AS7C31026C-12TIN Equivalent & Substitute Parts

Part Overview

The AS7C31026C-12TIN is a 1Mbit asynchronous SRAM with parallel interface in 44-TSOP2 packaging, manufactured by Alliance Memory, Inc. This part operates at 3V to 3.6V supply voltage with 12 ns access time and is rated for -40°C to 85°C operating temperature. The device is currently obsolete, making equivalent substitutes necessary for ongoing system support and new designs requiring compatible memory solutions.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Size	1Mbit
Memory Organization	64K x 16
Memory Interface	Parallel
Access Time	12 ns
Write Cycle Time	12 ns
Voltage Supply	3V to 3.6V
Operating Temperature	-40°C to 85°C
Package Type	44-TSOP (0.400", 10.16mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Compatibility Criteria:

Memory size: 1Mbit
Memory organization: 64K x 16
Memory interface: Parallel
Package type: 44-TSOP or 44-TSOP II
Mounting type: Surface Mount

Secondary Compatibility Criteria:

Access time: Equal to or faster than 12 ns
Write cycle time: Equal to or faster than 12 ns
Voltage supply range: Must encompass or match 3V to 3.6V
Operating temperature range: Must support -40°C to 85°C or be suitable for the intended application temperature window
RoHS compliance: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (12 ns Access Time, 3V to 3.6V Supply): AS7C31026B-12TIN and 71V016SA12PHGI8, 71V016SA12PHG, 71V016SA12PHG8, 71V016SA12PHGI maintain identical electrical specifications with active product status.

Category 2 - Faster Alternatives (10 ns Access Time, 3V to 3.6V Supply): 71V016SA10PHG, 71V016SA10PHG8, 71V016SA10PHGI provide improved performance margin with faster access times.

Category 3 - Extended Supply Range (55 ns Access Time, 2.7V to 5.5V Supply): AS6C1016-55ZIN offers broader voltage compatibility but with slower access time, suitable only for applications not requiring 12 ns performance.

Category 4 - Faster with Limited Temperature Range (10 ns Access Time, 0°C to 70°C): 71V016SA10PHG and 71V016SA10PHG8 with restricted operating temperature are suitable for commercial-grade applications only.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Organization	Access Time (ns)	Write Cycle (ns)	Supply Voltage	Temp Range (°C)	Package	Product Status
AS7C31026C-12TIN	Alliance Memory	1Mbit	64K x 16	12	12	3.0-3.6V	-40 to 85	44-TSOP2	Obsolete
AS7C31026B-12TIN	Alliance Memory	1Mbit	64K x 16	12	12	3.0-3.6V	-40 to 85	44-TSOP2	Active
71V016SA12PHGI8	Renesas Electronics	1Mbit	64K x 16	12	12	3.0-3.6V	-40 to 85	44-TSOP II	Active
71V016SA10PHG	Renesas Electronics	1Mbit	64K x 16	10	10	3.15-3.6V	0 to 70	44-TSOP II	Active
71V016SA10PHG8	Renesas Electronics	1Mbit	64K x 16	10	10	3.15-3.6V	0 to 70	44-TSOP II	Active
71V016SA10PHGI	Renesas Electronics	1Mbit	64K x 16	10	10	3.15-3.6V	-40 to 85	44-TSOP II	Active
71V016SA12PHG	Renesas Electronics	1Mbit	64K x 16	12	12	3.0-3.6V	0 to 70	44-TSOP II	Active
71V016SA12PHG8	Renesas Electronics	1Mbit	64K x 16	12	12	3.0-3.6V	0 to 70	44-TSOP II	Active
71V016SA12PHGI	Renesas Electronics	1Mbit	64K x 16	12	12	3.0-3.6V	-40 to 85	44-TSOP II	Active
71V016SA15PHG	Renesas Electronics	1Mbit	64K x 16	15	15	3.0-3.6V	0 to 70	44-TSOP II	Active
AS6C1016-55ZIN	Alliance Memory	1Mbit	64K x 16	55	55	2.7-5.5V	-40 to 85	44-TSOP II	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): AS7C31026B-12TIN is the primary substitute, maintaining full compatibility with the obsolete AS7C31026C-12TIN. Both parts are Alliance Memory products with identical 12 ns access time, 3V to 3.6V supply range, and -40°C to 85°C operating temperature. AS7C31026B-12TIN is active and ROHS3 compliant.

For Active Production with Extended Temperature Support: 71V016SA12PHGI (Renesas Electronics) provides 12 ns performance with full -40°C to 85°C temperature range in 44-TSOP II packaging. This part is actively manufactured and ROHS3 compliant, suitable for designs requiring industrial temperature specifications.

For Performance-Enhanced Applications: 71V016SA10PHGI (Renesas Electronics) offers 10 ns access time with -40°C to 85°C operating range, providing timing margin for critical applications while maintaining full temperature coverage.

For Commercial-Grade Applications (0°C to 70°C): 71V016SA12PHG or 71V016SA12PHG8 (Renesas Electronics) are suitable when operating temperature is restricted to commercial range, with identical 12 ns performance specifications.

For Extended Supply Voltage Range: AS6C1016-55ZIN (Alliance Memory) supports 2.7V to 5.5V supply voltage but operates at 55 ns access time. This part is only suitable for applications where timing requirements are not critical and broader voltage tolerance is required.

All recommended substitutes are ROHS3 compliant and carry MSL rating 3 (168 Hours).

Frequently Asked Questions (FAQ)

Q: Can AS7C31026C-12TIN be directly replaced with AS7C31026B-12TIN? A: Yes. Both parts share identical electrical specifications: 1Mbit capacity, 64K x 16 organization, 12 ns access time, 3V to 3.6V supply, and -40°C to 85°C operating temperature. The primary difference is product status; AS7C31026B-12TIN is active while AS7C31026C-12TIN is obsolete.

Q: What is the difference between 44-TSOP2 and 44-TSOP II packaging? A: Both are 44-pin thin small outline packages with 0.400" (10.16mm) width. The designations reflect different manufacturer naming conventions but are mechanically and electrically compatible for this device class.

Q: Can I use 71V016SA10PHGI instead of AS7C31026C-12TIN? A: Yes, with performance improvement. The 71V016SA10PHGI provides 10 ns access time versus the original 12 ns, maintaining full -40°C to 85°C temperature range and 3V to 3.6V supply compatibility. Faster access time is backward compatible.

Q: Is AS6C1016-55ZIN a suitable substitute? A: AS6C1016-55ZIN is electrically compatible in terms of memory capacity and organization but operates at 55 ns access time. It is suitable only for applications where the original 12 ns timing is not required. The extended 2.7V to 5.5V supply range is an additional feature not needed for 3V to 3.6V systems.

Q: What does ROHS3 compliance mean for this part? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes carry ROHS3 certification.

Q: Why do some Renesas parts have restricted temperature ranges (0°C to 70°C)? A: These variants are designated for commercial-grade applications. Parts with -40°C to 85°C range (industrial grade) are available from the same manufacturer for applications requiring extended temperature support.

Q: Can packaging type affect substitution? A: Packaging affects handling and storage but not electrical function. 44-TSOP2 and 44-TSOP II are mechanically compatible. Tube, Tray, and Tape & Reel packaging options affect supply chain logistics but not device performance.

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