ATF16V8B-15SU - 15ns 8-Macrocell EEPLD | Microchip Technology
MPN： ATF16V8B-15SU ✓ 啟用中ATF16V8B-15SU 概覽
An EEPLD is a member of the programmable-logic hierarchy that combines field-programmable interconnect and logic elements with nonvolatile configuration memory. The ATF16V8B architecture can implement registered, combinational, and complex programmable logic functions, making it useful for control, decoding, interface, and legacy system-support tasks. Its electrically erasable Flash technology permits the configuration to be changed instead of permanently fused.
Key characteristics include a 5 V supply, 15 ns propagation delay, 8 macrocells, 8 registered outputs, and support for as many as 16 inputs. The 20-pin SOIC construction suits conventional through-hole and mixed-technology assemblies where a larger PLCC footprint would be undesirable. Microchip describes the ATF16V8B family as a 250-gate, standard-power electrically erasable PLD.
The ATF16V8B architecture provides eight product terms for each output and supports software-selected operating modes. This organization allows compact implementations of common GAL16V8-style logic, including registered outputs with feedback, output polarity control, and combinational configurations. Designers should consult the device programming documentation when assigning fuse-map resources because architecture mode and pin allocation can affect usable logic capacity.
Typical applications include legacy peripheral control, address decoding, state-machine sequencing, bus-interface logic, industrial control, and board-level glue logic. The device is particularly appropriate when a design uses a GAL16V8-compatible architecture and must preserve a 5 V logic environment while avoiding the larger footprint and higher complexity of modern CPLDs.
During schematic capture, distinguish power, ground, clock, input, output, and configuration pins according to the SOIC pin-description table in the manufacturer datasheet. Place programming-interface or test-point access where the programmed device can be reprogrammed without mechanical changes. Confirm the exact fuse map and timing requirements before treating an existing GAL16V8 design as a direct substitution.
This product page combines manufacturer specifications, replacement context, package information, and practical implementation guidance. It also highlights verified alternatives in the same 20-pin SOIC footprint so engineers can evaluate speed, macrocell, and pin compatibility before making a replacement decision.
直接替換替代品，適用於 ATF16V8B-15SU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATF16V8B-15SU （相同外形與佔位） — 差異在於 Device Type, Package, Architecture, Configuration Technology, Maximum Inputs.
ATF16V8BQL-15SU
✅ 直接替換📋 參考替代品（不在目錄中）
ATF16V8C-7SC
✅ 直接替換聯絡詢價
查看資料表 →ATF16V8B-15JU
✅ 直接替換聯絡詢價
查看資料表 →ATF16V8B-15SU 最大額定值與電氣特性
| Device Type | Electrically Erasable Programmable Logic Device (EEPLD) |
| Architecture | 16V8, 8 macrocells |
| Propagation Delay | 15 ns |
| 供應電壓 | 5 V |
| Logic Family | CMOS |
| Programmable Gate Equivalent Count | 250 gates |
| Maximum Inputs | Up to 16 inputs |
| User I/O Pins | 8 pins |
| Registered Outputs | 8 |
| Total Logic Pins | 20 pins |
| 封裝 | 20-pin SOIC |
| 安裝類型 | Surface Mount |
| Configuration Technology | Electrically erasable Flash memory |
| Product Terms per Output | 8 product terms |
| Operating Modes | 3 software-configured modes |
| Internal Frequency | 58.8 MHz |
ATF16V8B-15SU 20-pin soic 腳位配置指南
ATF16V8B-15SU（20-pin soic 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATF16V8B-15SU.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATF16V8B-15SU 適用於 6 應用s: Legacy Address Decoding, Industrial Control and Sequencing, Bus Interface Logic, State-Machine Controller, Peripheral Control Glue Logic, Instrumentation Control Logic.
Legacy Address Decoding
The ATF16V8B-15SU can decode memory or I/O addresses where a compact, reprogrammable 5 V PLD is sufficient. Its 8 macrocells and 8 user I/Os provide dedicated logic resources, while the 15 ns propagation delay defines the available combinational timing margin. Eight product terms per output support moderately complex decode expressions. A board using an existing GAL16V8-style architecture may fit this device particularly well, provided the fuse map and architecture mode are verified against the programmed design.
推薦
Industrial Control and Sequencing
The ATF16V8B-15SU is appropriate for compact industrial control logic that coordinates discrete states, relay-control outputs, and interlock conditions. Eight registered outputs can implement state-machine sequencing when the configured mode provides suitable clocked behavior, while combinational inputs can be evaluated within the 15 ns propagation-delay requirement. Because the 5 V device has limited logic density, use it for modular subfunctions rather than concentrating an entire machine-control system into one PLD.
推薦
Bus Interface Logic
The ATF16V8B-15SU can implement legacy bus-control, selection, and data-routing functions around a 5 V processor or peripheral interface. Its 8 user I/O pins and 8 macrocells are useful for producing enables, strobes, and qualified control signals without a large gate array. The 15 ns propagation delay must be included in the interface timing budget, and all output states should be reviewed for bus contention during reset, configuration, or programming operations.
推薦
State-Machine Controller
For compact control sequences, the ATF16V8B-15SU can combine external inputs with registered outputs to implement a small state machine or sequencer. Its architecture supports registered logic functions, and the 15 ns propagation delay provides a defined timing target for state-transition logic. The eight macrocells and eight user I/Os make the device best suited to a modest state count. More complex sequencing should use additional devices or a higher-density programmable logic architecture.
推薦
Peripheral Control Glue Logic
The ATF16V8B-15SU can consolidate miscellaneous peripheral-control functions such as chip selects, mode commands, status decoding, and output isolation. Its 250-gate equivalent capacity and 8 macrocells are useful for replacing several conventional gate packages while retaining a single reconfigurable device. The 20-pin SOIC footprint simplifies replacement of comparable legacy logic. Design partitioning should preserve enough product terms for output functions and avoid relying on unused pins that the selected architecture mode may reserve.
推薦
Instrumentation Control Logic
The ATF16V8B-15SU can implement control and status logic in compact instrumentation where a 5 V legacy logic subsystem must be maintained. Registered outputs are suitable for mode selection, sequencing, or actuator-control functions, while the 15 ns specification supports ordinary low-speed control paths. It is not intended for high-speed signal processing; instead, it complements analog and digital acquisition circuitry by handling deterministic configuration logic close to the instrument interface.
推薦
推薦產品摘要
工程參考資料，適用於 ATF16V8B-15SU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATF16V8BQL-15SU | ATF16V8C-7SC | ATF16V8B-15JU |
|---|---|---|---|---|
| Package | 20-pin SOIC | 20-SOIC | 20-SOIC | 20-pin package; ordering suffix differs |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | EEPLD | 16V8 programmable logic device | 8-macrocell PLD | ATF16V8B programmable logic device |
| Macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells |
| Propagation Delay | 15 ns | 15 ns | 7.5 ns | 15 ns |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| User I/O Pins | 8 pins | 8 pins | 8 pins | 8 pins |
| Programmable Gate Equivalent Count | 250 gates | 250 gates | 250 gates | 250 gates |
| Configuration Technology | Electrically erasable Flash memory | Electrically erasable programmable logic | Electrically erasable programmable logic | Electrically erasable Flash memory |
主要差異化特點
- Original 15 ns ATF16V8B implementation (對比ATF16V8C-7SC)
- Direct ATF16V8B family configuration continuity (對比ATF16V8C-7SC)
- 20-pin SOIC footprint with established 5 V operation (對比ATF16V8BQL-15SU)
設計說明
Do not treat a 20-pin SOIC package match as sufficient proof of replacement compatibility. Compare the architecture mode, product-term allocation, feedback path, output polarity, and fuse map in the programming files. Microchip describes the ATF16V8B and ATF16V8C families as pin-to-pin and JEDEC fuse-map compatible with GAL16V8 devices, but also notes minor AC and DC differences, so timing and electrical limits must be reviewed.
Assign every output and clock-related signal using the package-specific pin-description table rather than relying on a generic GAL16V8 symbol. At a 15 ns propagation delay, board traces should be short enough to preserve the available timing margin, particularly when the PLD drives asynchronous control, reset, or bus-enable paths. Confirm that unused pins are handled according to the selected architecture and programming configuration.
Keep the 5 V and ground connections compact and decouple the supply close to the device with a suitable local bypass capacitor selected from the manufacturer’s recommended network. Because the ATF16V8B-15SU is a programmed logic device, preserve access to its programming or test interface where practical. The 20-pin SOIC footprint also allows conventional assembly methods used by the target board’s existing legacy logic design.
Account for the 5 V operating requirement and the device’s standard-power CMOS characteristics before substituting it into a mixed-voltage design. The 15 ns speed grade does not remove the need to meet the device’s specified operating conditions. If an ATF16V8C-7SC is considered for extra timing margin, verify that its electrical characteristics, configuration mode, and fuse map remain acceptable for the original circuit.
合規資訊
The exact-MPN environmental compliance declaration could not be established from the manufacturer product summary. The device is a programmable logic IC and is not identified as an AEC-Q100 automotive-qualified variant.
