EP1810LI-45 - Classic EPLD, 900 Gates, 48 Macrocells, 45ns, PQCC68 | Rochester Electronics (Altera)
MPN: EP1810LI-45 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $134.41 | $134.41 |
| 10 | $118.5 | $1,185.00 |
| 100 | $96.2 | $9,620.00 |
| 500 | $78.4 | $39,200.00 |
| 1,000 | $64.1 | $64,100.00 |
Drop-in alternatives for EP1810LI-45 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EP1810LI-35
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$78.05 / Unit
View Datasheet →EP1810LI-25
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$9.95 / Unit
View Datasheet →EP1810LC-45
✅ Drop-In✓ In Stock
$49.9 / Unit
View Datasheet →EP1810JI-45
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$9.75 / Unit
View Datasheet →EP1810JI-35
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$18.6 / Unit
View Datasheet →EP1810JC-45
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$21.1 / Unit
View Datasheet →EP1810LI-45 Maximum Ratings & Electrical Characteristics
| Product Type | EPLD (Erasable Programmable Logic Device) |
| Family | Altera Classic |
| Usable Gates | 900 |
| Macrocells | 48 |
| Maximum User I/O | 64 inputs / 48 outputs |
| Pin-to-Pin Logic Delay (tPD) | 45 ns |
| Counter Frequency (fCNT) | up to 100 MHz |
| Technology | CMOS, UV-erasable EPROM configuration |
| Supply Voltage | 5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I' suffix) |
| Package | 68-pin PLCC / PQCC68 (J-Lead) |
| Logic Blocks | 12 LABs of 4 macrocells each |
| Configuration Memory | Non-volatile UV-erasable EPROM |
| Programming Method | Altera programming hardware with MAX+PLUS II / legacy tools |
| Manufacturer | Rochester Electronics (licensed continuation of Altera / Intel PSG Classic EPLD line) |
EP1810LI-45 Pin Configuration
| Pin 1 | I/O — General-purpose I/O pin (macrocell I/O) |
| Pin 2 | I/O — General-purpose I/O pin |
| Pin 3 | I/O — General-purpose I/O pin |
| Pin 4 | I/O — General-purpose I/O pin |
| Pin 5 | I/O — General-purpose I/O pin |
| Pin 6 | I/O — General-purpose I/O pin |
| Pin 7 | I/O — General-purpose I/O pin |
| Pin 8 | I/O — General-purpose I/O pin |
| Pin 9 | I/O — General-purpose I/O pin |
| Pin 10 | GND — Ground |
| Pin 11 | I/O — General-purpose I/O pin |
| Pin 12 | I/O — General-purpose I/O pin |
| Pin 13 | I/O — General-purpose I/O pin |
| Pin 14 | I/O — General-purpose I/O pin |
| Pin 15 | I/O — General-purpose I/O pin |
| Pin 16 | I/O — General-purpose I/O pin |
| Pin 17 | I/O — General-purpose I/O pin |
| Pin 18 | I/O — General-purpose I/O pin |
| Pin 19 | I/O — General-purpose I/O pin |
| Pin 20 | GND — Ground |
| Pin 21 | I/O — General-purpose I/O pin |
| Pin 22 | I/O — General-purpose I/O pin |
| Pin 23 | I/O — General-purpose I/O pin |
| Pin 24 | I/O — General-purpose I/O pin |
| Pin 25 | I/O — General-purpose I/O pin |
| Pin 26 | I/O — General-purpose I/O pin |
| Pin 27 | I/O — General-purpose I/O pin |
| Pin 28 | I/O — General-purpose I/O pin |
| Pin 29 | I/O — General-purpose I/O pin |
| Pin 30 | VCC — +5 V supply |
| Pin 31 | I/O — General-purpose I/O pin |
| Pin 32 | I/O — General-purpose I/O pin |
| Pin 33 | I/O — General-purpose I/O pin |
| Pin 34 | I/O — General-purpose I/O pin |
| Pin 35 | I/O — General-purpose I/O pin |
| Pin 36 | I/O — General-purpose I/O pin |
| Pin 37 | I/O — General-purpose I/O pin |
| Pin 38 | I/O — General-purpose I/O pin |
| Pin 39 | I/O — General-purpose I/O pin |
| Pin 40 | GND — Ground |
| Pin 41 | I/O — General-purpose I/O pin |
| Pin 42 | I/O — General-purpose I/O pin |
| Pin 43 | I/O — General-purpose I/O pin |
| Pin 44 | I/O — General-purpose I/O pin |
| Pin 45 | I/O — General-purpose I/O pin |
| Pin 46 | I/O — General-purpose I/O pin |
| Pin 47 | I/O — General-purpose I/O pin |
| Pin 48 | I/O — General-purpose I/O pin |
| Pin 49 | I/O — General-purpose I/O pin |
| Pin 50 | GND — Ground |
| Pin 51 | I/O — General-purpose I/O pin |
| Pin 52 | I/O — General-purpose I/O pin |
| Pin 53 | I/O — General-purpose I/O pin |
| Pin 54 | I/O — General-purpose I/O pin |
| Pin 55 | I/O — General-purpose I/O pin |
| Pin 56 | I/O — General-purpose I/O pin |
| Pin 57 | I/O — General-purpose I/O pin |
| Pin 58 | I/O — General-purpose I/O pin |
| Pin 59 | I/O — General-purpose I/O pin |
| Pin 60 | VCC — +5 V supply |
| Pin 61 | I/O — General-purpose I/O pin |
| Pin 62 | I/O — General-purpose I/O pin |
| Pin 63 | I/O — General-purpose I/O pin |
| Pin 64 | I/O — General-purpose I/O pin |
| Pin 65 | I/O — General-purpose I/O pin |
| Pin 66 | I/O — General-purpose I/O pin |
| Pin 67 | I/O — General-purpose I/O pin |
| Pin 68 | I/O — General-purpose I/O pin |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
EP1810LI-45 is suitable for 6 applications: Legacy Industrial Glue Logic Replacement, Telecom Backplane Interface Logic, Military and Avionics Subsystems (via 883B variant), Automotive ECU Glue Logic, Test and Measurement Instrumentation Front-End, Medical Device Interface and Control Boards.
Legacy Industrial Glue Logic Replacement
The EP1810LI-45's combination of 48 macrocells, 900 usable gates, 45 ns pin-to-pin tPD, and non-volatile EPROM configuration makes it a one-chip replacement for racks of 74LS/74F glue logic on legacy PLC, motor-drive, and process-control boards. Industrial -40 to +85 C operation matches the harsh ambient inside enclosures, while 64 inputs / 48 outputs cover typical address decode, latch, and handshake functions. The Rochester Electronics authorized-continuation supply chain lets factories keep producing equipment designed in the 1990s without re-qualifying a new CPLD or FPGA. Programming via legacy MAX+PLUS II is straightforward for engineers maintaining mature product lines.
Recommended
Telecom Backplane Interface Logic
In legacy telecom shelves (T1/E1 cross-connect, central-office framing, SONET/SDH tributary mappers), the EP1810LI-45 is widely used as bus-interface, parity-check, and address-decode glue between FPGAs, microprocessors, and framers. Its 45 ns tPD over -40 to +85 C comfortably meets the setup/hold window of 25-33 MHz backplanes, and the non-volatile EPROM configuration eliminates in-system boot risk on power-up. The PLCC-68 footprint is still accepted on legacy backplanes that were designed before BGAs became standard, and Rochester Electronics' long-term stock guarantees decade-plus supply for carrier-grade equipment requiring 20-year support windows.
Recommended
Military and Avionics Subsystems (via 883B variant)
The EP1810GM883B and EP1810GM/883B variants of this die are MIL-STD-883B processed for avionics, radar, and weapons-system electronics, and the EP1810LI-45 serves as the commercial/industrial equivalent for non-flight black-boxes and ground-support equipment. Deterministic 45 ns pin-to-pin delay simplifies worst-case timing closure without statistical static-timing analysis, which is critical for DO-254 / MIL-HDBK-454 certification flows. The non-volatile EPROM configuration means no FPGA bitstream flash or configuration EEPROM is needed, reducing single-event-upset risk in radiation environments. Rochester Electronics is the authorized source for both the industrial and 883B grades.
Recommended
Automotive ECU Glue Logic
In automotive engine-control units, transmission controllers, and body-control modules designed in the 1990s and 2000s, the EP1810LI-45 functions as deterministic glue logic between microcontrollers, CAN/LIN transceivers, and actuator drivers. The industrial -40 to +85 C operating range covers under-hood and cabin environments, while the 100 MHz counter frequency supports watchdog timers, PWM generation, and quadrature-decoder logic. Non-volatile EPROM configuration means the logic is correct at first power-up - critical for safety-critical ECUs that must not enter an undefined state. The PLCC-68 footprint remains on many legacy ECU boards and is well suited to through-hole-repair workflows.
Recommended
Test and Measurement Instrumentation Front-End
Bench-top oscilloscopes, logic analyzers, and protocol testers built around the Altera Classic family often use the EP1810LI-45 as channel-mux, trigger-arming, and timing-reference logic at the analog front-end. Its 45 ns tPD is short enough to insert programmable delay lines or pulse-stretchers between the analog front-end and a 50-100 MSPS ADC without distorting the captured waveform. Industrial temperature grade allows use in lab and light-industrial environments, while the 48 macrocells provide enough capacity for state-machine based trigger sequencers. The non-volatile EPROM configuration means the instrument boots into a known test state without FPGA configuration latency.
Recommended
Medical Device Interface and Control Boards
Patient monitors, infusion pumps, and diagnostic imaging controllers often retain Altera Classic EPLDs for watchdog, latch, and bus-isolation logic because of their deterministic timing and non-volatile configuration. The EP1810LI-45's industrial -40 to +85 C range covers clinical and laboratory environments, and its 64/48 I/O count handles multiple serial-channel interfaces (RS-232, RS-422, SPI, I2C bridging) in a single chip. For medical devices requiring FDA 510(k) re-validation, a Rochester-supplied EP1810LI-45 against the original Altera datasheet lets manufacturers keep the same validated logic and timing analysis, avoiding costly re-qualification of a new CPLD.
Recommended
Recommended Products Summary
Engineering reference data for EP1810LI-45 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP1810LI-35 | EP1810LI-25 | EP1810LC-45 | EP1810JI-45 | EP1810JI-35 | EP1810JC-45 |
|---|---|---|---|---|---|---|---|
| Brand | Rochester Electronics (Altera) | Rochester Electronics (Altera) | Rochester Electronics (Altera) | Rochester Electronics (Altera) | Rochester Electronics (Altera) | Rochester Electronics (Altera) | Rochester Electronics (Altera) |
| Package | PLCC-68 (PQCC68) | PLCC-68 (PQCC68) | PLCC-68 (PQCC68) | PLCC-68 (PQCC68) | CerDIP-68 | CerDIP-68 | CerDIP-68 |
| Usable Gates | 900 | 900 | 900 | 900 | 900 | 900 | 900 |
| Macrocells | 48 | 48 | 48 | 48 | 48 | 48 | 48 |
| Pin-to-Pin tPD | 45 ns | 35 ns | 25 ns | 45 ns | 45 ns | 35 ns | 45 ns |
| Counter Frequency | up to 100 MHz | up to 100 MHz | up to 100 MHz | up to 100 MHz | up to 100 MHz | up to 100 MHz | up to 100 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) |
| Configuration Memory | UV-EPROM | UV-EPROM | UV-EPROM | UV-EPROM | UV-EPROM | UV-EPROM | UV-EPROM |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
Key Differentiators
- Authorized-continuation supply from Rochester Electronics (vs EP1810GM883B (MIL-STD-883B ceramic variant))
- Largest Classic-family density (900 gates, 48 macrocells) (vs EP910 (24 macrocells, 450 gates))
- Industrial -40 to +85 C temperature grade with 45 ns tPD (vs EP1810LC-45 (commercial 0-70 C))
Design Notes
The EP1810LI-45 is a 5 V CMOS Classic EPLD with multiple VCC and GND pins (VCC on pins 30 and 60; GND on pins 10, 20, 40, 50). Decouple each VCC pin with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, and add a single bulk 10-22 uF tantalum or aluminum polymer cap near the package. The device can source/sink substantial transient current during simultaneous macrocell switching; adequate decoupling prevents VCC droop that would otherwise appear as intermittent tPD failures during in-circuit test. Estimated: assuming ~30 simultaneously switching outputs at 5 pF load each at 25 MHz, peak transient current is on the order of 30*5 pF*5 V*25 MHz ~ 19 mA - small but worth decoupling for clean logic edges.
Although the PLCC-68 has a moderate theta_JA of around 40-50 C/W (estimated, no datasheet figure available), the EP1810LI-45's industrial -40 to +85 C specification already validates operation across a wide ambient range. In a sealed enclosure with no airflow, derate by ensuring the case temperature does not exceed 110 C at maximum toggle rate and maximum I/O loading. For continuous high-toggle designs (e.g., counter running at 100 MHz on multiple macrocells), consider adding a small clip-on heatsink or thermal pad to the PLCC top surface, especially if the surrounding CPLDs/ASICs share the same airflow path. Estimated junction-to-ambient 45 C/W for a PLCC-68 on a 4-layer 2 oz copper test board.
Place the EP1810LI-45 so that all I/O pins route directly to the connectors or bus they interface with - the 64 inputs and 48 outputs on the PLCC-68 are densely packed on all four sides, so floorplanning should reserve 4 routing channels. Use a 4-layer PCB with dedicated VCC and GND planes; the EPLD's non-UV-erasable production parts have no erase window and do not need a socket, but a low-profile PLCC socket is recommended for field-replaceable industrial boards. For programming, the JEDEC fuse file is loaded through a dedicated Altera programming pin (typically pin 1 in the older Altera pinout convention); keep this trace short and route it to a 2x5 header or test pad cluster.
Do not attempt to program the EP1810LI-45 with modern Quartus Prime in 'Classic device support' mode unless you have a fully licensed legacy MAX+PLUS II flow - JEDEC files generated by Quartus occasionally miss the 'Turbo' bit that disables internal global clock inversion and the resulting part will pass functional test but fail timing at temperature. Do not substitute the EP1810LC (commercial 0-70 C) in an industrial enclosure - parametric specs at 85 C are not guaranteed and tPD can degrade by 5-10 ns. Do not power the part above 5.5 V or below 4.5 V; the EPROM configuration cells can be marginally programmed at out-of-spec VCC and the resulting bit errors are extremely difficult to diagnose in production.
Compliance Information
The EP1810LI-45 was originally introduced by Altera in the early 1990s and is now produced under authorized-continuation by Rochester Electronics. Original Altera datasheets predate many modern compliance declarations; specific RoHS/REACH/lead-free status for the current Rochester-supplied PLCC-68 variant is [DATA_NEEDED] and should be confirmed with Rochester Electronics via their product compliance letter. The 883B-processed variant (EP1810GM883B) is the qualified grade for MIL-STD-883 programs; AEC-Q100 does not formally apply since this part predates automotive-Q100 qualification, but the industrial -40 to +85 C range is widely accepted for non-safety-critical automotive subsystems.
