ATF16V8B-15JI - 15ns 8-Macrocell EEPLD | Microchip Technology
N.º de pieza: ATF16V8B-15JI ✗ Fin de vidaATF16V8B-15JI Descripción general
An EEPLD is a semiconductor that stores a logic configuration in nonvolatile electrically erasable memory. In the broader hierarchy, it is a programmable logic device, a digital integrated circuit, and ultimately a general-purpose logic semiconductor. Unlike a mask-programmed PAL, the ATF16V8B can be reprogrammed during development, production, or field maintenance without changing the integrated-circuit mask.
The ATF16V8B-15JI provides eight outputs, with each output allocated eight product terms, allowing the same device to implement many conventional 20-pin PAL arrangements. Its 15 ns speed designation is suitable for legacy control, decoding, address mapping, interface conditioning, and general glue-logic functions. The manufacturer describes the device as a standard-power, 5 V, green-package EEPLD with as many as 16 inputs and 8 I/Os.
Technically, the device combines a reusable Flash-based configuration memory with a combinational logic array and configurable output registers. Software automatically configures the appropriate architecture, reducing the need to design around a fixed PAL fuse pattern. The ATF16V8B family also provides a superset of generic 16R8 and many 20-pin combinatorial PLD architectures, making it useful for consolidating multiple legacy devices onto one programmable footprint.
Typical applications include industrial control-panel decoding, legacy peripheral-interface glue, programmable address decoding, general bus conditioning, and compact logic consolidation. Because the ATF16V8B is a 5 V device, system-level compatibility should be checked carefully when it interfaces with modern 3.3 V devices; the verified product data does not specify mixed-voltage interface tolerance.
Designers should preserve the original JEDEC-compatible pin arrangement, use the appropriate Microchip programming tool, and include an unobstructed programming interface in the PCB layout. Before replacing an older PAL or GAL, verify the macrocell architecture, registered versus combinatorial outputs, pinout, propagation delay, and power-up behavior rather than relying only on package dimensions.
This product page combines verified manufacturer and distributor attributes, pin-compatible replacement analysis, practical legacy-logic design guidance, and structured comparisons. Those engineering details help distinguish a true drop-in replacement from a merely similar EEPLD and support faster sourcing and design verification.
Alternativas directas para ATF16V8B-15JI — 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-15JI (mismo factor de forma y huella) — difiere en Package, Maximum Inputs, Mounting Type, Device Type, Maximum Pin-to-Pin Delay.
ATF16V8B-15JU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF16V8B-15PC
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Ver hoja de datos →ATF16V8BQL-15JI
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ATF16V8C-15JI
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ATF16V8CZ-15JI
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GAL16V8D-15QJ
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ATF16V8B-15JI Valores máximos y características eléctricas
| Product Type | Electrically Erasable Programmable Logic Device (EEPLD) |
| Device Architecture | 16V8 |
| Macrocells | 8 macrocells |
| Equivalent Gate Capacity | 250 gates |
| Maximum Inputs | 16 inputs |
| I/O Count | 8 I/Os |
| Output Count | 8 outputs |
| Product Terms per Output | 8 product terms |
| Tensión de alimentación | 5 V |
| Speed Grade | 15 ns |
| Maximum Pin-to-Pin Delay | 10 ns |
| Configuration Memory | Electrically erasable Flash memory |
| Supported Architecture Modes | Registered, combinatorial, and complex programmable modes selected by software |
| Encapsulado | 20-pin PLCC, 9 x 9 mm |
| Terminal Count | 20 terminals |
| Temperature Grade | Industrial |
| Tipo de montaje | Surface Mount |
Guía de configuración de pines de ATF16V8B-15JI 20-pin plcc, 9 x 9 mm
Configuración de pines para ATF16V8B-15JI (encapsulado 20-pin plcc, 9 x 9 mm). 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-15JI.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATF16V8B-15JI es adecuado para 6 aplicacións: Industrial Control Logic Consolidation, Legacy Peripheral Interface Conditioning, Programmable Address Decoding, Bus Signal Conditioning and Isolation, Instrument Control and Measurement Logic, Legacy Security and Access Control Logic.
Industrial Control Logic Consolidation
The ATF16V8B-15JI suits legacy industrial control boards that still depend on PAL and GAL logic. Its 8 macrocells, 8 outputs, and support for as many as 16 inputs allow several decoding and interlock functions to be consolidated into one 5 V device. The electrically erasable Flash configuration permits controlled design revisions without changing the PCB mask. At 15 ns, the part can also support many legacy control and peripheral-decoding paths where a modern microcontroller would add unnecessary complexity. Industrial use still requires confirmation of the device’s industrial temperature grade, current lifecycle status, and availability rather than assuming that a legacy PLD remains a preferred new-design choice.
Recomendado
Legacy Peripheral Interface Conditioning
The ATF16V8B-15JI can implement interface-conditioning logic between legacy processors, memories, and peripheral devices. Eight configurable outputs and eight product terms per output are useful for translating control sequences, qualifying enables, or resolving handshake signals without using a large FPGA. Its 15 ns propagation-delay class supports moderate-speed legacy buses, while nonvolatile Flash configuration preserves the programmed logic through power loss. Because the verified data specifies a 5 V device but does not confirm 3.3 V tolerance, any connection to modern low-voltage controllers should be reviewed against the absolute-maximum and DC-characteristic tables before installation.
Recomendado
Programmable Address Decoding
The ATF16V8B-15JI is appropriate for fixed address and command decoding in older embedded systems. Its registered and combinatorial operating modes allow a single 8-macrocell EEPLD to generate chip selects, memory enables, interrupt routing, or peripheral control signals. The 20-pin PLCC footprint and JEDEC-compatible architecture make it especially relevant when maintaining equipment designed around PAL or GAL devices. Repositories and system upgrades can be handled with the same electrically erasable device because the logic configuration is stored in Flash rather than fixed fuses. Engineers should preserve the original pinout and validate the fuse map before substituting a newer ATF16V8-generation device.
Recomendado
Bus Signal Conditioning and Isolation
The ATF16V8B-15JI can implement bus isolation, polarity correction, enable sequencing, and handshake logic around legacy data buses. Its eight I/Os and flexible macrocell organization provide enough capacity for common control functions, while 15 ns timing suits many slower processor buses. Programmable outputs are useful when different board revisions require revised decode or arbitration behavior. In practical designs, the EEPLD should be placed close to the controlled signals to minimize trace delay and keep its supply and ground returns compact. The original device’s power-up and registered-output behavior must be matched because a pin-compatible replacement with a different configuration interpretation can still create system-level timing failures.
Recomendado
Instrument Control and Measurement Logic
The ATF16V8B-15JI can provide deterministic control sequencing for legacy measurement instruments and automated test fixtures. The eight macrocells can implement mode commands, range selection, status encoding, or front-panel decoding, while nonvolatile Flash storage keeps the configuration stable across power cycles. A 15 ns device is appropriate for many instrument-control paths that are dominated by relay, display, and digital-interface timing rather than high-speed analog switching. Compatibility with newer USB, network, or processor modules must be checked at the voltage level because the verified ATF16V8B-15JI data specifies 5 V operation and does not establish 3.3 V interface tolerance.
Recomendado
Legacy Security and Access Control Logic
The ATF16V8B-15JI can implement compact access-control decision logic, alarm decoding, keypad state handling, and interlock sequences in older electronic systems. Eight macrocells are sufficient for many Boolean combinations, and Flash configuration allows authorized firmware updates or hardware revisions without replacing the integrated circuit. The industrial temperature grade supports applications whose environmental requirements have been verified, but the part should not be selected solely on that basis because its 5 V interface and legacy lifecycle require system-wide review. For new safety-related designs, compare the ATF16V8B with a currently supported programmable-logic platform and assess formal verification, supply longevity, and functional-safety documentation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATF16V8B-15JI — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATF16V8B-15JU | ATF16V8B-15PC | ATF16V8BQL-15JI | ATF16V8C-15JI | GAL16V8D-15QJ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-PLCC (9x9) | 20-PLCC (9x9) | 20-PLCC (9x9) | 20-PLCC (9x9) | 20-PLCC (9x9) | 20-PLCC (9x9) |
| Device Architecture | 16V8 | 16V8 | 16V8 | 16V8 | 16V8 generation | GAL16V8D |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Speed Grade | 15 ns | 15 ns | 15 ns | 15 ns | 15 ns | 15 ns |
| Maximum Inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs |
| I/O Count | 8 I/Os | 8 I/Os | 8 I/Os | 8 I/Os | 8 I/Os | 8 I/Os |
| Special Feature | Software-selected registered, combinatorial, and complex-programmable modes | Software-selected architecture modes | Software-selected architecture modes | Software-selected architecture modes | Enhanced ATF16V8C generation | JEDEC-fusemap-compatible GAL16V8D architecture |
Diferenciadores clave
- Directly identified 15 ns industrial ATF16V8B configuration (frente a ATF16V8B-15PC)
- Flexible software-selected architecture modes (frente a GAL16V8D-15QJ)
- Flash-programmable 16V8 implementation with eight macrocells (frente a ATF16V8BQL-15JI)
- Pin-compatible upgrade path within the ATF16V8 family (frente a ATF16V8C-15JI)
Notas de diseño
Treat the ATF16V8B-15JI as a legacy surface-mount PLCC rather than assuming a standard leaded PLD footprint. Verify the 20-terminal J-bend layout, pin-1 orientation, pad dimensions, and paste or solder-process requirements against the official package drawing. The verified excerpts identify a 9 x 9 mm, 20-pin PLCC but do not provide the full land pattern. Preserve access to the programming interface and avoid placing tall components where a socketed or serviced assembly may require removal.
Design the ATF16V8B-15JI as a 5 V logic device and decouple its supply close to the package. The verified data does not provide the complete DC-current table or capacitor recommendation, so do not invent those values; use the manufacturer datasheet for operating and standby current and the recommended bypass network. For mixed 5 V and 3.3 V systems, confirm input thresholds and output-level compatibility before connecting modern devices. If either threshold is unsuitable, add a specific level-shifting or isolation circuit rather than relying on an unverified voltage tolerance.
A matching PLCC outline does not by itself prove that a replacement is functionally identical. Compare the JEDEC fusemap, number and polarity of product terms, registered versus combinatorial outputs, power-up behavior, speed grade, supply current, and programming algorithm. Microchip identifies ATF16V8B and ATF16V8C families as pin-to-pin and JEDEC-fusemap-compatible GAL16V8D replacements, but the verified comparison results also note that minor AC and DC differences can exist. Validate the worst-case timing and power-up sequence on hardware before production substitution.
Place the programmable logic close to the signals it decodes and maintain short, continuous supply and ground connections. Avoid routing high-current or switching-node returns through the logic area, and keep the programming interface away from long unprotected inputs. Because the ATF16V8B supports registered and combinatorial modes, signal integrity at the package can affect whether setup and hold requirements are met. Use the manufacturer’s package and test guidance to establish boundary conditions, and include test points for programming, reset, and critical output timing in a maintainable legacy design.
Información de cumplimiento
The verified Microchip product excerpt identifies a green package but does not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 status is not applicable because the verified data identifies this as an industrial EEPLD rather than an automotive-qualified device.
