MT48LC4M16A2TG-75 L:G

Memory IC Overview

The MT48LC4M16A2TG-75 L:G is a Micron Technology Synchronous DRAM with a density of 64 Megabits, organized as 4 Meg x 16 across four internal banks. It operates at a maximum clock frequency of 133 MHz with a cycle time of 7.5 ns and an access time of 5.4 ns. The device utilizes a 54-pin TSOP II plastic package and requires a single +3.3V ±0.3V power supply. It supports standard and low-power self-refresh modes, programmable burst lengths of 1, 2, 4, or 8, and features LVTTL-compatible inputs and outputs.

Memory IC Feature Summary

• Fully synchronous interface with all signals registered on the positive edge of the system clock
• Internal pipelined architecture allowing column address changes every clock cycle for high-speed random access
• Four internal banks enable concurrent operation to hide row access and precharge times
• Supports auto precharge, auto refresh, and self-refresh modes including low-power options

Memory IC Applications

• High-performance personal computer memory systems
• Graphics cards requiring fast data throughput
• Embedded systems utilizing PC100/PC133 compliant architectures
• Consumer electronics with 3.3V logic requirements

Memory IC Procurement Notes

Verify the specific suffix 'L' indicates Low Power Self Refresh mode and ':G' denotes the die revision when sourcing replacements. Confirm the '-75' timing grade matches the target system's 133 MHz clock requirement. Ensure the 54-pin TSOP II package dimensions align with the PCB footprint. Check RoHS compliance status if required by local regulations, noting that lead-free variants may have different suffixes.

Memory IC Selection Notes

Select this component for designs requiring a 16-bit data bus width and 64Mb capacity within a compact TSOP package. The -75 speed grade is suitable for systems operating up to 133 MHz. Consider the low-power self-refresh feature for battery-operated applications where standby current reduction is critical. Ensure the controller supports the necessary CAS latency settings for optimal performance at the selected clock frequency.

Memory IC Part Context

This part belongs to Micron's 64Mb SDRAM family, which includes x4, x8, and x16 configurations. The MT48LC4M16A2 series is designed for general-purpose synchronous dynamic random-access memory applications. It shares architectural similarities with other parts in the MT48LCxxxA2 series, differing primarily in organization and pin usage for the specific data width.

Memory IC Replacement Considerations

Compatible substitutes include the MT48LC4M16A2P-75 (Lead-free TSOP) and MT48LC4M16A2-7E (faster timing grade). Verify pin compatibility and electrical characteristics before substitution.

Memory IC FAQ

What does the 'L' suffix indicate in the part number?

The 'L' suffix indicates that the device supports Low Power Self Refresh mode.

How many internal banks does this SDRAM contain?

The device contains four independent internal banks to allow for interleaved operations.

What is the supported voltage range for VDD?

The device operates with a single +3.3V ±0.3V power supply.