EP1810GI-45 - UV PLD, 50ns, 24 Macrocells, CPGA-68 | Altera
MPN: EP1810GI-45 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $88.4 | $88.40 |
| 10 | $78.5 | $785.00 |
| 100 | $70.2 | $7,020.00 |
| 500 | $62.85 | $31,425.00 |
| 1,000 | $56.4 | $56,400.00 |
Drop-in alternatives for EP1810GI-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:
EP1810GC-35
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$177.12 / Unit
View Datasheet →EP1810GC-35AB
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$9.95 / Unit
View Datasheet →EP1810LC-35
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$49.2 / Unit
View Datasheet →EP1810GM-35
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
EP1810GM-45
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
EP1810GI-45 Maximum Ratings & Electrical Characteristics
| Device Type | UV Erasable Programmable Logic Device (EPLD) |
| Family | Altera Classic EPLD |
| Macrocells | 24 |
| Flip-Flops | 48 |
| Propagation Delay (tpd) | 45 ns |
| Speed Grade | -45 |
| Technology | CMOS |
| Package Type | Ceramic Pin Grid Array with UV window |
| Pin Count | 68 |
| Mounting Type | Through-Hole |
| Programmable | Yes (UV-erasable, electrically programmable) |
| RoHS Status | Non-compliant (ceramic PGA) |
| Lead-Free | No |
EP1810GI-45 ceramic pin grid array with uv window Pin Configuration Guide
Complete pinout information for EP1810GI-45 (ceramic pin grid array with uv window package) with 68 pins. This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EP1810GI-45.
Refer to the datasheet for full pin configuration.
Estimated pin count: 68 pins (digital package)
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
EP1810GI-45 is suitable for 6 applications: Legacy Industrial Control Logic, Microprocessor Bus Address Decode, Glue Logic Replacement for Discrete 74-Series ICs, State Machine Controllers, I/O Expansion and Bus Multiplexing, Military and Aerospace Legacy Avionics.
Legacy Industrial Control Logic
The EP1810GI-45's 24 macrocells and 45 ns propagation delay make it well suited for legacy industrial control boards where it replaces several discrete 74LS/74HC logic ICs implementing motor-control state machines and sensor-conditioning glue. The CMOS process keeps quiescent current low, and the ceramic CPGA package tolerates the wide temperature and vibration environment of factory floors. Field engineers appreciate the UV-erasable window for last-minute logic revisions without re-spinning the PCB, an important consideration for long-life industrial equipment. The Rochester Electronics franchise supply chain continues to support these legacy control designs through their authorized Altera Classic EPLD silicon stockpile.
Recommended
Microprocessor Bus Address Decode
The EP1810GI-45's 24 macrocells and 48 flip-flops are sufficient for full 24-bit address-decode logic for microprocessors such as the 8086, 68000, or Z80 in legacy embedded systems. The 45 ns tpd aligns with the address-to-chip-select timing window of these microprocessors, ensuring that peripheral enables remain glitch-free even at the rated bus-clock frequencies. CMOS technology reduces the Icc draw of address-decode PLDs versus bipolar PAL counterparts, helping legacy boards meet thermal budgets. The UV window also permits rapid design iteration during board bring-up, where decode maps change frequently during firmware development.
Recommended
Glue Logic Replacement for Discrete 74-Series ICs
A single EP1810GI-45 can functionally replace an entire board section of discrete 74LS244, 74LS245, 74LS138, 74LS151, and 74LS374 chips, freeing PCB area and reducing the bill-of-materials count on legacy logic boards. The 24 macrocells comfortably accommodate 8 to 12 small SSI/MSI functions, while the 45 ns tpd preserves the original timing budgets of 74LS-grade designs. CMOS technology reduces the quiescent current draw by approximately 80% versus the bipolar 74LS families it replaces, an attractive feature for legacy systems on tight thermal budgets. The ceramic PGA package is footprint-compatible with the original 68-pin through-hole discrete logic layouts.
Recommended
State Machine Controllers
With 48 flip-flops and 24 macrocells, the EP1810GI-45 is well suited for implementing Moore and Mealy state machines with up to several dozen states for sequencer, controller, and protocol-handshake applications. The 45 ns tpd provides comfortable timing margin for asynchronous state transitions and edge-detect sequencing in legacy industrial and aerospace sequencers. The UV-erasable window enables engineering teams to iterate on state-machine designs during prototype validation without re-spun programmers. Rochester Electronics' authorized silicon ensures long-term availability for aerospace sequencer designs that may be in service for decades.
Recommended
I/O Expansion and Bus Multiplexing
The EP1810GI-45's macrocell-rich architecture makes it ideal for I/O expansion, bus multiplexing, and signal routing in legacy microcomputer systems where multiple peripheral buses share a common processor bus. Its 45 ns tpd handles bus-turnaround timing comfortably for MHz-class microprocessor systems, while the CMOS process keeps power dissipation low in continuously-active I/O-mux roles. The CPGA-68 ceramic package is footprint-compatible with older discrete-logic I/O-mux boards, enabling drop-in modernization. Rochester Electronics' franchise distribution keeps these parts in stock for long-lifecycle industrial I/O systems.
Recommended
Military and Aerospace Legacy Avionics
The ceramic CPGA-68 package, military temperature screening, and known Altera Classic EPLD silicon make the EP1810GI-45 a long-standing choice for military and aerospace avionics, ground-support equipment, and defense electronics where a UV-erasable PLD with deterministic timing is preferred over reprogrammable flash-based logic. Its 45 ns tpd aligns with the conservative timing margins typical of avionics designs, and Rochester Electronics' military-screened variants (e.g., EP1810GM-45) extend the operating temperature range. The long-life cycle of military platforms - often 20 to 30 years - is supported by Rochester's authorized Classic EPLD franchise stocking program, which guarantees continued silicon availability for legacy defense designs.
Recommended
Recommended Products Summary
Engineering reference data for EP1810GI-45 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP1810GC-35 | EP1810GC-35AB | EP1810LC-35 | EP1810GM-35 | EP1810GM-45 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | CPGA-68 | CPGA-68 (same) | CPGA-68 (same) | CPGA-68 (same) | CPGA-68 (same) | CPGA-68 (same) |
| Propagation Delay (tpd) | 45 ns | 35 ns (-22%) | 35 ns (-22%) | 35 ns (-22%) | 35 ns (-22%) | 45 ns (same) |
| Macrocells | 24 | 24 (same) | 24 (same) | 24 (same) | 24 (same) | 24 (same) |
| Flip-Flops | 48 | 48 (same) | 48 (same) | 48 (same) | 48 (same) | 48 (same) |
| Technology | CMOS | CMOS | CMOS | CMOS (low-power) | CMOS (military grade) | CMOS (military grade) |
| Operating Temperature | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | Military grade (-55C to +125C) | Military grade (-55C to +125C) | |
| UV-Erasable | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | Obsolete (Rochester franchise stock) | Obsolete (Rochester franchise stock) | Obsolete (Rochester franchise stock) | Obsolete (military franchise stock) | Obsolete (military franchise stock) |
Key Differentiators
- Same-die, faster -35 grade drop-in upgrade available (vs EP1810GC-35)
- Military temperature grade variant available in same package (vs EP1810GM-45)
- Low-power CMOS variant available for power-sensitive designs (vs EP1810LC-35)
Design Notes
Estimated: The EP1810GI-45 must be erased with a UV dose of approximately 30 W·s/cm^2 (watt-seconds per square centimeter) of 254 nm UV light before reprogramming. Insufficient erasure time leaves residual programming charges that cause functional errors and unreliable operation. Use a dedicated UV eraser, not sunlight or fluorescent room light, and confirm erasure by a blank-check read on the programmer before reprogramming.
Estimated: The CPGA-68 ceramic package has a typical theta_JA of approximately 30 C/W in still air. At CMOS EPLD quiescent and dynamic currents, total package dissipation at 5 MHz internal logic toggling remains well below 1 W, so the junction-to-ambient rise is roughly 30 C above ambient - acceptable for commercial temperature operation. For military temperature screening (-55C to +125C), use the EP1810GM-45 or EP1810GM-35 variants that share the same CPGA-68 pinout.
The CPGA-68 package is through-hole and not RoHS compliant; the lead finish is typically SnPb. For lead-free reflow compatibility, choose modern surface-mount CPLDs in the Altera MAX II / MAX V family (for example EPM240T100C5N or 5M80ZT100C5N from the Site MPN list) in TQFP-100 packages. When replacing EP1810GI-45 on a legacy through-hole board, use a PGA-to-PGA adapter or migrate to a daughter-board design.
The EP1810GI-45 requires a dedicated Altera Classic EPLD programmer (e.g., Data I/O or BP Microsystems programmers with EPLD Classic support modules) and a CPGA-68 programming socket. Modern Altera/Intel USB-Blaster programmers do not support the Classic EPLD family - verify programmer compatibility before committing to the EP1810GI-45 in prototype development. JEDEC fuse-map files (.jed) written for EP1810GI-45 are forward-compatible with EP1810GC-35 and EP1810GM-45 in the same package.
Compliance Information
Ceramic CPGA-68 package is through-hole SnPb, RoHS non-compliant by exemption may apply for military/aerospace. Reach compliant per Rochester Electronics part listing. Not AEC-Q100 qualified; military temperature variants (EP1810GM-45) follow MIL-STD-883 screening rather than automotive AEC-Q100.
