Equivalent & Substitute Parts for 8312AYILF Clock Fanout Buffer

Part Overview

The 8312AYILF is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, designed for 1:12 clock distribution at frequencies up to 250 MHz. This device features LVCMOS and LVTTL input/output compatibility with a 32-LQFP package footprint.

The 8312AYILF has reached obsolete product status. Identifying qualified substitute components ensures design continuity and supply chain reliability for applications requiring equivalent clock distribution functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	8312AYILF
Manufacturer	Renesas Electronics Corporation
Product Category	Clock/Timing - Fanout Buffer (Distribution)
Type	Fanout Buffer (Distribution)
Number of Circuits	1
Ratio - Input:Output	1:12
Frequency - Max	250 MHz
Input Logic Levels	LVCMOS, LVTTL
Output Logic Levels	LVCMOS, LVTTL
Voltage - Supply	1.6V ~ 3.465V
Operating Temperature Range	-40°C ~ 85°C
Package / Case	32-LQFP (7x7)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute components for the 8312AYILF are qualified based on the following critical parameters:

Functional Equivalence: 1:12 clock distribution ratio with single circuit configuration
Frequency Specification: Maximum operating frequency of 250 MHz
Logic Compatibility: LVCMOS and LVTTL input/output support
Electrical Specifications: Supply voltage range 1.6V ~ 3.465V and operating temperature range -40°C ~ 85°C
Package Compatibility: 32-LQFP (7x7) surface mount package
Regulatory Compliance: ROHS3 compliance and EAR99 classification

The identified substitute parts (NB3V8312CFAG and NB3V8312CFAR2G) from onsemi meet all critical electrical and mechanical parameters. Both parts maintain the same 1:12 distribution ratio, 250 MHz maximum frequency, supply voltage range, operating temperature range, and 32-LQFP package specification. The primary differences are product status (Active vs. Obsolete) and packaging format (Tray vs. Cut Tape & Digi-Reel).

Parameter Comparison

Parameter	8312AYILF (Renesas)	NB3V8312CFAG (onsemi)	NB3V8312CFAR2G (onsemi)
Product Category	Clock/Timing - Fanout Buffer	Clock/Timing - Fanout Buffer	Clock/Timing - Fanout Buffer
Type	Fanout Buffer (Distribution)	Fanout Buffer (Distribution)	Fanout Buffer (Distribution)
Number of Circuits	1	1	1
Ratio - Input:Output	1:12	1:12	1:12
Differential - Input:Output	No/No	No/No	No/No
Input Logic Levels	LVCMOS, LVTTL	LVCMOS, LVTTL	LVCMOS, LVTTL
Output Logic Levels	LVCMOS, LVTTL	LVCMOS	LVCMOS
Frequency - Max	250 MHz	250 MHz	250 MHz
Voltage - Supply	1.6V ~ 3.465V	1.6V ~ 3.465V	1.6V ~ 3.465V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	32-LQFP (7x7)	32-LQFP (7x7)	32-LQFP (7x7)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active
Packaging Format	Standard	Tray	Cut Tape (CT) & Digi-Reel®
Moisture Sensitivity Level (MSL)	3 (168 Hours)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Both NB3V8312CFAG and NB3V8312CFAR2G from onsemi are qualified substitutes for the obsolete 8312AYILF. Selection between these two onsemi alternatives should be based on procurement and assembly requirements:

NB3V8312CFAG is supplied in Tray packaging format and maintains ROHS3 compliance with MSL rating of 2 (1 Year). This option is suitable for standard production environments with typical moisture control measures.

NB3V8312CFAR2G is the manufacturer-recommended substitute, supplied in Cut Tape (CT) & Digi-Reel® format with identical electrical specifications and ROHS3 compliance. This packaging format supports automated assembly processes and high-volume production workflows. The higher inventory availability (33,300 pcs) provides superior supply chain continuity.

Both substitutes demonstrate improved moisture sensitivity ratings (MSL 2) compared to the original 8312AYILF (MSL 3), reducing handling and storage risk during manufacturing.

Frequently Asked Questions (FAQ)

Q: Can NB3V8312CFAG and NB3V8312CFAR2G be used interchangeably with 8312AYILF?

A: Yes. Both onsemi parts meet all critical electrical and mechanical specifications: 1:12 clock distribution ratio, 250 MHz maximum frequency, LVCMOS/LVTTL logic compatibility, 1.6V ~ 3.465V supply voltage range, -40°C ~ 85°C operating temperature, and 32-LQFP package footprint. The primary difference is packaging format (Tray vs. Cut Tape & Digi-Reel).

Q: What is the difference between NB3V8312CFAG and NB3V8312CFAR2G?

A: Both parts are electrically identical with matching performance specifications. The differences are: (1) Packaging format—NB3V8312CFAG uses Tray packaging while NB3V8312CFAR2G uses Cut Tape & Digi-Reel format; (2) Inventory availability—NB3V8312CFAR2G has significantly higher stock (33,300 pcs vs. 2,120 pcs); (3) Recommended status—NB3V8312CFAR2G is the manufacturer-recommended substitute.

Q: Are there any output logic level differences between the original and substitutes?

A: The original 8312AYILF supports both LVCMOS and LVTTL output logic levels. Both onsemi substitutes (NB3V8312CFAG and NB3V8312CFAR2G) support LVCMOS output. If LVTTL output is required, this difference must be evaluated against specific application requirements.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: The original 8312AYILF has MSL 3 (168 Hours), while both onsemi substitutes have MSL 2 (1 Year). Lower MSL ratings indicate reduced moisture sensitivity and longer shelf life. This represents an improvement in handling and storage characteristics for the substitute parts.

Q: Which substitute should be selected for new designs?

A: NB3V8312CFAR2G is the manufacturer-recommended substitute. It provides superior supply chain availability, supports automated assembly through Digi-Reel packaging, and maintains all required electrical specifications. NB3V8312CFAG is an alternative if Tray packaging is preferred for specific assembly processes.

Q: Are both substitutes ROHS3 compliant?

A: Yes. Both NB3V8312CFAG and NB3V8312CFAR2G are ROHS3 compliant, matching the compliance status of the original 8312AYILF.

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