ATF750LVC-15SU

Complex Programmable Logic Devices Overview

The ATF750LVC-15SU is a high-speed, electrically-erasable complex programmable logic device (CPLD) from the Atmel 750 architecture family. It operates within a 3.0V to 5.5V supply range and features a 24-lead SOIC package. The device provides 12 dedicated inputs, 10 I/O pins, and 20 flip-flops with 171 total product terms. Maximum pin-to-pin propagation delay is 15 ns at 3V operation and 10 ns at 5V operation. It supports D- or T-type flip-flops, individual clocking, and programmable pin-keeper circuits for bus-friendly designs.

Complex Programmable Logic Devices Feature Summary

• Superset of 22V10 architecture with enhanced logic flexibility and 171 total product terms.
• Maximum 15 ns pin-to-pin delay at 3V operation; 10 ns at 5V operation.
• Configurable D- or T-type flip-flops with independent asynchronous resets and synchronous presets.
• Programmable pin-keeper circuits eliminate external pull-up resistors for unused inputs.

Complex Programmable Logic Devices Applications

• Complex state machine implementation
• Bus interface logic
• Address decoding
• Glue logic replacement

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'SU' corresponds to the 24-lead Plastic Gull Wing Small Outline (SOIC) package as defined in the ordering information table. Confirm that the -15 speed grade matches the required 15 ns maximum delay specifications for the target voltage conditions. Ensure the design accounts for the Industrial temperature range (-40°C to +85°C) associated with this part number.

Complex Programmable Logic Devices Selection Notes

Select this component when a 24-pin CPLD with higher density than standard 22V10 devices is required. The ATF750LVC offers 20 flip-flops and 171 product terms, allowing for more complex logic in a small footprint. Consider the -15 speed grade if system timing requires a maximum 15 ns delay at 3V or 10 ns at 5V. Verify compatibility with existing Atmel 750 software tools like Synario or WinCupl.

Complex Programmable Logic Devices Part Context

The ATF750LVC belongs to the Atmel 750 series of electrically-erasable PLDs. This architecture is designed to be twice as powerful as other 24-pin programmable logic devices by providing increased product terms, sum terms, and flip-flops. It is architecturally compatible with the ATV750B series and shares hardware/software compatibility with previous Atmel CPLD families.

Complex Programmable Logic Devices Replacement Considerations

Direct functional replacements include other parts from the ATF750LVC series with different speed grades or packages, such as ATF750LVC-15JU (PLCC) or ATF750LVC-15PU (PDIP). For legacy 22V10 applications, this device serves as an enhanced superset. No cross-manufacturer direct pin-compatible substitutes are documented in the provided datasheet.

Complex Programmable Logic Devices FAQ

What is the maximum operating frequency?

The maximum frequency depends on the feedback configuration. With no feedback, fMAX is 71 MHz at 5V and 83 MHz at 3V. With internal feedback, it is 62 MHz at 5V and 80 MHz at 3V.

How many flip-flops does the device contain?

The ATF750LVC contains 20 flip-flops. Each flip-flop can be individually configured as either D-type or T-type and has its own sum term, reset term, and clock term.

What is the function of the pin-keeper circuit?

The programmable pin-keeper circuit holds floating input or I/O pins at their previous logic level (high or low). This prevents unnecessary power consumption and system noise caused by intermediate voltage levels, eliminating the need for external pull-up resistors.