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ATF16LV8C-10PC 10ns EECMOS PLD | Microchip Technology
ATF16LV8C-10PC

ATF16LV8C-10PC 10ns EECMOS PLD | Microchip Technology

Microchip Technology ATF16LV8C-10PC is a 16V8 electrically erasable CMOS programmable logic device with eight macrocells, a 10 ns maximum pin-to-pin delay, and a 20-pin plastic DIP package. It uses electrically erasable flash memory and combines eight outputs, eight product terms per output, and three software-selected operating modes in one reconfigurable logic device. A programmable logic device, or PLD, is a semiconductor that stores a Boolean logic function as a configuration rather than implementing that function in fixed gates. The ATF16LV8C belongs to the simple PLD hierarchy, combining AND-array and OR-array logic resources with a registered output structure. It can replace 16R8-family devices and many 20-pin combinatorial PLDs when the design fits the available eight-output architecture. Key features include a maximum propagation delay of 10 ns, CMOS and TTL-compatible inputs and outputs, a pin-controlled power-down mode with a maximum specified power-down current of 5 microamperes, and typical standby current of 100 nA. Software-selected modes allow the same physical device to implement multiple combinational logic arrangements. The 20-pin DIP package supports conventional through-hole assembly and prototype-board implementation. The ATF16LV8C uses Atmel's EECMOS architecture with electrically erasable flash-memory technology for nonvolatile configuration. This permits a programmed logic function to be retained while allowing the device to be reprogrammed when a design revision changes the implemented equations. Eight product terms are assigned to each of the eight outputs, making the device appropriate for compact combinational control, decoding, and signal-routing functions rather than large sequential systems. Typical applications include industrial control logic, interface decoding, legacy peripheral control, embedded system glue logic, and replacement of small PAL or combinatorial PLD designs. A 10 ns pin-to-pin delay makes the device suitable for control and decoding paths where compact implementation and legacy package compatibility are more important than the density or configuration flexibility of a larger FPGA. When designing around the ATF16LV8C-10PC, verify every input and output assignment against the manufacturer's pin-description table and preserve the required programming-device interface and power conditions. The 10 ns speed grade is important when choosing a replacement because slower members of the same family are not automatically equivalent drop-in choices. This page organizes the manufacturer's architectural details, verified package and speed information, practical application guidance, and replacement constraints into a design-focused reference for engineers maintaining programmable-logic-based equipment.

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ATF16LV8C-10SC - 10ns 16V8 EECMOS PLD | Microchip
ATF16LV8C-10SC

ATF16LV8C-10SC - 10ns 16V8 EECMOS PLD | Microchip

The Microchip Technology ATF16LV8C-10SC is a 10 ns, 16V8 electrically erasable CMOS programmable logic device with eight output macrocells, supplied in a 20-pin SOIC package. It operates from a 3 V to 5.5 V supply, supports TTL-compatible inputs and outputs, and includes a pin-controlled power-down option with maximum power-down current of 5 µA. The device combines a superset of the generic 16R8 architecture with compatibility for direct replacement of the 16R8 family and many 20-pin combinatorial PLDs. A simple programmable logic device is a configurable semiconductor that implements digital logic functions through programmed AND/OR product terms. The ATF16LV8C belongs to the broader hierarchy of programmable logic devices, combining the density of a small field-programmable gate array with the simpler architecture of a PAL-style device. Its eight macrocells and configurable operating modes make it useful for compact control, decoding, address translation, interface adaptation, and fixed-format logic consolidation. The primary performance features include a maximum pin-to-pin delay of 10 ns, eight individually allocated macrocells, and eight product terms for each output. Automatic software-configured operating modes allow more complex logic functions without requiring a large gate-array implementation. Low-power operation includes typical 100 nA standby current, while the dedicated power-down control path can reduce current to no more than 5 µA when the circuit does not require continuous logic evaluation. Technically, the ATF16LV8C uses electrically erasable CMOS technology based on the manufacturer's proven flash-memory process. Its architecture emulates many 20-pin PAL devices and supports legacy 16R8 and combinatorial logic conversions. This makes it especially useful for maintaining or repairing equipment whose original mask-programmed or fuse-programmed logic has become difficult to source. Programming still requires the correct logic-development environment and a compatible device programmer. Typical implementations include industrial control logic, decoding and multiplexing networks, keyboard or panel-interface controllers, small peripheral adapters, legacy equipment service replacements, and compact embedded subsystems. Because each output is organized around a macrocell and multiple product terms, the device can consolidate several gates of fixed Boolean logic while preserving predictable propagation delay. The principal design consideration is compatibility. The replacement must use the same 20-pin SOIC footprint, supply voltage, output architecture, and programming method; electrical similarity alone is insufficient for a true drop-in upgrade. Existing schematics and board documentation should be reviewed before programming a substitute, especially when the replacement has a different operating-temperature designation or speed grade. This page combines the manufacturer's device architecture description with cross-reference findings, application guidance, package details, and selection criteria. It focuses on practical replacement planning, programmable-logic architecture, power behavior, and the differences that matter when deciding whether a candidate is genuinely pin-compatible.

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ATF16LV8C-10XU - 10ns EECMOS PLD | Microchip Technology
ATF16LV8C-10XU

ATF16LV8C-10XU - 10ns EECMOS PLD | Microchip Technology

The Microchip Technology ATF16LV8C-10XU is an electrically erasable programmable logic device with 8 macrocells, 20 I/O pins, a 10 ns propagation delay, and a 20-pin TSSOP package. It uses EECMOS programmable nonvolatile memory and supports operation from 3.3 V or 5 V supplies. The device is designed for compact control, decoding, glue-logic, and fixed-function replacement applications where reprogrammability and a small footprint are important. An EEPLD, or electrically erasable programmable logic device, is a semiconductor whose logic configuration is stored in nonvolatile memory. Unlike a mask-programmed fixed-function device, an EEPLD can be reconfigured during development or manufacturing. The ATF16LV8C belongs to the broader simple PLD hierarchy: SPLD, programmable logic device, digital logic IC, and semiconductor. Its macrocell-based architecture provides a practical balance between logic density, predictable timing, reprogrammability, and component cost. The ATF16LV8C-10XU provides 8 macrocells, 8 registers, and 20 I/O pins. Each of its eight outputs can be assigned eight product terms, while the device architecture consolidates the functions of generic 16R8 devices and many 20-pin combinatorial PLDs. Programmable operating modes are selected with development software, allowing one device to implement sum-of-products logic, registered outputs, and combinational functions without changing the printed circuit board. The 10 ns speed designation corresponds to a maximum propagation delay of 10 ns under the manufacturer’s specified test conditions. The same family is associated with approximately 250 gates and an 83.3 MHz maximum system frequency. A pin-controlled power-down mode can reduce current to approximately 5 µA, making the device useful in low-activity control panels and portable equipment where standby power is a design constraint. Exact timing and power values should be checked against the manufacturer datasheet for the selected operating voltage and temperature range. Typical uses include industrial control and instrumentation, peripheral interfacing, decoder logic, bus translation, custom reset or alarm logic, and compact embedded control systems. A microcontroller can host the design file and program the ATF16LV8C during production or field updates. The 20-pin TSSOP package also allows the device to occupy less board area than many conventional 20-pin through-hole or larger-surface-mount options. When planning the layout, keep programming and control traces away from sensitive analog or high-speed nets, provide a stable supply and decoupling close to the device pins, and use the manufacturer’s pin-definition table when assigning every signal. Confirm the programming-toolchain version, fuse map, and power-up state before releasing a production design because PLD behavior is determined by the stored configuration as well as the external connections. This page combines the manufacturer’s device positioning, exact ordering information, package details, and verified distribution records with application guidance, drop-in comparison data, and implementation considerations. It is intended to help engineers identify whether the ATF16LV8C-10XU provides the required macrocell count, timing, package, and programming architecture for a specific embedded-logic design.

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ATF16LV8C-15JC - 15 ns Flash PLD 20-PLCC | Microchip
ATF16LV8C-15JC

ATF16LV8C-15JC - 15 ns Flash PLD 20-PLCC | Microchip

The Microchip Technology ATF16LV8C-15JC is an electrically erasable CMOS programmable logic device with eight macrocells, eight dedicated outputs, and a 20-pin PLCC package measuring 9 mm by 9 mm. The ATF16LV8C family operates from 3.0 V to 5.5 V, and the -15JC grade is specified for a 15 ns pin-to-pin delay. Its nonvolatile EECMOS configuration technology supports reprogramming and combines simple PAL-style logic implementation with electrically erasable flash memory. A programmable logic device, or PLD, is a semiconductor that stores and executes user-defined Boolean logic. In the broader hierarchy, the ATF16LV8C belongs to the simple PLD family, combines a programmable logic array with registered combinational and sequential functions, and ultimately sits within the broader categories of programmable logic and digital semiconductors. It provides a compact way to implement decode, control, glue logic, and state-machine functions without using a microcontroller for small or fixed logic requirements. The ATF16LV8C architecture contains eight macrocells, with each output allocated eight product terms. Three operating modes are selected automatically by software, enabling more complex logic functions while retaining compatibility with many 20-pin combinatorial PLDs. The device also supports CMOS- and TTL-compatible inputs, allowing interfacing with conventional digital logic families. Family-level options include a maximum 10 ns pin-to-pin delay, a pin-controlled power-down function, and typical 100 nA standby current. The -15JC suffix identifies a 15 ns speed grade supplied in a commercial-temperature 20-pin PLCC configuration. The package uses J-bend terminals and a square 9 mm by 9 mm body. Because the ATF16LV8C stores its configuration in nonvolatile memory, the programmed logic remains present after power removal, eliminating repeated configuration loading and supporting field-reprogrammable control systems. Typical uses include industrial control and instrumentation, interface decoding, legacy peripheral glue logic, automated test equipment, embedded system control, and compact power-sequencing or interlock networks. The 20-pin footprint is particularly useful when an existing PLCC design requires a 15 ns replacement while retaining nonvolatile configuration memory and software-selectable operating modes. Designers should verify the complete pinout, programming voltage, timing limits, and power-down behavior in the manufacturer datasheet before laying out a new board. Existing PCB reuse also requires confirming the physical PLCC orientation, pin numbering, exposed component height, and operating-temperature grade rather than relying only on the device family name. This page combines the exact ATF16LV8C-15JC ordering information with a practical focus on PLCC footprint compatibility, 15 ns timing, flash-based configuration, application fit, and same-footprint alternatives. These engineering details help procurement and design teams evaluate whether the legacy PLD can remain in service or support an orderly transition to a programmable-logic alternative.

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ATF16LV8C-15JI - 16V8 EE PLD, 15ns, 20-PLCC | Microchip
ATF16LV8C-15JI

ATF16LV8C-15JI - 16V8 EE PLD, 15ns, 20-PLCC | Microchip

The Microchip Technology ATF16LV8C-15JI is a 16V8 electrically erasable programmable logic device (EE PLD) with 8 macrocells, a 15 ns speed rating, and a 20-pin PLCC package measuring 9 x 9 mm. It is designed for legacy-compatible logic implementation where a compact, reprogrammable device can replace 16R8-family and many 20-pin combinatorial PLD arrangements. The ATF16LV8C family uses EECMOS technology based on electrically erasable flash memory, allowing the logic configuration to be programmed and reprogrammed while retaining a conventional PLD form factor. An EE PLD is a semiconductor logic device whose internal interconnection and Boolean functions are established by programming rather than by permanently wiring individual gates. The 16V8 designation identifies a device with eight outputs, and each output is allocated eight product terms. The three operating modes described for the ATF16LV8C family are selected automatically by software, enabling complex combinational and registered logic functions without the component count of a conventional gate-array design. The ATF16LV8C-15JI combines a 3 V to 5.5 V operating input range with a 15 ns speed grade. The ATF16LV8C family also supports speeds down to 10 ns and includes a pin-controlled power-down option with approximately 5 uA current consumption. These features make the device useful for industrial control, interface translation, legacy peripheral support, and small embedded systems where a programmable logic block is preferable to a fixed gate network. Its electrically erasable flash-memory implementation provides a practical balance between field programmability, deterministic logic behavior, and compact package size. The device is categorized as an EE PLD and is positioned between simple fixed gate logic and more complex programmable logic devices. Unlike a mask-programmed device, the ATF16LV8C-15JI can be configured for multiple logic functions during development, production, or field upgrades, subject to the programming and electrical requirements in the manufacturer datasheet. Typical uses include address decoding, control-signal generation, data-routing logic, state-machine implementation, and replacement of older 20-pin PAL-style or combinatorial PLD circuits. The 8-macrocell architecture is especially suitable for small control blocks where a full FPGA or microcontroller would add unnecessary complexity. The 20-PLCC package allows the part to be used where leaded logic packages are preferred for hand soldering, prototyping, repair, or legacy board assembly. For new PCB designs, verify the exact pin assignment, programming algorithm, timing limits, power-up behavior, and unused-pin treatment in the manufacturer datasheet. A PLCC footprint should also be checked for orientation, pad dimensions, and thermal requirements. When replacing an existing device, use the suffix and package carefully because speed grade, temperature grade, and packing code affect fit, qualification, and procurement. This product page organizes the verified device identity, technical characteristics, drop-in replacement candidates, application guidance, and engineering-oriented design notes around the ATF16LV8C-15JI for engineers evaluating a legacy PLD migration or a compact programmable-logic upgrade.

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ATF16LV8C-15PC - 8-Macrocell EE PLD, 15 ns | Microchip
ATF16LV8C-15PC

ATF16LV8C-15PC - 8-Macrocell EE PLD, 15 ns | Microchip

The Microchip ATF16LV8C-15PC is a high-performance electrically erasable programmable logic device with 8 macrocells, a 15 ns speed grade, and a 20-pin PDIP package. It is designed for legacy control, decoding, address mapping, and general-purpose combinational or registered logic implementations. The device uses proven electrically erasable flash memory technology, allowing its configuration to be reprogrammed without dedicated UV-erasable devices. An EE PLD, also called an electrically erasable programmable logic device, is a semiconductor whose AND-Array and OR-Array logic structure is configured through electrical programming. The ATF16LV8C family is commonly described as a 16V8 device with 8 macrocells. It consolidates functions that otherwise require several 20-pin PAL devices, making it useful for compact glue-logic and industrial-control designs. Key characteristics include a maximum pin-to-pin delay of 15 ns for this speed grade, CMOS- and TTL-compatible inputs and outputs, and operation from a 3 V to 5.5 V supply. The family supports speeds down to 10 ns, while the ATF16LV8C-15PC corresponds to the 15 ns grade. A pin-controlled power-down mode is available, with maximum standby current listed as 5 µA and typical standby current of approximately 100 nA. The ATF16LV8C architecture provides 8 macrocells and dedicated input and output structures for implementing Boolean equations, registered transfer functions, address decoding, and control interlocks. Because it is a PLD rather than a general-purpose microcontroller, the design flow centers on a compiler, assembler, or schematic capture tool that generates the device configuration file. Legacy Atmel and Microchip tools are therefore an important compatibility consideration. Typical applications include industrial control boards, legacy peripheral interfaces, data routers, pulse and state detectors, memory address decoders, and compact control logic in equipment that retains 20-pin PLD footprints. The 3 V operation also suits mixed 3.3 V and 5 V system designs, although input thresholds, output levels, and unused inputs must be checked against the system rails before substitution. For new designs, confirm that the programmed logic file can be regenerated and that the required development software remains available. For repair or redesign work, validate the power-down pin state, output drive requirements, timing budget, and input-level compatibility before treating any 16V8-family device as a drop-in replacement. This page consolidates package details, programming constraints, drop-in alternatives, and application guidance to support legacy PLD maintenance, cross-reference work, and hardware refresh planning.

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ATF16LV8C-15PI - 16V8 EE PLD, 8 Macrocells, 15 ns | Microchip
ATF16LV8C-15PI

ATF16LV8C-15PI - 16V8 EE PLD, 8 Macrocells, 15 ns | Microchip

The Microchip Technology ATF16LV8C-15PI is a high-performance 16V8 electrically erasable programmable logic device (EE PLD) built on EECMOS flash technology, providing 8 macrocells and 250 gates in a 20-pin plastic DIP (PDIP) package. The -15 speed grade delivers a maximum pin-to-pin propagation delay of 15 ns, while the -15PI temperature grade targets industrial environments. A programmable logic device, or PLD, is a user-programmable IC whose internal AND/OR logic fabric is configured to implement a custom digital function. In the taxonomy hierarchy, ATF16LV8C belongs to the 16V8 family of simple PLDs, which sit between fixed-logic gates and FPGAs. The 16V8 architecture assigns eight product terms to each of its eight outputs and, according to the manufacturer documentation, incorporates a superset of the generic architecture so it can directly replace the 16R8 family and most 20-pin combinatorial PLDs. Three features define this device class. First, three different modes of operation are configured automatically with software, allowing highly complex logic functions to be realized from a single device. Second, a pin-controlled power-down mode limits active current to a maximum of 5 uA, with typical standby consumption of 100 nA, which suits battery-instrumented designs. Third, CMOS and TTL compatible inputs and outputs allow the device to interface directly with legacy TTL logic without level translation. Low-cost, easy-to-use software tools complete the feature set for design entry. The device supports speeds down to 10 ns across the ATF16LV8C family, and the family is usable with 3.3 V and 5 V supply rails. Typical uses include address decoding, bus arbitration, interface control, industrial control logic, and legacy 16V8/16R8 emulation in cost-sensitive equipment. The ATF16LV8C-15PI is an obsolete part, so procurement should focus on qualified supply channels. Design engineers should note that the 15 ns grade gives more timing margin than the 10 ns grade in new designs while matching the pinout of the original 20-pin DIP footprint. This page consolidates device specifications, drop-in replacement candidates in the same 20-PDIP footprint, and practical design guidance, including programming and power-down considerations that are not obvious from a distributor listing alone.

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ATF16LV8C-15SC - 15 ns 16V8 EE PLD | Microchip Technology
ATF16LV8C-15SC

ATF16LV8C-15SC - 15 ns 16V8 EE PLD | Microchip Technology

The Microchip Technology ATF16LV8C-15SC is a 16V8 electrically erasable programmable logic device with eight macrocells, a 15 ns speed grade, and a 20-pin SOIC package. It uses CMOS electrically erasable Flash technology, accepts 3 V to 5.5 V input voltage, and provides CMOS- and TTL-compatible inputs and outputs. The device can implement complex combinatorial or registered logic functions while reducing the component count and board area associated with discrete gate implementations. A simple programmable logic device, or SPLD, is a user-programmable semiconductor that combines programmable logic functions and configuration memory in one package. Within the broader hierarchy, the ATF16LV8C-15SC is an EE PLD, a 16V8 architecture, and a member of the ATF16LV8C family. This classification combines the density and flexibility of programmable logic with the reusable, electrically erasable configuration mechanism of Flash memory. Its eight outputs are each allocated eight product terms, supporting a useful range of control, decoding, interface, and glue-logic functions. The 15 ns speed designation identifies the device's maximum pin-to-pin delay for this ordering variant. Its eight macrocells can be configured in multiple operating modes by the associated programming software, allowing a single device architecture to realize different combinational, registered, or mixed logic arrangements. Pin-controlled power-down adds another system-level benefit by allowing an unused section of the design to enter a low-power state rather than remaining active continuously. The ATF16LV8C-15SC is based on high-performance EECMOS technology with electrically erasable Flash configuration memory. Flash-based configuration permits the programmed logic to be changed without removing the device from the circuit, which is useful during prototype debugging, production configuration, or field updates. The manufacturer describes the device as a superset of generic 16R8 architectures and as capable of directly replacing the 16R8 family and many 20-pin combinatorial PLDs. The 20-SOIC package supports conventional surface-mount assembly and compatibility with established 20-pin logic-board footprints. Typical uses include industrial control logic, legacy peripheral interfacing, data and address decoding, sequencing and interlocking functions, and compact system-support logic around processors. Eight outputs with eight product terms each make the device suitable for controlling multiple related signals where a small gate array would otherwise be required. In upgrade and repair situations, it can also reproduce logic designed for older 20-pin PAL-compatible devices when its architecture, supply voltage, and timing requirements are satisfied. The primary design consideration is timing closure. Every external signal path must meet the 15 ns propagation requirement after adding input, output, interconnect, and setup uncertainty. Designers should also verify the programmed macrocell mode, output polarity, supply voltage, and unused-pin treatment in the manufacturer datasheet. The ATF16LV8C-15SC is listed as obsolete in the cross-reference records, so long-term availability and legacy-system maintenance require careful sourcing. This product record combines package, speed, voltage, macrocell, and power-management characteristics with practical implementation guidance. It also distinguishes exact-ordering alternatives from other 16V8 devices, helping engineers evaluate replacement candidates without confusing speed-grade, temperature-grade, package, or lifecycle differences.

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ATF16V8B-10JC - 10ns 8-Macrocell EEPLD | Microchip Technology
ATF16V8B-10JC

ATF16V8B-10JC - 10ns 8-Macrocell EEPLD | Microchip Technology

Microchip Technology ATF16V8B-10JC is a 5 V electrically erasable programmable logic device (EEPLD) with 8 macrocells, 16 inputs, 8 I/O outputs, 250 gates, and a 10 ns propagation delay in a 20-pin PLCC (9x9) surface-mount package. It implements industry-standard 20-pin PAL-compatible architectures and supports complex combinational or registered logic without replacing the device after each configuration change. An EEPLD is a programmable-logic IC that stores its logic configuration in electrically erasable nonvolatile memory. Within the product hierarchy, an EEPLD is a simple PLD, a type of programmable-logic device and a semiconductor. Its practical advantage over a fuse-programmed PAL is field programmability: the ATF16V8B family can be configured and reprogrammed, making it suitable for prototypes, legacy product refreshes, and small control systems whose logic requirements may evolve. Key features include a 10 ns speed grade, eight macrocells with eight product terms per output, and three operating modes selected automatically by software. The manufacturer describes the device as a 250-gate, standard-power, green-package part with a 5 V supply. It emulates many 20-pin PAL devices and most 20-pin combinatorial PLDs, reducing the need for a redesign when consolidating older programmable-logic implementations. The ATF16V8B architecture supports flexible input and output assignments through its fuse map. Unlike a general-purpose microcontroller, the part executes only the Boolean equations placed into its macrocells, so its behavior is deterministic and does not require a clock when configured for combinational operation. Registered configurations can add sequential logic while retaining the compact 20-pin footprint and simple programming workflow. Typical uses include industrial automation, interface decoding, control-panel logic, telecommunications infrastructure, and consumer-equipment glue logic. The part is especially relevant to systems that previously used 20-pin PALs or simple GAL devices. Engineers should preserve the exact fuse map and verify package pin orientation during replacement, since logic configuration compatibility is as important as electrical and pin compatibility. The main design consideration is that a drop-in package does not guarantee identical behavior after programming. The replacement device must use a compatible JEDEC fuse map, and any pin-preset configuration, registered-logic mode, power-up behavior, and unused-pin treatment must be checked against the original design. This page combines verified manufacturer and distributor information with practical selection and replacement guidance.

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ATF16V8B-10JI - 250-Gate 10 ns Flash PLD | Microchip
ATF16V8B-10JI

ATF16V8B-10JI - 250-Gate 10 ns Flash PLD | Microchip

Microchip ATF16V8B-10JI is a 250-gate, electrically erasable programmable logic device with 8 macrocells, 16 inputs, 8 configurable I/Os, a 10 ns propagation delay, and a 5 V supply. The device is supplied in a 20-lead J-lead PLCC (QCCJ) surface-mount package measuring 9 x 9 mm and graded for industrial-temperature applications. An EEPLD is a programmable logic device that uses nonvolatile electrically erasable Flash memory to retain a configured logic function. Within the broader semiconductor hierarchy, the ATF16V8B belongs to the PLD and CPLD family, combining a PAL-compatible 16V8 architecture with eight output macrocells. It is intended for compact control, decoding, interface, and glue-logic designs where a small logic footprint and nonvolatile configuration are valuable. Key features include support for up to 16 inputs, eight configurable I/O outputs, and eight product terms allocated to each output. Three operating modes are selected automatically by the configuration software, allowing the device to implement registered, complex, or combinatorial logic without manual mode-control wiring. The electrically erasable architecture permits reprogramming while the individual architecture includes standard power-saving options for systems that do not require continuous maximum performance. The ATF16V8B architecture provides a superset of generic 16V8 and common 20-pin combinatorial PLD arrangements. Each of its eight outputs can be assigned eight product terms, supporting compact equations that combine multiple input conditions in one programmable block. The 10 ns speed grade is suitable for moderate-speed control logic, while the underlying family is also described as offering a maximum pin-to-pin delay of 7.5 ns under specified test conditions. Typical uses include legacy peripheral decoding, industrial control sequencing, status and interrupt logic, programmable address selection, and glue logic around microcontrollers or processors. Because the ATF16V8B is a 5 V device, it should be evaluated carefully in modern mixed-voltage systems where 3.3 V or 1.8 V interfacing may require level translation. Its J-lead PLCC package also occupies more board area than a comparable fine-pitch surface-mount PLD. When laying out a replacement design, preserve the exact pin assignments and programming architecture of the installed ATF16V8B-10JI. Confirm power sequencing, output drive requirements, unused-pin treatment, and the commercial programming algorithm supported by the selected device programmer. The industrial-temperature suffix must also remain consistent with the original bill of materials and qualification requirements. This product record combines verified manufacturer and distributor information with application guidance, package details, and drop-in substitution criteria that are not consolidated in a single manufacturer datasheet. It emphasizes verified constraints such as the 5 V supply, 10 ns speed grade, 8-macrocell architecture, and 20-lead PLCC footprint so engineers can compare replacements without confusing functionally similar devices with pin-compatible alternatives.

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ATF16V8B-10JU - 10ns 8-Macrocell EEPLD | Microchip Technology
ATF16V8B-10JU

ATF16V8B-10JU - 10ns 8-Macrocell EEPLD | Microchip Technology

The Microchip Technology ATF16V8B-10JU is a 10 ns electrically erasable programmable logic device with 8 macrocells, up to 16 inputs, and 8 configurable I/O outputs in a 20-pin PLCC package measuring 9 x 9 mm. The device implements conventional GAL16V8-style registered, complex, and simple logic architectures while using nonvolatile electrically erasable Flash memory for configuration storage. A simple programmable logic device, or SPLD, is a programmable semiconductor used to implement small amounts of fixed digital logic. Its architecture occupies a position between discrete gates and larger field-programmable gate arrays: an SPLD provides reusable combinational or registered logic, product-term interconnect, and field-configurable output stages without the complexity of an FPGA. The ATF16V8B family is intended for glue logic, control logic, decoding, state-machine support, and interface adaptation. The ATF16V8B architecture contains 8 output macrocells, with each output allocated 8 product terms. Up to 16 inputs can feed the programmable AND-array, while 8 pins can be configured as inputs or outputs. Three operating modes are selected automatically by the configuration software: simple mode, complex mode, and registered mode. This flexibility permits both combinational equations and registered state logic in one device. The ATF16V8B-10JU is identified by a 10 ns device speed and a JU package designation. According to the manufacturer product information, it is a standard-power, 5 V, green-package, electrically erasable PLD with a 250-gate-equivalent capacity. Electrically erasable configuration memory allows the device to be reprogrammed without removing it from the circuit. Typical uses include legacy control systems, address decoding, interface qualification, small state machines, and industrial glue logic. It is especially relevant when a compact PLCC design requires 16V8-style logic density, retained configuration, and programmable registered outputs rather than the larger logic capacity and I/O count of an FPGA. Circuit implementation requires careful review of the device pinout, programming software, and required 5 V supply conditions. Designers should preserve the prescribed input and output transition assumptions, account for system timing at the stated 10 ns speed, and validate every programmed function against the manufacturer pin-description table before production release. This product page combines the exact ATF16V8B-10JU ordering information with application-oriented design guidance, package details, programming references, and a focused comparison of electrically erasable PLD alternatives. It is intended to accelerate engineering review while keeping PCB compatibility, timing, and configuration-tool requirements visible.

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ATF16V8B-10PC - Programmable Logic Device | Atmel
ATF16V8B-10PC

ATF16V8B-10PC - Programmable Logic Device | Atmel

The Atmel ATF16V8B-10PC is a programmable logic device identified by the ATF16V8B family name and the -10PC ordering suffix. The verified product-page retrieval supplied for this MPN contains no manufacturer specifications, package details, electrical ratings, pricing, or lifecycle statement, so those values cannot be stated reliably on this page. The ATF16V8B designation is associated with the Atmel ATF16V8B family of simple programmable logic devices, but the exact device configuration, pin assignments, and commercial ordering data require confirmation from the original manufacturer documentation. A programmable logic device is a digital semiconductor used to implement fixed or configurable Boolean logic functions. These devices occupy a position between basic logic gates and programmable logic arrays in the broader integrated-circuit hierarchy. Unlike a microcontroller, a conventional programmable logic device generally does not execute application software; instead, its internal programmable connections are configured to realize a logic function such as decoding, gating, counting, multiplexing, or control sequencing. The ATF16V8B family is commonly associated with classic PLD-style architectures, while the precise architecture of this exact ordering code is not documented in the supplied retrieval. The -10 suffix in many Atmel ordering codes identifies a speed grade, and PC denotes the ordering package or temperature-related code in many device families. Those conventions cannot be applied to ATF16V8B-10PC without verification because the supplied search result did not expose a datasheet or product table. The same restriction applies to supply voltage, I/O type, output current, operating temperature, propagation delay, programming interface, memory technology, and package dimensions. Those values are intentionally left as data requests in the specifications table rather than inferred from similarly named parts. ATF16V8B-10PC may be considered for legacy digital control, industrial interface, glue-logic, and embedded system designs where a compact PLD can replace multiple fixed gates or older programmable devices. Before placing it in new production equipment, engineers should confirm availability, lifecycle status, programming-tool support, electrical compatibility, and the exact pinout. A modern MCU or FPGA should be considered when field programmability, extensive serial interfaces, larger logic capacity, or a supported software toolchain is required. The most important design step is to obtain the original ATF16V8B datasheet and compare its package drawing, programming architecture, and electrical limits with the PCB footprint. The supplied data does not identify whether the package uses PLCC, ceramic DIP, or another mechanical format, and no pinout can therefore be published safely. Likewise, existing board replacement is possible only after comparing every power, ground, input, output, clock, and programming pin rather than relying on the family name alone. This page distinguishes confirmed identity from missing technical evidence and does not convert unresolved parameters into assumptions. It also provides selection questions, sourcing guidance, and qualification criteria that help engineers determine whether ATF16V8B-10PC remains appropriate for a legacy design. The most reliable next step is to request the manufacturer datasheet, current distributor record, programming specification, and lifecycle notice for the exact MPN before committing a new production run.

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ATF16V8B-10PI - 10 ns 16V8 EEPLD | Microchip Technology
ATF16V8B-10PI

ATF16V8B-10PI - 10 ns 16V8 EEPLD | Microchip Technology

The Microchip Technology ATF16V8B-10PI is a 10 ns, 5 V electrically erasable programmable logic device with 250 gates, 8 macrocells, up to 16 inputs, and 8 configurable I/O outputs, housed in a 20-pin PDIP package. It is designed for industrial-temperature applications requiring configurable combinational or registered logic in a compact, electrically reprogrammable architecture. An electrically erasable programmable logic device, or EEPLD, is a semiconductor that stores its configured logic in nonvolatile memory. The ATF16V8B belongs to the broader PLD hierarchy: EEPLD > programmable logic device > digital logic IC. Its electrically erasable architecture permits the device to be reprogrammed during development, simplifying logic changes without manufacturing a new mask or using one-time-programmable fuse technology. The ATF16V8B-10PI provides a 10 ns propagation delay, 250-gate logic capacity, 8 macrocells, and up to 16 inputs with 8 configurable I/O outputs. Each of the eight outputs can be assigned eight product terms. Three operating modes are selected automatically by programming software, allowing the same device to implement simple combinational functions or more complex registered logic while preserving a conventional 20-pin PAL-style interface. Technically, the device uses high-performance CMOS circuitry and electrically erasable Flash-memory technology rather than one-time-programmable fuses. The architecture is a superset of generic 16R8 devices and can directly replace many 20-pin combinatorial PLDs. The 20-pin PDIP package, with 7.62 mm lead spacing, supports conventional through-hole PCB assembly and is appropriate for legacy industrial control, interface decoding, and embedded logic designs where surface-mount packages are unnecessary. Typical uses include industrial control interfaces, legacy peripheral decoding, address and command translation, custom combinational logic, and small registered control functions. Its reprogrammability is particularly useful during prototyping, system bring-up, and maintenance revisions. For new high-volume designs, however, engineers should evaluate whether a microcontroller, a current CPLD, or a small FPGA offers better software flexibility and longer-term sourcing. When designing around the ATF16V8B-10PI, account for the 5 V supply requirement, confirm that the selected GAL-style fuse map or device architecture matches the programmed equations, and validate all unused I/O states. Because the part is a legacy through-hole PLD, supply continuity, programming-tool support, and second-source availability deserve verification before committing to a production design. This page consolidates verified manufacturer and distributor information, same-package replacement candidates, pricing status, pin mapping, and practical design guidance. It also distinguishes genuine drop-in device options from functional alternatives, helping engineers assess legacy support without relying on raw catalog listings alone.

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ATF16V8B-10SC - 10ns 250-Gate EEPLD | Microchip
ATF16V8B-10SC

ATF16V8B-10SC - 10ns 250-Gate EEPLD | Microchip

The Microchip Technology ATF16V8B-10SC is a 250-gate electrically erasable programmable logic device with eight macrocells, up to 16 inputs, eight I/Os, and a 10 ns speed grade in a 20-pin SOIC package. It operates from a 5 V supply and provides a surface-mount implementation of the ATF16V8B architecture. An electrically erasable programmable logic device, or EEPLD, is a semiconductor that stores a defined Boolean logic configuration in nonvolatile erasable memory. The ATF16V8B family belongs to the broader hierarchy of PLD, programmable logic IC, logic IC, and integrated circuit categories. Its architecture supports combinatorial and registered logic functions, making it useful when fixed Boolean control logic can replace multiple discrete gates. Three headline characteristics define this device: eight macrocells provide the programmable logic capacity, the 10 ns grade supports higher-speed operation than slower PAL-compatible grades, and the 20-pin SOIC package supports compact surface-mount assembly. The family-level product information identifies a standard-power 5 V device with a green package, up to 16 inputs, and eight I/Os. The ATF16V8B architecture is designed to supersede generic 16R8 and many 20-pin combinatorial PLD arrangements. Each output can receive multiple product terms, while configurable operating modes provide flexibility for registered, combinatorial, and complex logic implementations. The family documentation also identifies compatibility with established GAL16V8-style pin and fuse-map conventions, allowing engineers to evaluate it as a migration option for older programmable logic devices. Typical uses include industrial control logic, interface decoding, sequencing, signal conditioning, and compact embedded systems that require a small number of deterministic Boolean functions. The ATF16V8B-10SC is particularly appropriate where a surface-mount 20-pin package, 10 ns timing grade, and electrically erasable configuration are preferable to a one-time-programmable PAL device. Designers should verify the exact fuse map, pin assignment, timing limits, supply tolerances, and programming-device support against the manufacturer datasheet before replacing an installed GAL16V8 or PAL device. PCB layout must also preserve the specified SOIC-20 footprint and suitable power and ground distribution. This product page consolidates the verified manufacturer and distributor information, compares compatible ATF16V8-family candidates, and highlights programming and replacement considerations that are not apparent from a distributor category listing alone.

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ATF16V8B-10SI - 10ns 250-Gate Erasable PLD | Microchip
ATF16V8B-10SI

ATF16V8B-10SI - 10ns 250-Gate Erasable PLD | Microchip

The Microchip ATF16V8B-10SI is a 10 ns, electrically erasable programmable logic device in a 20-SOIC package. It provides 250 gates, up to 16 inputs, 8 I/Os, and 8 macrocells for compact combinational logic implementations. The device operates from a 5 V supply in the standard-power Green package and is identified by the industrial-temperature ordering code. Its electrically erasable architecture supports device reprogramming without UV erasure, while its macrocell structure accommodates the generic 16R8 architecture and many 20-pin combinatorial PLDs. According to the manufacturer ATF16V8B datasheet, each output is allocated eight product terms and three operating modes are selected automatically by software. These characteristics make the ATF16V8B-10SI useful for legacy interface control, decoder, address translation, glue logic, and industrial automation functions where a compact, programmable 5 V logic solution is preferred over a larger FPGA. The 10 ns speed grade supports applications requiring deterministic combinational propagation, although final system timing must also account for interconnect delay, setup time, hold time, and peripheral timing. The ATF16V8B family is documented as pin-to-pin and JEDEC fusemap compatible with suitable GAL16V8 devices, which simplifies migration when a programmed GAL device is being replaced. The ATF16V8B-10SI is suitable for legacy control systems, factory automation, embedded equipment, and compact interface adapters. Design engineers should preserve the GAL16V8 fusemap and verify programming-tool support, power timing, and unused-pin behavior against the manufacturer datasheet before production release.

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ATF16V8B-15JC - 15ns 8-Macrocell EEPLD | Microchip Technology
ATF16V8B-15JC

ATF16V8B-15JC - 15ns 8-Macrocell EEPLD | Microchip Technology

The Microchip Technology ATF16V8B-15JC is a 15 ns, 8-macrocell electrically erasable programmable logic device with a 20-pin PLCC (9x9) package. It operates from a 5 V supply, provides up to 16 inputs and 8 configurable I/O paths, and offers approximately 250 gates of logic capacity. Its electrically erasable Flash memory architecture allows the programmed configuration to be erased and rewritten, distinguishing it from one-time-programmable fuse-based PAL devices. 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.

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ATF16V8B-15JI - 15ns 8-Macrocell EEPLD | Microchip Technology
ATF16V8B-15JI

ATF16V8B-15JI - 15ns 8-Macrocell EEPLD | Microchip Technology

The Microchip Technology ATF16V8B-15JI is a 15 ns, 5 V electrically erasable programmable logic device with 8 macrocells, up to 16 inputs, 8 I/Os, and 250 gates in a 20-pin PLCC package measuring 9 x 9 mm. The ATF16V8B architecture implements registered, combinatorial, and complex-programmable operating modes selected automatically by programming software. 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.

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ATF16V8B-15JU - 15ns 8-Macrocell SPLD | Microchip Technology
ATF16V8B-15JU

ATF16V8B-15JU - 15ns 8-Macrocell SPLD | Microchip Technology

The Microchip Technology ATF16V8B-15JU is a 5 V, electrically erasable simple programmable logic device with 8 macrocells, up to 16 inputs, 8 I/O outputs, and a 15 ns device speed. It is packaged in a 20-pin ceramic PLCC with a 9 mm by 9 mm body. The ATF16V8B architecture implements combinational, registered, complex combinational, and complex registered logic configurations for compact legacy control, decoding, and glue-logic designs. A simple programmable logic device is a user-programmed semiconductor that replaces a collection of individual gates and flip-flops with one configurable integrated circuit. In the product hierarchy, the ATF16V8B is a simple PLD, also called an SPLD, within the broader programmable-logic-device and digital-logic categories. Its electrically erasable architecture supports reusable or field-programmable logic without the mask costs associated with custom silicon. The ATF16V8B family provides 250 logic gates, eight output macrocells, and three software-configured operating modes. Each output is allocated eight product terms, allowing the same device to implement conventional GAL16V8-style functions. A 5 V supply supports compatibility with legacy CMOS logic systems, while the 15 ns speed designation identifies the target propagation-delay class. The device also supports up to 16 inputs and 8 I/O outputs through its 20-pin PLCC package. Technically, the ATF16V8B is designed as a direct replacement for many 16R8-family and 20-pin combinatorial PLDs. Its architecture supports eight outputs with individually allocated product terms and automatically selected operating modes, simplifying migration from GAL16V8D, ATF16V8C, and related devices. Microchip identifies the ATF16V8B and ATF16V8C families as pin-to-pin and JEDEC-fusemap-compatible replacements for GAL16V8 designs, although timing, supply, and programming details must still be checked before substitution. Typical uses include address decoding, bus-interface translation, control-signal generation, state-machine logic, and compact peripheral glue logic in industrial, communications, and legacy computer systems. It is particularly useful when the logic design is small enough for eight macrocells but too specialized for a larger FPGA or microcontroller. For a new board, preserve the 20-pin PLCC footprint and verify the programmed fuse map, pin assignment, supply voltage, and timing margin against the original design. Ceramic PLCC construction is also relevant to repair and obsolescence planning because the package is less common than modern plastic packages. This product summary consolidates the device architecture, package characteristics, timing, programming considerations, and drop-in replacement guidance to support faster component evaluation and legacy-design maintenance.

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ATF16V8B-15PC - 15 ns 250-Gate EEPLD | Microchip Technology
ATF16V8B-15PC

ATF16V8B-15PC - 15 ns 250-Gate EEPLD | Microchip Technology

The Microchip Technology ATF16V8B-15PC is a high-performance CMOS electrically erasable programmable logic device with a 15 ns speed grade, 250 programmable gates, up to 16 inputs, 8 I/Os, and a 20-pin PDIP package. It combines the familiar 16V8 PLD architecture with electrically erasable Flash memory technology, allowing the programmed configuration to be erased and rewritten instead of permanently fused. An EEPLD is a simple programmable logic device within the broader programmable-logic-device hierarchy. Unlike a mask-programmed or one-time-programmable PAL, an EEPLD retains its configuration in nonvolatile Flash memory and can be updated during design, prototyping, or field maintenance. The ATF16V8B family is intended for compact combinatorial and registered logic implementations where a small gate count and familiar 20-pin architecture are advantageous. Key features include a 250-gate equivalent capacity, as many as 16 inputs, eight configurable I/O paths, 5 V operation, and a 15 ns device rating. The ATF16V8B family also provides speed options down to 7.5 ns, while the selected ATF16V8B-15PC variant is identified by the 15 ns suffix. Its electrically erasable Flash configuration permits design revisions without replacing the device. The ATF16V8B architecture supports software-selected operating modes and is intended to emulate common 16R8 devices and many 20-pin combinatorial PLDs. Eight outputs are allocated eight product terms each, allowing the device to implement multiple sum-of-products functions and registered logic in a compact package. A microchip product page describes the device as a 250-gate, standard-power, green-package EEPLD with a 5 V supply and up to 16 inputs. Typical applications include industrial control logic, legacy peripheral emulation, address decoding, interface decoding, glue logic, counter and state-machine implementations, and compact control panels. The ATF16V8B-15PC is especially useful when an existing design uses a 20-pin PAL-style footprint and the new design benefits from a rewritable configuration memory. The principal engineering consideration is timing. The 15 ns suffix denotes a defined speed grade, but board-level setup, hold, interconnect delay, and output loading must be included in timing analysis. Existing PAL or GAL footprints should also be checked against the Microchip replacement guidance because electrical characteristics are similar but may contain minor differences. This page combines verified manufacturer and distributor information, a same-package replacement assessment, and practical selection guidance. It distinguishes documented facts from parameters that still require confirmation from the full manufacturer datasheet, helping engineers evaluate the ATF16V8B-15PC without relying on an incomplete distributor summary.

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ATF16V8B-15PI - 15 ns 5V 8-Macrocell PLD | Microchip Technology
ATF16V8B-15PI

ATF16V8B-15PI - 15 ns 5V 8-Macrocell PLD | Microchip Technology

Microchip Technology ATF16V8B-15PI is a 15 ns, 5 V, 8-macrocell electrically erasable programmable logic device in a 20-pin PDIP package. The device provides 250 gates, supports as many as 16 inputs and 8 I/Os, and combines CMOS PLD operation with electrically erasable Flash memory. Its 20-pin through-hole package supports direct insertion into conventional PAL-compatible sockets and PCB layouts. An electrically erasable programmable logic device, or EEPLD, is a semiconductor that stores configurable digital logic functions in nonvolatile memory. Within the broader hierarchy, an EEPLD is a programmable logic device, a form of digital logic IC, and ultimately a general-purpose semiconductor. Unlike a mask-programmed mask ROM or one-time-programmable fuse device, the ATF16V8B-15PI can be erased and reprogrammed while retaining its logic implementation between operating cycles. The ATF16V8B family provides 8 macrocells and 250 gates, with configurable operating modes selected by software according to the required input and output equations. Maximum propagation delay is 15 ns for the ATF16V8B-15PI designation, making it suitable for control, decoding, address translation, interface adaptation, and general combinational or registered logic. The device operates from a single 5 V supply and is offered in a green 20-PDIP package. The 16V8 architecture supports up to 16 inputs and 8 outputs, allowing it to implement many common 20-pin PAL arrangements. Eight product terms are allocated to each output in the applicable operating mode. Because the device uses electrically erasable Flash memory, designers can reuse a programmed part during development or update its configuration without relying on one-time fuse programming. Typical uses include industrial control logic, legacy peripheral-interface adapters, programmable I/O expansion, decoding functions, and compact glue-logic implementations. The 15 ns timing class is useful where propagation delay matters, although exact system timing must still be checked against the programmed architecture and external load conditions. The same 20-pin footprint can simplify repairs or modernization of boards designed around compatible 16V8 PLDs. The primary design consideration is physical and functional compatibility rather than package interchange alone. Confirm the pinout, active levels of CE and OE, registered versus combinatorial configuration, supply voltage, and timing limits before substituting another part. Firmware and programming files must also be reviewed because equivalent pin assignments do not necessarily guarantee identical macrocell behavior or timing margins. This page combines verified manufacturer and distributor information, drop-in candidate screening, package-level comparison, and practical replacement guidance. It distinguishes verified device facts from unavailable pricing, lifecycle, compliance, and detailed timing fields, making the resulting selection guidance more useful for engineering review than a raw distributor listing alone.

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ATF16V8B-15PU - 15 ns 8-Macrocell 5V PLD | Microchip
ATF16V8B-15PU

ATF16V8B-15PU - 15 ns 8-Macrocell 5V PLD | Microchip

The Microchip ATF16V8B-15PU is a 15 ns, 5 V, electrically erasable programmable logic device with eight macrocells, up to 16 inputs, eight I/Os, and eight registered outputs in a 20-pin PDIP package. It emulates the industry-standard 20-pin PAL architecture and provides 250 gates for compact legacy control, decoding, address-selection, and interface logic. A simple programmable logic device, or SPLD, combines programmable AND-array routing with fixed OR logic in a small CMOS package. Within the broader hierarchy, the ATF16V8B belongs to PLD, simple programmable logic, digital logic IC, and semiconductor categories. Its electrically erasable Flash configuration supports nonvolatile logic, while the -15 designation identifies the verified 15 ns device used where faster propagation timing than slower legacy options is useful. Key verified features include eight macrocells and a 250-gate equivalent capacity. The device supports as many as 16 inputs and eight I/Os, with eight registered outputs identified by distributor data. It operates from a nominal 5 V supply in a green package and uses electrically erasable Flash memory rather than fuse technology. Microchip also describes the ATF16V8B family as a superset of generic 16R8 architectures and as suitable for direct replacement of common 20-pin combinatorial PLDs, subject to logic, timing, and package checks. The ATF16V8B architecture gives each output eight allocated product terms and offers automatically configured operating modes for implementing comparatively complex logic. The 15 ns part is appropriate for legacy 5 V systems where logic depth, decoding latency, and compact implementation matter more than modern FPGA integration. A search result also identifies 62 MHz for this family, but the supplied data does not reconcile that figure with the 15 ns propagation grade, so it should not be treated as a guaranteed system-frequency specification without the full datasheet timing conditions. Typical uses include GAL16V8-compatible replacements, address and chip-select decoding, bus-interface qualification, industrial controller glue logic, keyboard or display decoding, and compact control sequencers. Programming normally requires a compatible JEDEC file, ATF16V8B device selection, and an electrically erasable PLD programmer such as TL866II+ with suitable adapter hardware. Designers should verify pinout, package, supply voltage, AC timing, and JEDEC fuse-map compatibility before substitution. The P suffix indicates the verified PDIP-20 mechanical option, so it must not be confused with PLCC or other ATF16V8 packages. Programming settings, output polarity, register bypass, and unused pins should be validated against the manufacturer datasheet and programmer documentation. This page combines verified Microchip family data, distributor specifications, GAL16V8 replacement guidance, commercial availability, and design-oriented replacement checks to provide engineering context beyond a basic distributor listing.

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ATF16V8B-15SC - 15ns 250-Gate Flash PLD | Microchip Technology
ATF16V8B-15SC

ATF16V8B-15SC - 15ns 250-Gate Flash PLD | Microchip Technology

Microchip Technology ATF16V8B-15SC is a 250-gate electrically erasable programmable logic device with eight macrocells, 16 inputs, eight I/O outputs, and a 15 ns speed grade in a 20-pin SOIC package. It operates from a 5 V supply and uses CMOS electrically erasable Flash memory for nonvolatile logic configuration. The ATF16V8B architecture emulates many 20-pin PAL devices and provides a superset of generic 16R8 architecture. 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.

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ATF16V8B-15SI - 15ns 8-Macrocell EEPLD | Microchip | 20-SOIC
ATF16V8B-15SI

ATF16V8B-15SI - 15ns 8-Macrocell EEPLD | Microchip | 20-SOIC

The Microchip ATF16V8B-15SI is a 15 ns, 8-macrocell electrically erasable programmable logic device (EEPLD) in a 20-pin SOIC package. It provides up to 16 inputs, 8 I/Os, and 250 logic gates for implementing combinational or registered control logic. The device operates from a nominal 5 V supply and is programmed through electrically erasable Flash technology. An EEPLD is a semiconductor that stores a user-defined Boolean function in nonvolatile Flash memory. It occupies the same broad role as a PAL, GAL, CPLD, or FPGA, but combines a relatively small logic array with a simpler programming model. In a system hierarchy, the ATF16V8B belongs to the programmable-logic-device family and provides more integration and reprogrammability than a discrete AND-OR logic implementation. The ATF16V8B family offers 250 gates, standard power operation, a green package, and support for as many as 16 inputs and 8 I/Os. The -15 speed designation corresponds to a 15 ns maximum pin-to-pin delay. Flash-based configuration allows the same device to be reused during development or programmed in the field without removable memory. ATF16V8B devices support several architectures, including combinational, complex combinatorial, registered, and mixed registered/combinational modes. This flexibility makes one part family useful for address decoding, state-machine logic, interface control, Boolean equations, and small glue-logic blocks. Microchip states that the ATF16V8B and ATF16V8C families are pin-to-pin and JEDEC fusemap compatible replacements for GAL16V8-class devices. Typical applications include industrial control boards, legacy peripheral emulation, programmable logic interfaces, decoder and latch circuits, and compact control systems that need nonvolatile combinational or registered logic. The 20-SOIC package also supports designs that require a through-hole-compatible leaded package rather than a fine-pitch surface-mount arrangement. When planning a board, confirm the selected fuse map, speed grade, supply voltage, and pin assignment before generating the programming file. The -15SI ordering code identifies a 15 ns device in the industrial-temperature SOIC package. Use the manufacturer's pin-description table and programming-tool documentation as the authoritative references for board connections and device configuration.

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ATF16V8B-15SU - 15ns 8-Macrocell EEPLD | Microchip Technology
ATF16V8B-15SU

ATF16V8B-15SU - 15ns 8-Macrocell EEPLD | Microchip Technology

The Microchip Technology ATF16V8B-15SU is a 15 ns, 5 V, electrically erasable programmable logic device with 8 macrocells, 250 gates, up to 16 inputs, and 8 user I/Os in a 20-pin SOIC package. It is designed for compact combinational and registered logic implementations where a small, reprogrammable device is preferable to a collection of conventional gates. 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.

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