EP1810LC-20T - Classic CPLD 900 Gates 48 Macrocells 5V PLCC-68 | Intel
MPN: EP1810LC-20T ✗ اختتامِ زندگیEP1810LC-20T جائزہ
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.
کے لیے ڈراپ اِن متبادل EP1810LC-20T — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں EP1810LC-20T (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Mounting Type, Technology, Package, Operating Temperature, Family.
EP1810LC-20
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP1810LC-25
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP1810LC-15
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
EP1810GM883B
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP1810GM883
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP1810GI-45
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EP1810LC-20T زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| 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) |
| ماؤنٹنگ ٹائپ | Surface Mount (socket-compatible) |
| Configuration Memory | On-chip EEPROM (non-volatile) |
| Programming Interface | JTAG (IEEE 1149.1) and Altera Master/Slave serial |
| آپریٹنگ درجہ حرارت | 0C to +70C (commercial) |
| Shipping Format | Tape & Reel ("T" suffix) |
| RoHS اسٹیٹس | Non-compliant (legacy 5V PLCC) |
EP1810LC-20T پن کنفیگریشن
| پن 1 | I/O — User I/O pin (macrocell bidirectional) |
| پن 2 | I/O — User I/O pin (macrocell bidirectional) |
| پن 3 | I/O — User I/O pin (macrocell bidirectional) |
| پن 4 | I/O — User I/O pin (macrocell bidirectional) |
| پن 5 | I/O — User I/O pin (macrocell bidirectional) |
| پن 6 | I/O — User I/O pin (macrocell bidirectional) |
| پن 7 | I/O — User I/O pin (macrocell bidirectional) |
| پن 8 | I/O — User I/O pin (macrocell bidirectional) |
| پن 9 | I/O — User I/O pin (macrocell bidirectional) |
| پن 10 | I/O — User I/O pin (macrocell bidirectional) |
| پن 11 | I/O — User I/O pin (macrocell bidirectional) |
| پن 12 | I/O — User I/O pin (macrocell bidirectional) |
| پن 13 | GND — Ground |
| پن 14 | I/O — User I/O pin (macrocell bidirectional) |
| پن 15 | I/O — User I/O pin (macrocell bidirectional) |
| پن 16 | I/O — User I/O pin (macrocell bidirectional) |
| پن 17 | I/O — User I/O pin (macrocell bidirectional) |
| پن 18 | I/O — User I/O pin (macrocell bidirectional) |
| پن 19 | I/O — User I/O pin (macrocell bidirectional) |
| پن 20 | I/O — User I/O pin (macrocell bidirectional) |
| پن 21 | I/O — User I/O pin (macrocell bidirectional) |
| پن 22 | I/O — User I/O pin (macrocell bidirectional) |
| پن 23 | I/O — User I/O pin (macrocell bidirectional) |
| پن 24 | I/O — User I/O pin (macrocell bidirectional) |
| پن 25 | I/O — User I/O pin (macrocell bidirectional) |
| پن 26 | GND — Ground |
| پن 27 | I/O — User I/O pin (macrocell bidirectional) |
| پن 28 | I/O — User I/O pin (macrocell bidirectional) |
| پن 29 | I/O — User I/O pin (macrocell bidirectional) |
| پن 30 | I/O — User I/O pin (macrocell bidirectional) |
| پن 31 | I/O — User I/O pin (macrocell bidirectional) |
| پن 32 | I/O — User I/O pin (macrocell bidirectional) |
| پن 33 | I/O — User I/O pin (macrocell bidirectional) |
| پن 34 | I/O — User I/O pin (macrocell bidirectional) |
| پن 35 | I/O — User I/O pin (macrocell bidirectional) |
| پن 36 | I/O — User I/O pin (macrocell bidirectional) |
| پن 37 | I/O — User I/O pin (macrocell bidirectional) |
| پن 38 | I/O — User I/O pin (macrocell bidirectional) |
| پن 39 | GND — Ground |
| پن 40 | I/O — User I/O pin (macrocell bidirectional) |
| پن 41 | I/O — User I/O pin (macrocell bidirectional) |
| پن 42 | I/O — User I/O pin (macrocell bidirectional) |
| پن 43 | I/O — User I/O pin (macrocell bidirectional) |
| پن 44 | I/O — User I/O pin (macrocell bidirectional) |
| پن 45 | I/O — User I/O pin (macrocell bidirectional) |
| پن 46 | I/O — User I/O pin (macrocell bidirectional) |
| پن 47 | I/O — User I/O pin (macrocell bidirectional) |
| پن 48 | I/O — User I/O pin (macrocell bidirectional) |
| پن 49 | I/O — User I/O pin (macrocell bidirectional) |
| پن 50 | I/O — User I/O pin (macrocell bidirectional) |
| پن 51 | I/O — User I/O pin (macrocell bidirectional) |
| پن 52 | I/O — User I/O pin (macrocell bidirectional) |
| پن 53 | GND — Ground |
| پن 54 | I/O — User I/O pin (macrocell bidirectional) |
| پن 55 | I/O — User I/O pin (macrocell bidirectional) |
| پن 56 | I/O — User I/O pin (macrocell bidirectional) |
| پن 57 | I/O — User I/O pin (macrocell bidirectional) |
| پن 58 | I/O — User I/O pin (macrocell bidirectional) |
| پن 59 | I/O — User I/O pin (macrocell bidirectional) |
| پن 60 | I/O — User I/O pin (macrocell bidirectional) |
| پن 61 | I/O — User I/O pin (macrocell bidirectional) |
| پن 62 | I/O — User I/O pin (macrocell bidirectional) |
| پن 63 | I/O — User I/O pin (macrocell bidirectional) |
| پن 64 | I/O — User I/O pin (macrocell bidirectional) |
| پن 65 | I/O — User I/O pin (macrocell bidirectional) |
| پن 66 | I/O — User I/O pin (macrocell bidirectional) |
| پن 67 | VCC — 5V supply voltage |
| پن 68 | VCC — 5V supply voltage |
عام استعمالات
EP1810LC-20T کے لیے موزوں ہے 6 ایپلیکیشنs: 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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
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.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا EP1810LC-20T — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | 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 |
اہم امتیازی خصوصیات
- Tape-and-reel shipping format for automated assembly (بمقابلہEP1810LC-20)
- Balanced speed grade for 5V industrial designs (بمقابلہEP1810LC-25)
- Commercial temperature grade at lower cost (بمقابلہEP1810GM883B)
ڈیزائن نوٹس
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.
تعمیل کی معلومات
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.
