ATF16V8C-7PC

Overview

The ATF16V8C-7PC is a high-performance electrically erasable CMOS programmable logic device (PLD) manufactured by Microchip Technology. It utilizes EE Flash memory technology and features an industry-standard architecture that emulates many 20-pin PALs. The device offers a maximum pin-to-pin propagation delay of 7 ns, with a clock-to-output delay of 5 ns. It operates within a commercial temperature range of 0°C to 70°C at a supply voltage of 5V ± 5%. Key features include a low-power pin-controlled power-down mode consuming less than 100μA, CMOS/TTL compatible I/O with pin-keeper circuits, and 200mA latchup immunity.

Feature Summary

• Industry-standard 20-pin PLD architecture emulating 16R8/16L8 families
• 7 ns maximum pin-to-pin delay with 100 μA power-down current
• CMOS and TTL compatible inputs with internal pin-keeper circuits
• Reprogrammable via EE Flash memory with 20-year data retention

Applications

• Direct replacement for legacy 20-pin PAL devices
• Complex combinatorial and registered logic functions
• Low-power embedded control systems requiring pin-controlled sleep modes

Procurement Notes

Verify the package type corresponds to the 'PC' suffix, indicating a 20-lead Plastic Gull-Wing Small Outline (SOIC) package. Confirm the speed grade matches the 7 ns requirement for the specific application timing constraints. Ensure the design file specifies the power-down option if the 100 μA standby current is required, as this affects pin 4 functionality.

Selection Notes

Select the ATF16V8C-7PC when a 7 ns delay is sufficient for the target frequency, which supports up to approximately 125 MHz in no-feedback configurations. Choose this part over the -5 variant if cost or availability favors the slower speed grade. Verify that the SOIC package fits the PCB footprint, as other variants like -7JU use PLCC packages.

Part Context

This component belongs to the ATF16V8C family of Electrically Erasable Programmable Logic Devices. It is designed to replace older GAL and PAL technologies while offering reprogrammability. The 'C' designation indicates a commercial temperature range device, distinct from the industrial 'I' variants which support -40°C to +85°C.

Replacement Considerations

The ATF16V8C-7PC can directly replace standard 16L8, 16H8, and 16P8 PALs in complex mode. In registered mode, it substitutes 16R8 and 16RP8 devices. Designers must ensure the programming software is configured for the correct macrocell mode to match the original PAL's behavior.