LC4128C-75T100I

Complex Programmable Logic Devices Overview

The LC4128C-75T100I is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000C family, manufactured by Lattice Semiconductor. It features 128 macrocells and supports system-in-programmability for flexible logic implementation. The device operates with supply voltages of 3.3V, 2.5V, or 1.8V and utilizes a 100-pin Thin Quad Flat Package (TQFP). Key electrical specifications include a maximum operating frequency (fMAX) of up to 400 MHz and a propagation delay (tPD) of 2.5 ns. It includes four global clock pins with programmable polarity control and supports JTAG boundary scan testing.

Complex Programmable Logic Devices Feature Summary

• High-performance architecture with fMAX up to 400 MHz and tPD of 2.5 ns
• 128 macrocells with up to 80 product terms per output
• Supports 3.3V, 2.5V, and 1.8V I/O standards
• System-in-programmable via ISP interface

Complex Programmable Logic Devices Applications

• High-density logic replacement in industrial control systems
• Interface bridging between different voltage domains
• State machine implementation in communication protocols
• Address decoding and bus buffering in embedded systems

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'T100I' corresponds to the 100-pin TQFP package and Industrial temperature range (-40°C to +85°C or +105°C depending on exact datasheet revision). Confirm RoHS compliance status as older C-family variants may have leaded options. Ensure programming tools such as the ispDOWNLOAD cable are compatible with the ispMACH 4000C series for configuration.

Complex Programmable Logic Devices Selection Notes

Select this component when 128 macrocells are sufficient for the design logic requirements. Compare against the LC4128Z series if lower power consumption at 1.8V is critical, as the Z family offers optimized low-voltage performance. Verify that the 100-pin TQFP footprint fits the PCB layout constraints compared to larger packages like the 128-pin TQFP or BGA options available in the same family.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000C family, which provides high-density PLD capabilities within a compact form factor. It serves as a successor to earlier ispMACH 4000A/B devices, offering improved speed and flexibility. The C-series is designed for applications requiring reliable, reprogrammable logic with support for multiple voltage levels, making it suitable for mixed-signal environments.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements within the same package include other LC4128C variants with different speed grades (e.g., -10) or temperature ranges. For functional equivalents with potentially lower power, consider the LC4128Z series, though verification of pin compatibility and timing parameters is required.