AS7C1024B-15TCN Equivalent & Substitute Parts

Part Overview

The AS7C1024B-15TCN is a 1Mbit asynchronous SRAM memory IC manufactured by Alliance Memory, Inc., configured as 128K x 8 with parallel interface and 15 ns access time. The device operates at 4.5V to 5.5V supply voltage across the industrial temperature range of 0°C to 70°C. This part is actively produced and ROHS3 compliant, making it suitable for legacy system maintenance and new designs requiring compatible memory solutions. Equivalent and substitute parts are identified based on matching memory capacity, organization, interface type, and package specifications while accommodating variations in access time and operating temperature ranges.

Substiute Parts

AS7C1024B-15TCN

Alliance Memory, Inc.In Stock: 974AS7C1024B-15TCN Datasheet

Current PartRFQ

AS6C1008-55TIN

Alliance Memory, Inc.In Stock: 1600AS6C1008-55TIN Datasheet

MFR RecommendedRFQ

AS7C1024B-12TCN

Alliance Memory, Inc.In Stock: 1258AS7C1024B-12TCN Datasheet

MFR RecommendedRFQ

IS61C1024AL-12TLI

ISSI, Integrated Silicon Solution IncIn Stock: 4114IS61C1024AL-12TLI Datasheet

MFR RecommendedRFQ

IS62C1024AL-35TLI

ISSI, Integrated Silicon Solution IncIn Stock: 8093IS62C1024AL-35TLI Datasheet

MFR RecommendedRFQ

IS62C1024AL-35TLI-TR

ISSI, Integrated Silicon Solution IncIn Stock: 15866IS62C1024AL-35TLI-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AS7C1024B-15TCN are qualified based on the following criteria:

Core Compatibility Requirements:

• Memory capacity: 1Mbit
• Memory organization: 128K x 8
• Interface type: Parallel
• Package: 32-TFSOP surface mount
• Voltage supply: 4.5V ~ 5.5V minimum overlap

Allowable Variations:

• Access time: Equal to or faster than 15 ns (12 ns acceptable; 35 ns and 55 ns acceptable for non-timing-critical applications)
• Operating temperature: Extended ranges acceptable (e.g., -40°C ~ 85°C)
• Manufacturer: Different manufacturers acceptable if specifications match
• Packaging format: Tray or Tape & Reel acceptable

Non-Substitutable Variations:

• Memory size or organization changes
• Interface type changes
• Package type changes
• Voltage supply incompatibility

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Fastest Access Time): AS7C1024B-12TCN and IS61C1024AL-12TLI both provide 12 ns access time, exceeding the 15 ns specification of the main part. Both are ROHS3 compliant and actively produced. IS61C1024AL-12TLI offers extended operating temperature range (-40°C ~ 85°C) compared to the main part's 0°C ~ 70°C range.

Standard Substitution (Matching Access Time): IS62C1024AL-35TLI and IS62C1024AL-35TLI-TR provide 35 ns access time. These parts are suitable for applications where the 15 ns specification is not timing-critical. Both variants are ROHS3 compliant and actively produced. The -TR variant uses Tape & Reel packaging for high-volume applications.

Extended Temperature Range Substitution: AS6C1008-55TIN operates across -40°C ~ 85°C with 55 ns access time and supports lower voltage operation (2.7V minimum). This part is appropriate for applications requiring wider temperature tolerance and lower power supply flexibility, provided timing requirements permit 55 ns access time.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 3 rating. All are actively produced with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with slower access time than the original AS7C1024B-15TCN? A: Yes, if your application does not require the 15 ns timing specification. The IS62C1024AL-35TLI (35 ns) and AS6C1008-55TIN (55 ns) are electrically compatible. Verify that your system timing budget accommodates the slower access time before substitution.

Q: What is the difference between IS62C1024AL-35TLI and IS62C1024AL-35TLI-TR? A: Both parts are electrically identical with 35 ns access time and identical electrical specifications. The difference is packaging format: IS62C1024AL-35TLI is supplied in Tray format, while IS62C1024AL-35TLI-TR is supplied in Tape & Reel format. Select based on your procurement and assembly requirements.

Q: Can I substitute the AS7C1024B-15TCN with AS6C1008-55TIN in a 5V-only system? A: Yes. Although AS6C1008-55TIN supports 2.7V minimum supply voltage, it is fully compatible with 5V operation. The 4.5V ~ 5.5V range of the original part is within the 2.7V ~ 5.5V range of the substitute.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental compliance of the main part.

Q: Which substitute offers the best performance improvement? A: AS7C1024B-12TCN and IS61C1024AL-12TLI both provide 12 ns access time, which is 3 ns faster than the original 15 ns specification. IS61C1024AL-12TLI additionally offers extended operating temperature range (-40°C ~ 85°C).

Q: Can I use these substitutes in legacy equipment designed for the AS7C1024B-15TCN? A: Yes, provided the equipment's timing and temperature requirements are met. Verify that your system can tolerate the access time and temperature range of the selected substitute. Faster access times (12 ns) are backward compatible. Slower access times (35 ns, 55 ns) require timing verification.