ICS2305MI-1H Equivalent & Substitute Parts

Part Overview

The ICS2305MI-1H is a fanout buffer (distribution) and zero delay buffer IC manufactured by Renesas Electronics Corporation. This clock/timing component operates at a maximum frequency of 133MHz with a 1:5 input-to-output ratio, featuring PLL with bypass capability and CMOS/TTL output compatibility. The device is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	ICS2305MI-1H
Manufacturer	Renesas Electronics Corporation
Product Status	Obsolete
Frequency - Max	133MHz
Ratio - Input:Output	1:5
Voltage - Supply	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
PLL	Yes with Bypass
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the ICS2305MI-1H are qualified based on the following electrical and mechanical parameters:

Maximum frequency capability of 133MHz or higher
1:5 input-to-output ratio
Supply voltage range of 3V to 3.6V
8-SOIC (0.154", 3.90mm Width) package compatibility
PLL with bypass functionality
Surface mount configuration

All substitute parts listed are manufactured by Microchip Technology and meet or exceed the electrical specifications of the original Renesas component. Substitutes are grouped by operating temperature range and packaging format (Tube, Tape & Reel, or Cut Tape).

Parameter Comparison

Part Number	Manufacturer	Frequency - Max	Ratio - Input:Output	Voltage - Supply	Operating Temperature	Package / Case	Product Status	RoHS Status	Packaging Format
ICS2305MI-1H	Renesas Electronics	133MHz	1:5	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm)	Obsolete	RoHS non-compliant	N/A
PL123-05HSC	Microchip Technology	134MHz	1:5	3V ~ 3.6V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Tube
PL123-05HSC-R	Microchip Technology	134MHz	1:5	3V ~ 3.6V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Tape & Reel
PL123-05HSI	Microchip Technology	134MHz	1:5	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Tube
PL123-05SC	Microchip Technology	134MHz	1:5	3V ~ 3.6V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Tube
PL123-05SC-R	Microchip Technology	134MHz	1:5	3V ~ 3.6V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Cut Tape
PL123-05SI	Microchip Technology	134MHz	1:5	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Tube
PL123-05SI-R	Microchip Technology	134MHz	1:5	3V ~ 3.6V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm)	Active	ROHS3 Compliant	Tape & Reel
PL123S-05SC	Microchip Technology	134MHz	1:5	3V ~ 3.6V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm)	Discontinued at DiGi Electronics	ROHS3 Compliant	Tube
PL123S-05SC-R	Microchip Technology	134MHz	1:5	3V ~ 3.6V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm)	Discontinued at DiGi Electronics	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

For applications requiring the full operating temperature range of -40°C to 85°C, select PL123-05HSI, PL123-05SI, or PL123-05SI-R. These parts maintain compatibility with the original ICS2305MI-1H temperature specification while providing active product status and ROHS3 compliance.

For applications operating within the 0°C to 70°C range, PL123-05HSC, PL123-05HSC-R, PL123-05SC, or PL123-05SC-R are suitable alternatives. These options offer the highest inventory availability and active manufacturing status.

All Microchip Technology PL123 series substitutes are ROHS3 compliant, addressing the RoHS non-compliance limitation of the original Renesas component. Packaging format selection (Tube, Tape & Reel, or Cut Tape) depends on procurement and assembly requirements.

Parts marked as discontinued at DiGi Electronics (PL123S-05SC and PL123S-05SC-R) remain functionally equivalent but may have limited availability through alternative distribution channels.

Frequently Asked Questions (FAQ)

Q: Can PL123-05HSC be used as a direct replacement for ICS2305MI-1H in all applications?

A: PL123-05HSC is electrically compatible and meets all core specifications (134MHz frequency, 1:5 ratio, 3V-3.6V supply, 8-SOIC package). However, its operating temperature range is 0°C to 70°C, which is narrower than the original -40°C to 85°C range. Use this part only if your application operates within the 0°C to 70°C window.

Q: Which substitute part matches the full temperature range of the ICS2305MI-1H?

A: PL123-05HSI, PL123-05SI, and PL123-05SI-R all operate across -40°C to 85°C, matching the original component's temperature specification. Choose based on packaging format: Tube (PL123-05HSI or PL123-05SI) or Tape & Reel (PL123-05SI-R).

Q: What is the difference between PL123-05SC and PL123-05SC-R?

A: Both parts are electrically identical with 134MHz frequency and 1:5 ratio. The difference is packaging format: PL123-05SC is supplied in Tube format, while PL123-05SC-R is supplied in Cut Tape format. Select based on your assembly process requirements.

Q: Are all Microchip PL123 substitutes RoHS compliant?

A: Yes, all listed Microchip Technology PL123 series parts are ROHS3 compliant, providing an upgrade from the RoHS non-compliant ICS2305MI-1H.

Q: What does the "-R" suffix indicate in part numbers like PL123-05SI-R?

A: The "-R" suffix indicates Tape & Reel packaging format, suitable for automated assembly processes. Parts without this suffix are typically supplied in Tube format for manual handling or smaller volume applications.

Q: Can I use PL123S-05SC as a substitute?

A: PL123S-05SC meets all electrical specifications and is functionally equivalent. However, it is discontinued at DiGi Electronics, indicating limited ongoing availability. Prioritize active parts like PL123-05SI or PL123-05HSI for new designs.

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