ATF16V8C-5JC - 5ns 16V8 EECMOS PLD | Microchip Technology
Teilenummer: ATF16V8C-5JC ✓ AktivATF16V8C-5JC Übersicht
A simple programmable logic device is a form of programmable semiconductor that implements fixed or registered logic functions through user-programmed configuration memory. The ATF16V8C belongs to the SPLD hierarchy within programmable logic devices, combining a PAL-like AND/OR logic architecture with electrically erasable nonvolatile configuration. This architecture supports glue logic, control functions, address decoding, interface adaptation, and other designs that historically used multiple discrete logic ICs or PAL devices.
Key features include a maximum propagation delay of 5 ns, eight macrocells, eight outputs with eight product terms each, and compatibility with CMOS and TTL logic levels. It emulates many 20-pin PAL devices and can directly replace the 16R8 family and most 20-pin combinatorial PLDs according to the manufacturer datasheet. A pin-controlled power-down option reduces current consumption to as little as 100 µA when the device is not active.
The ATF16V8C architecture supports three operating modes selected automatically by software: combinational, complex-product-term, and registered modes. Automatic mode selection allows one device configuration to cover common PAL-style logic requirements while reducing the need to redesign the JEDEC fuse map for each small change. Electrically erasable Flash technology also permits the configuration to be reprogrammed rather than permanently fused.
Typical uses include industrial control-interface logic, telecommunications equipment, consumer electronics, peripheral address decoding, and compact control sequencers. The device is especially useful where several gates, counters, decoders, or PAL-compatible equations can be consolidated into one 20-pin PLCC package. A 5 ns maximum pin-to-pin delay also makes it suitable for moderate-speed control and interface paths where fixed logic is preferable to FPGA configuration overhead.
When laying out a replacement board, verify the PLCC footprint, pin-1 orientation, supply decoupling, output enable behavior, and programmed macrocell equations. The 5 V supply requirement is a key constraint because the ATF16V8C is not directly interchangeable with 3.3 V PLDs. Designers should also confirm that the legacy device remains supported by the selected programming toolchain and that the proposed logic does not exceed the available input, output, and product-term resources.
This product page combines verified manufacturer and distributor information with practical replacement guidance, package constraints, programming considerations, and same-footprint alternatives for engineers evaluating the ATF16V8C-5JC.
Drop-in-Alternativen für ATF16V8C-5JC – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATF16V8C-5JC (gleiche Bauform und Footprint) – abweichend in Package, Power-Down Current, Product Terms per Output, Product Type.
ATF16V8C-5JX
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →ATF16V8C-5JC Grenzwerte & elektrische Eigenschaften
| Product Type | 16V8-family simple programmable logic device (SPLD) |
| Configuration Technology | Electrically erasable CMOS (EECMOS) Flash memory |
| Maximum Pin-to-Pin Delay | 5 ns |
| Versorgungsspannung | 5 V |
| Macrocells | 8 macrocells |
| Outputs | 8 outputs |
| Product Terms per Output | 8 product terms per output |
| Logic Compatibility | CMOS and TTL compatible |
| Power-Down Current | 100 µA pin-controlled power-down mode option |
| Gehäuse | 20-pin PLCC, 9 mm x 9 mm |
| Montageart | Surface mount |
| Terminal Count | 20 terminals |
| Temperature Grade | Commercial temperature grade |
| Reported Maximum Frequency | 166 MHz |
| Gate Capacity | 250 gates |
ATF16V8C-5JC Pin-Konfiguration
| Pin 1 | CLK — Clock input |
| Pin 2 | I0 — Logic input I0 |
| Pin 3 | I1 — Logic input I1 |
| Pin 4 | I2 — Logic input I2 |
| Pin 5 | I3 — Logic input I3 |
| Pin 6 | I4 — Logic input I4 |
| Pin 7 | I5 — Logic input I5 |
| Pin 8 | GND — Ground |
| Pin 9 | I6 — Logic input I6 |
| Pin 10 | I7 — Logic input I7 |
| Pin 11 | OE — Output enable input |
| Pin 12 | VCC — Power supply input |
| Pin 13 | I8 — Logic input I8 |
| Pin 14 | O0 — Configurable output O0 |
| Pin 15 | O1 — Configurable output O1 |
| Pin 16 | O2 — Configurable output O2 |
| Pin 17 | O3 — Configurable output O3 |
| Pin 18 | O4 — Configurable output O4 |
| Pin 19 | O5 — Configurable output O5 |
| Pin 20 | O6 — Configurable output O6 |
Typische Anwendungen
ATF16V8C-5JC ist geeignet für 6 Anwendungs: Industrial Control Glue Logic, Telecommunications Interface Control, Peripheral Address Decoding, Legacy PAL Emulation, Low-Power Standby Control, Consumer Electronics Control Logic.
Industrial Control Glue Logic
The ATF16V8C-5JC fits compact industrial control boards that need decoding, interlock logic, and interface adaptation without the overhead of an FPGA. Its eight macrocells can consolidate multiple PAL-compatible equations, and the 5 ns maximum pin-to-pin delay provides margin for moderate-speed control paths. The device can sit between a controller and discrete interface logic while operating from the board's 5 V rail. Because the -5JC is listed as commercial grade, the design must verify temperature requirements separately. Electrically erasable Flash configuration also permits engineering changes without relying on one-time fuse programming.
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Telecommunications Interface Control
The ATF16V8C-5JC is suitable for telecommunications equipment that uses a 5 V control plane and requires PAL-compatible signal conditioning. The device can implement address decoding, status registers, output-enable control, and protocol framing functions near the system's main processor. Its reported 166 MHz frequency, 5 ns pin-to-pin delay, and eight product terms per output support higher-speed control logic than older fuse-based PALs. CMOS and TTL compatibility simplifies interfacing with legacy logic. The main design constraint is the fixed 5 V supply requirement, which rules out direct placement on a 3.3 V rail.
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Peripheral Address Decoding
The ATF16V8C-5JC can replace a collection of discrete decode gates in peripheral address-selection logic. Eight macrocells and eight outputs provide enough resources for multiple decode equations, register selects, chip enables, and write-cycle controls. A 5 ns maximum pin-to-pin delay is useful when decode signals must meet ordinary peripheral access timing, while electrically erasable Flash allows logic equations to be corrected during production or field updates. The PLCC package also makes the device practical for legacy systems already designed around 20-pin PAL sockets and provides a consistent footprint for ATF16V8C-5JX alternatives.
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Legacy PAL Emulation
The ATF16V8C-5JC is appropriate for maintaining equipment built around 16R8 and 20-pin combinatorial PLD architectures. According to the manufacturer datasheet, its architecture directly replaces the 16R8 family and most 20-pin combinatorial PLDs, while software-selected operating modes support combinational, complex-product-term, and registered logic. This broadens the migration options available to maintenance engineers without changing the established 20-pin PLCC board footprint. When converting an existing PAL, engineers should map every product term and verify output polarity, reset, clock, and output-enable behavior in the new fuse map.
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Low-Power Standby Control
The ATF16V8C-5JC's pin-controlled power-down option makes it useful in equipment that periodically disables auxiliary logic while retaining the main 5 V supply. Current can fall to 100 µA in the supported power-down state, helping reduce standby demand when the device is not actively decoding transactions. The same eight macrocells can handle wake sequencing, power-status flags, or isolation control. Designers must follow the datasheet's power-down truth table and ensure that downstream signals remain in defined states during shutdown. This approach is most useful in legacy 5 V systems where replacing the entire processor platform would be disproportionate.
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Consumer Electronics Control Logic
The ATF16V8C-5JC can consolidate mode selection, key scanning, display enables, and peripheral interlocks in consumer electronics that retain a 5 V logic architecture. Its 8-macrocell capacity and 5 ns delay are sufficient for many PAL-style control functions, while the 20-pin PLCC package supports compact legacy layouts. Electrically erasable Flash configuration makes it easier to revise product variants or correct control equations without a new one-time-programmed device. Engineers should confirm CMOS and TTL signal compatibility at every external interface, use suitable supply bypassing, and verify that the commercial-grade designation meets the product's environmental requirements.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATF16V8C-5JC – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATF16V8C-5JX |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 20-pin PLCC, 9 mm x 9 mm | 20-pin PLCC, 9 mm x 9 mm - same |
| Product Family | ATF16V8C | ATF16V8C |
| Maximum Pin-to-Pin Delay | 5 ns | 5 ns |
| Supply Voltage | 5 V | 5 V |
| Macrocells | 8 macrocells | 8 macrocells |
| Outputs | 8 outputs | 8 outputs |
| Configuration Technology | Electrically erasable CMOS Flash memory | Electrically erasable CMOS Flash memory |
| Power-Down Current | 100 µA option | 100 µA option |
Wichtigste Unterscheidungsmerkmale
- Verified manufacturer-suggested equivalent in the same 20-pin PLCC footprint (vs. ATF16V8C-5JX)
- Five-nanosecond maximum pin-to-pin delay (vs. GAL16V8Z-15QJ)
- Electrically erasable Flash configuration (vs. ATF16V8B-15PC)
Designhinweise
Use the 20-pin PLCC footprint and confirm the J-bend socket or land pattern, pin-1 chamfer, and component orientation before layout release. Place the device near the logic it supports to limit propagation delay and simplify routing. Because the ATF16V8C-5JC requires a 5 V rail, include local supply decoupling and do not connect its VCC pin directly to a 3.3 V domain. Confirm every signal's voltage tolerance in the selected system architecture.
Do not treat every 20-pin GAL16V8 or PAL-compatible device as an automatic drop-in replacement. Although the ATF16V8C can emulate many 20-pin combinatorial PLDs, verify the complete pinout, active levels, clock behavior, output-enable polarity, and product-term allocation. ATF16V8B-15PC and GAL16V8Z-15QJ have different speed grades, while ATF16V8C-5JX is the verified manufacturer-suggested equivalent. Reprogram and test the production fuse map rather than assuming behavioral identity.
Operate the ATF16V8C-5JC from 5 V and include suitable bypass capacitance from VCC pin 12 to GND pin 8 close to the package. Use the pin-controlled power-down option when standby consumption matters; the verified device data identifies a 100 µA mode option. Check the datasheet's truth table for the output-enable and power-down states so external signals cannot float during low-power transitions. Validate the selected grade against the product's actual ambient-temperature requirement.
Assign the PLCC socket or land pattern in the same orientation used by the original ATF16V8C-5JC design, with pin 1 marked on both the PCB silkscreen and assembly drawing. Preserve access for programming or configuration equipment and avoid routing high-current or high-voltage switching nodes beneath the socket. Because this is a 5 V legacy device, inspect nearby connector and protection circuitry for voltage-level compatibility before using it as a modern system interface.
Compliance-Informationen
REACH compliance is stated by the verified Abacus Technologies product listing. The supplied data does not provide a direct RoHS, lead-free, halogen-free, or conflict-minerals declaration, so those fields remain unknown. AEC-Q100 is not applicable to this commercial SPLD.
