AS7C32098A-12TIN Equivalent & Substitute Parts

Part Overview

The AS7C32098A-12TIN is an asynchronous SRAM memory IC manufactured by Alliance Memory, Inc. with 2Mbit capacity organized as 128K x 16 in a 44-TSOP2 surface mount package. This component is actively produced and widely used in embedded systems, industrial equipment, and legacy device designs requiring parallel interface volatile memory. Substitute parts are identified when equivalent electrical and mechanical specifications allow direct replacement without circuit modification.

Key Parameters

Parameter	Value
Memory Size	2Mbit
Memory Organization	128K x 16
Memory Interface	Parallel
Access Time	12 ns
Write Cycle Time	12 ns
Voltage Supply Range	3V ~ 3.6V
Operating Temperature	-40°C ~ 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 of the AS7C32098A-12TIN is determined by the following critical parameters:

Memory Capacity & Organization: The substitute must provide 2Mbit capacity with 128K x 16 organization to maintain address and data bus compatibility.

Interface Type: Parallel interface is mandatory for direct PCB replacement without firmware or hardware redesign.

Package Compatibility: The 44-TSOP form factor with 0.400" (10.16mm) width ensures mechanical fit on existing PCB layouts. Variants within the 44-TSOP family (44-TSOP2 vs. 44-TSOP II) are mechanically compatible.

Voltage Supply Range: The substitute must operate within the system's supply voltage specification. The AS7C32098A-12TIN requires 3V ~ 3.6V operation.

Temperature Range: Operating temperature specification of -40°C ~ 85°C must be met or exceeded.

Access & Cycle Time: The substitute's access time and write cycle time determine system timing compatibility. Faster or equal specifications allow substitution; slower specifications require timing verification.

Compliance Standards: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental requirements.

Parameter Comparison

Parameter	AS7C32098A-12TIN (Main)	IS62WV12816BLL-55TLI (Substitute)	Compatibility
Manufacturer	Alliance Memory, Inc.	ISSI, Integrated Silicon Solution Inc	Different manufacturer
Memory Size	2Mbit	2Mbit	Equivalent
Memory Organization	128K x 16	128K x 16	Equivalent
Memory Interface	Parallel	Parallel	Equivalent
Access Time	12 ns	55 ns	Substitute is slower
Write Cycle Time	12 ns	55 ns	Substitute is slower
Voltage Supply Range	3V ~ 3.6V	2.5V ~ 3.6V	Substitute has wider range
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Equivalent
Package Type	44-TSOP (0.400", 10.16mm)	44-TSOP (0.400", 10.16mm)	Equivalent
Supplier Package	44-TSOP2	44-TSOP II	Mechanically compatible variant
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	3 (168 Hours)	3 (168 Hours)	Equivalent
Product Status	Active	Active	Both actively produced

Engineering Selection Recommendations

The IS62WV12816BLL-55TLI is a valid substitute for the AS7C32098A-12TIN based on equivalent memory capacity, organization, interface type, package form factor, and compliance certifications. Both components are actively produced, RoHS3 compliant, and share identical MSL ratings.

The primary design consideration is access time and write cycle time. The substitute operates at 55 ns compared to the main part's 12 ns specification. This 4.6x timing difference is acceptable only in applications where system timing margins accommodate the slower memory response. Applications with tight timing constraints or high-frequency bus operations may require the faster AS7C32098A-12TIN.

The substitute's wider voltage supply range (2.5V ~ 3.6V versus 3V ~ 3.6V) provides additional operational flexibility in systems with variable supply conditions.

Both components maintain identical operating temperature ranges and package dimensions, ensuring mechanical and thermal compatibility on existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the IS62WV12816BLL-55TLI directly replace the AS7C32098A-12TIN on an existing PCB?

A: Yes, from a mechanical and electrical interface perspective. Both components use the 44-TSOP package with identical pin assignments for 2Mbit parallel SRAM. However, the substitute's 55 ns access time versus the original's 12 ns must be verified against system timing requirements before implementation.

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

A: The main difference is access and write cycle time. The AS7C32098A-12TIN operates at 12 ns, while the IS62WV12816BLL-55TLI operates at 55 ns. Both provide identical 2Mbit capacity in 128K x 16 organization with parallel interface.

Q: Are there pin-to-pin compatibility concerns?

A: No. Both components use the 44-TSOP package with equivalent pinouts for parallel SRAM operation. The 44-TSOP2 and 44-TSOP II package variants are mechanically compatible.

Q: Does the substitute meet the same compliance requirements?

A: Yes. Both the AS7C32098A-12TIN and IS62WV12816BLL-55TLI are RoHS3 compliant with identical MSL ratings of 3 (168 Hours), meeting standard manufacturing and environmental requirements.

Q: What voltage range does each component support?

A: The AS7C32098A-12TIN operates at 3V ~ 3.6V. The IS62WV12816BLL-55TLI operates at 2.5V ~ 3.6V, providing a wider operational range suitable for systems with variable supply voltages.

Q: Which component should be selected for new designs?

A: Selection depends on timing requirements. For applications requiring 12 ns access time, the AS7C32098A-12TIN is necessary. For applications tolerant of 55 ns access time, the IS62WV12816BLL-55TLI offers equivalent functionality with wider voltage range support.

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