Manufacturer Part Number

7140SA35PF

Description

This product is an 8Kbit Dual Port Asynchronous SRAM memory IC. It supports parallel data access with a 35ns access time and comes in a 64-TQFP package measuring 14x14 mm. Designed for high-speed and simultaneous data handling in embedded systems, industrial controllers, and signal processing devices. The device status is obsolete with limited inventory available.

Specifications

Technology: Dual Port SRAM, Asynchronous

Memory Size: 8Kbit (8192 bits)

Memory Organization: 1K x 8 (1,024 words x 8 bits/word)

Interface: Parallel

Write Cycle Time: 35 nanoseconds

Access Time: 35 nanoseconds

Supply Voltage: 4.5V to 5.5V

Operating Temperature: 0°C to 70°C

Mounting Type: Surface Mount

Package: 64-LQFP (Low-profile Quad Flat Package), 14mm x 14mm

MSL (Moisture Sensitivity Level): 3 (168 hours floor life)

RoHS Status: Non-compliant

REACH Status: Unaffected

Product Status: Obsolete

ECCN: EAR99

HTSUS: 8542.32.0041

Inventory: 935 pieces in stock

Device Structure

The 7140SA35PF is a CMOS-based dual port SRAM. It contains two independent data ports that allow simultaneous read/write operations, significantly improving data throughput and reducing bottlenecks in system design. It is organized as 1K x 8 bits. All I/O, address, and control pins are directly accessible on a parallel bus via the TQFP package.

Performance Characteristics

Fast 35ns read and write access for real-time applications

Dual port operation supports concurrent access without contention

Stable operation over the full supply voltage range of 4.5V to 5.5V

Standard industrial operating temperature range

Reliable parallel interface simplifies integration with most microcontrollers and FPGAs

Application Environments

Embedded systems that need temporary, high-speed, and concurrent data handling

Industrial automation equipment

Signal and image processing hardware

Network and communication devices requiring buffer memory

General purpose electronic systems where high speed and dual port access is a necessity

Selection Guidelines

Choose this device if your design needs:

Dual port, simultaneous access SRAM

Parallel interface for fast data exchange

8Kbit memory in a compact surface mount package

Reliable operation at 5V systems

Access/cycle times not exceeding 35ns

Note: Since this model is obsolete and RoHS non-compliant, use only for maintaining legacy devices, or where compliance is not required.

Usage Considerations

Observe MSL 3 reflow guidelines and complete mounting within 168 hours after opening.

Keep within supply voltage and temperature ratings for stable operation.

Check for software/hardware compatibility because this model is obsolete and may not be supported in new designs.

Not suitable for new designs aiming for RoHS compliance.

Potential Equivalent/Replacement Models

Equivalent or alternative models include:

7140LA25PFG (may offer faster timings or improved features)

For more equivalents or possible alternatives, contact Ariat-Tech sales team directly as obsolete status may limit availability, and cross-compatibility must be verified per each specific application.

If no suitable direct replacement is available, consult Ariat-Tech sales team for up-to-date alternatives or replacement suggestions for your legacy designs.

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