ATF20V8B-7JC

Overview

The ATF20V8B-7JC is a high-performance Electrically-Erasable Programmable Logic Device (EE PLD) manufactured by Microchip Technology. It features 8 macrocells and operates at a maximum pin-to-pin delay of 7.5 ns. The device utilizes advanced Flash technology for reprogrammability and offers multiple power-saving options, including standby currents as low as 5 mA in specific variants. It supports CMOS and TTL compatible inputs and outputs with internal pull-up resistors. The component is housed in a 28-lead Plastic J-leaded Chip Carrier (PLCC) package and is rated for commercial temperature ranges from 0°C to 70°C.

Feature Summary

• High-speed performance with 7.5 ns maximum pin-to-pin delay
• Reprogrammable Flash memory with 100 erase/write cycles and 20-year data retention
• Emulates industry-standard 24-pin PAL architectures
• CMOS and TTL compatible I/O with internal pull-up resistors

Applications

• Direct replacement for 20R8 family and other 24-pin combinatorial PLDs
• Complex logic function realization in digital systems
• State machine initialization requiring registered output modes

Procurement Notes

Verify the ordering suffix 'JC' corresponds to the 28-lead PLCC package and Commercial temperature range (0°C to 70°C). Confirm that the 7 ns speed grade meets system timing requirements, noting that using commercial products in industrial environments requires downgrading one speed grade and de-rating power by 30%. Ensure programming hardware supports the specified EE PLD architecture.

Selection Notes

Select this part when an 8-macrocell PLD with 7.5 ns propagation delay is required in a surface-mount PLCC package. Choose the 'C' suffix variant for commercial applications within 0°C to 70°C. For industrial temperatures (-40°C to 85°C), consider the 'I' suffix version or apply the specified derating guidelines if using the commercial grade. Verify compatibility with existing PLD compilers for mode selection (Registered, Complex, or Simple).

Part Context

The ATF20V8B series belongs to Atmel's (now Microchip) high-performance EE PLD family. This specific model represents the fastest speed grade (7 ns) available in the standard ATF20V8B line. It serves as a superset architecture capable of emulating various legacy PAL devices, providing flexibility for design upgrades without changing physical footprints significantly.

Replacement Considerations

The ATF20V8B-7JC can directly replace many 24-pin PALs such as the 20R8, 20RP8, 20R6, and 20RP8 families. It also supports emulation of 20L8, 20H8, 20P8, and simple PALs like 14L8, 16L6, and 18L4 depending on the compiler mode selected.