IDT71024S12TY Equivalent & Substitute Parts

Part Overview

The IDT71024S12TY is a 1Mbit asynchronous SRAM memory IC manufactured by Renesas Electronics Corporation, featuring parallel interface architecture with 128K x 8 organization and 12 ns access time. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Size	1Mbit
Memory Organization	128K x 8
Memory Interface	Parallel
Access Time	12 ns
Write Cycle Time	12 ns
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	32-BSOJ (0.300", 7.62mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	MSL 3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the IDT71024S12TY is determined by strict equivalence across the following critical parameters:

Memory capacity and organization (1Mbit, 128K x 8)
Access and write cycle timing (12 ns)
Parallel interface architecture
Supply voltage range (4.5V ~ 5.5V)
Package form factor (32-BSOJ)
Mounting technology (Surface Mount)
Moisture sensitivity classification (MSL 3)

The substitute parts listed maintain full electrical and mechanical compatibility with the original specification. Variations in product status, RoHS compliance, and operating temperature range do not affect functional substitutability within the defined parameter set.

Parameter Comparison

Parameter	IDT71024S12TY	71024S12TYG	IS61C1024AL-12JLI	IS61C1024AL-12JLI-TR
Manufacturer	Renesas Electronics	Renesas Electronics	ISSI	ISSI
Memory Size	1Mbit	1Mbit	1Mbit	1Mbit
Organization	128K x 8	128K x 8	128K x 8	128K x 8
Access Time	12 ns	12 ns	12 ns	12 ns
Write Cycle Time	12 ns	12 ns	12 ns	12 ns
Supply Voltage	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package	32-BSOJ	32-BSOJ	32-BSOJ	32-BSOJ
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
MSL Rating	MSL 3	MSL 3	MSL 3	MSL 3
Product Status	Obsolete	Active	Active	Active
RoHS Compliance	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Standard	Tube	Tray	Tape & Reel

Engineering Selection Recommendations

71024S12TYG (Renesas Electronics): Direct manufacturer equivalent with identical electrical specifications and active product status. Offers ROHS3 compliance and improved availability compared to the obsolete IDT71024S12TY. Suitable for direct replacement in new production and legacy system maintenance.

IS61C1024AL-12JLI (ISSI): Cross-manufacturer substitute with equivalent electrical performance. Extended operating temperature range (-40°C ~ 85°C) provides broader environmental capability. ROHS3 compliant. Available in tray packaging for standard production volumes.

IS61C1024AL-12JLI-TR (ISSI): Functionally identical to IS61C1024AL-12JLI with tape and reel packaging format. Optimized for automated assembly processes and high-volume production environments. Extended temperature range and ROHS3 compliance maintained.

Frequently Asked Questions (FAQ)

Q: Can the 71024S12TYG directly replace the IDT71024S12TY in existing designs?

A: Yes. The 71024S12TYG maintains full electrical and mechanical equivalence across all critical parameters including memory capacity, timing specifications, voltage supply range, and package form factor. Pin-for-pin compatibility is assured.

Q: What is the primary advantage of ISSI IS61C1024AL-12JLI variants over the Renesas 71024S12TYG?

A: The ISSI parts feature an extended operating temperature range of -40°C ~ 85°C compared to 0°C ~ 70°C for the Renesas equivalent. This broader temperature specification accommodates industrial and extended-temperature applications.

Q: Are there packaging considerations when selecting between substitute parts?

A: Yes. The 71024S12TYG is supplied in tube packaging, IS61C1024AL-12JLI in tray format, and IS61C1024AL-12JLI-TR in tape and reel format. Selection depends on production volume, assembly automation requirements, and inventory management practices. All three maintain identical electrical performance.

Q: Do all substitute parts meet current compliance standards?

A: The 71024S12TYG and both ISSI variants are ROHS3 compliant. The original IDT71024S12TY is RoHS non-compliant. All parts maintain REACH unaffected status and identical ECCN and HTSUS classifications.

Q: Is the extended temperature range of ISSI parts necessary for standard applications?

A: The extended temperature range is not required for applications operating within 0°C ~ 70°C. Selection between Renesas and ISSI variants should be based on specific application temperature requirements and compliance mandates rather than performance differences within the standard operating range.

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