AS6C6264A-70PCN Equivalent & Substitute Parts

Part Overview

The AS6C6264A-70PCN is a 64Kbit asynchronous SRAM (Static Random Access Memory) IC manufactured by Alliance Memory, Inc., configured as 8K x 8 with parallel interface and 70 ns access time. This component is designed for applications requiring volatile memory with through-hole mounting in a 28-DIP package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

AS6C6264A-70PCN

Alliance Memory, Inc.In Stock: 1083AS6C6264A-70PCN Datasheet

Current PartRFQ

AS6C6264-55PCN

Alliance Memory, Inc.In Stock: 1875AS6C6264-55PCN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AS6C6264A-70PCN is determined by the following critical parameters:

• Memory capacity (64Kbit) and organization (8K x 8) must remain identical
• Parallel interface configuration is mandatory
• Package type (28-DIP) and mounting method (through hole) must match for PCB compatibility
• Access time and write cycle time must be equal to or faster than the original specification (70 ns or less)
• Voltage supply range must be compatible with system requirements
• Operating temperature range must encompass the application environment
• Base product number (AS6C6264) identifies the core device family

The AS6C6264-55PCN qualifies as a direct substitute because it maintains identical memory capacity, organization, interface type, and package configuration while providing faster access time (55 ns) and broader voltage compatibility (2.7V ~ 5.5V).

Parameter Comparison

Engineering Selection Recommendations

The AS6C6264-55PCN is suitable as a direct replacement for the AS6C6264A-70PCN based on the following factors:

• Both parts maintain ROHS3 compliance and identical regulatory status (REACH Unaffected, ECCN EAR99)
• The substitute provides improved performance with 55 ns access time versus the original 70 ns specification
• Extended voltage supply range (2.7V ~ 5.5V) provides greater design flexibility compared to the original 4.5V ~ 5.5V range
• Identical package footprint and through-hole mounting ensure direct PCB compatibility without layout modifications
• The substitute is currently active in production with higher inventory availability (1852 Pcs) compared to the discontinued main part

Frequently Asked Questions (FAQ)

Q: Can the AS6C6264-55PCN be used as a direct replacement for the AS6C6264A-70PCN?

A: Yes. Both parts share identical memory capacity (64Kbit), organization (8K x 8), parallel interface, and 28-DIP package configuration. The substitute's faster access time (55 ns) is compatible with systems designed for 70 ns operation.

Q: What is the primary difference between these two parts?

A: The AS6C6264-55PCN provides faster access and write cycle times (55 ns versus 70 ns) and supports a lower minimum supply voltage (2.7V versus 4.5V). Both differences favor the substitute part.

Q: Are there any PCB layout changes required when substituting the AS6C6264-55PCN?

A: No. Both parts use identical 28-DIP package dimensions (0.600", 15.24mm) and through-hole mounting, requiring no PCB modifications.

Q: Does the substitute part meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant with identical REACH and ECCN classifications (REACH Unaffected, EAR99).

Q: What is the operating temperature range for both parts?

A: Both the AS6C6264A-70PCN and AS6C6264-55PCN operate across 0°C to 70°C (TA).