Equivalent & Substitute Parts for 71V2546S150PFG

Part Overview

The 71V2546S150PFG is a 4.5Mbit Synchronous SRAM (ZBT) memory IC manufactured by Renesas Electronics Corporation. This parallel interface memory device operates at 150 MHz with a 3.8 ns access time in a 100-TQFP (14x14) package. The part is classified as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to maintain system compatibility and ensure continued availability for legacy designs and production requirements.

Key Parameters

Parameter	71V2546S150PFG
Memory Size	4.5Mbit
Memory Organization	128K x 36
Memory Interface	Parallel
Clock Frequency	150 MHz
Access Time	3.8 ns
Voltage Supply	3.135V ~ 3.465V
Operating Temperature	0°C ~ 70°C
Package	100-TQFP (14x14)
Technology	SRAM - Synchronous, SDR (ZBT)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the 71V2546S150PFG is determined by the following critical parameters:

Memory Capacity: 4.5Mbit (128K x 36 organization)
Interface Type: Parallel
Technology: SRAM - Synchronous, SDR (ZBT)
Package Type: 100-TQFP or 100-LQFP footprint compatibility
Supply Voltage: 3.135V ~ 3.465V
Pin Count: 100 pins

Substitute parts must maintain identical memory capacity, organization, and parallel interface. Clock frequency and access time may vary, provided the substitute meets or exceeds the performance requirements of the original design. Package dimensions and pin assignments must be compatible with the PCB layout. Operating temperature range may differ based on application requirements.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Organization	Clock Frequency (MHz)	Access Time (ns)	Package	Operating Temp (°C)	Product Status
71V2546S150PFG	Renesas	4.5Mbit	128K x 36	150	3.8	100-TQFP (14x14)	0 ~ 70	Last Time Buy
71V2556S133PFG	IDT	4.5Mbit	128K x 36	133	4.2	100-TQFP (14x14)	0 ~ 70	Active
71V3557S80PFGI	Renesas	4.5Mbit	128K x 36	80	8	100-TQFP (14x14)	-40 ~ 85	Active
71V546S100PFG	IDT	4.5Mbit	128K x 36	100	5	100-TQFP (14x20)	0 ~ 70	Active
71V546S133PFGI	Renesas	4.5Mbit	128K x 36	133	4.2	100-TQFP (14x14)	-40 ~ 85	Active
71V547S100PFGI	IDT	4.5Mbit	128K x 36	100	10	100-TQFP (14x14)	-40 ~ 85	Active
71V547S80PFG	IDT	4.5Mbit	128K x 36	80	8	100-TQFP (14x14)	0 ~ 70	Active
IS61NLP12836B-200TQLI	ISSI	4.5Mbit	128K x 36	200	3.1	100-LQFP (14x20)	-40 ~ 85	Active

Engineering Selection Recommendations

Direct Replacement (Same Operating Temperature Range):

71V2556S133PFG and 71V547S80PFG are suitable for applications requiring identical 0°C to 70°C operating temperature specifications. Both parts maintain the 100-TQFP (14x14) package footprint and are in Active product status, ensuring long-term availability.

Extended Temperature Range Substitutes:

71V3557S80PFGI, 71V546S133PFGI, 71V547S100PFGI, and IS61NLP12836B-200TQLI support -40°C to 85°C operating temperature ranges. These parts are suitable for applications requiring extended temperature performance and are all in Active product status.

Performance Considerations:

IS61NLP12836B-200TQLI offers the highest clock frequency (200 MHz) and fastest access time (3.1 ns), exceeding the original part specifications. This part uses 100-LQFP (14x20) packaging, which requires PCB layout verification for pin compatibility.

71V546S100PFG uses 100-TQFP (14x20) packaging. Physical package dimensions differ from the original 100-TQFP (14x14), requiring PCB footprint validation before selection.

All substitute parts maintain 3.3V supply voltage compatibility and ROHS3 compliance where specified.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different clock frequency?

A: Yes, provided the substitute part's clock frequency meets or exceeds your system's timing requirements. Lower frequency parts (71V3557S80PFGI, 71V547S80PFG at 80 MHz) are suitable for designs operating at or below 80 MHz. Higher frequency parts (IS61NLP12836B-200TQLI at 200 MHz) are backward compatible with lower frequency requirements.

Q: What is the difference between 100-TQFP (14x14) and 100-TQFP (14x20) packages?

A: Both are 100-pin TQFP packages with identical pin counts and electrical characteristics. The dimensions differ: (14x14) is a square package, while (14x20) is rectangular. PCB footprint compatibility must be verified before substitution. 100-LQFP (14x20) uses the same footprint as 100-TQFP (14x20).

Q: Are all substitute parts RoHS3 compliant?

A: RoHS3 compliance is specified for 71V3557S80PFGI, 71V546S133PFGI, and IS61NLP12836B-200TQLI. Compliance status for 71V2556S133PFG, 71V546S100PFG, 71V547S100PFGI, and 71V547S80PFG is not provided in the available data.

Q: Which substitute offers the best performance upgrade?

A: IS61NLP12836B-200TQLI provides the highest performance with 200 MHz clock frequency and 3.1 ns access time. However, package dimensions (100-LQFP 14x20) differ from the original, requiring PCB layout verification.

Q: Can I use parts with extended temperature ranges in standard temperature applications?

A: Yes. Parts rated for -40°C to 85°C are fully compatible with 0°C to 70°C applications. Extended temperature range parts provide additional design margin and are suitable for any application within their specified range.

Q: What is the inventory status of substitute parts?

A: All substitute parts listed are in Active product status with confirmed inventory availability, ranging from 687 to 2511 pieces in stock.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message