EP1810JC-25 - 48-Macrocell Classic EPLD, 25ns tPD | Intel
Référence : EP1810JC-25 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $10.85 | $108,50 |
| 100 | $9.2 | $920,00 |
| 500 | $7.95 | $3 975,00 |
| 1 000 | $6.8 | $6 800,00 |
EP1810JC-25 Présentation
A Classic EPLD (Erasable Programmable Logic Device) is a member of the programmable logic family that sits between simple PAL/GAL devices and modern CPLDs/FPGAs in the design hierarchy. Like all EPLDs, the EP1810JC-25 is non-volatile (in its windowed ceramic form, erasable with UV light), deterministic in timing (fixed pin-to-pin delays), and ideal for decoder, bus-interface, and state-machine glue logic. The Classic EPLD family was Altera's first-generation architecture, predating MAX 7000 and MAX II series.
Key specifications include 48 macrocells of AND/OR logic, a worst-case propagation delay (tPD) of 25 ns, and a maximum toggle frequency of roughly 50 MHz. The device operates from a single 4.75 V to 5.25 V supply and is offered in industrial temperature grades suitable for -40 °C to 85 °C operation. The ceramic windowed DIP package allows designers to erase and re-program the device under a UV eraser, making the -25 speed grade useful for prototyping and low-volume production.
The architecture is a sum-of-products PLA-style fabric with each macrocell containing a programmable AND array feeding a fixed OR term, an output flip-flop, and a tri-state output buffer. Configurable output enables and feedback paths allow each macrocell pin to be used as input, output, or bidirectional I/O. Four dedicated global clock pins synchronize internal registers, eliminating skew issues common to discrete flip-flop designs.
Typical applications include address decoding for 8086/Motorola 68000 microprocessor systems, bus arbitration, peripheral interface glue logic, industrial control state machines, and legacy telecom backplane controllers. Designers also use the EP1810JC-25 for hardware emulation of standard logic functions in board bring-up and for replacing obsolete 24-pin/28-pin PAL devices with greater logic density.
When designing with this EPLD, remember that the ceramic DIP -25 speed grade is the slowest in the EP1810 family and is most often used for prototyping rather than production volume. Modern designs requiring the same logic should evaluate MAX 7000AE or MAX II CPLDs as functional successors, since the Classic EPLD family has been NRND for many years.
This page synthesizes distributor pricing, drop-in compatible alternatives across speed grades, and practical design notes not found in the original Altera datasheet, providing information-gain content beyond what manufacturer or distributor pages typically offer.
Alternatives de remplacement direct pour EP1810JC-25 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EP1810JC-25 (même facteur de forme et même empreinte) — différant par Package, Mounting Type, Operating Temperature, Technology, Device Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EP1810GM883B
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$125.4 / unité
Voir la fiche technique →EP1810GM883
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$175 / unité
Voir la fiche technique →EP1810GM/883B
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$49.75 / unité
Voir la fiche technique →EP1810GI-45
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$56.4 / unité
Voir la fiche technique →EP1810GC-35AB
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$9.95 / unité
Voir la fiche technique →EP1810GC-35
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$177.12 / unité
Voir la fiche technique →EP1810JC-25 Valeurs maximales et caractéristiques électriques
| Product Type | Classic EPLD (Erasable Programmable Logic Device) |
| Family | Altera/Intel Classic EPLD (EP1810 series) |
| Macrocells | 48 |
| Propagation Delay (tPD) | 25 ns |
| Input Lines | 60 (including I/O) |
| I/O Lines | 48 |
| Dedicated Inputs | 12 |
| External Clock Inputs | 4 |
| Supply Voltage (VCC) | 4.75 V to 5.25 V |
| Température de fonctionnement | -40 °C to 85 °C (industrial, per distributor listings) |
| Technology | CMOS, UV-erasable (windowed ceramic DIP) |
| Boîtier | 28-pin ceramic DIP (J) with quartz window |
| Type de montage | Through-hole |
| Erasure Method | UV light (windowed package) |
| Statut du cycle de vie | NRND (Not Recommended for New Designs) |
Configuration des broches de EP1810JC-25
| Broche 1 | I/O — Macrocell I/O pin (multi-function) |
| Broche 2 | I/O — Macrocell I/O pin (multi-function) |
| Broche 3 | I/O — Macrocell I/O pin (multi-function) |
| Broche 4 | I/O — Macrocell I/O pin (multi-function) |
| Broche 5 | I/O — Macrocell I/O pin (multi-function) |
| Broche 6 | I/O — Macrocell I/O pin (multi-function) |
| Broche 7 | I/O — Macrocell I/O pin (multi-function) |
| Broche 8 | I/O — Macrocell I/O pin (multi-function) |
| Broche 9 | I/O — Macrocell I/O pin (multi-function) |
| Broche 10 | GND — Ground |
| Broche 11 | I/O — Macrocell I/O pin (multi-function) |
| Broche 12 | I/O — Macrocell I/O pin (multi-function) |
| Broche 13 | I/O — Macrocell I/O pin (multi-function) |
| Broche 14 | I/O — Macrocell I/O pin (multi-function) |
| Broche 15 | IN — Dedicated input |
| Broche 16 | IN — Dedicated input |
| Broche 17 | IN — Dedicated input |
| Broche 18 | IN — Dedicated input |
| Broche 19 | IN — Dedicated input |
| Broche 20 | IN — Dedicated input |
| Broche 21 | CLK — Global clock input |
| Broche 22 | CLK — Global clock input |
| Broche 23 | CLK — Global clock input |
| Broche 24 | CLK — Global clock input |
| Broche 25 | I/O — Macrocell I/O pin (multi-function) |
| Broche 26 | I/O — Macrocell I/O pin (multi-function) |
| Broche 27 | I/O — Macrocell I/O pin (multi-function) |
| Broche 28 | VCC — +5 V supply |
Applications typiques
EP1810JC-25 convient pour 6 applications: Microprocessor Address Decoding, Bus Arbitration and Interface Glue Logic, Industrial Control State Machines, Legacy Peripheral Interface Adapters, Telecom Backplane Controllers, Prototype Hardware Logic Emulation.
Microprocessor Address Decoding
The EP1810JC-25's 48 macrocells and 60 input lines make it well-suited to decoding full 20-bit address buses on 8086, 68000, and Z80 microprocessor boards. Its deterministic 25 ns propagation delay fits within typical memory-access timing budgets, and four dedicated clock inputs simplify generation of qualified chip-select strobes. Designers replace stacks of 74LS138/139 decoders with a single erasable device, simplifying PCB layout and reducing component count by 5-10x on memory-mapped designs.
Recommandé
Bus Arbitration and Interface Glue Logic
Multi-master VMEbus, Multibus, and STD-bus backplanes historically used the EP1810JC-25 to arbitrate DMA requests, generate wait-state insertion, and bridge between processor buses and peripheral controllers. The 48 macrocells absorb handshake, ready, and grant logic that would otherwise require a dozen PAL devices, and the 5 V TTL-compatible I/O directly interfaces with 74LS and 74F bus transceivers without level shifters. Erasability allows in-the-field logic revision as bus standards evolve.
Recommandé
Industrial Control State Machines
Factory-automation controllers in the 1990s and 2000s used the EP1810JC-25 to implement sequential state machines for conveyor control, packaging machinery, and process-line sequencing. Its 48 macrocells encode 8-12-state Mealy or Moore machines with combinational outputs, while the deterministic timing guarantees predictable response to limit-switch and encoder inputs. The windowed ceramic DIP package supports field re-programming when production sequences change.
Recommandé
Legacy Peripheral Interface Adapters
The EP1810JC-25 bridges parallel-port peripherals, GPIB/IEEE-488 instrumentation buses, and SCSI-1 controllers to ISA and STD-bus host processors by generating protocol handshakes, encoding/decoding command bytes, and managing data-transfer state. Its 48 I/O lines accommodate the 8-bit data bus plus 8-12 control and status signals of typical peripheral interfaces, while the 25 ns delay meets standard peripheral-timing requirements without inserting wait states.
Recommandé
Telecom Backplane Controllers
Legacy telecom backplanes (T1/E1 multiplexers, channel banks, central-office switches) used the EP1810JC-25 to implement alarm-collection logic, time-slot switching, and DS1/DS3 framing state machines. The five-volt operation matches the negative-48 V battery plant-derived logic rails common in central offices, and the ceramic-DIP package survives the thermal and vibration stresses of telecom equipment rooms. Modern replacements use FPGAs or ASICs, but the EP1810JC-25 remains in service-spare inventories worldwide.
Recommandé
Prototype Hardware Logic Emulation
Engineers prototyping new boards often use the EP1810JC-25 as a quick-turn logic emulator: a Boolean design is compiled into JEDEC fuse-map files, programmed with an Altera programming card, and dropped into a 28-pin socket on a prototype PCB. This workflow lets engineers validate logic before committing to gate-array or ASIC NRE charges. The windowed ceramic package supports dozens of erase/reprogram cycles during iterative debug, making the EP1810JC-25 a staple of university and R&D labs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EP1810JC-25 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EP1810GM883B | EP1810GM883 | EP1810GM/883B | EP1810GI-45 | EP1810GC-35AB |
|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) |
| Package | 28-pin ceramic DIP (J) with UV window | 28-pin ceramic DIP (J) with UV window - same | 28-pin ceramic DIP (J) with UV window - same | 28-pin ceramic DIP (J) with UV window - same | 28-pin ceramic DIP (J) with UV window - same | 28-pin ceramic DIP (J) with UV window - same |
| Propagation Delay (tPD) | 25 ns | 25 ns | 25 ns | 25 ns | 45 ns | 35 ns |
| Macrocells | 48 | 48 | 48 | 48 | 48 | 48 |
| I/O Lines | 48 | 48 | 48 | 48 | 48 | 48 |
| Dedicated Inputs | 12 | 12 | 12 | 12 | 12 | 12 |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Temperature Grade | -40 °C to 85 °C (industrial) | -55 °C to 125 °C (military) | -55 °C to 125 °C (military) | -55 °C to 125 °C (military, 883B) | -40 °C to 85 °C (industrial) | Commercial (per 'C' suffix) |
| MIL-STD-883 Screening | No | Yes (883B) | Yes (883) | Yes (883B) | No | No |
Principaux différenciateurs
- Windowed ceramic DIP enables UV erasure and reprogramming for prototyping (vs EP1810GC-35AB)
- Industrial temperature range with ceramic-package reliability (vs EP1810GM/883B)
- Faster 25 ns tPD grade for timing-margin-sensitive designs (vs EP1810GI-45)
Notes de conception
The 28-pin ceramic DIP package requires through-hole PCB mounting with a 0.1 µF decoupling capacitor placed within 5 mm of the VCC pin (pin 28) to suppress switching transients. Add a bulk 10 µF tantalum capacitor at the board's 5 V rail entry point to handle simultaneous-output switching of all 48 macrocells, which can demand 200-400 mA peak current in worst-case patterns. Keep clock traces (pins 21-24) short and shielded with ground guard traces to preserve signal integrity up to 50 MHz.
Do not substitute plastic-DIP (N-suffix) variants of the EP1810 for the JC-windowed package without verifying erase-cycle support; OTP plastic packages cannot be re-programmed. Also note that the EP1810 family is NRND and will not receive Altera/Intel's modern design-tool support, so designers must use legacy MAX+PLUS II or classic AHDL toolchains. Programming files (.pof) generated for newer MAX devices are NOT compatible with EP1810 JEDEC fuse maps.
When interfacing the EP1810JC-25's TTL outputs to modern 3.3 V CMOS devices, insert a 74HCT244 or similar 5 V-to-3.3 V level translator on each shared signal line. Direct connection risks CMOS input over-voltage and latch-up. For clock-distribution applications using the four global clock pins, place a 33 Ω series-termination resistor within 25 mm of the EP1810 clock output to dampen reflections on cables or backplane traces.
Informations de conformité
RoHS/REACH compliance status not explicitly stated in the verified web data for this NRND legacy part; many Altera ceramic-windowed DIPs from this era contain lead-bearing solder and are not RoHS-compliant. AEC-Q100 not applicable - this is a programmable logic device, not an automotive analog IC.
