ATF16V8B-15SU - 15ns 8-Macrocell EEPLD | Microchip Technology
N.º de pieza: ATF16V8B-15SU ✓ ActivoATF16V8B-15SU Descripción general
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.
Alternativas directas para ATF16V8B-15SU — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATF16V8B-15SU (mismo factor de forma y huella) — difiere en Device Type, Package, Architecture, Configuration Technology, Maximum Inputs.
ATF16V8BQL-15SU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF16V8C-7SC
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATF16V8B-15JU
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATF16V8B-15SU Valores máximos y características eléctricas
| Device Type | Electrically Erasable Programmable Logic Device (EEPLD) |
| Architecture | 16V8, 8 macrocells |
| Propagation Delay | 15 ns |
| Tensión de alimentación | 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 |
| Encapsulado | 20-pin SOIC |
| Tipo de montaje | 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 |
Guía de configuración de pines de ATF16V8B-15SU 20-pin soic
Configuración de pines para ATF16V8B-15SU (encapsulado 20-pin soic). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para ATF16V8B-15SU.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATF16V8B-15SU es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATF16V8B-15SU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Original 15 ns ATF16V8B implementation (frente a ATF16V8C-7SC)
- Direct ATF16V8B family configuration continuity (frente a ATF16V8C-7SC)
- 20-pin SOIC footprint with established 5 V operation (frente a ATF16V8BQL-15SU)
Notas de diseño
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.
Información de cumplimiento
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.
