LC4128C-75T128I

Complex Programmable Logic Devices Overview

The LC4128C-75T128I is a Complex Programmable Logic Device (CPLD) from the ispMACH 4000C family, manufactured by Lattice Semiconductor. It features 128 macrocells and operates within a commercial temperature range of 0°C to 90°C junction temperature. The device supports system-in-programmability via EEPROM technology and includes JTAG boundary scan capabilities. It utilizes a 128-pin Thin Quad Flat Package (TQFP) with dimensions of 14 mm in length. Key electrical specifications include a maximum operating frequency of 111 MHz and support for up to four global clock pins.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with 80 Product Terms per output
• System-In-Programmable (ISP) EEPROM architecture
• JTAG Boundary Scan (BST) support
• 128-pin TQFP package

Complex Programmable Logic Devices Applications

• High-density programmable logic applications
• Interface bridging and protocol conversion
• State machine implementation
• Address decoding and control logic

Complex Programmable Logic Devices Procurement Notes

Verify the suffix 'I' indicates the industrial temperature grade (-40°C to +105°C) rather than the commercial grade listed in some conflicting database entries. Confirm RoHS compliance status as datasheets may vary by production batch. Ensure the specific package variant matches the required PCB footprint for the 128-pin TQFP form factor.

Complex Programmable Logic Devices Selection Notes

Select this component when 128 macrocells are sufficient for the design logic density requirements. The 75 speed grade offers a balance between performance and power consumption suitable for general-purpose digital logic. Consider the 128-pin package availability if pin count constraints allow for larger footprints compared to smaller QFP or BGA options.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000C family, which provides high-performance CPLD solutions. It shares architectural similarities with the 4000B and 4000Z families but is optimized for specific voltage and performance characteristics. The 4000C series is designed for applications requiring reliable, non-volatile configuration with low static power consumption.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other members of the ispMACH 4000 family such as the LC4128B or LC4128Z variants, provided pin compatibility and electrical specifications align. Verify that alternative packages maintain the same I/O count and macrocell density.