ATF16V8B-15JC - 15ns 8-Macrocell EEPLD | Microchip Technology
N.º de pieza: ATF16V8B-15JC ✓ ActivoATF16V8B-15JC Descripción general
An EEPLD is a programmable logic device that stores a Boolean logic configuration in nonvolatile memory. Within the product hierarchy, an EEPLD is a form of PLD, which belongs to the broader semiconductor and digital-logic IC category. The ATF16V8B architecture emulates many 20-pin PAL devices and is suitable for implementing combinational and registered control logic where a small programmable device is preferable to a larger microcontroller or FPGA.
Key features include a 15 ns speed grade, 8 macrocells, up to 16 inputs, 8 I/O paths, 5 V operation, and 250-gate equivalent logic capacity. Each output is allocated eight product terms according to the ATF16V8B family documentation. The 20-pin PLCC package provides a compact surface-mount option for industrial and legacy logic designs, while the electrically erasable configuration supports programming and design revisions.
The ATF16V8B family uses a CMOS architecture and Flash-based configuration memory. The 15 ns suffix identifies a speed grade within the family, whose documented speeds extend down to 7.5 ns. Compared with discrete gate arrays or multiple conventional logic ICs, a single PLD can consolidate decoder, control, and state-transition logic into one programmable package. Exact AC timing, DC limits, and operating-temperature limits should be confirmed in the manufacturer datasheet for the selected ordering code.
Typical uses include legacy peripheral control, address decoding, command sequencing, industrial controller glue logic, and system-interface decoding. It is particularly relevant when an existing board uses a 20-pin PAL-compatible architecture and the replacement must retain the JEDEC-compatible fuse map while adding electrically erasable reprogramming.
For new designs, verify programmer support, pinout, timing, and output-mode requirements before replacing an existing GAL16V8 or PAL device. A footprint-compatible part is not automatically function-compatible unless its fuse map, macrocell structure, power behavior, and timing meet the original design requirements.
This page combines verified manufacturer and distributor information with a focused alternative comparison and engineering guidance. It distinguishes confirmed package and timing information from parameters that still require verification, helping engineers distinguish a board-level drop-in candidate from a merely functional alternative.
Alternativas directas para ATF16V8B-15JC — 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-15JC (mismo factor de forma y huella) — difiere en Package, Device Type, I/O Count, Mounting Type, Maximum Inputs.
ATF16V8B-15JU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF16V8BQL-15JC
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF16V8CZ-15JC
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF16V8C-7JU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATF16V8B-15PC
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATF16V8B-15JC Valores máximos y características eléctricas
| Device Type | Electrically erasable programmable logic device (EEPLD) |
| Architecture | 16V8 SPLD architecture with 8 macrocells |
| Propagation Delay | 15 ns |
| Logic Capacity | 250 gates |
| Macrocell Count | 8 macrocells |
| Maximum Input Count | Up to 16 inputs |
| I/O Count | Up to 8 I/Os |
| Tensión de alimentación | 5 V |
| Configuration Memory | Electrically erasable Flash memory |
| Encapsulado | 20-pin PLCC (9x9 mm) |
| Tipo de montaje | Surface mount |
| Product Terms per Output | 8 product terms per output |
| Architecture Compatibility | Emulates many 20-pin PALs |
Guía de configuración de pines de ATF16V8B-15JC 20-pin plcc (9x9 mm)
Configuración de pines para ATF16V8B-15JC (encapsulado 20-pin plcc (9x9 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-15JC.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATF16V8B-15JC es adecuado para 7 aplicacións: Legacy PAL-Compatible Interface Control, Industrial Address and Command Decoding, Peripheral Controller Glue Logic, Test and Measurement Control Logic, Communication Equipment Control Plane, Small System Programmable Control Hub, Legacy Equipment Field Upgrade.
Legacy PAL-Compatible Interface Control
The ATF16V8B-15JC fits legacy 5 V interface-control boards that were originally built around a 20-pin PAL-compatible fuse map. Its eight macrocells, up to 16 inputs, eight I/O paths, and 15 ns propagation delay provide enough capacity for address decoding, command qualification, and output-control functions in one package. Electrically erasable Flash configuration also simplifies revisions after programming. Because Microchip describes ATF16V8B devices as pin-to-pin and JEDEC fusemap compatible with GAL16V8 replacements, engineers should preserve the original fuse map and verify minor AC and DC differences before production use.
Recomendado
Industrial Address and Command Decoding
The ATF16V8B-15JC is appropriate for compact industrial decoding when a 5 V bus and deterministic 15 ns class are required. Eight macrocells can implement address qualification, register-select strobes, interlock conditions, and command sequencing without a larger microcontroller. The 20-pin PLCC (9x9 mm) package supports surface-mount assembly while limiting board area. Designers must confirm operating-temperature limits for the installed environment and check output timing against the receiving logic. Its electrically erasable configuration is valuable for maintenance programs or late functional changes, provided the same safety and validation process used for firmware updates is applied.
Recomendado
Peripheral Controller Glue Logic
The ATF16V8B-15JC can consolidate peripheral-control logic that would otherwise require multiple conventional gate packages. Its 16V8 architecture supports up to 16 inputs and eight I/O paths, while eight macrocells provide sufficient Boolean capacity for typical bus steering, status encoding, and write-cycle control functions. The 15 ns speed grade offers a defined timing target for 5 V systems, and Flash-based configuration permits programming and reprogramming during production. For an existing GAL16V8 or PAL design, first reproduce the original JEDEC fuse map, then verify every output mode because registered, combinatorial, and feedback behavior can differ even when the package is unchanged.
Recomendado
Test and Measurement Control Logic
The ATF16V8B-15JC is usable in test and measurement equipment for sequencing instrument commands, generating enables, and decoding status buses. Its eight macrocells and 15 ns speed grade suit low-to-medium complexity control paths, while the 20-pin PLCC package simplifies repair of legacy 5 V platforms. The nonvolatile, electrically erasable configuration enables controlled logic updates without replacing the device. Engineers should compare setup, hold, and propagation timing directly against the original PAL device and preserve the manufacturer's recommended power and decoupling arrangements. Any replacement should also be checked for programmer availability and a compatible JEDEC fuse-map file.
Communication Equipment Control Plane
The ATF16V8B-15JC can implement low-speed control-plane functions in legacy communication equipment, including command parsing, status multiplexing, route control, and alarm logic. The device's 5 V supply requirement fits established 5 V control boards, and its 15 ns class supports common register and handshake logic. Up to 16 inputs and eight configurable I/Os provide adequate connectivity for small subsystem controllers without committing to an FPGA. Because the ATF16V8B family is Flash-programmable, it can simplify hardware revisions. Confirm that signal levels, timing margins, and I/O structure are compatible with the original GAL16V8 or PAL implementation before qualification.
Small System Programmable Control Hub
The ATF16V8B-15JC can act as a small programmable control hub between slower peripherals and a host processor. Eight macrocells can combine chip-select generation, interrupt-request qualification, mode encoding, and reset sequencing, all within a 20-pin PLCC package. Its electrically erasable Flash configuration supports engineering iterations, while the 15 ns speed grade provides a predictable delay class for 5 V control signals. The principal constraint is logic capacity: complex state machines, wide bus arbitration, or intensive software servicing should move to an MCU or CPLD. For maintenance and production, use an approved programmer and verify that the device's fuse map matches the physical board revision.
Legacy Equipment Field Upgrade
The ATF16V8B-15JC is a candidate for field upgrading obsolete GAL16V8-based equipment when the original device is no longer practical to source. Microchip identifies ATF16V8B and ATF16V8C as suitable GAL16V8 replacements with pin-to-pin and JEDEC fusemap compatibility, although minor AC and DC differences can exist. This makes the electrically erasable ATF16V8B especially useful when field technicians need to correct a logic revision. Qualification should include package-lead comparison, timing tests, temperature verification, output-mode review, and a power-cycle test. Do not assume compatibility solely from the PLCC package designation; verify the complete ordering code and device documentation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATF16V8B-15JC — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATF16V8B-15JU | ATF16V8BQL-15JC | ATF16V8CZ-15JC | ATF16V8C-7JU | ATF16V8B-15PC |
|---|---|---|---|---|---|---|
| Package | 20-pin PLCC (9x9 mm) | 20-pin PLCC (9x9 mm) | 20-pin PLCC (9x9 mm) | 20-pin PLCC (9x9 mm) | 20-pin PLCC (9x9 mm) | 20-pin PLCC footprint; verify exact lead configuration |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | Electrically erasable programmable logic device | Electrically erasable programmable logic device | Electrically erasable programmable logic device | Electrically erasable programmable logic device | Electrically erasable programmable logic device | Electrically erasable programmable logic device |
| Propagation Delay | 15 ns | 15 ns | 15 ns | 15 ns | 7.5 ns | 15 ns |
| Macrocell Count | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells | 8 macrocells |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Configuration Technology | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory | Electrically erasable Flash memory |
| Input Capacity | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs | Up to 16 inputs |
Diferenciadores clave
- Exact 15 ns commercial-ordering option (frente a ATF16V8B-15JU)
- Programmable Flash configuration for design revisions (frente a ATF16V8C-7JU)
- Same-package standard-power device selection (frente a ATF16V8BQL-15JC)
Notas de diseño
Do not treat a shared PLCC package as proof of complete compatibility. Before substituting ATF16V8B-15JU, ATF16V8BQL-15JC, ATF16V8CZ-15JC, or ATF16V8C-7JU, compare the numbered pin table, output modes, setup and hold timing, supply-current limits, operating-temperature grade, and JEDEC fuse map. Microchip notes that GAL16V8 replacements have very similar AC and DC characteristics but can include minor differences. Preserve the original fuse map and perform board-level timing tests before production release.
The ATF16V8B-15JC is a 5 V device, so power rails, pull-ups, and connected I/O levels must be compatible with 5 V logic. Exact operating and standby current values were not present in the supplied verified results; obtain them from the manufacturer datasheet instead of estimating them. During board bring-up, measure current in inactive and active states and verify that neighboring devices do not drive the same PLCC net through incompatible voltage levels. Use the manufacturer's recommended supply bypassing and power-up sequence.
For a PCB replacement, compare the land pattern and J-leaded PLCC body dimensions rather than relying on the generic phrase 20-pin PLCC. Confirm that pin 1 orientation, lead pitch, courtyard, and solder-profile land geometry agree with the installed ATF16V8B-15JC. The verified package is 20-pin PLCC in a 9x9 mm body. For a new layout, keep the programmer access and test-point routing practical, and follow the manufacturer package drawing for thermal pad, lead, and soldering details.
A 15 ns propagation-delay grade does not by itself establish system timing margin. Build timing checks from the datasheet's worst-case output-delay, input setup-time, hold-time, and clock or feedback requirements, then include board skew and external-device delay. Avoid adding long unprotected routes to legacy high-impedance or multiplexed macrocell pins. If replacing a GAL16V8 or PAL, test every registered and combinatorial path because fuse-map equivalence does not guarantee identical timing behavior across every architecture variant.
Información de cumplimiento
The supplied verified results did not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for the exact ATF16V8B-15JC ordering code. The product is a programmable logic IC rather than an automotive-qualified AEC-Q100 device based on the provided information.
