Manufacturer Part Number

7140SA25PF

Description

8Kbit dual-port static random-access memory (SRAM) IC. Designed for parallel data transfers. Has a fast access and write time of 25 nanoseconds. Integrated in a 64-pin TQFP package (14x14 mm size). Allows simultaneous data access from two ports. Supports asynchronous operation, suitable for high-speed communication between processors. Obsolete product but available as new original stock.

Specifications

Memory Type: Volatile SRAM

Technology: Dual Port, Asynchronous

Memory Size: 8Kbit

Organization: 1K x 8-bit

Interface: Parallel

Access Time: 25 ns

Write Cycle Time: 25 ns

Supply Voltage: 4.5V to 5.5V

Operating Temperature Range: 0°C to 70°C

Package: Surface Mount, 64-TQFP (14x14 mm)

RoHS Status: Non-compliant

REACH Status: Unaffected

Moisture Sensitivity: Level 3 (168 hours)

Product Status: Obsolete

Inventory: 654 pieces new original

Device Structure

Internal organization is 1K words by 8 bits, dual-port architecture enables two separate and independent access ports. Asynchronous design means each port functions independently, no clock is required. Housed in a 64-pin thin quad flat package, designed for surface mounting on PCBs.

Performance Characteristics

Fast access and write cycle time (25ns) ensures low-latency data transfer. Supports concurrent read/write for both ports. Optimized for communication between two processors or for providing shared memory. Voltage input flexibility from 4.5V to 5.5V supports legacy 5V systems.

Application Environments

Used in networking, telecommunication systems, dual-processor communication, and shared memory set-ups. Suitable for cache memory, buffer memory, and inter-processor communication. Designed for industrial and commercial electronic equipment where simultaneous high-speed memory access is needed.

Selection Guidelines

Choose this model when dual-port asynchronous SRAM is required and both ports need simultaneous, independent access. Confirm voltage supply (4.5V-5.5V) matches your system. Ensure the 64-TQFP package fits your PCB layout and assembly lines. Obsolescence should be considered for long-term planning—suitable for legacy system repair or extension, but not for new designs.

Usage Considerations

Device is not RoHS compliant—avoid for new projects requiring lead-free compliance. Only operates up to 70°C, not designed for high-temperature industrial or automotive use. Moisture sensitivity: Parts must be mounted within 168 hours after opening. Product is obsolete—inventory is limited, plan for end-of-life management. Handle surface mount with appropriate reflow soldering techniques.

Potential Equivalent/Replacement Models

7140LA25PFG is suggested as a substitute or equivalent model. For other potential alternatives not listed, contact Ariat-Tech sales team to check for replacements or cross-reference with available inventory.

For more options or technical support, contact the Ariat-Tech sales team with your requirements.

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