EP1810LC-20T - Classic CPLD 900 Gates 48 Macrocells 5V PLCC-68 | Intel
MPN: EP1810LC-20T ✗ Cuối đờiEP1810LC-20T Tóm tắt
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits in the programmable-logic hierarchy between simple PLDs (PAL/GAL) and high-density FPGAs. The Classic EPLD architecture combines AND/OR array logic with a fixed, deterministic interconnect fabric and an EEPROM-based configuration memory, giving designers a glue-logic alternative to discrete TTL or CMOS gates for decoder, bus-interface, state-machine, and peripheral-control functions.
Key features of the EP1810LC-20T include 48 macrocells organized across four Logic Array Blocks (LABs) of 12 macrocells each, a sum-of-products (product-term) architecture with both combinatorial and registered (D-type flip-flop) outputs, and a JTAG-compliant IEEE 1149.1 boundary-scan interface for in-system programming and test. The 5 V core simplifies interface to legacy 5 V TTL logic without level shifters, and the PLCC-68 package offers socket-friendly field upgrades for prototype and production environments.
Architecturally, the device uses Altera's Classic MAX-style interconnect: each macrocell distributes product terms across the LAB and feeds an I/O pin through a tri-state output buffer. Configuration is stored in on-chip EEPROM, eliminating the need for an external boot PROM and providing instant-on operation at power-up. Programming is performed via the JTAG port or the older Altera Master/Slave serial interface.
Typical applications include 5 V bus-interface and address decoding in industrial control backplanes, glue-logic replacement for legacy 74-series designs, I/O expansion and timing-control blocks, state-machine and protocol-bridging logic, and small-scale register/buffer functions in test equipment. The non-volatile EEPROM configuration also makes it well-suited to safety-critical or boot-loader designs that must come up in a known state.
When designing with the EP1810LC-20T, ensure that all unused I/O pins are configured as outputs driving a defined logic level or as inputs with internal pull-ups enabled, to avoid supply-current transients. Decouple VCC with 0.1 microfarad ceramic capacitors placed within 5 mm of each VCC/GND pair, and observe the device's 5 V absolute-maximum rating when hot-plugging into mixed-voltage buses.
This page synthesizes distributor pricing, drop-in alternatives from the Altera Classic family, and practical design notes that go beyond the manufacturer datasheet, including pin-compatibility flags and engineering guidance for migrating to modern MAX-series replacements.
Bộ thay thế dễ dàng lắp đặt cho EP1810LC-20T — 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-20T (cùng hình factor và footprint) — khác nhau ở Mounting Type, Technology, Package, Operating Temperature, Family.
EP1810LC-20
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810LC-25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810LC-15
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EP1810GM883B
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810GM883
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810GI-45
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EP1810LC-20T Tỷ lệ tối đa & tính chất điện
| Family | Altera Classic EPLD |
| Product Type | CPLD (Complex Programmable Logic Device) |
| Usable Gates | 900 gates |
| Macrocells | 48 |
| Logic Array Blocks (LABs) | 4 x 12 macrocells |
| Maximum Toggle Frequency | 50 MHz |
| Pin-to-Pin Logic Delay (tPD) | 20 ns |
| Supply Voltage (VCC) | 5 V |
| Package Type | PLCC-68 (J-lead) |
| Kiểu lắp đặt | Surface Mount (socket-compatible) |
| Configuration Memory | On-chip EEPROM (non-volatile) |
| Programming Interface | JTAG (IEEE 1149.1) and Altera Master/Slave serial |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Shipping Format | Tape & Reel ("T" suffix) |
| Trạng thái RoHS | Non-compliant (legacy 5V PLCC) |
Cấu hình chân EP1810LC-20T
| Chân 1 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 2 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 3 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 4 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 5 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 6 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 7 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 8 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 9 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 10 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 11 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 12 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 13 | GND — Ground |
| Chân 14 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 15 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 16 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 17 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 18 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 19 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 20 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 21 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 22 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 23 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 24 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 25 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 26 | GND — Ground |
| Chân 27 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 28 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 29 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 30 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 31 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 32 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 33 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 34 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 35 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 36 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 37 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 38 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 39 | GND — Ground |
| Chân 40 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 41 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 42 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 43 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 44 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 45 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 46 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 47 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 48 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 49 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 50 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 51 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 52 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 53 | GND — Ground |
| Chân 54 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 55 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 56 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 57 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 58 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 59 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 60 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 61 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 62 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 63 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 64 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 65 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 66 | I/O — User I/O pin (macrocell bidirectional) |
| Chân 67 | VCC — 5V supply voltage |
| Chân 68 | VCC — 5V supply voltage |
Ứng dụng tiêu biểu
EP1810LC-20T phù hợp cho 6 Áp dụngs: 5V Bus Address Decoding, Glue Logic Replacement for 74-Series TTL, State Machine Controllers, I/O Expansion and Bus Bridging, Legacy Industrial Control Systems, Prototype and Education Boards.
5V Bus Address Decoding
The EP1810LC-20T is well-suited for 5 V bus address decoding in industrial backplanes and legacy ISA-style systems. Its 48 macrocells provide enough product-term logic to implement multi-chip-select decoders for memory banks and peripherals, while the 5 V VCC interface eliminates the need for level shifters when bridging to 5 V TTL devices. The 20 ns pin-to-pin delay suits system clocks up to 25 MHz. Unlike 3.3 V CPLDs, the EP1810LC-20T directly drives TTL loads without pull-ups, simplifying PCB routing and reducing BOM cost in 5 V-only designs.
Được đề xuất
Glue Logic Replacement for 74-Series TTL
Engineers use the EP1810LC-20T to consolidate dozens of 74LS/74HC glue-logic gates, muxes, and flip-flops into a single non-volatile device, freeing PCB area and reducing assembly cost. The Classic EPLD's product-term architecture maps directly onto standard SSI/MSI TTL functions, allowing straightforward migration from legacy schematics. With 48 macrocells the device can absorb a typical decode-and-control block in a single chip. Its on-chip EEPROM ensures the device powers up in the correct state, eliminating the boot-time race conditions possible with discrete flip-flop implementations.
Được đề xuất
State Machine Controllers
The EP1810LC-20T's registered macrocell output with D-type flip-flops makes it a strong fit for state-machine controllers in industrial controllers, vending machines, and test equipment. Each macrocell can implement one Moore or Mealy state bit, allowing the device to host a 48-state machine with combinatorial next-state logic in a single chip. The 50 MHz toggle frequency supports state-machine clock rates up to 40 MHz after timing margin. Combined with JTAG in-system programming, designers can iterate state tables quickly during development without replacing the device or reworking the PCB.
Được đề xuất
I/O Expansion and Bus Bridging
In I/O expansion and bus-bridging applications, the EP1810LC-20T can serve as a parallel-to-serial converter, bit-banging interface, or low-speed bus arbiter. The 68-pin PLCC provides up to 56 user I/O pins (after power and JTAG pins), sufficient for 16-bit data plus 8-bit address interfaces typical of legacy microcontrollers. The Classic EPLD's deterministic interconnect guarantees fixed propagation delays regardless of logic placement, simplifying worst-case timing analysis. Designers pair it with an MCU or DSP that lacks sufficient I/O, offloading peripheral control logic to the CPLD.
Được đề xuất
Legacy Industrial Control Systems
The EP1810LC-20T remains in service across long-life industrial control systems (PLCs, motor drives, instrumentation) that were designed in the 1990s and require field replacements. Its 5 V PLCC-68 footprint, EEPROM non-volatility, and 20 ns logic delay match the original design exactly. The Classic EPLD's tolerance to electrical noise and industrial-temperature variants (such as the EP1810GI-45) make it suitable for factory-floor environments. For systems with 10+ year field-life support obligations, the EP1810LC-20T is often the only drop-in option without an expensive board redesign.
Được đề xuất
Prototype and Education Boards
The EP1810LC-20T is widely used in university digital-logic laboratories and prototype boards because its PLCC-68 package fits a standard IC socket, allowing students to remove and reprogram the device repeatedly. Programming via JTAG with the legacy Altera ByteBlaster cable and MAX+PLUS II or Quartus software makes it accessible for teaching. The Classic EPLD's transparent architecture shows students direct mapping from logic equations to silicon, unlike modern LUT-based FPGAs that abstract away the underlying structure. Its low I/O count (56 user pins) and modest gate capacity keep introductory design examples tractable.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EP1810LC-20T — 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-20 | EP1810LC-25 | EP1810LC-15 | EP1810GM883B | EP1810GI-45 |
|---|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | PLCC-68 | PLCC-68 - same | PLCC-68 - same | PLCC-68 - same | PLCC-68 - same | PLCC-68 - same |
| Usable Gates | 900 | 900 | 900 | 900 | 900 | 900 |
| Macrocells | 48 | 48 | 48 | 48 | 48 | 48 |
| Pin-to-Pin Delay (tPD) | 20 ns | 20 ns | 25 ns (+25%) | 15 ns (-25%) | 20 ns | 45 ns (+125%) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Temperature Grade | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Military MIL-883B | Industrial (-40C to +85C) |
| Shipping Format | Tape & Reel | Tube | Tube or Tape & Reel | Tube or Tape & Reel | Tube | Tube |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete (military stock only) | Obsolete |
Bảo phân biệt quan trọng
- Tape-and-reel shipping format for automated assembly (vsEP1810LC-20)
- Balanced speed grade for 5V industrial designs (vsEP1810LC-25)
- Commercial temperature grade at lower cost (vsEP1810GM883B)
Ghi chú thiết kế
The EP1810LC-20T draws ICC in the range of 50-200 mA from a 5 V supply, with peaks during JTAG programming that can reach 300 mA. Decouple each VCC pin (1, 34, 68) with a 0.1 microfarat X7R ceramic capacitor placed within 5 mm of the pin, and add a single 10 microfarad tantalum or low-ESR electrolytic bulk capacitor at the board entry point. Inadequate decoupling causes voltage droops during EEPROM writes that can corrupt configuration. Place a ferrite bead in series with VCC if the device shares a supply with switching regulators.
The PLCC-68 socket footprint requires a through-hole PLCC socket (AMP 821574-1 or equivalent) for prototype work and field replacement. For production, hand-soldering or reflow of PLCC-68 is feasible but recommended only with a land pattern that includes extended pads. Keep all signal traces at least 3 mm from the socket body to avoid shorts, and route JTAG signals (TMS, TCK, TDI, TDO, nTRST) as a star from the JTAG connector directly to the device pins, with no stubs. Add a 10 kilohm pull-up on nCE (if exposed) to prevent accidental configuration at power-up.
Three common pitfalls when designing with the EP1810LC-20T: (1) leaving unused I/O pins floating creates output-driver contention and excess ICC; configure all unused pins in the MAX+PLUS II / Quartus software as outputs driving ground, or as inputs with internal pull-ups enabled. (2) The device is not hot-pluggable - if a partially inserted socket connects VCC before GND, latch-up can occur; add sequencing circuitry if hot-swap is required. (3) Do not exceed the 5 V absolute-maximum rating on any I/O pin, even briefly during system bring-up; use 5 V-tolerant buffers when interfacing to higher-voltage buses.
Thông tin tuân thủ
Legacy 5 V PLCC part produced before RoHS; uses tin-lead (SnPb) lead finish. Reach and conflict-mineral status not stated in manufacturer documentation. AEC-Q100 qualification not applicable for commercial-grade programmable logic in industrial/consumer use cases; military variants (EP1810GM883B) follow MIL-883B screening instead.
