ATF16V8B-15PI

Overview

The ATF16V8B-15PI is a high-performance CMOS electrically erasable programmable logic device (PLD) manufactured by Microchip Technology. It utilizes Atmel’s Flash memory technology and features an industry-standard architecture that emulates many 20-pin PALs. The device includes eight macrocells, each with eight product terms, supporting registered, complex, and simple modes of operation. It operates at a maximum pin-to-pin delay of 15 ns with a typical standby current of 50 mA. Designed for industrial applications, it functions within a temperature range of -40°C to +85°C using a 5V ± 10% power supply.

Feature Summary

• High-speed performance with a maximum 15 ns pin-to-pin propagation delay.
• Reprogrammable via standard PLD programmers with 100 erase/write cycles and 20-year data retention.
• CMOS and TTL compatible inputs/outputs with internal pull-up resistors.
• Robust protection including 2,000V ESD tolerance and 200 mA latchup immunity.

Applications

• Direct replacement for 16R8 family and other 20-pin combinatorial PLDs.
• Industrial control systems requiring reconfigurable logic.
• State machine initialization utilizing power-up reset features.

Procurement Notes

Verify the package type corresponds to the 'P' suffix, indicating a 20-lead Plastic Dual Inline Package (PDIP). Confirm the 'I' suffix denotes the Industrial temperature range (-40°C to +85°C). Ensure programming hardware supports the specific Flash memory architecture of the ATF16V8B series.

Selection Notes

Select this component when a direct architectural substitute for legacy 20-pin PAL devices is required. The 15 ns speed grade offers a balance between performance and power consumption compared to faster or lower-power variants. Verify that the application requires the specific I/O count and macrocell configuration provided by this part number.

Part Context

This device belongs to the ATF16V8B series, which also includes low-power variants like the ATF16V8BQ and ATF16V8BQL. While the base ATF16V8B draws higher current, the BQL variant reduces standby current significantly. All variants share the same 20-pin footprint and logical architecture, differing primarily in power specifications and speed grades.

Replacement Considerations

The ATF16V8B-15PI can directly replace GAL16V8, G16V8, and P16V8 devices when configured appropriately. For legacy replacements, ensure the target PAL device's JEDEC file is available for download to configure the ATF16V8B into the corresponding emulation mode.