ATF16V8B-15SC

Overview

The ATF16V8B-15SC is a high-performance Electrically Erasable Programmable Logic Device (EEPLD) manufactured by Microchip Technology. It utilizes advanced Flash memory technology to provide reprogrammability with 100 erase/write cycles and 20-year data retention. The device features an industry-standard architecture that emulates many 20-pin PALs, offering eight macrocells with dedicated product terms. It supports three operational modes: registered, complex, and simple, allowing flexible configuration for various logic applications. The -15 speed grade specifies a maximum pin-to-pin delay of 15 ns and a setup time of 12 ns. It operates on a 5V supply and is available in a 20-lead Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• High-speed performance with 15 ns maximum propagation delay and 45 MHz clock frequency
• Reprogrammable Flash architecture supporting 100 erase/write cycles and 20-year data retention
• Universal architecture emulating 16R8, 16L8, and other 20-pin PAL devices via software-configurable modes
• CMOS and TTL compatible inputs/outputs with internal pull-up resistors

Applications

• Direct replacement for obsolete 16R8 series and other 20-pin combinatorial PLDs
• Complex state machine implementation using registered output mode
• General-purpose logic interfacing requiring CMOS/TTL compatibility
• PCI-compliant digital logic design

Procurement Notes

Verify the package type corresponds to the 'S' suffix, indicating a 20-lead SOIC. Confirm the temperature range matches the application requirements; commercial grades operate from 0°C to 70°C, while industrial grades (-I suffix) operate from -40°C to 85°C. Ensure programming equipment supports Atmel/Microchip EEPLD formats and JEDEC file generation for the specific macrocell configuration.

Selection Notes

Select the ATF16V8B-15SC when a 15 ns speed grade is required in a surface-mount SOIC package. Choose this part over the BQ or BQL variants if higher active current consumption is acceptable in exchange for potentially different power-saving features not present in the standard B version. Verify that the 5V ±10% supply tolerance aligns with the system power design. Consider the registered mode constraints where Pin 1 and Pin 11 are permanently assigned to Clock and Output Enable functions.

Part Context

This component belongs to the ATF16V8B family of high-performance EEPLDs. It shares the same core Flash architecture and macrocell structure as the ATF16V8BQ and ATF16V8BQL but differs in power specifications and speed options. The family allows designers to replace legacy GAL and PAL devices with reprogrammable alternatives. The ATF16V8B-15SC specifically targets applications needing moderate speed in a standard SOIC footprint without the low-power standby features of the QL variant.

Replacement Considerations

Public confirmed substitute part numbers include ATF16V8B-15SI (Industrial temperature range, same SOIC package) and ATF16V8B-15PC (Commercial temperature range, PDIP package). For direct pin-compatible replacements in different packages, ATF16V8B-15JC (PLCC) is also available within the same speed grade.