ATF16V8BQ-10SC

Overview

The ATF16V8BQ-10SC is a high-performance CMOS electrically erasable programmable logic device (PLD) utilizing Atmel Flash memory technology. It features eight macrocells and operates at a maximum pin-to-pin delay of 10 ns. The device supports a 5V supply with ±5% tolerance for commercial applications (0°C to 70°C). Key electrical characteristics include a standby current of 35 mA typical and an active current of 40 mA typical. It provides 2,000V ESD protection and 200 mA latchup immunity, ensuring high reliability in standard digital logic applications.

Feature Summary

• Emulates industry-standard 20-pin PAL devices with flexible registered, complex, and simple modes.
• Advanced Flash technology enables reprogramming with 100 erase/write cycles and 20-year data retention.
• CMOS and TTL compatible inputs/outputs with integrated pull-up resistors.
• Low-power BQ variant reduces active current to 40 mA compared to the standard B series.

Applications

• Direct replacement for obsolete 16R8 and other 20-pin PAL logic families.
• Industrial control systems requiring reliable state machine initialization via power-up reset.
• Digital logic design projects needing reconfigurable combinatorial or registered outputs.

Procurement Notes

Verify that the specific ordering suffix SC corresponds to the 20-lead SOIC package as defined in the official Microchip/Atmel ATF16V8B family datasheet. Confirm the temperature range matches commercial specifications (0°C to 70°C) if industrial operation is required. Ensure programming equipment supports the Flash architecture and security fuse features described in the documentation.

Selection Notes

Select the ATF16V8BQ-10SC when system power constraints require lower active current than the standard ATF16V8B-10SC, while maintaining the same 10 ns speed grade. Choose this part over the BQL series if higher drive capability is needed, as the BQL offers lower power but different electrical characteristics. Ensure the design utilizes the 20-lead SOIC footprint and accounts for the specific pinout where Pin 1 is CLK and Pin 11 is OE in registered mode.

Part Context

This component belongs to the ATF16V8B family, which includes standard (B), low-power (BQ), and ultra-low-power (BQL) variants. All share the same logical architecture and pinouts but differ in power consumption profiles. The 'BQ' designation specifically indicates the intermediate power consumption tier, positioned between the standard B and the low-power BQL versions within the same speed and package options.

Replacement Considerations

Publicly confirmed direct substitutes include other ATF16V8B-10SC parts from the same family with identical speed and package specifications. Cross-referencing with legacy PAL devices like the GAL16V8 requires verifying mode configuration compatibility through software compilers.