ATF16V8B-10PI

Overview

The ATF16V8B-10PI is a high-performance CMOS electrically-erasable programmable logic device (PLD) manufactured by Microchip Technology. It utilizes Flash memory technology and features an industry-standard architecture that emulates many 20-pin PALs. The device provides eight macrocells, each with eight product terms, supporting registered, complex, or simple modes of operation. It operates at a maximum propagation delay of 10 ns and supports clock frequencies up to 50 MHz. The component is housed in a 20-lead Plastic Dual Inline Package (PDIP) and functions within the industrial temperature range of -40°C to +85°C.

Feature Summary

• High-speed Electrically-Erasable Flash PLD with 7.5 ns to 25 ns speed grades
• Eight configurable macrocells with eight product terms per macrocell
• Three operational modes: Registered, Complex, and Simple for PAL emulation
• CMOS and TTL compatible inputs and outputs with internal pull-up resistors

Applications

• Direct replacement for 16R8 family and most 20-pin combinatorial PLDs
• Implementation of state machines using registered output mode
• Combinatorial logic applications requiring output enable control
• General-purpose digital logic design utilizing standard pinouts

Procurement Notes

Verify the package code 'P' corresponds to the 20-lead PDIP format and the suffix 'I' indicates the industrial temperature range (-40°C to +85°C). Confirm the speed grade '10' aligns with the required 10 ns maximum propagation delay specifications. Ensure programming equipment supports the specific Flash memory architecture and JEDEC file generation for this device family.

Selection Notes

Select the ATF16V8B-10PI when an industrial temperature rating is required alongside a 10 ns timing specification. Choose this part over commercial variants if the application environment exceeds 70°C. Consider the Registered mode if flip-flops are needed for state storage, or the Complex/Simple modes for purely combinational logic without output enable constraints on all pins.

Part Context

This component belongs to the ATF16V8B family of high-performance EE PLDs. Other members include the BQ and BQL low-power variants and different speed grades such as -15 and -25. The family shares a universal architecture capable of emulating various legacy PAL devices through software compiler configuration.

Replacement Considerations

The datasheet notes that commercial products can be used in industrial ranges by downgrading one speed grade (e.g., using a 7 ns 'C' device for a 10 ns 'I' requirement) and de-rating power by 30%. Direct functional replacements include other 20-pin PAL-compatible PLDs from the same architectural subset.