72V263L7-5PF8 Equivalent & Substitute Parts

Part Overview

The 72V263L7-5PF8 is a Synchronous FIFO memory IC manufactured by Renesas Electronics Corporation, configured as 144K (8K x 18 / 16K x 9) with 5ns access time and 133.3MHz data rate in an 80-TQFP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The part operates within a 3.15V to 3.45V supply range and is suitable for applications requiring uni-directional FIFO buffering with programmable flags and FWFT (First Word Fall Through) support.

Substiute Parts

72V263L7-5PF8

Renesas Electronics CorporationIn Stock: 74372V263L7-5PF8 Datasheet

Current PartRFQ

SN74V263PZAEP

Texas InstrumentsIn Stock: 1081SN74V263PZAEP Datasheet

UpgradeRFQ

SN74V263-6PZA

Texas InstrumentsIn Stock: 811SN74V263-6PZA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 72V263L7-5PF8 is determined by strict equivalence in the following critical parameters: memory configuration (144K with 8K x 18 / 16K x 9 organization), uni-directional bus architecture, programmable flags support, FWFT capability, and compatible package footprint (80-LQFP / 80-TQFP). The supply voltage range (3.15V ~ 3.45V) and maximum supply current (35mA) must remain constant across all substitutes. Access time and data rate may vary within acceptable performance margins, provided the substitute meets or exceeds the original specification. All substitute parts must maintain the same functional feature set including retransmit capability and depth/width expansion support.

Parameter Comparison

Engineering Selection Recommendations

Both Texas Instruments substitutes (SN74V263PZAEP and SN74V263-6PZA) are active products with ROHS3 compliance, addressing the obsolescence status of the original Renesas component. The SN74V263PZAEP provides direct performance equivalence with 5ns access time and 133MHz data rate, matching the original specification envelope. The SN74V263-6PZA offers enhanced performance with 4.5ns access time and 166MHz data rate while maintaining identical supply voltage and current parameters, making it suitable for applications requiring improved timing margins. Both parts are available in 80-LQFP packaging, which is mechanically and electrically compatible with the original 80-TQFP footprint. Selection between the two Texas Instruments options depends on whether the application requires performance matching (SN74V263PZAEP) or performance enhancement (SN74V263-6PZA). The extended operating temperature range of SN74V263PZAEP (-55°C ~ 125°C) provides additional environmental flexibility compared to the original 0°C ~ 70°C specification.

Frequently Asked Questions (FAQ)

Q: Are the 80-TQFP and 80-LQFP packages pin-compatible? A: Yes. Both packages maintain identical pin counts (80), pitch, and functional pin assignments for this FIFO IC family. The packages are mechanically and electrically interchangeable for PCB layout purposes.

Q: Can SN74V263-6PZA be used as a direct replacement for 72V263L7-5PF8? A: Yes. The SN74V263-6PZA meets all functional and electrical requirements of the original part. The improved access time (4.5ns vs 5ns) and higher data rate (166MHz vs 133.3MHz) provide performance enhancement without introducing compatibility issues.

Q: What is the difference between SN74V263PZAEP and SN74V263-6PZA? A: Both parts share identical memory configuration, supply voltage, and current specifications. The primary differences are access time (5ns vs 4.5ns), data rate (133MHz vs 166MHz), and operating temperature range (-55°C ~ 125°C vs 0°C ~ 70°C). Selection depends on application timing requirements and environmental operating conditions.

Q: Does the RoHS3 compliance of the substitute parts affect circuit functionality? A: No. RoHS3 compliance indicates lead-free manufacturing and reduced hazardous substances. This is a manufacturing and environmental specification that does not alter electrical or functional performance in the application circuit.

Q: Are programmable flags and FWFT features identical across all three parts? A: Yes. All three parts (72V263L7-5PF8, SN74V263PZAEP, and SN74V263-6PZA) support programmable flags and FWFT operation identically. Functional behavior in these modes is equivalent.

Q: What supply voltage tolerance must be maintained during substitution? A: All three parts require 3.15V ~ 3.45V supply voltage. This specification is identical and must be maintained regardless of which part is selected.