TIBPAL20X4-20CNT

Overview

The TIBPAL20X4-20CNT is a Simple Programmable Logic Device (SPLD) from Texas Instruments, belonging to the Impact-X PAL family. It features a high-performance architecture with a maximum operating frequency of 125 MHz and a typical propagation delay of 20 ns. The device operates within a supply voltage range of 4.75 V to 5.5 V and consumes approximately 210 mA of working current. Designed for through-hole mounting, it is housed in a 24-pin PDIP package and supports an industrial temperature range from 0°C to +75°C.

Feature Summary

• High-speed performance with 125 MHz max frequency and 20 ns propagation delay
• Impact-X PAL architecture for complex logic implementation
• Standard 5V operation with 4.75V to 5.5V tolerance
• Through-hole PDIP-24 packaging for robust board integration

Applications

• Complex glue logic interfacing between microprocessors and peripheral devices
• Address decoding and memory selection circuits
• State machine implementation in industrial control systems
• Signal buffering and protocol conversion tasks

Procurement Notes

Verify component authenticity due to potential availability issues as this series may be discontinued or limited in stock. Confirm RoHS compliance status specifically for the CNT suffix variant. Check for lead-free certification if required by local regulations. Ensure storage conditions maintain moisture sensitivity levels appropriate for ceramic/plastic DIP packages.

Selection Notes

Select the TIBPAL20X4-20CNT when higher speed than standard PALs is required, specifically needing 20 ns delay. Compare against TIBPAL20L8 variants if fewer outputs are sufficient. Consider thermal dissipation requirements given the 210 mA current draw. Verify pin compatibility with existing PCB footprints before finalizing the design choice.

Part Context

This part belongs to Texas Instruments' Impact-X line of programmable logic devices, designed to replace older TTL/LS logic families with reconfigurable solutions. The TIBPAL series offers field-programmability, allowing design updates without hardware changes. It sits alongside other SPLDs like the GAL and EPM series but utilizes TI's specific PAL architecture for optimized performance.

Replacement Considerations

Direct replacements include the TIBPAL20L8-5CNT for faster switching or TIBPAL20R4-25CNT for registered outputs. Generic equivalents such as Lattice GAL16V8 or Atmel ATF16V8 may require logic restructuring. Verify electrical characteristics and pinout compatibility before substituting.