Equivalent & Substitute Parts for 7132LA55C

Part Overview

The 7132LA55C is a 16Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation, housed in a 48-DIP through-hole package with a 55 ns access time. This part is classified as obsolete, making substitute components necessary for ongoing system support and new designs. The part operates within a 4.5V to 5.5V supply range and is rated for 0°C to 70°C operating temperatures. Due to its obsolete status and RoHS non-compliance, identifying compatible alternatives is essential for procurement and design continuity.

Key Parameters

Parameter	Value
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Type	Volatile SRAM
Technology	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel
Access Time	55 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	48-DIP (0.600", 15.24mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 7132LA55C is determined by strict adherence to the following electrical and mechanical parameters:

Core Compatibility Requirements:

Memory capacity: 16Kbit (2K x 8 organization)
Memory type: Volatile SRAM with dual-port, asynchronous architecture
Memory interface: Parallel
Voltage supply: 4.5V ~ 5.5V
Package compatibility: Physical and electrical pin compatibility

Substitution Logic: The 7132LA55C can be substituted by parts from the same 7132LA base product family that maintain identical memory specifications and voltage requirements. Substitutes may differ in access time (faster or equal), operating temperature range, package form factor, mounting type, and product status. Parts with faster access times are backward-compatible with the original specification. Package changes from through-hole to surface-mount require PCB redesign but maintain electrical compatibility.

Parameter Comparison

Parameter	7132LA55C (Main)	7132LA20JG	7132LA100CB
Memory Size	16Kbit	16Kbit	16Kbit
Memory Organization	2K x 8	2K x 8	2K x 8
Memory Type	Volatile SRAM	Volatile SRAM	Volatile SRAM
Technology	SRAM - Dual Port, Asynchronous	SRAM - Dual Port, Asynchronous	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel	Parallel	Parallel
Access Time	55 ns	20 ns	100 ns
Voltage Supply Range	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-55°C ~ 125°C
Package Type	48-DIP (0.600", 15.24mm)	52-LCC (J-Lead)	48-DIP (0.600", 15.24mm)
Mounting Type	Through Hole	Surface Mount	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant

Engineering Selection Recommendations

7132LA20JG is an active product with ROHS3 compliance, offering superior performance with 20 ns access time. This part requires PCB redesign due to package change from 48-DIP to 52-LCC surface-mount. Selection is appropriate for new designs prioritizing compliance and performance. Existing through-hole designs cannot use this substitute without board-level modifications.

7132LA100CB maintains the 48-DIP through-hole package, enabling direct socket replacement without PCB redesign. This part is active and supports extended operating temperature range (-55°C to 125°C). Access time of 100 ns is slower than the original 55 ns specification but remains within acceptable parameters for most applications. RoHS non-compliance status matches the original part. This substitute is optimal for legacy system support requiring minimal design changes.

Frequently Asked Questions (FAQ)

Q: Can 7132LA20JG directly replace 7132LA55C in existing designs? A: Electrical substitution is valid due to identical memory specifications and voltage requirements. However, package incompatibility (52-LCC surface-mount versus 48-DIP through-hole) prevents direct socket replacement. PCB redesign is required.

Q: Is 7132LA100CB a pin-compatible substitute? A: Yes. Both parts use 48-DIP through-hole packaging with identical pinout. Direct socket replacement is possible without PCB modifications.

Q: What is the impact of different access times on substitution? A: The 7132LA20JG (20 ns) offers faster access than the original 55 ns specification and is fully backward-compatible. The 7132LA100CB (100 ns) is slower but acceptable for applications not requiring the original 55 ns performance. System timing analysis is required to confirm compatibility.

Q: Does RoHS compliance affect substitution decisions? A: RoHS compliance is a regulatory and procurement consideration. The 7132LA20JG is ROHS3 compliant, while 7132LA100CB maintains RoHS non-compliance matching the original part. Selection depends on end-product regulatory requirements.

Q: Can substitutes operate across the full temperature range of the original part? A: The 7132LA20JG and original 7132LA55C share identical operating range (0°C to 70°C). The 7132LA100CB supports extended range (-55°C to 125°C), providing greater flexibility for industrial and military applications.

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