EP1810LC-25T - 48-Macrocell Classic EPLD, 25ns, PLCC-28 | Intel
MPN: EP1810LC-25T ✗ Cuối đờiEP1810LC-25T Tóm tắt
A Complex Programmable Logic Device (CPLD) is a non-volatile, instant-on logic device that implements glue logic, interface bridging, and state machines using a sum-of-products (AND/OR) architecture backed by flash or EPROM configuration memory. EPLDs sit in the programmable logic hierarchy between simple SPLDs (PAL/GAL) and larger FPGAs, offering deterministic propagation delay, high input-to-output pin ratios, and excellent bus-holding capability — making them the industry standard for address decoding, bus arbitration, and peripheral interfacing in 5 V industrial systems.
The EP1810LC-25T's 48-macrocell density translates into roughly 900 usable gates, with TTL-compatible 5 V I/O, four global clock networks, and a nominal supply voltage of 5 V. The LC-25T speed grade corresponds to a 25 ns pin-to-pin propagation delay, the commercial operating range is 0 °C to 70 °C, and the package is the 28-pin PLCC (Plastic Leaded Chip Carrier) surface-mount form factor.
Typical applications include 5 V TTL/CMOS address decoding in legacy 8086/8051/Motorola 68k systems, peripheral bus interfacing (ISA, PC/104, STD bus), state-machine-based control logic, and bus arbitration glue logic. Designers value the device for its deterministic timing, single-chip non-volatile operation, and the ability to replace multiple discrete 74LS/74F-series TTL packages.
When designing with this EPLD, confirm that the 5 V VCC tolerance matches all attached logic families, allow adequate decoupling (100 nF plus 10 µF bulk) near the supply pins, and use the Altera MAX+PLUS II or Quartus Classic development flow for programming the OTP/EPROM cells. Note that the EP1810 series is now legacy and may require sourcing from authorized distributors; XAIPART provides traceable stock for production continuity.
This page synthesizes distributor pricing across 12 channels, drop-in alternatives including the commercial EP1810LC-25, EP1810LC-20 and EP1810LC-20T variants, and practical design notes not found in the original manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho EP1810LC-25T — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EP1810LC-25T (cùng hình factor và footprint) — khác nhau ở Package, Technology, Supply Voltage (VCC), Family, Mounting Type.
EP1810LC-25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810LC-20T
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810LC-20
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810JC-25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810JC35
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810LC-25T Tỷ lệ tối đa & tính chất điện
| Family | Altera Classic EP1810 |
| Device Type | EPLD (Erasable/OTP Complex PLD) |
| Macrocells | 48 (4 quadrants x 12 macrocells) |
| Usable Gates | Approx. 900 |
| Dedicated Inputs | 16 |
| Bidirectional I/O Pins | 48 |
| External Clocks | 4 |
| Propagation Delay (tPD) | 25 ns |
| Supply Voltage (VCC) | 5 V nominal |
| Nhiệt độ hoạt động | 0 °C to +70 °C (commercial) |
| Hộp | 28-pin J-lead PLCC (Plastic Leaded Chip Carrier) |
| Kiểu lắp đặt | Surface Mount |
| Technology | CMOS, UV-erasable / OTP |
| I/O Standard | TTL-compatible 5 V |
| Programming Tool | Altera MAX+PLUS II / Quartus Classic |
Hướng dẫn cấu hình chân EP1810LC-25T 28-pin j-lead plcc (plastic leaded chip carrier)
Cấu hình chân cho EP1810LC-25T (28-pin j-lead plcc (plastic leaded chip carrier) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho EP1810LC-25T.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
EP1810LC-25T phù hợp cho 6 Áp dụngs: 5V TTL Address Decoding, Peripheral Bus Glue Logic, State Machine Control Logic, Bus Arbitration & DMA Control, Industrial 5V Control Boards, Legacy Communication Interfaces.
5V TTL Address Decoding
The EP1810LC-25T is widely deployed as a 5 V TTL address decoder in legacy 8086, 8051, and Motorola 68k microprocessor systems where deterministic 25 ns tPD and non-volatile instant-on behavior are required. Its 48 macrocells easily absorb full 16-bit or 24-bit address-decode trees for memory and peripheral chip-select generation, replacing multiple 74LS138/74F139 decoder packages with a single device. The 5 V TTL-compatible I/O interfaces directly to the processor bus without level shifters, and the 28-pin PLCC footprint fits standard 5 V through-hole and SMT adapter boards used in industrial control cards.
Được đề xuất
Peripheral Bus Glue Logic
The EP1810LC-25T excels as glue logic on PC/104, ISA, and STD peripheral buses where 5 V signalling, deterministic timing, and high I/O count are essential. Its 48 bidirectional I/O pins handle read/write strobe generation, interrupt acknowledgement, DMA arbitration, and chip-select multiplexing for multi-peripheral cards, while the 25 ns tPD comfortably meets the 8 MHz ISA bus timing budget. Designers use the EPLD's non-volatile configuration to ship production cards without separate boot PROMs, simplifying BOM and reducing board area on legacy industrial PCs.
Được đề xuất
State Machine Control Logic
The 48 macrocells and deterministic timing of the EP1810LC-25T make it an ideal host for medium-complexity state machines controlling industrial stepper drives, scanner mechanisms, and legacy telecom line cards. Each macrocell provides a programmable flip-flop with sum-of-products logic, allowing multi-state Mealy or Moore machines to be implemented entirely in non-volatile silicon that powers up instantly into a known state. The 25 ns tPD plus 4 global clock networks enable synchronous designs up to roughly 20 MHz, sufficient for many motor-control and instrumentation loops.
Được đề xuất
Bus Arbitration & DMA Control
Multi-master 5 V systems such as VMEbus, Multibus, and proprietary backplanes use the EP1810LC-25T to implement bus arbitration, DMA handshaking, and grant-chain logic in a single non-volatile device. The 16 dedicated inputs accommodate bus-request, bus-grant, and acknowledge lines from multiple masters, while the 48 I/O pins drive grant chains and DMA control signals. Deterministic 25 ns propagation is critical for arbitration latency in Multibus-II environments where multiple CPUs contend for the bus in tightly bounded cycles.
Được đề xuất
Industrial 5V Control Boards
Factory-floor PLCs, CNC controllers, and process-instrumentation boards use the EP1810LC-25T to consolidate discrete 74LS glue logic, address decoding, and timing generation into one rugged 28-pin PLCC. The commercial 0 °C to 70 °C operating range covers most indoor cabinet environments, while the 5 V supply matches legacy analog front-ends and 5 V op-amps that dominate industrial analog I/O subsystems. The OTP/UV-erasable architecture provides field-upgradeable logic for low-volume industrial SKUs without requiring full FPGA toolchain expertise.
Được đề xuất
Legacy Communication Interfaces
The EP1810LC-25T is used to implement glue logic for parallel-communication peripherals such as Centronics ports, IEEE-488 (GPIB) controllers, and SCSI-1 parallel interfaces that remain common in test-and-measurement equipment. Its 48 I/O pins implement handshake line generation, data-bus buffering control, and device-select decoding with deterministic timing, while the 5 V TTL interface matches legacy peripheral ICs without voltage translation. Designers benefit from consolidating up to a dozen discrete 74LS packages into a single instant-on device, simplifying EMI compliance on long parallel cables.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EP1810LC-25T — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | EP1810LC-25 | EP1810LC-20T | EP1810LC-20 | EP1810JC-25 | EP1810JC35 |
|---|---|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel | Intel | Intel |
| Package | PLCC-28 (J-lead) | PLCC-28 (J-lead) - same | PLCC-28 (J-lead) - same | PLCC-28 (J-lead) - same | PLCC-28 (J-lead) - same | PLCC-28 (J-lead) - same |
| Propagation Delay (tPD) | 25 ns | 25 ns | 20 ns (-20%) | 20 ns (-20%) | 25 ns | 35 ns (+40%) |
| Macrocells | 48 | 48 | 48 | 48 | 48 | 48 |
| Dedicated Inputs | 16 | 16 | 16 | 16 | 16 | 16 |
| Bidirectional I/O | 48 | 48 | 48 | 48 | 48 | 48 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Operating Temperature | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C |
| Packaging Carrier | Tape & Reel | Tray/Tube | Tape & Reel | Tray/Tube | Tray/Tube | Tray/Tube |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Faster propagation delay than 35 ns alternative (vsEP1810JC35)
- Tape-and-reel carrier for SMT production (vsEP1810LC-25)
- Higher speed than 25 ns grade at marginal cost (vsEP1810JC-25)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor as close as physically possible to each VCC pin of the EP1810LC-25T, plus a 10 µF tantalum or aluminum bulk capacitor within 25 mm of the device. The 5 V supply must remain within ±5 % tolerance during programming and operation; UV-erase retention and macrocell reliability depend on a stable rail. Estimated: at 5 V VCC with all 48 I/O pins switching CMOS loads at 10 MHz, expect roughly 150–250 mA peak supply current — design the regulator with at least 2× headroom for transient load steps.
Keep all I/O traces shorter than 50 mm when driving capacitive buses; if longer runs are unavoidable, add a 22–33 Ω series-damping resistor at the EPLD output to suppress transmission-line ringing on the 5 V TTL edges. The PLCC-28 socket footprint should be on a continuous ground pour on the inner layer to provide low-impedance return paths for the simultaneous-switching outputs (SSO). Estimated: SSO of 16 outputs at 25 ns edges can generate ~1 V of ground bounce if the ground pour is split.
Do not apply signals to the EP1810LC-25T I/O pins before VCC reaches 4.5 V — latch-up can occur because the device has 5 V-only CMOS I/O without 3.3 V tolerance. Use a power-good supervisor or RC delay to ensure input signals are released only after the EPLD rail is stable. Also note that OTP programming fuses cannot be reset in the PLCC package (no UV window); design iterations require a fresh device each time or a windowed LCC ceramic variant for laboratory use.
Thông tin tuân thủ
RoHS and REACH status were not present in the verified web data and are marked as [DATA_NEEDED]; confirm with the manufacturer before use in Pb-free assemblies. The EP1810 series is a legacy Altera/Intel family and the 28-pin PLCC package historically used tin-lead (SnPb) lead finish on production parts.
