ATF16V8C-7SI - 7.5ns 8-Macrocelle PLD | Microchip Technology
MPN： ATF16V8C-7SI ✓ 啟用中ATF16V8C-7SI 概覽
A programmable logic device, or PLD, implements fixed digital logic functions that are configured in software rather than permanently connected with individual gates. The ATF16V8C family combines an 8-macrocelle architecture with multiple registered and combinational operating modes. Its architecture is a superset of generic 16R8 devices and can directly replace most 20-pin combinatorial PLDs, making it useful for compact control, decoding, address translation, and glue-logic designs.
The ATF16V8C-7SI provides a 7.5 ns maximum device speed, 8 macrocells, and approximately 300 gates. It supports a pin-controlled power-down option with 100 µA current. The manufacturer describes the family as CMOS and TTL compatible and identifies speed options down to 5 ns. Eight outputs are each allocated eight product terms, enabling more complex combinational functions than a basic dual-in-line PAL arrangement.
The device uses electrically erasable flash-memory technology, allowing its logic configuration to be programmed or erased without a dedicated programmer. Its 16V8 architecture supports complex logic functions configured automatically by software, while the 20-pin SOIC package supports conventional through-hole assembly and PCB compatibility with established 20-pin PLD designs.
Typical uses include industrial control and instrumentation, legacy interface decoding, programmable I/O expansion, embedded system address decoding, and compact peripheral-control logic. The ATF16V8C-7SI is especially relevant to brownfield equipment where an existing GAL16V8 or compatible 20-pin combinational PLD footprint must be retained.
When replacing an older GAL16V8, verify the configured fuse map, power-down behavior, termination requirements, and output timing. Although ATF16V8C devices are pin-to-pin and JEDEC fusemap compatible with GAL16V8 devices, AC and DC characteristics can contain minor differences that should be checked against the original design requirements.
This product record combines the ATF16V8C family architecture, package and speed details, drop-in replacement guidance, and practical design considerations into a focused guide for engineers maintaining or designing around 20-pin erasable programmable logic systems.
直接替換替代品，適用於 ATF16V8C-7SI — 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： ATF16V8C-7SI （相同外形與佔位） — 差異在於 Device Type, Package, Architecture, Configuration Technology.
ATF16V8C-7SU
✅ 直接替換聯絡詢價
查看資料表 →ATF16V8C-7SC
✅ 直接替換聯絡詢價
查看資料表 →ATF16V8C-7SC
✅ 直接替換聯絡詢價
查看資料表 →ATF16V8B-15SU
✅ 直接替換聯絡詢價
查看資料表 →ATF16V8C-7SI 最大額定值與電氣特性
| Device Type | High-performance electrically erasable programmable logic device (PLD) |
| Architecture | 16V8 with 300 gates |
| Macrocells | 8 macrocells |
| Maximum Pin-to-Pin Delay | 7.5 ns |
| Family Maximum Pin-to-Pin Delay | 5 ns |
| Nominal Supply Voltage | 5 V |
| Industrial Supply Range | 5 V ± 10% |
| Commercial Supply Range | 5 V ± 5% |
| Pin-Controlled Power-Down Current | 100 µA |
| Configuration Technology | Electrically erasable EECMOS flash memory |
| Output Product-Term Allocation | 8 product terms per output |
| Logic Compatibility | CMOS and TTL compatible |
| 封裝 | 20-SOIC, 0.295 inch (7.50 mm) width |
| 安裝類型 | Surface mount |
| Temperature Grade | Industrial grade |
ATF16V8C-7SI 20-soic, 0.295 inch (7.50 mm) width 腳位配置指南
ATF16V8C-7SI（20-soic, 0.295 inch (7.50 mm) width 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： ATF16V8C-7SI.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATF16V8C-7SI 適用於 6 應用s: Industrial Control Logic, Legacy GAL16V8 Replacement, Address and Bus Decoding, Programmable I/O Expansion, Instrumentation Signal Routing, Peripheral Control and Interlocks.
Industrial Control Logic
The ATF16V8C-7SI fits compact industrial control logic that combines decoding, state transitions, and output conditioning in one programmable device. Its eight macrocells and eight product terms per output provide enough capacity for multiple combinational functions, while the 7.5 ns maximum pin-to-pin delay supports moderate-speed control paths. The industrial-grade suffix and operation over 5 V ± 10% distinguish it from the commercial -7SU option. Use the manufacturer fuse map and configuration tools to implement the logic, and verify power-down-state outputs before connecting the device to external actuators.
推薦
Legacy GAL16V8 Replacement
ATF16V8C-7SI is suited to maintaining equipment built around GAL16V8-style combinational logic. Microchip identifies ATF16V8B and ATF16V8C devices as pin-to-pin and JEDEC fusemap compatible with GAL16V8 parts, allowing the existing 20-pin board architecture to be retained. The ATF16V8C-7SI also provides electrically erasable flash configuration and a 7.5 ns speed option. Before replacement, compare the original fuse map, power-down behavior, AC timing, and DC characteristics because the manufacturer notes that minor differences can exist between families.
推薦
Address and Bus Decoding
The ATF16V8C-7SI can implement address decoding, chip-select generation, and bus-control interlocks where a small number of Boolean terms are required. Its eight macrocells and 16V8 organization allow several outputs to be allocated across different decode functions, and the 7.5 ns pin-to-pin delay can support faster control sequences than the 15 ns ATF16V8B option. Account for output skew, setup time, and the configured operating mode when analyzing system timing. The 20-SOIC package also simplifies adoption in older through-hole equipment.
推薦
Programmable I/O Expansion
ATF16V8C-7SI can expand a legacy controller's discrete I/O logic by combining latch, decode, and output-enable functions in an erasable PLD. Eight product terms per output provide flexible Boolean implementation, while the pin-controlled power-down option can reduce consumption to 100 µA when a section is inactive. Use registered or combinatorial configuration according to the required timing behavior, and test every output during power transitions. A 15 ns ATF16V8B alternative may fit slower peripheral interfaces but does not provide equivalent timing margin.
推薦
Instrumentation Signal Routing
The ATF16V8C-7SI can route measurement-control signals, implement mode-selection logic, and generate enables for analog front ends in compact instrumentation. The 7.5 ns device speed helps minimize delay in control and select paths, while the industrial-grade target is better aligned with equipment operating outside the commercial temperature range than ATF16V8C-7SU. Configure the PLD only after identifying asynchronous inputs, metastability-sensitive paths, and outputs that must remain defined during power-down. Validate timing with the actual peripheral rather than relying only on the maximum pin-to-pin delay.
推薦
Peripheral Control and Interlocks
ATF16V8C-7SI is appropriate for relay and actuator sequencing interlocks in legacy industrial systems where a 20-pin PLD footprint is already established. Its eight macrocells can combine permissive logic, fault flags, and output-enable functions, while the 7.5 ns speed supports rapid sequencing of control outputs. Keep fail-safe behavior independent of programmed logic when the application requires a de-energized state during reset or power loss. Validate output states, supply tolerance, and timing margins across the full industrial supply range of 5 V ± 10%.
推薦
推薦產品摘要
工程參考資料，適用於 ATF16V8C-7SI — 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 | ATF16V8C-7SU | ATF16V8C-7SC | ATF16V8C-7S | ATF16V8B-15SU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (0.295 inch, 7.50 mm width) | 20-SOIC (0.295 inch, 7.50 mm width) | 20-SOIC (0.295 inch, 7.50 mm width) | 20-SOIC (0.295 inch, 7.50 mm width) | 20-SOIC (0.295 inch, 7.50 mm width) |
| Device Type | 16V8 electrically erasable PLD | 16V8 electrically erasable PLD | 16V8 electrically erasable PLD | 16V8 electrically erasable PLD | 16V8 electrically erasable PLD |
| Macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells |
| Maximum Pin-to-Pin Delay | 7.5 ns | 7.5 ns | 7.5 ns | 7.5 ns | 15 ns |
| Gate Count | 300 gates | 300 gates | 300 gates | 300 gates | 250 gates |
| Configuration Technology | Electrically erasable EECMOS flash memory | Electrically erasable EECMOS flash memory | Electrically erasable EECMOS flash memory | Electrically erasable EECMOS flash memory | Electrically erasable EECMOS flash memory |
主要差異化特點
- Faster timing within the same 20-SOIC footprint (對比ATF16V8B-15SU)
- Industrial temperature-grade option (對比ATF16V8C-7SU)
- Larger gate organization than the ATF16V8B alternative (對比ATF16V8B-15SU)
設計說明
Do not treat every 16V8 PLD as electrically interchangeable. The ATF16V8C family is a superset of generic 16R8 devices and can replace most 20-pin combinatorial PLDs, but the fuse map, output polarity, register configuration, and power-down behavior still need to match. For GAL16V8 migrations, compare the original configuration against the Microchip JEDEC fusemap and verify every output state during reset and power-down.
Design the 5 V supply for the ATF16V8C-7SI across the industrial range of 5 V ± 10%. Place the device's decoupling capacitor close to the supply pins and use a quiet source because configuration and system timing can be affected by supply ripple. If the 100 µA pin-controlled power-down mode is used, define its control logic so no output can produce an unintended command while the PLD is inactive.
Use the 20-SOIC footprint and pin assignments from the manufacturer datasheet rather than relying on a generic 20-pin PLD symbol. Verify orientation, supply-pin locations, programming access, and unused-pin treatment on the PCB. For systems that retain older GAL16V8 boards, compare the replacement device's AC and DC characteristics and check output timing because Microchip notes that minor family differences can exist.
Treat the 7.5 ns figure as a maximum pin-to-pin device specification rather than a guaranteed delay for every logic path. Configuration mode, product-term depth, output loading, temperature, and supply voltage affect real timing. In bus-decoding or interlock circuits, analyze worst-case path delay and output skew, and use ATF16V8B-15SU only when the slower 15 ns timing still satisfies the system requirement.
合規資訊
The ATF16V8C product information confirms the logic-device category and industrial-grade 5 V option but does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status.
