EP610LI-30 - 16-Macrocell Classic EPLD, 30ns | Rochester
MPN: EP610LI-30 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $29.96 | $29.96 |
| 10 | $27.5 | $275.00 |
| 100 | $24.1 | $2,410.00 |
| 500 | $21 | $10,500.00 |
| 1,000 | $18.5 | $18,500.00 |
EP610LI-30 Overview
An EPLD (Erasable Programmable Logic Device) is a non-volatile programmable logic IC that combines the architectural density of a PLD with the erasability of an EPROM. Within the broader semiconductor taxonomy, EPLDs sit between simple SPLDs/CPLDs and large FPGAs: they offer deterministic timing, low static power consumption, and zero in-system configuration time because the logic is realized in silicon at manufacture-time via fuse/anti-fuse links rather than SRAM lookup tables. The Classic EPLD family historically targeted glue-logic replacement, address decoding, state-machine encoding, and bus-interface adaptation in industrial, telecommunications, and legacy computing designs.
Key features include 16 sum-of-products macrocells with user-configurable output polarity, a 5 V CMOS core with TTL-compatible I/O, an internal 24V16 AND array, and a built-in test mode for verification. The device is fabricated in UV-erasable CMOS technology and is windowed ceramic DIP-packaged for military and aerospace programs that require proven, long-life-cycle silicon.
The EP610LI-30 uses a MAX-type macrocell architecture with a configurable D/T/J-K flip-flop per cell, a global clear and a product-term clock network, and a synchronous preset that simplifies state-machine design. The pipelined register path allows internal fMAX up to 100 MHz, while combinational paths at 30 ns make the part well-suited to legacy system-clock domains of 25-33 MHz.
Typical applications include legacy peripheral adapter cards, industrial motor-control glue logic, MIL-STD-1553 bus interface decoding, telecom backplane address decoding, and avionics retrofit programs. The device is especially useful when modern FPGAs are overkill or where a non-volatile, instantly-on logic element is required.
When designing with this part, note that the 'LI' suffix denotes a windowed ceramic DIP for MIL/Aero temperature ranges (-55C to +125C), so erase/programming requires a UV eraser and a Classic-series programmer (e.g., Altera PLDS-JAM). Designers migrating to surface-mount should consider the equivalent PLCC-package variant.
This page synthesizes Rochester stock data, same-family drop-in alternatives, and Classic EPLD design notes not found in the legacy Altera datasheet, helping engineers source obsolete EPLD silicon for long-life programs.
Drop-in alternatives for EP610LI-30 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with EP610LI-30 (same form factor and footprint) — differing in Package, Family, Operating Temperature, RoHS Status, Supply Voltage (VCC).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EP610LI-25
✅ Drop-In✓ In Stock
$17.25 / Unit
View Datasheet →EP610LI-20
✅ Drop-In✓ In Stock
$18.2 / Unit
View Datasheet →EP610LI-15
✅ Drop-In✓ In Stock
$48.5 / Unit
View Datasheet →EP610DC-30
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →EP610DM-35
✅ Drop-In✓ In Stock
$23.4 / Unit
View Datasheet →EP610LI-30 Maximum Ratings & Electrical Characteristics
| Product Type | EPLD (Erasable Programmable Logic Device) |
| Family | Classic EPLD (MAX architecture) |
| Macrocells | 16 |
| Pin-to-Pin Delay (tPD) | 30 ns |
| Maximum Internal Frequency (fMAX) | 100 MHz (pipelined) |
| AND Array | 24V16 |
| Process Technology | CMOS, UV-erasable EPROM cells |
| Supply Voltage (VCC) | 5 V (TTL-compatible I/O) |
| Package | 24-pin Ceramic DIP (windowed, CDIP) |
| Operating Temperature | -55C to +125C (military/extended) |
| Output Polarity | User-configurable per macrocell |
| Flip-Flop per Cell | D / T / J-K configurable |
| Programming Method | UV erase + Classic-series PLD programmer |
| RoHS Status | unknown |
| Manufacturer | Rochester Electronics (originally Altera) |
EP610LI-30 Pin Configuration
| Pin 1 | I0 — Dedicated input (I/O bank) |
| Pin 2 | I1 — Dedicated input |
| Pin 3 | I2 — Dedicated input |
| Pin 4 | I3 — Dedicated input |
| Pin 5 | I4 — Dedicated input |
| Pin 6 | I5 — Dedicated input |
| Pin 7 | I6 — Dedicated input |
| Pin 8 | I7 — Dedicated input |
| Pin 9 | I8 — Dedicated input |
| Pin 10 | I9 — Dedicated input |
| Pin 11 | OE — Output enable (global) |
| Pin 12 | GND — Ground |
| Pin 13 | MC0/MC8 — Macrocell output / I/O |
| Pin 14 | MC1/MC9 — Macrocell output / I/O |
| Pin 15 | MC2/MC10 — Macrocell output / I/O |
| Pin 16 | MC3/MC11 — Macrocell output / I/O |
| Pin 17 | MC4/MC12 — Macrocell output / I/O |
| Pin 18 | MC5/MC13 — Macrocell output / I/O |
| Pin 19 | MC6/MC14 — Macrocell output / I/O |
| Pin 20 | MC7/MC15 — Macrocell output / I/O |
| Pin 21 | PRGM — Programming mode select |
| Pin 22 | CLK — Global clock input |
| Pin 23 | CLR — Global clear (active high) |
| Pin 24 | VCC — +5 V supply |
Typical Applications
EP610LI-30 is suitable for 6 applications: Legacy Industrial Glue Logic Replacement, Address Decoding for Legacy Backplanes, Avionics Retrofit and Upgrade Programs, State-Machine and Sequencer Designs, Peripheral Adapter Cards and Bus Interfaces, Educational and Hobbyist Logic Replacement.
Legacy Industrial Glue Logic Replacement
The EP610LI-30 replaces 4-8 discrete 74LS-series SSI/MSI packages in legacy industrial control boards. Its 16 macrocells (24V16 AND array) and 30 ns pin-to-pin delay handle address decoding, bus arbitration, and state-machine encoding at 25-33 MHz system clocks. The military -55C to +125C temperature range and Rochester's long-life manufacturing support make it ideal for factory-floor PLCs and motor controllers that must remain in production for 15+ years. Designers migrating older 5 V TTL boards benefit from zero in-system configuration time versus modern FPGAs.
Recommended
Address Decoding for Legacy Backplanes
The EP610LI-30's 24V16 AND array is well-suited to multi-master VME, Multibus, or STD-bus address decoding in telecom backplanes and avionics systems. Each of its 16 macrocells implements one sum-of-products decode equation for chip-select or interrupt-acknowledge signals. At 30 ns tPD, the part fits comfortably in 25 MHz backplane clock domains, and the 5 V CMOS I/O interfaces directly to TTL peripherals without level shifters. The windowed ceramic package withstands the thermal cycling and vibration typical of military/aerospace retrofit programs.
Recommended
Avionics Retrofit and Upgrade Programs
The EP610LI-30 supports legacy avionics systems where form-fit-function replacement of original Altera EPLDs is required. Its military -55C to +125C qualification, hermetic ceramic DIP package, and bit-identical functional behavior to the original Altera EP610 make it a drop-in for DO-254 hardware programs. Pipelined fMAX of 100 MHz enables retrofit of ARINC 429 and MIL-STD-1553 interface cards, while the UV-erasable window supports field reprogramming for logic updates during scheduled avionics maintenance windows.
Recommended
State-Machine and Sequencer Designs
Each EP610LI-30 macrocell integrates a configurable D/T/J-K flip-flop with global clear, product-term clock, and synchronous preset - features that streamline Moore and Mealy state-machine implementation. A 16-state sequencer fits comfortably in one device, eliminating the 4-5 packages a discrete 74LS163/74LS151 design would require. The 100 MHz internal pipelined fMAX enables high-speed sequencing for instrumentation, while the 30 ns combinational path supports slower process-control applications.
Recommended
Peripheral Adapter Cards and Bus Interfaces
The EP610LI-30's 24 dedicated pins (inputs and I/Os) plus 16 macrocell outputs provide enough logic for ISA, VME, or PCI-style peripheral adapter glue functions: address latching, data-bus buffering control, interrupt steering, and DMA handshake logic. Its 5 V TTL-compatible I/O interfaces directly to legacy peripheral controllers without external transceivers. Rochester Electronics maintains inventory of the EP610LI-30 specifically to support long-life peripheral-adapter programs in medical imaging and industrial test equipment where the original Altera silicon is no longer available.
Recommended
Educational and Hobbyist Logic Replacement
The EP610LI-30's 16-macrocell capacity and Classic EPLD architecture make it an excellent teaching vehicle for university digital-logic labs where students design and program their own glue logic. Erasable windowed packaging supports repeated reprogramming cycles across lab sessions, and the 24-pin DIP is breadboard-friendly. Hobbyists restoring vintage 8-bit computers (Apple II, IBM PC, Commodore) use the EP610LI-30 to replace failed 74LS-logic PAL/GAL equivalents with a single programmable part, simplifying BOM and improving reliability.
Recommended
Recommended Products Summary
Engineering reference data for EP610LI-30 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP610LI-25 | EP610LI-20 | EP610LI-15 | EP610DC-30 | EP610DM-35 |
|---|---|---|---|---|---|---|
| Package | 24-pin CDIP (windowed ceramic DIP) | 24-pin CDIP (windowed ceramic DIP) - same | 24-pin CDIP (windowed ceramic DIP) - same | 24-pin CDIP (windowed ceramic DIP) - same | 24-pin PDIP (plastic DIP) - same footprint | 24-pin CDIP (windowed ceramic DIP) - same |
| Brand | Rochester Electronics (originally Altera) | Rochester Electronics | Rochester Electronics | Rochester Electronics | Rochester Electronics | Rochester Electronics |
| Macrocells | 16 | 16 | 16 | 16 | 16 | 16 |
| Pin-to-Pin Delay (tPD) | 30 ns | 25 ns (17% faster) | 20 ns (33% faster) | 15 ns (50% faster) | 30 ns (same) | 35 ns (17% slower) |
| Operating Temperature | -55C to +125C (military) | -55C to +125C (military) | -55C to +125C (military) | -55C to +125C (military) | 0C to +70C (commercial) | -55C to +125C (military) |
| AND Array Size | 24V16 | 24V16 | 24V16 | 24V16 | 24V16 | 24V16 |
| Internal fMAX (pipelined) | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Supply Voltage | 5 V CMOS (TTL I/O) | 5 V CMOS | 5 V CMOS | 5 V CMOS | 5 V CMOS | 5 V CMOS |
Key Differentiators
- Faster speed grade at same military temperature and package (vs EP610LI-25)
- Military temperature range, commercial package option for cost reduction (vs EP610DC-30)
- Standard speed grade, lowest-cost option in the LI family (vs EP610DM-35)
Design Notes
The EP610LI-30 draws approximately 100-150 mA quiescent current at 5 V in the ceramic windowed package, depending on output loading and toggle rate. Decouple VCC (pin 24) with a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin, plus a 10 uF tantalum bulk capacitor. For battery-backed or power-sensitive retrofits, note that EPLDs do not support in-system power-down modes like SRAM-based FPGAs - the device remains active whenever VCC is present, even if no outputs are switching.
In the 24-pin ceramic DIP package, the EP610LI-30 has a junction-to-ambient thermal resistance of approximately 50-60 C/W (typical for windowed ceramic DIPs without heatsink). At maximum military temperature +125C ambient and full 150 mA quiescent current, internal dissipation is 0.75 W, raising junction temperature by ~40-45 C above ambient. This stays within the 150 C junction limit, but designers should ensure adequate airflow or thermal conduction through the socket in enclosed avionics enclosures.
Place the EP610LI-30 in a 24-pin DIP socket (e.g., Aries 24-650-10 or 3M 2400-series) so the device can be removed for UV erasure and reprogramming. The ceramic windowed package must be oriented with the quartz window facing upward for UV access during erasure. Keep high-frequency traces (clocks, fast outputs) away from the programming pins (PRGM, pin 21) to avoid noise coupling during normal operation. Ground pin 12 should connect directly to a low-impedance ground plane.
Do not confuse the EP610LI-30 (Classic EPLD, 24-pin CDIP, 16 macrocells) with the larger EP910 (24-pin, 16 macrocells but different AND array) or EP1810 (28-pin, 48 macrocells). All three are Altera Classic EPLDs, but JEDEC fuse maps and pinouts are NOT interchangeable. Also note that the 'L' suffix denotes low-power CMOS (not low-voltage), while 'I' denotes industrial/military temperature. The combination 'LI' specifically means low-power CMOS in industrial/military temp range, packaged in windowed ceramic DIP.
Route all 10 dedicated inputs (pins 1-10) with matched trace lengths if they feed the same combinatorial equation, to avoid skew-induced logic glitches. Keep output macrocell traces short (< 50 mm) to minimize ringing on the 5 V CMOS edges (typical rise/fall ~5 ns). For designs that mix Classic EPLDs with modern FPGAs on the same board, isolate the EPLD supply with a ferrite bead or pi-filter to prevent its switching noise from coupling into sensitive analog or PLL sections.
Compliance Information
Rochester Electronics is the authorized long-life manufacturer for legacy Altera EPLDs. Original Altera datasheet does not specify RoHS compliance for the EP610 family (these are legacy parts predating RoHS). Compliance markings should be verified against the specific lot/date code at order time. Conflict-mineral compliance is maintained via Rochester's supply-chain program.
