ATF16LV8C-15PI - 16V8 EE PLD, 8 Macrocells, 15 ns | Microchip
Артикул: ATF16LV8C-15PI ✗ Снят с производстваATF16LV8C-15PI Обзор
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.
Аналоги без доработки для ATF16LV8C-15PI — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ATF16LV8C-15PI (тот же форм-фактор и посадочное место) — отличается по Device Type, Package, Maximum Pin-to-Pin Delay, Number of Macrocells, Power-Down Current.
ATF16LV8C-15PC
✅ Прямая заменаУточнить цену
Открыть даташит →ATF16LV8C-10PI
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ATF16LV8C-10PC
✅ Прямая замена ⚠️ Характеристики не провереныУточнить цену
Открыть даташит →ATF16LV8C-10JU
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ATF16V8B-15PC
✅ Прямая заменаУточнить цену
Открыть даташит →ATF16LV8C-15PI Максимальные параметры и электрические характеристики
| Device Type | 16V8 Simple Programmable Logic Device (EE PLD) |
| Programmable Technology | EECMOS (electrically erasable CMOS flash) |
| Number of Macrocells | 8 |
| Equivalent Gate Count | 250 gates |
| Maximum Pin-to-Pin Delay | 15 ns (-15 speed grade) |
| Family Maximum Speed | 10 ns (down to 10 ns supported) |
| Напряжение питания | 3.3 V / 5 V |
| Power-Down Current | 5 uA maximum (pin-controlled power-down mode) |
| Standby Current | 100 nA typical |
| Logic Levels | CMOS and TTL compatible inputs and outputs |
| Output Product Terms | 8 product terms per output, 8 outputs |
| Operating Modes | 3 modes of operation, configured automatically by software |
| Корпус | 20-PDIP (20-pin plastic DIP) |
| Тип монтажа | Through-hole |
| Temperature Grade | Industrial (-15PI suffix) |
| Device Architecture | Superset of generic 16V8 architecture; direct replacement for 16R8 family and most 20-pin combinatorial PLDs |
| Design Tool Support | Low-cost, easy-to-use software tools |
| Статус жизненного цикла | Obsolete |
Конфигурация выводов ATF16LV8C-15PI
| Контакт 1 | PD/CLOCK — Power-down / clock input used for mode configuration and product-term feedback control |
| Контакт 2 | I0 — Input pin I0 |
| Контакт 3 | I1 — Input pin I1 |
| Контакт 4 | I2 — Input pin I2 |
| Контакт 5 | I3 — Input pin I3 |
| Контакт 6 | I4 — Input pin I4 |
| Контакт 7 | I5 — Input pin I5 |
| Контакт 8 | I6 — Input pin I6 |
| Контакт 9 | I7 — Input pin I7 |
| Контакт 10 | GND — Ground reference |
| Контакт 11 | O0 — Output pin O0 |
| Контакт 12 | O1 — Output pin O1 |
| Контакт 13 | O2 — Output pin O2 |
| Контакт 14 | O3 — Output pin O3 |
| Контакт 15 | O4 — Output pin O4 |
| Контакт 16 | O5 — Output pin O5 |
| Контакт 17 | O6 — Output pin O6 |
| Контакт 18 | O7 — Output pin O7 |
| Контакт 19 | VCC — Positive supply (3.3 V or 5 V) |
| Контакт 20 | /OE — Active-low output enable for the eight outputs |
Типичное применение
ATF16LV8C-15PI подходит для 6 применениеs: Legacy 16V8 and 16R8 Emulation, Address and Chip-Select Decoding, Industrial Control and Interface Logic, Power-Down and Battery-Instrumented Equipment, Instrumentation Signal Conditioning Front End, Cost-Optimized Consumer and Appliance Control.
Legacy 16V8 and 16R8 Emulation
The ATF16LV8C-15PI is the natural fit for refreshing boards built around 16R8 or 20-pin combinatorial PLDs, because its architecture is a documented superset of the generic design. Its 8 macrocells with 8 product terms per output reproduce the classic 16V8 logic capability, and the three automatically configured operating modes let the same device implement simple combinatorial decode, registered output and complex registered functions. A board designer can transfer an existing JEDEC fuse or pattern file rather than redesign the logic, and because the part stays in the 20-PDIP footprint, the original through-hole layout and connector keep-out remain valid.
Рекомендуется
Address and Chip-Select Decoding
Address decoding is the classic job for a 16V8, and the ATF16LV8C-15PI delivers eight outputs each with eight product terms, enough to decode several chip-select lines for memory and peripheral selection without a decoder IC. At a 15 ns maximum pin-to-pin delay the device adds little to the memory access path compared with slower 25 ns and 30 ns PLD grades, which matters when the bus runs at tens of megahertz. Because inputs are CMOS and TTL compatible, the decoder can sit directly between legacy TTL bus buffers and the address lines without level translation, simplifying the schematic.
Рекомендуется
Industrial Control and Interface Logic
In industrial equipment the ATF16LV8C-15PI is used for glue logic that consolidates discrete gates into one programmable package: relay interlock sequencing, stepper index generation, alarm latch and reset logic. The industrial temperature grade suffix supports operation across extended ambient ranges where a commercial variant would be marginal, and the through-hole 20-PDIP package is convenient on larger control boards where hand assembly or rework is common. The pin-controlled power-down mode, holding current at a maximum of 5 uA with 100 nA typical standby, suits panels that spend long periods idle between operator actions.
Рекомендуется
Power-Down and Battery-Instrumented Equipment
The pin-controlled power-down mode makes the ATF16LV8C-15PI useful in portable and standby-dominant systems such as handheld meters and battery-powered field instruments. Driving the power-down pin low drops the device into a low-leakage state of 5 uA maximum, with typical standby consumption of 100 nA, so the logic does not dominate the quiescent budget of the whole instrument. The device can therefore be used to hold latch and isolation logic in place during long measurement gaps, waking to full operation at a 15 ns propagation delay once the power-down pin is released.
Рекомендуется
Instrumentation Signal Conditioning Front End
In test and measurement equipment, the ATF16LV8C-15PI is frequently used for front-end switching control, range selection and trigger conditioning ahead of converters, where a fixed gate array would need frequent respins. Eight independent outputs with eight product terms each are enough to drive multiplexer select lines, attenuator relay drivers and trigger arming paths, and the software-configured operating modes allow registered outputs for glitch-free range changes. The CMOS and TTL compatible inputs and outputs allow the device to interface with both modern 3.3 V control logic and legacy TTL-level front ends on the same board.
Рекомендуется
Cost-Optimized Consumer and Appliance Control
For appliances and consumer accessories, the ATF16LV8C-15PI consolidates several scattered gate packages into a single programmable device, reducing board area and assembly cost in volume production. The 250-gate equivalent capacity and eight macrocells suit typical motor-sequence, timer and mode-selection logic found in washing machines, fans and small kitchen appliances. Where these products run from a single 5 V rail, the device operates directly from that supply with CMOS and TTL compatible interfacing, so the logic needs no separate level translation and no dedicated regulator of its own.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ATF16LV8C-15PI — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Choose ATF16LV8C-15PC when the equipment is room-temperature commercial grade: it is electrically identical apart from temperature qualification and is often easier to find. Choose ATF16LV8C-10PI or ATF16LV8C-10PC when you need the additional 5 ns of timing headroom, for example in a fast memory-decode path, and confirm the faster edge rates do not create board-level ringing.
Choose ATF16V8B-15PC only when the pattern will be programmed once at manufacture and you want the lowest-cost OTP route. If none of these can be secured, move the function to a small CPLD or FPGA rather than designing new logic around a single obsolete PLD, and note that the ATF16LV8C family also exists in PLCC-20 and SOIC-20 packages that will not fit the existing through-hole footprint.
Сравнение с аналогами
| Параметр | Этот товар | ATF16LV8C-15PC | ATF16LV8C-10PI | ATF16LV8C-10PC | ATF16LV8C-10JU | ATF16V8B-15PC |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-PDIP | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same |
| Maximum Pin-to-Pin Delay | 15 ns | 15 ns | 10 ns | 10 ns | 10 ns | 15 ns |
| Number of Macrocells | 8 | 8 | 8 | 8 | 8 | 8 |
| Equivalent Gate Count | 250 gates | 250 gates | 250 gates | 250 gates | 250 gates | 250 gates |
| Programmable Type | EE PLD (electrically erasable, EECMOS flash) | EE PLD | EE PLD | EE PLD | EE PLD | OTP (one-time programmable) |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 5 V |
Ключевые отличия
- Industrial temperature grade in a through-hole package with legacy DIP mechanics (против ATF16LV8C-15PC)
- Extra timing margin over the 10 ns grades while keeping the same architecture (против ATF16LV8C-10PI)
- Field-reprogrammable flash architecture instead of one-time programmable (против ATF16V8B-15PC)
Заметки по проектированию
The most common failure in this family is a package-suffix mix-up. ATF16LV8C devices exist in 20-PDIP, PLCC-20 and SOIC-20 outlines, and only the -PI and -PC 20-PDIP options are footprint compatible with the target board. A PLCC-20 part will physically fit a DIP footprint position on paper but will not solder to through-hole pads. Verify the package code and the temperature code separately, and confirm the programmed pattern file matches the operating mode used by your design toolchain before ordering replacements.
Hold the power-down pin in its active state whenever the device does not need to drive its outputs, and keep the operating mode consistent with the pattern you programmed. The device is specified at a maximum of 5 uA in power-down mode with typical standby current of 100 nA, so a correct power sequence materially extends battery life in handheld or standby-dominant instruments. Do not leave /OE floating; drive it from a defined logic level so the eight outputs never sit in an indeterminate state during reset.
Place the decoupling capacitor between the VCC pin 19 and the GND pin 10 as close to the device as the layout allows, and route the ground return directly to the device ground pin rather than through a shared plane path used by switching stages. Because the outputs transition on a 15 ns grade and drive TTL-compatible loads, keep output traces short and away from analog or clock inputs to the same device. In through-hole designs, prefer a socket if the part may be replaced more than once.
The PD/CLOCK pin 1 participates in the feedback and configuration structure of the 16V8 architecture, so treat it as a timing-critical net even though it is functionally a mode control. Keep this net short, and avoid routing it alongside high-di/dt switching traces. When substituting the faster 10 ns grades, re-run the timing analysis: a faster device can expose hold-time and ringing problems that the slower 15 ns grade masked.
Информация о соответствии
The ATF16LV8C-15PI is an obsolete legacy EE PLD; RoHS, REACH, lead-free and halogen-free status for the exact suffix are not stated on the manufacturer product page and must be confirmed with the supplier at order time. The device is not an automotive part.
