ATF16V8B-15PC - 15 ns 250-Gate EEPLD | Microchip Technology
部品番号: ATF16V8B-15PC ✓ 生産中ATF16V8B-15PC 概要
An EEPLD is a simple programmable logic device within the broader programmable-logic-device hierarchy. Unlike a mask-programmed or one-time-programmable PAL, an EEPLD retains its configuration in nonvolatile Flash memory and can be updated during design, prototyping, or field maintenance. The ATF16V8B family is intended for compact combinatorial and registered logic implementations where a small gate count and familiar 20-pin architecture are advantageous.
Key features include a 250-gate equivalent capacity, as many as 16 inputs, eight configurable I/O paths, 5 V operation, and a 15 ns device rating. The ATF16V8B family also provides speed options down to 7.5 ns, while the selected ATF16V8B-15PC variant is identified by the 15 ns suffix. Its electrically erasable Flash configuration permits design revisions without replacing the device.
The ATF16V8B architecture supports software-selected operating modes and is intended to emulate common 16R8 devices and many 20-pin combinatorial PLDs. Eight outputs are allocated eight product terms each, allowing the device to implement multiple sum-of-products functions and registered logic in a compact package. A microchip product page describes the device as a 250-gate, standard-power, green-package EEPLD with a 5 V supply and up to 16 inputs.
Typical applications include industrial control logic, legacy peripheral emulation, address decoding, interface decoding, glue logic, counter and state-machine implementations, and compact control panels. The ATF16V8B-15PC is especially useful when an existing design uses a 20-pin PAL-style footprint and the new design benefits from a rewritable configuration memory.
The principal engineering consideration is timing. The 15 ns suffix denotes a defined speed grade, but board-level setup, hold, interconnect delay, and output loading must be included in timing analysis. Existing PAL or GAL footprints should also be checked against the Microchip replacement guidance because electrical characteristics are similar but may contain minor differences.
This page combines verified manufacturer and distributor information, a same-package replacement assessment, and practical selection guidance. It distinguishes documented facts from parameters that still require confirmation from the full manufacturer datasheet, helping engineers evaluate the ATF16V8B-15PC without relying on an incomplete distributor summary.
ドロップイン代替品: ATF16V8B-15PC — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATF16V8B-15PC （同一形状・フットプリント） — 相違点: Package, Mounting Type, I/O Count, Product Terms per Output, Architecture.
ATF16V8CZ-15PC
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATF16V8B-15PC 最大定格＆電気的特性
| Device Type | Electrically erasable programmable logic device (EEPLD) |
| Programmable Gate Capacity | 250 gates |
| Maximum Inputs | Up to 16 inputs |
| I/O Count | 8 I/Os |
| Macrocell Count | 8 macrocells |
| Speed Grade | 15 ns |
| Family Maximum Pin-to-Pin Delay | 7.5 ns |
| 電源電圧 | 5 V |
| Configuration Technology | Electrically erasable Flash memory |
| Logic Architecture | 16V8 architecture with 8 outputs |
| Output Product-Term Allocation | 8 product terms per output |
| Operating Mode Support | Three software-selected modes of operation |
| Power Class | Standard power |
| パッケージ | 20-pin PDIP |
| Package Pitch | 7.62 mm (0.300 inch) |
| Package Finish | Green package |
| 実装タイプ | Through-hole |
| Family Standby Current | 5 mA |
| RoHS ステータス | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
ATF16V8B-15PC green package ピン配置ガイド
ATF16V8B-15PC (green package 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: ATF16V8B-15PC.
詳細は データシート をご参照ください。
主な用途
ATF16V8B-15PC の用途: 6 件s: Legacy PAL Interface Emulation, Industrial Control and Interlock Logic, Address and Command Decoding, Counter and State-Machine Logic, Test and Measurement Fixtures, Communication and Data-Format Conversion.
Legacy PAL Interface Emulation
The ATF16V8B-15PC is appropriate for replacing a 16V8-style PAL interface when the target uses a 20-pin PDIP footprint and requires a rewritable configuration. Its documented 250-gate capacity, 8 macrocells, up to 16 inputs, and 8 I/Os support compact decoding and registered-control functions. The 15 ns grade provides a defined timing target, but engineers should confirm pin assignments, setup and hold requirements, and the JEDEC fuse map against the original design before substitution.
Industrial Control and Interlock Logic
The ATF16V8B-15PC can implement compact interlocks, sequencing, and machine-control decisions when a small amount of combinational or registered logic is required. Its 8 macrocells and 250-gate equivalent capacity are suitable for decoding switch states and coordinating actuators, while the 20-pin PDIP package supports through-hole assembly and legacy control-board layouts. The verified operating-temperature range is unavailable, so industrial deployment requires confirmation from the manufacturer datasheet.
Address and Command Decoding
For peripheral address decoding, the ATF16V8B-15PC offers up to 16 inputs and eight configurable I/O paths in a 20-pin package. These resources suit decode equations, chip-selection logic, and command qualification without using a larger microcontroller. Its electrically erasable Flash configuration allows firmware-like design revisions, while the 15 ns rating helps engineers assess setup and combinational timing budgets on the assembled board.
Counter and State-Machine Logic
The registered operating modes of the ATF16V8B architecture make the ATF16V8B-15PC applicable to small counters, sequence detectors, and asynchronous state machines. Eight macrocells provide a practical resource limit for the next-state and output equations, and the device supports up to 16 external inputs. Designers should use the manufacturer programming tool and timing specifications to confirm whether each macrocell mode satisfies the required clocking and feedback arrangement.
Test and Measurement Fixtures
A 20-pin ATF16V8B-15PC can provide configurable stimulus routing, mode selection, and measurement-fixture control in a compact instrument. Rewritable Flash configuration is useful when prototype boards require logic revisions without replacing the PLD. The 15 ns speed grade supports moderate-speed decoding, but fixture timing must include connector, cable, and instrument-output delays. The verified data does not establish a specific operating-temperature grade.
Communication and Data-Format Conversion
The ATF16V8B-15PC can implement small parallel-to-serial framing helpers, protocol qualification logic, and data-format adapters where the system requires more flexibility than fixed combinational gates. Its 8 macrocells and 16-input limit make it best suited to modest control paths rather than throughput-intensive datapaths. Engineers should validate setup time, hold time, clock skew, and registered-output behavior using the manufacturer timing diagrams and the actual board loading.
エンジニアリング参考データ: ATF16V8B-15PC — 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 | ATF16V8CZ-15PC |
|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP |
| Brand | Microchip Technology | Microchip Technology |
| Device Type | Electrically erasable Flash PLD | Electrically erasable Flash PLD |
| Speed Grade | 15 ns | 15 ns |
| Mounting Type | Through-hole | Through-hole |
主な差別化要因
- Electrically erasable Flash configuration （vs One-time-programmable GAL16V8 devices)
- Documented 15 ns speed grade （vs ATF16V8CZ-15PC)
- Compact 250-gate, 8-macrocell implementation （vs Larger programmable-logic devices)
設計ノート
Do not treat a shared 16V8 architecture as proof of a drop-in replacement. Although Microchip states that ATF16V8B and ATF16V8C devices are pin-to-pin and JEDEC fusemap compatible with GAL16V8 replacements, AC and DC characteristics can differ. Verify the exact package, speed grade, power mode, input thresholds, output behavior, timing limits, and programming file before substituting ATF16V8CZ-15PC.
Base timing closure on the manufacturer timing definitions and the assembled PCB rather than the 15 ns suffix alone. Account for input setup and hold requirements, propagation delay, output loading, clock skew, connector delay, and external feedback paths. The ATF16V8B family supports multiple operating modes, so the constraints and achievable clock rate depend on whether the selected macrocells operate combinationally or registered.
For a legacy PAL board, inspect the original 20-pin PDIP footprint, pin 1 orientation, and clearance before fitting the ATF16V8B-15PC. The verified package is a 7.62 mm-pitch PDIP, but footprint compatibility does not confirm signal-level compatibility. Review unused pins, programming access requirements, supply decoupling, ground-return paths, and any programming or test hardware needed to reprogram the Flash configuration.
コンプライアンス情報
The verified Microchip product page identifies the ATF16V8B as a green package, but the supplied extracts do not explicitly establish RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because this is a general-purpose PLD rather than an automotive-qualified variant.
