71T75902S75BG

Overview

The IDT 71T75902S75BG is a synchronous Single Data Rate (SDR) Zero Bus Turnaround (ZBT) Static Random Access Memory (SRAM) integrated circuit. It provides an 18 Mbit memory density organized as 1 Megabit by 18 bits. The device features a maximum access time of 7.5 ns and supports a clock frequency up to 133 MHz. It operates with a 2.5V core voltage and utilizes a 119-pin Plastic Ball Grid Array (PBGA) package measuring 14x22 mm.

Feature Summary

• Supports high-performance system speeds through Zero Bus Turnaround architecture, eliminating dead cycles between write and read operations.
• Features internally synchronized output buffer enable to simplify control logic requirements.
• Utilizes positive clock-edge triggered address, data, and control signal registers for fully pipelined applications.
• Includes individual byte write control capabilities for precise data management.

Applications

• High-speed networking equipment requiring low-latency buffering
• Telecommunications systems utilizing parallel interface memory
• Industrial automation controllers needing fast data access

Procurement Notes

Verify component authenticity due to potential lead-based composition and RoHS non-compliance status. Confirm package integrity upon receipt, as the PBGA form factor requires specific handling protocols. Ensure compatibility with existing 2.5V power supply designs before integration into final assemblies.

Selection Notes

Select this model when a 1M x 18 organization is required with sub-8ns access times. Compare against the S85 variant if slightly slower speeds are acceptable for cost optimization. Ensure the PCB layout accommodates the 119-ball BGA footprint and thermal dissipation needs associated with synchronous SRAM devices.

Part Context

This component belongs to the IDT 71T75902 series of synchronous ZBT SRAMs. It shares architectural similarities with other members like the 71T75902S85BG but offers faster timing specifications. The series is designed for applications demanding high throughput without bus turnaround penalties.

Replacement Considerations

The 71T75902S85BG serves as a compatible alternative with identical pinout and functionality but features an 8.5 ns access time. Verify that the system timing constraints accommodate the slight speed difference before substitution.