8-SOIC surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing system support and new designs requiring compatible clock multiplication functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	PL123S-05SC
Manufacturer	Microchip Technology
Category	Clock/Timing
Package / Case	8-SOIC (0.154", 3.90mm Width)
Frequency - Max	134MHz
Ratio - Input:Output	1:5
Voltage - Supply	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C
PLL	Yes with Bypass
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitute parts for the PL123S-05SC are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Ratio - Input:Output: 1:5
Voltage - Supply: 3V ~ 3.6V
Frequency - Max: 133MHz or higher
PLL: Yes with Bypass
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

All substitute parts listed are Renesas Electronics Corporation zero delay buffer ICs that maintain electrical compatibility through matching supply voltage ranges, input/output ratios, and package specifications. The maximum frequency of 133MHz in substitute parts is functionally equivalent to the 134MHz specification of the original part within typical clock multiplication applications. Operating temperature ranges vary between substitutes, with some supporting extended industrial temperature ranges (-40°C ~ 85°C) while others maintain the standard commercial range (0°C ~ 70°C).

Parameter Comparison

Parameter	PL123S-05SC	2305-1DCG	2305-1DCG8	2305-1DCGI	2305-1DCGI8	2305-1HDCG	2305-1HDCG8	2305-1HDCGI	2305-1HDCGI8	2305A-1DCG	2305A-1DCG8
Manufacturer	Microchip Technology	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
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)	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)	8-SOIC (0.154", 3.90mm Width)
Frequency - Max	134MHz	133MHz	133MHz	133MHz	133MHz	133MHz	133MHz	133MHz	133MHz	133MHz	133MHz
Ratio - Input:Output	1:5	1:5	1:5	1:5	1:5	1:5	1:5	1:5	1:5	1:5	1:5
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C
PLL	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass	Yes with Bypass
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts are active products from Renesas Electronics Corporation with ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the discontinued PL123S-05SC. The substitutes function as zero delay buffer ICs with equivalent electrical specifications across the critical parameters of supply voltage, input/output ratio, and package form factor.

Selection between substitute options depends on packaging requirements and operating temperature range needs. Parts with "8" suffix designation (2305-1DCG8, 2305-1DCGI8, 2305-1HDCG8, 2305-1HDCGI8, 2305A-1DCG8) are supplied in Tape & Reel format, while parts without this suffix are available in Tube packaging. Parts with "I" designation (2305-1DCGI, 2305-1DCGI8, 2305-1HDCGI, 2305-1HDCGI8) support extended industrial temperature range (-40°C ~ 85°C), whereas standard commercial temperature range variants (0°C ~ 70°C) are suitable for standard operating environments.

The 2305-1HDCG8 and 2305-1HDCGI8 variants offer the highest inventory availability at 4200 and 2156 units respectively, providing supply chain stability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PL123S-05SC with any of the listed Renesas substitutes?

A: Yes. All listed Renesas parts maintain electrical compatibility through matching 8-SOIC package specifications, 1:5 input/output ratio, 3V to 3.6V supply voltage range, and PLL with bypass functionality. The 133MHz maximum frequency specification of Renesas parts is functionally equivalent to the 134MHz specification of the original part in clock multiplication applications.

Q: What is the difference between parts with and without the "8" suffix?

A: The "8" suffix indicates Tape & Reel packaging format, while parts without this suffix are supplied in Tube packaging. Electrical specifications remain identical between these variants.

Q: Which substitute should I select for industrial temperature applications?

A: Parts designated with "I" (2305-1DCGI, 2305-1DCGI8, 2305-1HDCGI, 2305-1HDCGI8) support the extended industrial temperature range of -40°C to 85°C. Standard commercial variants support 0°C to 70°C operation.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, matching the regulatory compliance of the original PL123S-05SC.

Q: What is the difference between the 2305-1 and 2305A-1 base product numbers?

A: Both base product families maintain identical electrical specifications for clock multiplication functionality. Selection between these families depends on packaging preference (Tube versus Tape & Reel) and inventory availability.

Q: Can I use these substitutes in existing PCB designs without layout modifications?

A: Yes. All substitute parts use the identical 8-SOIC (0.154", 3.90mm Width) package, enabling direct footprint compatibility on existing PCB layouts without design changes.

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