Equivalent & Substitute Parts for 71024S20TYGI

Part Overview

The 71024S20TYGI is a 1Mbit asynchronous SRAM manufactured by Renesas Electronics Corporation, configured as 128K x 8 with parallel interface and 20 ns access time. This volatile memory IC is housed in a 32-SOJ surface mount package and operates across the industrial temperature range of -40°C to 85°C. The part is currently active in production status with ROHS3 compliance and is suitable for applications requiring high-speed parallel memory access with standard 5V supply operation.

Substitute parts are identified when equivalent memory capacity, organization, interface type, and package specifications are maintained while allowing variations in access time and manufacturer origin.

Key Parameters

Parameter	Value
Memory Size	1Mbit
Memory Organization	128K x 8
Memory Format	SRAM
Memory Interface	Parallel
Access Time	20 ns
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-BSOJ (0.300", 7.62mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 71024S20TYGI is determined by the following mandatory parameters:

Memory Size: 1Mbit (exact match required)
Memory Organization: 128K x 8 (exact match required)
Memory Format: SRAM asynchronous (exact match required)
Memory Interface: Parallel (exact match required)
Package / Case: 32-BSOJ surface mount (exact match required)
Voltage Supply: 4.5V ~ 5.5V (exact match required)
Operating Temperature: -40°C ~ 85°C (exact match required)

Parameters that may vary between substitute parts:

Access Time: Faster access times (lower ns values) are acceptable as they represent improved performance characteristics
Manufacturer: Different manufacturers producing equivalent specifications are acceptable
Packaging Format: Tube versus Tray packaging does not affect electrical or mechanical compatibility

The identified substitute parts maintain all mandatory parameters while offering equal or superior access time performance.

Parameter Comparison

Parameter	71024S20TYGI	71024S15TYGI	IS61C1024AL-12JLI
Manufacturer	Renesas Electronics	Renesas Electronics	ISSI
Memory Size	1Mbit	1Mbit	1Mbit
Memory Organization	128K x 8	128K x 8	128K x 8
Memory Format	SRAM	SRAM	SRAM
Memory Interface	Parallel	Parallel	Parallel
Access Time	20 ns	15 ns	12 ns
Write Cycle Time	20 ns	15 ns	12 ns
Voltage Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	32-BSOJ	32-BSOJ	32-BSOJ
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both substitute parts maintain active production status and full ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original 71024S20TYGI.

The 71024S15TYGI offers a 5 ns performance improvement while maintaining identical manufacturer origin (Renesas Electronics), package specifications, and all electrical parameters. This part is suitable for applications where faster memory access provides system-level benefits without design modification.

The IS61C1024AL-12JLI provides the fastest access time at 12 ns, representing an 8 ns improvement over the original specification. As a cross-manufacturer substitute from ISSI, this part maintains identical electrical and mechanical compatibility while offering enhanced performance characteristics. The packaging format differs (Tray versus Tube) but does not affect circuit board integration or functional operation.

All three parts are electrically and mechanically interchangeable within the specified parameters and may be selected based on availability, lead time, cost considerations, and performance requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 71024S15TYGI directly replace the 71024S20TYGI in existing designs?

A: Yes. The 71024S15TYGI maintains identical memory capacity, organization, interface type, package dimensions, voltage supply range, and operating temperature specifications. The faster 15 ns access time is a performance enhancement that does not require circuit redesign.

Q: Is the IS61C1024AL-12JLI compatible with the original 71024S20TYGI pinout?

A: Yes. The IS61C1024AL-12JLI uses the same 32-BSOJ package with identical pin assignments, voltage supply requirements, and operating temperature range. The 12 ns access time represents improved performance without functional incompatibility.

Q: What is the difference between Tube and Tray packaging?

A: Tube and Tray packaging formats are shipping and storage containers that do not affect the electrical or mechanical properties of the IC itself. Both formats contain identical components with the same specifications and performance characteristics. Selection between formats depends on assembly line requirements and inventory management practices.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 71024S20TYGI, 71024S15TYGI, and IS61C1024AL-12JLI all carry ROHS3 compliance certification, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: Can faster access time parts cause compatibility issues?

A: No. Faster access times represent improved performance and do not introduce compatibility issues. Systems designed for 20 ns access time operate correctly with 15 ns or 12 ns parts, as the memory responds more quickly than the original specification requires.

Q: What is the MSL rating and why is it relevant?

A: MSL (Moisture Sensitivity Level) 3 indicates that all three parts require controlled storage conditions with exposure to moisture limited to 168 hours at specified humidity levels before soldering. This specification is identical across all parts and does not affect substitution decisions.

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