Equivalent & Substitute Parts for 71342LA55PF

Part Overview

The 71342LA55PF is a 32Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation in a 64-TQFP surface mount package. This part features a 55 ns access time and parallel memory interface with 4K x 8 organization. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

71342LA55PF

Renesas Electronics CorporationIn Stock: 1550671342LA55PF Datasheet

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71342LA20PFG

Renesas Electronics CorporationIn Stock: 106871342LA20PFG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 71342LA55PF is determined by the following critical parameters:

• Memory capacity and organization (32Kbit, 4K x 8) must remain identical
• Dual-port asynchronous SRAM technology must be maintained
• Parallel memory interface configuration must match
• Package type must be 64-TQFP (14x14) for PCB compatibility
• Supply voltage range (4.5V ~ 5.5V) must be compatible
• Operating temperature range (0°C ~ 70°C) must be supported
• Access time and write cycle time may be equal to or faster than the original specification

The 71342LA20PFG qualifies as a direct substitute based on these parameters. It maintains identical memory capacity, organization, technology, interface, package, voltage, and temperature specifications while providing improved performance through faster access and write cycle times (20 ns versus 55 ns).

Parameter Comparison

Engineering Selection Recommendations

The 71342LA20PFG is the qualified substitute for the 71342LA55PF. Selection of this substitute provides the following advantages:

• Active product status ensures continued availability and supply chain reliability
• ROHS3 compliance meets current environmental and regulatory requirements, whereas the original part is RoHS non-compliant
• Improved performance specifications (20 ns access and write cycle times) provide timing margin in system designs
• Identical electrical and mechanical specifications ensure direct PCB compatibility without design modification
• Both parts maintain REACH unaffected status and EAR99 export classification

Frequently Asked Questions (FAQ)

Q: Can the 71342LA20PFG be used as a direct replacement for the 71342LA55PF?

A: Yes. The 71342LA20PFG is electrically and mechanically compatible. Both parts share identical memory capacity (32Kbit), organization (4K x 8), package type (64-TQFP), voltage range (4.5V ~ 5.5V), and operating temperature range (0°C ~ 70°C). The substitute offers faster access and write cycle times, which are backward compatible with designs specified for 55 ns operation.

Q: What are the key differences between these parts?

A: The primary differences are access time (20 ns versus 55 ns), write cycle time (20 ns versus 55 ns), product status (active versus obsolete), and RoHS compliance (ROHS3 compliant versus non-compliant). All other electrical and mechanical parameters are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 64-TQFP (14x14) surface mount package with identical pinout and mechanical dimensions. No PCB layout modifications are required.

Q: Does the faster access time of the 71342LA20PFG affect system compatibility?

A: No. Faster access times are backward compatible. Systems designed for 55 ns operation will function correctly with the 20 ns substitute part.

Q: What is the moisture sensitivity level for both parts?

A: Both parts are classified as MSL 3 with a floor life of 168 hours. Identical moisture handling and storage procedures apply to both components.

Q: Is the 71342LA20PFG available in the same packaging format?

A: The 71342LA20PFG is supplied in tray packaging, whereas the original part specification does not specify packaging format. Both parts use the same 64-TQFP (14x14) component package suitable for surface mount assembly.