ATF16V8B-15SC - 15ns 250-Gate Flash PLD | Microchip Technology
Référence : ATF16V8B-15SC ✗ Fin de vieATF16V8B-15SC Présentation
A programmable logic device, or PLD, is a semiconductor whose internal logic connections can be configured after manufacture. In the product hierarchy, the ATF16V8B is an electrically erasable PLD, commonly called an EEPLD, within the broader FPGA and CPLD category. Unlike a mask-programmed PAL, its Flash configuration can be erased and rewritten, allowing design revisions, prototyping, and small-volume production without changing the device footprint.
Key features include eight macrocells, up to 16 inputs, eight I/O outputs, a 15 ns device speed, and 5 V operation. The ATF16V8B family is designed to emulate many 20-pin PALs, while software-assisted configuration modes support registered, combinatorial, and complex logic functions. The manufacturer identifies the package as a green, standard-power 20-SOIC device, making it suitable for compact surface-mount control and decoding logic.
Technically, the ATF16V8B combines a programmable macrocell array with electrically erasable Flash memory and a CMOS logic array. Each of its eight outputs can support multiple product terms, and the architecture can supersede 16R8 devices and many 20-pin combinatorial PLDs. The verified product information identifies speeds down to 7.5 ns across the broader family, while the ATF16V8B-15SC suffix specifically denotes the 15 ns grade.
Typical applications include industrial control logic, address decoding, protocol translation, state-machine implementation, legacy PAL replacement, and compact glue logic around microcontrollers or FPGAs. Its 20-pin SOIC footprint supports dense PCB layouts where eight programmable macrocells and numerous interconnectable inputs are valuable without moving to a larger CPLD.
The primary design consideration is verification of the configured architecture, pin assignment, and timing in the selected programming tool. Because this is a legacy PLD rather than a general-purpose FPGA, engineers should confirm that required input count, output count, registered outputs, and product-term depth are supported before committing it to a new design.
This page combines verified manufacturer and distributor information with same-footprint alternatives, parameter comparisons, and practical replacement guidance. It also distinguishes verified electrical and packaging facts from fields that still require confirmation from the manufacturer datasheet, helping engineers select and integrate the ATF16V8B-15SC without relying on unsupported assumptions.
Alternatives de remplacement direct pour ATF16V8B-15SC — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
ATF16V8B-15SU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATF16V8B-15GM
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATF16V8BQL-15SC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATF16V8B-15SI
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATF16LV8C-15SC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATF16V8B-15SC Valeurs maximales et caractéristiques électriques
| Device Type | Electrically Erasable Programmable Logic Device (EEPLD) |
| Programmable Logic Architecture | ATF16V8B |
| Equivalent Gate Capacity | 250 gates |
| Number of Macrocells | 8 macrocells |
| Maximum Inputs | 16 inputs |
| Number of I/O Outputs | 8 I/O outputs |
| Device Speed Grade | 15 ns |
| Family Maximum Pin-to-Pin Delay | 7.5 ns |
| Tension d'alimentation | 5 V |
| Configuration Technology | Electrically erasable Flash memory |
| Logic Technology | CMOS |
| Boîtier | 20-SOIC |
| Package Body Width | 7.50 mm |
| Lead Pitch | 0.295 inch |
| Type de montage | Surface mount |
| Power Class | Standard power |
| Package Environmental Class | Green package |
| PAL Compatibility | Emulates many 20-pin PAL devices |
| Generic Architecture Compatibility | Superset of 16R8 family and most 20-pin combinatorial PLDs |
Guide de configuration des broches du ATF16V8B-15SC green package
Configuration des broches du ATF16V8B-15SC (boîtier green package). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATF16V8B-15SC.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATF16V8B-15SC convient pour 6 applications: Legacy 20-Pin PAL Replacement, Industrial Address Decoding, Protocol and Interface Translation, State Machine and Sequencing Control, Legacy Control and Decode Consolidation, Instrumentation Signal Conditioning.
Legacy 20-Pin PAL Replacement
The ATF16V8B-15SC is well suited to replacing many 20-pin PAL devices because the manufacturer describes its architecture as a superset of generic 16R8 and combinatorial PLD configurations. Its eight macrocells, up to 16 inputs, and eight I/O outputs allow existing decode, control, and combinational functions to be consolidated into one 5 V device. Electrically erasable Flash configuration also permits controlled design corrections without changing the PCB footprint. Before releasing a replacement, verify that each required product term, feedback path, registered output, and pin assignment fits the supported architecture, and compare the original PAL’s propagation timing against the ATF16V8B-15SC 15 ns speed grade.
Recommandé
Industrial Address Decoding
ATF16V8B-15SC can implement compact address-decode and chip-select logic around a microcontroller, memory device, or peripheral bus. Sixteen inputs provide room for multiple address and control signals, while eight programmable outputs can drive enables, selects, or qualified control functions. Because the ATF16V8B family supports several configurable operating modes, engineers can reproduce registered or combinatorial PAL behavior rather than forcing the design into a fixed I/O arrangement. The 20-SOIC package is useful where board area is constrained, although the 15 ns grade and 5 V supply must satisfy the acquisition timing. Validate every decode equation and set-up margin in simulation, then confirm unused input states and power behavior against the manufacturer datasheet.
Recommandé
Protocol and Interface Translation
The ATF16V8B-15SC can bridge simple protocol differences when both sides use compatible 5 V logic. Its programmable macrocells can implement state transitions, signal qualification, format conversion, and exception handling without loading a larger FPGA. Sixteen inputs permit several control and data signals to be observed, while eight outputs support translated or registered responses. The electrically erasable configuration is valuable when interfaces evolve during qualification because the logic can be updated without replacing the package. Timing analysis should include the ATF16V8B-15SC 15 ns speed grade, output skew, input requirements, and the external interface’s setup and hold windows. Prototype the translation in the programming tool and verify it across all protocol states before production release.
Recommandé
State Machine and Sequencing Control
For compact state-machine and sequencing tasks, the ATF16V8B-15SC provides eight programmable macrocells that can combine state decoding with registered outputs. The 20-pin SOIC footprint supports designs needing more Boolean flexibility than a fixed counter or gate array while remaining smaller than many general-purpose FPGAs. The manufacturer notes that the ATF16V8B architecture can implement complex logic functions through software-selected operating modes. Engineers should define state transitions unambiguously, check that feedback terms fit each macrocell, and verify clock-domain assumptions because the verified excerpts do not fully specify operating-mode timing. A hardware-in-the-loop test is advisable when sequencing affects interlocks, power sequencing, or other safety-relevant transitions.
Recommandé
Legacy Control and Decode Consolidation
ATF16V8B-15SC can consolidate several small PALs into one programmable device when the combined design fits eight macrocells, 16 inputs, and eight outputs. Consolidating control decode, mode selection, and output qualification reduces package count and simplifies board assembly compared with multiple 20-pin devices. The electrically erasable Flash architecture supports controlled engineering changes because the configuration can be updated without a PCB respin. However, consolidation must account for macrocell sharing, fan-out, timing paths, and any changes in power behavior relative to the original PALs. Create clear logic partitions, simulate the complete system rather than each fragment alone, and confirm power-up behavior and unused-pin states on hardware before approving the multi-PAL consolidation.
Recommandé
Instrumentation Signal Conditioning
The ATF16V8B-15SC can implement fixed digital signal conditioning, event qualification, and control sequencing around analog or measurement circuits. Eight outputs can drive enables, indicators, or data-transfer controls, while up to 16 inputs support threshold and status signals. This makes the device useful for reducing repetitive discrete decoding in test and measurement equipment, particularly where a legacy PAL architecture already controls the board. The 5 V supply simplifies integration with older CMOS logic, but timing margin must be checked against sensors, comparators, and downstream converters. Keep high-speed transitions away from sensitive analog sections, observe grounding requirements, and verify the device’s I/O behavior in the manufacturer datasheet before using it inside a precision measurement path.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATF16V8B-15SC — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATF16V8B-15SU | ATF16V8B-15GM | ATF16V8BQL-15SC | ATF16V8B-15SI | ATF16LV8C-15SC |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Device Type | EEPLD | EEPLD | EEPLD | Low-power EEPLD | EEPLD | Programmable logic device with 8 macrocells |
| Number of Macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells |
| Speed Grade | 15 ns | 15 ns | 15 ns | 15 ns | 15 ns | 15 ns |
| Configuration Memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Programmable logic device with 8 macrocells |
Principaux différenciateurs
- Exact 15 ns ATF16V8B speed grade in a compact 20-SOIC package (vs ATF16LV8C-15SC)
- Direct same-family ordering option with the same nominal 15 ns speed (vs ATF16V8B-15SU)
- Standard-power ATF16V8B selection (vs ATF16V8BQL-15SC)
- Eight-macrocell, 16-input and eight-I/O architecture (vs ATF16V8B-15GM)
Notes de conception
Do not treat a shared 20-SOIC footprint as proof of unconditional interchangeability. The ATF16V8B-15SC, ATF16V8BQL-15SC, and ATF16LV8C-15SC belong to related but distinct families. Before replacing a populated board, compare supply voltage, temperature grade, output timing, macrocell product-term limits, registered or combinatorial operating modes, and the pin assigned to each architecture function. Obtain a current manufacturer datasheet and use the programming tool to compile the original design without warnings.
Preserve the original 20-SOIC land pattern and confirm pin 1 orientation against the PCB silkscreen, manufacturer drawing, and actual component marking. The verified excerpts establish the 20-SOIC package and 0.295-inch lead pitch but do not provide a complete numbered pin map. Before schematic capture or PCB editing, retrieve the official ATF16V8B datasheet and transcribe every power, ground, clock, input, output, and configuration connection. This avoids errors caused by assuming that generic 16V8 devices share identical package-level functions.
Use the 15 ns speed grade as a timing constraint rather than a guaranteed end-to-end delay. Account for the selected operating mode, external logic levels, fan-out, board capacitance, and setup or hold requirements at connected devices. If multiple outputs or clocks change together, evaluate their skew in the final PCB rather than relying only on the nominal pin-to-pin figure. For high fan-out or long-trace nets, add an appropriate buffer and keep the ATF16V8B output path physically short.
The ATF16V8B-15SC operates from 5 V, but the verified data does not provide operating current, standby current, or output-drive data. Determine those values from the manufacturer datasheet and calculate worst-case dissipation using maximum VCC, internal current, and loaded I/O current. Keep the 5 V return path compact, observe the required bypass-capacitor arrangement, and avoid placing the PLD in switching paths that inject excessive edge noise into nearby sensitive analog or timing circuits.
Informations de conformité
The manufacturer product page identifies a green package, but the verified excerpts do not explicitly establish RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status for the exact ATF16V8B-15SC orderable part.
