Equivalent & Substitute Parts for 71342LA55PFI

Part Overview

The 71342LA55PFI is a 32Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation in a 64-TQFP package. This parallel interface memory device operates at 55 ns access time with a supply voltage range of 4.5V to 5.5V and temperature range of -40°C to 85°C. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	32Kbit
Memory Organization	4K x 8
Memory Interface	Parallel
Access Time	55 ns
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	64-TQFP (14x14)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the 71342LA55PFI is determined by the following critical parameters:

Memory capacity (32Kbit) and organization (4K x 8) must remain identical
Dual-port asynchronous SRAM technology must be maintained
Parallel interface configuration must be preserved
Package type must be 64-TQFP (14x14) for PCB compatibility
Supply voltage range must encompass or match 4.5V ~ 5.5V
Operating temperature range must cover -40°C ~ 85°C minimum
Access time may be equal to or faster than the original specification

The 71342LA25PFGI qualifies as a direct substitute based on these criteria. It maintains identical memory capacity, organization, technology, interface, package, voltage, and temperature specifications while offering improved access time performance (25 ns versus 55 ns).

Parameter Comparison

Parameter	71342LA55PFI (Main Part)	71342LA25PFGI (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	32Kbit	32Kbit
Memory Organization	4K x 8	4K x 8
Memory Interface	Parallel	Parallel
Access Time	55 ns	25 ns
Write Cycle Time	55 ns	25 ns
Voltage Supply	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	64-TQFP (14x14)	64-TQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 71342LA25PFGI is the qualified substitute for the 71342LA55PFI. Selection of the substitute part is supported by the following factors:

The substitute maintains full electrical and mechanical compatibility with the original part specification
The substitute is in active production status, ensuring long-term availability and supply chain stability
The substitute achieves ROHS3 compliance, whereas the original part is non-compliant
The substitute offers improved access time performance (25 ns) without requiring circuit modifications
Both parts share identical package geometry, pinout, and mounting requirements for direct PCB replacement
The substitute is REACH unaffected, providing additional regulatory compliance assurance

Frequently Asked Questions (FAQ)

Q: Can the 71342LA25PFGI be used as a direct replacement for the 71342LA55PFI?

A: Yes. The 71342LA25PFGI is electrically and mechanically compatible with the 71342LA55PFI. Both parts feature identical memory capacity (32Kbit), organization (4K x 8), package type (64-TQFP), pinout, voltage supply range (4.5V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). The substitute can be soldered directly onto existing PCBs designed for the original part without circuit modifications.

Q: What is the primary difference between these two parts?

A: The primary difference is access time. The 71342LA25PFGI operates at 25 ns access time, compared to 55 ns for the 71342LA55PFI. This represents a performance improvement. The substitute also offers ROHS3 compliance and active production status, whereas the original part is obsolete and non-compliant.

Q: Are there any timing considerations when substituting the 71342LA25PFGI for the 71342LA55PFI?

A: No timing conflicts arise from this substitution. The substitute's faster access time (25 ns) is fully backward compatible with circuits designed for the original 55 ns specification. Systems designed for the slower part will operate correctly with the faster substitute.

Q: Do both parts require identical handling and storage conditions?

A: Both parts share the same Moisture Sensitivity Level (MSL 3, 168 Hours), requiring identical handling, storage, and reflow procedures. No changes to component management protocols are necessary when transitioning to the substitute part.

Q: Is the package footprint identical between these parts?

A: Yes. Both the 71342LA55PFI and 71342LA25PFGI use the 64-TQFP (14x14) package with identical pinout and land pattern. No PCB redesign is required for substitution.

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