Renesas 71024S25TYGI8 SRAM 1Mbit Parallel Asynchronous Memory IC Equivalent & Substitute Parts

Part Overview

The Renesas 71024S25TYGI8 is a 1Mbit asynchronous SRAM memory IC with parallel interface, organized as 128K x 8 bits, housed in a 32-SOJ surface mount package. This part operates at 4.5V to 5.5V supply voltage with a 25 ns access time and write cycle time. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts maintain identical memory capacity, organization, interface type, and package specifications while offering improved performance characteristics or active product status.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Size	1Mbit
Memory Organization	128K x 8
Memory Interface	Parallel
Technology	SRAM - Asynchronous
Access Time	25 ns
Write Cycle Time	25 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-BSOJ (0.300", 7.62mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: memory capacity (1Mbit), memory organization (128K x 8), interface type (parallel), package type (32-BSOJ), supply voltage range (4.5V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). Access time and write cycle time are performance characteristics that may vary among substitutes; faster access times are backward compatible with applications designed for the 71024S25TYGI8. All substitute parts listed maintain identical electrical and mechanical specifications except for access time performance, which is equal to or faster than the original part.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Organization	Access Time (ns)	Write Cycle Time (ns)	Supply Voltage	Package	Product Status	RoHS Status
71024S25TYGI8	Renesas Electronics	1Mbit	128K x 8	25	25	4.5V ~ 5.5V	32-BSOJ	Obsolete	Not Specified
71024S12TYGI8	Renesas Electronics	1Mbit	128K x 8	12	12	4.5V ~ 5.5V	32-BSOJ	Active	ROHS3 Compliant
71024S15TYGI8	Renesas Electronics	1Mbit	128K x 8	15	15	4.5V ~ 5.5V	32-BSOJ	Active	ROHS3 Compliant
71024S20TYGI8	Renesas Electronics	1Mbit	128K x 8	20	20	4.5V ~ 5.5V	32-BSOJ	Active	ROHS3 Compliant
IS61C1024AL-12JLI	ISSI (Integrated Silicon Solution Inc)	1Mbit	128K x 8	12	12	4.5V ~ 5.5V	32-BSOJ	Active	ROHS3 Compliant
IS61C1024AL-12JLI-TR	ISSI (Integrated Silicon Solution Inc)	1Mbit	128K x 8	12	12	4.5V ~ 5.5V	32-BSOJ	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using the obsolete 71024S25TYGI8, the Renesas 71024S20TYGI8 provides the closest performance match with active product status and ROHS3 compliance. The 71024S15TYGI8 and 71024S12TYGI8 offer improved access time performance while maintaining full electrical and mechanical compatibility. Both Renesas and ISSI variants (IS61C1024AL-12JLI and IS61C1024AL-12JLI-TR) are functionally equivalent with 12 ns access time specifications. Selection between Renesas and ISSI parts depends on supply chain availability and packaging requirements (tray versus tape & reel). All substitute parts are ROHS3 compliant and maintain identical MSL ratings.

Frequently Asked Questions (FAQ)

Q: Can the 71024S25TYGI8 be directly replaced with faster access time variants? A: Yes. The 71024S20TYGI8, 71024S15TYGI8, and 71024S12TYGI8 are direct substitutes with faster or equal access times. Faster access times are backward compatible with applications designed for 25 ns operation.

Q: What is the difference between Renesas and ISSI part numbers? A: Both manufacturers produce functionally equivalent 1Mbit parallel SRAM devices in identical 32-BSOJ packages with matching electrical specifications. ISSI variants (IS61C1024AL series) offer the same memory capacity, organization, and interface with 12 ns access time performance.

Q: Are packaging variants (tray versus tape & reel) interchangeable? A: Packaging variants (71024S12TYGI8 versus IS61C1024AL-12JLI-TR) contain identical die and electrical specifications. Selection depends on assembly process requirements and supply chain logistics. Tape & reel packaging is standard for automated pick-and-place assembly.

Q: Does the 71024S25TYGI8 require RoHS compliance verification? A: The original 71024S25TYGI8 does not specify RoHS status. All active substitute parts (71024S12TYGI8, 71024S15TYGI8, 71024S20TYGI8, IS61C1024AL-12JLI, IS61C1024AL-12JLI-TR) are ROHS3 compliant.

Q: What is the MSL rating and handling requirement? A: All parts carry MSL 3 (168 Hours) rating, requiring standard moisture control during storage and assembly. No special handling beyond standard ESD precautions is necessary.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message