ATF16V8C-7XC

Overview

The ATF16V8C-7XC is a high-performance electrically-erasable programmable logic device (EE PLD) manufactured by Microchip Technology, formerly Atmel. It utilizes advanced flash technology for reprogrammability and offers a maximum pin-to-pin delay of 7.5ns. The component features eight outputs with eight product terms each and supports a pin-controlled power-down mode reducing supply current to under 100μA. It operates within the commercial temperature range of 0°C to 70°C and is housed in a 20-lead Plastic Thin Shrink Small Outline (TSSOP) package.

Feature Summary

• High-speed EE PLD architecture with 7.5ns max pin-to-pin delay
• Pin-controlled power-down mode reduces current to <100μA
• CMOS/TTL compatible inputs/outputs with internal pin-keeper circuits
• Reprogrammable via Flash memory with 100 erase/write cycles

Applications

• Replacement for industry-standard 20-pin PAL devices
• Complex digital logic implementation in embedded systems
• State machine initialization and control logic
• Low-power applications requiring configurable I/O

Procurement Notes

Verify that the ordering suffix 'X' corresponds to the 20-lead TSSOP package as specified in the datasheet. Confirm the 'C' designation indicates the commercial temperature range (0°C to 70°C). Ensure compatibility with programming tools supporting JEDEC-compatible 16V8C fuse files or extended feature sets if power-down functionality is required.

Selection Notes

Select this model when a 7.5ns propagation delay is sufficient for the application timing requirements. Choose the TSSOP package (suffix X) for surface-mount assembly needs. Consider the power-down feature if system energy efficiency is critical; otherwise, Pin 4 can be utilized as a standard logic input. Ensure the design compiler supports the specific macrocell configuration modes required.

Part Context

This component belongs to the ATF16V8C family of Electrically-Erasable Programmable Logic Devices. It serves as a direct replacement for various 16R8, 16L8, and other 20-pin PAL architectures. The 'C' variant denotes commercial grade operation, while the 'X' suffix identifies the TSSOP packaging option. It shares architectural similarities with other members of the ATF16V8 series but differs in speed grades and physical form factors.

Replacement Considerations

Direct replacements include other ATF16V8C variants with different speed grades or packages, such as ATF16V8C-7JC (PLCC) or ATF16V8C-7PC (PDIP), provided the package footprint is adaptable. For legacy PAL replacements, ensure the target device supports the same number of inputs, outputs, and product terms.