ATF16V8C-7JC - 7.5ns 16V8 EECMOS PLD | Microchip
部品番号: ATF16V8C-7JC ✓ 生産中ATF16V8C-7JC 概要
A programmable logic device, or PLD, is a semiconductor whose internal logic connections can be configured after manufacture. The ATF16V8C belongs to the broader hierarchy of programmable logic ICs, CPLDs, and digital logic semiconductors. Its 16V8 architecture combines 16 inputs and 8 outputs with eight configurable macrocells. The manufacturer datasheet states that the architecture emulates many 20-pin PAL devices and most 20-pin combinatorial PLDs, making it useful for consolidating several fixed-logic functions into one programmable component.
Key device features include a maximum pin-to-pin delay of 5 ns in the broader ATF16V8C family, the 7.5 ns speed grade represented by ATF16V8C-7JC, and an optional pin-controlled power-down function that can reduce total supply current below 100 µA. The device supports CMOS and TTL-compatible interfacing. Speed options extend down to 5 ns, while the ATF16V8C-7JC specifically occupies the 7 ns speed designation associated with the distributor listing.
The ATF16V8C uses a superset of generic 16R8 architectures and provides eight product terms per output through its eight macrocells. Software automatically configures the operating mode for combinational, registered, or mixed logic functions. This architecture allows each output to implement equations with multiple product terms while retaining the software-oriented design flow associated with 20-pin PAL-compatible logic.
Typical uses include industrial control-interface decoding, address and command decoding, legacy peripheral glue logic, product-term Boolean equations, and timing-sensitive control logic where a 7.5 ns device is preferable to slower general-purpose programmable logic. The electrically erasable memory allows the configuration to be reprogrammed during development or field updates without replacing the device.
The principal design consideration is voltage and timing compatibility with the existing board. The manufacturer describes industrial-range operation over 5 V ±10% and commercial-range operation over 5 V ±5%, subject to the relevant speed-grade and temperature qualification. Designers should also confirm whether pin 4 is assigned to the optional power-down function before treating it as an ordinary logic input.
This page consolidates verified manufacturer and distributor information, distinguishes verified same-package alternatives from non-drop-in package variants, and adds practical comparison and design guidance that is not presented as raw datasheet specification data.
ドロップイン代替品: ATF16V8C-7JC — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
ATF16V8C-7JU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATF16V8B-7JC
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATF16V8C-7JC 最大定格＆電気的特性
| Device Type | 16V8 electrically erasable programmable logic device (PLD) |
| Architecture | EECMOS |
| Configuration Memory Technology | Electrically erasable flash memory |
| Number of Macrocells | 8 macrocells |
| Input Count | 16 inputs |
| Output Count | 8 outputs |
| Product Terms per Output | 8 product terms |
| Target Propagation Delay | 7.5 ns |
| Maximum Pin-to-Pin Delay for ATF16V8C Family | 5 ns |
| 電源電圧 | 5 V ±10% for industrial range; 5 V ±5% for commercial range |
| Power-Down Supply Current | <100 µA when pin-controlled power-down is enabled |
| Logic Compatibility | CMOS and TTL compatible |
| パッケージ | 20-pin PLCC (9x9 mm) |
| 実装タイプ | Through-hole |
| Power Class | Standard power |
| Operating Temperature Grade | Industrial grade |
ATF16V8C-7JC 20-pin plcc (9x9 mm) ピン配置ガイド
ATF16V8C-7JC (20-pin plcc (9x9 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATF16V8C-7JC.
詳細は データシート をご参照ください。
主な用途
ATF16V8C-7JC の用途: 6 件s: Industrial Control-Signal Decoding, Legacy Peripheral Interface Consolidation, Product-Term Boolean Logic, Timing-Sensitive Command Decoding, Low-Power Standby Control, Prototype and Legacy-System Modernization.
Industrial Control-Signal Decoding
The ATF16V8C-7JC fits industrial control boards that decode limit switches, interlocks, selector positions, and alarm signals into internal control commands. Its eight macrocells and eight product terms per output provide substantially more Boolean flexibility than a bank of basic gates, while the 7.5 ns propagation delay supports faster control-loop qualification than a general-purpose low-speed PLD. The electrically erasable EECMOS configuration also allows firmware or production-test revisions without changing the PCB. Before deployment, verify industrial temperature coverage and 5 V ±10% operating limits from the manufacturer datasheet.
おすすめ
Legacy Peripheral Interface Consolidation
ATF16V8C-7JC is useful for consolidating address decode, command qualification, chip-select generation, and interface-state machines around legacy peripherals. Its 16 inputs and eight outputs allow multiple Boolean conditions to be combined without consuming an equivalent number of separate gate packages, and its PAL-compatible architecture simplifies migration from older 20-pin PLDs. The 7.5 ns device timing also leaves more margin for combinational interface paths than slower PLD grades. Engineers should verify the original peripheral's active-high or active-low conventions and recreate the JEDEC-compatible timing behavior in the PLD equations.
おすすめ
Product-Term Boolean Logic
The ATF16V8C-7JC is appropriate when a design consists of several multi-input Boolean functions that would otherwise require large gate counts. Each of its eight outputs receives eight product terms, allowing implementable equations to combine many inputs and feedback paths in a compact PLCC device. This is especially valuable in transitional products where a custom ASIC would be uneconomic but the logic remains too specialized for a general-purpose microcontroller. The device's electrically erasable memory supports iterative design changes, and the 7.5 ns grade provides useful timing margin for board-level interconnect and peripheral delays.
おすすめ
Timing-Sensitive Command Decoding
The ATF16V8C-7JC can implement registered and combinational command-decoding paths where propagation delay affects bus acceptance or control latency. With a 7.5 ns stated delay, it provides a higher timing margin than legacy 10 ns or slower PAL-compatible grades. The eight macrocells are sufficient for qualified command recognition, output strobe generation, and state-transition decoding in compact legacy systems. Because PLD propagation delay is not identical to the system setup or hold requirements, designers should build a board-level timing budget and confirm output polarity against the original schematic before release.
おすすめ
Low-Power Standby Control
ATF16V8C-7JC is suitable for systems that need to retain configurable logic while reducing current during an inactive state. The manufacturer datasheet states that pin 4 may be configured as the power-down pin; when enabled and driven high, total current consumption drops below 100 µA while output data and internal logic states are latched and held. This feature can preserve control state and simplify wake sequencing. The implementation must account for the pin's alternate use as a normal logic input or output, and verification should include the configured supply range and temperature range required by the finished equipment.
おすすめ
Prototype and Legacy-System Modernization
ATF16V8C-7JC supports modernization of equipment built around 20-pin PAL-compatible logic. The EECMOS architecture emulates many 20-pin PALs and most 20-pin combinatorial PLDs, allowing a consolidated programmable part to replace several fixed-logic devices. Electrically erasable memory is valuable when a machine must be updated without replacing the assembled board, while the 7.5 ns speed grade can improve timing headroom over older slow PAL devices. Migration still requires a pin-by-pin comparison, logic equation conversion, and verification of power-up, power-down, and output-polarity behavior.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATF16V8C-7JC — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATF16V8C-7JU | ATF16V8B-7JC |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-PLCC (9x9) | 20-PLCC (9x9) - same package | 20-PLCC (9x9) - same package family |
| Device Type | 16V8 EECMOS programmable logic device | 16V8 ATF16V8C-family programmable logic device | ATF16V8B-family programmable logic device |
| Macrocells | 8 macrocells | 8 macrocells | 8 macrocells |
| Propagation Delay | 7.5 ns | 7.5 ns | 7 ns |
| Architecture | EECMOS with electrically erasable flash memory | ATF16V8C EECMOS family | ATF16V8B architecture |
| Input/Output Organization | 16 inputs and 8 outputs | 16V8 organization | 16V8 organization |
| Power Class | Standard power | Standard power | Standard power |
主な差別化要因
- Direct 7.5 ns replacement candidate in the same PLCC footprint （vs ATF16V8C-7JU)
- EECMOS configuration and programmable power-down （vs ATF16V8B-7JC)
- PAL-compatible logic consolidation （vs ATF16V8C-7XC)
設計ノート
Do not treat every 20-pin PAL as a drop-in match for the ATF16V8C-7JC. The manufacturer describes the ATF16V8C architecture as a superset of generic 16R8 architectures that can emulate many 20-pin PALs, but output polarity, feedback assignments, pin 4 power-down use, and timing must still be compared. Convert the original equations, reproduce registered or combinational behavior, and verify every output state before substituting the device.
Use the manufacturer family limits of 5 V ±10% for industrial-range parts and 5 V ±5% for commercial-range parts when designing the supply rail. If pin-controlled power-down is required, reserve pin 4 for that function and drive it to the documented inactive state. The resulting current can fall below 100 µA, but outputs remain latched, so software and hardware must not assume that internal combinational activity continues while the device is powered down.
Keep the 20-PLCC footprint unchanged when sourcing ATF16V8C-7JU or evaluating ATF16V8B-7JC, and verify the exact pin numbering against the manufacturer package drawing. Do not substitute ATF16V8C-7XC on the existing board because its verified package is 20-TSSOP. A TSSOP-to-PLCC migration requires a new PCB footprint, different assembly method, and complete signal-integrity review.
Timing validation must include external setup, hold, propagation, and board-delay requirements rather than relying on the 7.5 ns device rating alone. The ATF16V8C-7JC is intended for faster legacy logic than a 10 ns-class PAL, but it is not a substitute for a full timing closure process. Simulate worst-case equations, include peripheral delays, and test output polarity and registered-mode transitions across the intended supply and temperature ranges.
コンプライアンス情報
The supplied verified sources do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because this is a programmable logic IC rather than an automotive-qualified device in the supplied data.
