ATF16V8C-7PC - 7.5ns EECMOS 16V8 PLD | Microchip
MPN: ATF16V8C-7PC ✓ ActiveATF16V8C-7PC Overview
A programmable logic device is a semiconductor whose internal logic connections are configured after manufacture. The ATF16V8C belongs to the SPLD and PLD hierarchy, where a small collection of configurable AND and OR logic resources replaces a network of individual gates. Its 16V8 organization provides eight inputs and eight outputs, with each output allocated eight product terms. This makes the device useful for compact combinational control, decoding, multiplexing, and Boolean equation implementation.
Key features include a maximum pin-to-pin delay of 7 ns for the 7 ns speed option described by the family documentation, standard-power operation, and a pin-controlled power-down option in configurations that provide the relevant control function. The manufacturer documentation also identifies the device as CMOS and TTL compatible. These characteristics make it useful where deterministic logic timing, legacy PAL pin compatibility, and electrically erasable configuration are more important than the density of an FPGA.
The ATF16V8C architecture includes three configurable operating modes selected through programming. This flexibility allows a single device to implement registered, combinatorial, or complex programmable-logic behavior, depending on the design and the selected fuse map. Its EECMOS implementation uses electrically erasable flash memory, avoiding one-time-programmable fuse limitations and allowing the same device type to be used in designs requiring configuration changes.
Typical uses include legacy PAL replacement, industrial interface decoding, control-panel logic, address decoding, product-term Boolean functions, and compact glue logic around larger processors. The 20-pin PDIP package is particularly useful for through-hole prototypes, repair assemblies, educational systems, and industrial equipment where a socketed or leaded package simplifies inspection and replacement.
Designers should verify the fuse map, power-down configuration, input and output logic levels, timing limits, and unused-pin requirements against the manufacturer datasheet before production release. PC programming can be recognized by some standard 16V8 fuse files, while extended-feature configurations may use a separate fuse format. Component marking and system requirements should therefore be checked against the exact programmed device configuration.
This page combines the verified ATF16V8C-7PC specifications, manufacturer datasheet links, distributor availability information, qualified drop-in alternatives, and practical design guidance. It also distinguishes documented electrical facts from attributes that require confirmation from a current distributor or device-specific programming record.
Drop-in alternatives for ATF16V8C-7PC — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATF16V8C-7PC (same form factor and footprint) — differing in Family Maximum Pin-to-Pin Delay, Package Pitch.
ATF16V8B-15PC
✅ Drop-InContact for price
View Datasheet →GAL16V8D-7LP
✅ Drop-In📋 Reference alternative (not in catalog)
ATF16V8C-7PC Maximum Ratings & Electrical Characteristics
| Product Type | EECMOS programmable logic device (PLD) |
| Architecture | 16V8 SPLD |
| Macrocell Count | 8 macrocells |
| Equivalent Gate Count | 300 gates |
| Propagation Delay | 7.5 ns |
| Family Maximum Pin-to-Pin Delay | 5 ns minimum offered across ATF16V8C speed options |
| Supply Voltage | 5 V |
| Industrial Supply Tolerance | 5 V ± 10% |
| Commercial Supply Tolerance | 5 V ± 5% |
| Logic Compatibility | CMOS and TTL compatible |
| Programmable Technology | Electrically erasable flash memory |
| Pin-Controlled Power-Down Current | 100 µA option |
| Input Count | 8 inputs |
| Output Count | 8 outputs |
| Product Terms per Output | 8 product terms |
| Package | 20-pin PDIP |
| Package Pitch | 0.300 in (7.62 mm) |
| Mounting Type | Through-hole |
| Configuration Modes | 3 software-configured operating modes |
ATF16V8C-7PC 0.300 in (7.62 mm) Pin Configuration Guide
Pin configuration for ATF16V8C-7PC (0.300 in (7.62 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATF16V8C-7PC.
Refer to the datasheet for full pin configuration.
Typical Applications
ATF16V8C-7PC is suitable for 6 applications: Legacy PAL Replacement, Industrial Control and Interlock Logic, Address Decoding and Peripheral Control, Test and Measurement Control, Retrofit and Through-Hole Repair, Product-Term Boolean Control.
Legacy PAL Replacement
The ATF16V8C-7PC is suitable for replacing a 20-pin PAL when the replacement must preserve the established 16V8 footprint and fuse-map approach. Its eight macrocells and eight product terms per output support the Boolean equations commonly implemented in 20-pin combinatorial and registered PLDs. The 7.5 ns propagation-delay rating also preserves more timing margin than the 10 ns ATF16V8B-10PC alternative. Before insertion, verify the original mode, pin 4 usage, output-enable behavior, supply tolerance, and programmed fuse map against the manufacturer documentation.
Industrial Control and Interlock Logic
ATF16V8C-7PC can implement compact control equations for industrial panels, interlocks, alarm logic, and actuator-command decoding. Eight inputs and eight outputs are sufficient for typical Boolean control blocks, while the electrically erasable flash-memory technology permits configuration updates without a one-time fuse program. Its 5 V CMOS and TTL-compatible interface supports integration with older industrial logic. The design must verify the exact device temperature grade, input thresholds, output drive, unused-pin treatment, and system-level timing before qualification because those details are not fully stated in the verified excerpts.
Address Decoding and Peripheral Control
The ATF16V8C-7PC can implement address decoding, chip-select generation, multiplexed control, and other compact peripheral-routing functions around a host processor. Eight product terms per output permit useful combinational equations, and the 7.5 ns delay rating can reduce propagation delay relative to the 15 ns ATF16V8B-15PC family member. For reliable decoding, include all relevant address and enable signals within the available macrocell resources, then validate setup and hold timing with the external host bus rather than relying on the propagation-delay value alone.
Test and Measurement Control
ATF16V8C-7PC can implement sequencers, mode selectors, and relay or front-panel control logic in test and measurement equipment. Its eight macrocells are appropriate for small, highly parallel Boolean control tasks where a larger FPGA would be unnecessary. The 20-pin PDIP construction also simplifies socketed prototype work and troubleshooting in laboratory or repair-oriented systems. Engineers should check output rise and fall times, fan-out requirements, input noise margin, and programming-file compatibility. The 7.5 ns device provides better timing margin than the 10 ns or 15 ns ATF16V8B alternatives.
Retrofit and Through-Hole Repair
The ATF16V8C-7PC is particularly useful for repairing or extending equipment built with 20-pin through-hole PAL devices. Its 0.300-inch PDIP pitch and eight-macrocell organization match the form factor of the legacy devices commonly socketed on older control boards. Electrically erasable flash configuration allows a replacement to be programmed without disposable fuse links, while Microchip's GAL16V8 replacement guidance supports the broader compatibility of the ATF16V8 family. A technician must still verify the fuse map and configuration mode to avoid using an electrically similar but functionally incompatible PLD.
Product-Term Boolean Control
ATF16V8C-7PC can implement compact product-term equations for signal qualification, interlock matrices, combinational encoding, and custom logic functions. The manufacturer states that the ATF16V8C architecture is a superset of generic 16V8 implementations and that each output is allocated eight product terms. This makes it a practical fit for equations whose logic depth and fan-in fit within those limits. Compile the equations with the target fuse-map mode selected, verify unused input states, and test both initialization and power-down behavior because pin-controlled power-down is an option rather than an assumption for every configuration.
Engineering reference data for ATF16V8C-7PC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATF16V8B-10PC | ATF16V8B-15PC | GAL16V8D-7LP |
|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Lattice Semiconductor |
| Product Type | EECMOS SPLD | EECMOS SPLD | EECMOS SPLD | SPLD |
| Architecture | 16V8 | 16V8 | 16V8 | 16V8 |
| Macrocell Count | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells |
| Propagation Delay | 7.5 ns | 10 ns | 15 ns | Approximately 7 ns timing class |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Input and Output Count | 8 inputs and 8 outputs | 8 inputs and 8 outputs | 8 inputs and 8 outputs | 8 inputs and 8 outputs |
| Programmable Technology | Electrically erasable flash memory | Electrically erasable flash memory | Electrically erasable flash memory | Electrically erasable PLD architecture |
Key Differentiators
- Faster speed grade than the slower ATF16V8B PDIP alternatives (vs ATF16V8B-10PC)
- Substantially faster than the 15 ns ATF16V8B option (vs ATF16V8B-15PC)
- Closest verified cross-brand timing class on the same DIP-20 format (vs GAL16V8D-7LP)
Design Notes
Do not assume that every 20-pin PAL with eight inputs and eight outputs has an identical control mode. The verified ATF16V8C documentation notes that pin 4 can be an input in applicable configurations, while some variants lack a power-down pin and JEDEC-compatible 16V8C files may be listed separately from extended 16V8CEXT files. Compare the original schematic, programmer fuse-map output, device marking, and Microchip Atmel-0425 datasheet before ordering a replacement.
Use the manufacturer's AC timing tables for the selected operating mode and supply condition rather than treating the 7.5 ns propagation-delay summary as a complete timing guarantee. Account for external setup and hold requirements, output transition behavior, and propagation-path differences among registered and combinatorial configurations. PCB traces should also avoid long unprotected routes between the PLD and external clock, enable, or feedback signals, especially in systems operating close to the device's timing limits.
The ATF16V8C-7PC uses a 20-pin PDIP package with a 0.300-inch pitch and 7.62 mm spacing. Preserve the original DIP-20 land pattern, pin-1 orientation, and socket clearance when replacing an existing device. Check whether the board uses a socket and whether the replacement program is compatible with the fuse map already loaded. For new through-hole boards, maintain conventional decoupling and grounding practices around the 5 V supply and leave accessible routing for programming or fixture access.
Power the ATF16V8C from a regulated 5 V rail and confirm the applicable tolerance, which the ATF16V8C family documentation defines as 5 V ± 10% for industrial-temperature options and 5 V ± 5% for commercial-temperature options. The family also offers a 100 µA pin-controlled power-down mode where supported. Verify whether the selected configuration actually exposes that control and account for normal active current separately when sizing the supply.
Compliance Information
The supplied verified excerpts do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for ATF16V8C-7PC. These attributes require confirmation from current Microchip product documentation or the distributor product record.
