ATF16V8BQL-15XU

Overview

The ATF16V8BQL-15XU is a high-performance CMOS Electrically-Erasable Programmable Logic Device (EE PLD) manufactured by Microchip Technology. It utilizes Atmel Flash memory technology and features an industry-standard architecture compatible with 20-pin PALs. The device operates at a maximum pin-to-pin delay of 15 ns with a supply voltage of 5.0V ± 10%. It includes 8 macrocells, 10 inputs, and 8 I/O pins. Key electrical characteristics include a typical standby current of 5 mA due to automatic Input Transition Detection (ITD) circuitry, 2000V ESD protection, and 200mA latchup immunity. It supports industrial temperature ranges (-40°C to +85°C) and offers 100 erase/write cycles with 20-year data retention.

Feature Summary

• Automatic low-power standby mode (5 mA typical) via Input Transition Detection (ITD)
• Reprogrammable Flash memory with 100 erase/write cycles and 20-year data retention
• Compatible with CMOS and TTL logic levels, featuring internal pull-up resistors
• Supports Registered, Complex, and Simple modes for emulating various 20-pin PAL devices

Applications

• Industrial control systems requiring reprogrammable logic
• Replacement for legacy 20-pin PAL devices in existing designs
• PCI-compliant interface logic
• State machine initialization and complex combinational logic functions

Procurement Notes

Verify the ordering suffix 'XU' corresponds to the 20-lead TSSOP package as defined in the official Microchip datasheet. Confirm that the specific revision of the component meets RoHS compliance requirements if applicable to the target assembly process. Ensure programming equipment supports the ATF16V8BQL family specifications.

Selection Notes

Select this variant when a surface-mount TSSOP package is required instead of through-hole options. The 'QL' suffix indicates the inclusion of automatic power-down features not present in the standard ATF16V8B series. Verify that the 15 ns speed grade meets the timing constraints of the application, particularly regarding setup times and clock frequencies up to 45 MHz.

Part Context

This component belongs to the ATF16V8B(QL) family of SPLDs. The 'QL' designation specifically denotes the low-power variant with ITD functionality. The 'XU' suffix identifies the 20-lead Thin Shrink Small Outline Package (TSSOP). This part serves as a direct architectural replacement for older PAL families like the 16R8, 16L8, and 16H8 series.

Replacement Considerations

Direct architectural replacements include other ATF16V8BQL variants with different packages (e.g., ATF16V8BQL-15PU for PDIP or ATF16V8BQL-15JU for PLCC). For non-low-power applications, the standard ATF16V8B-15XU may be considered if automatic standby is not required.