EPM5128JC - 128-Macrocell MAX 5000 CPLD, 35ns, PLCC-68 | Altera
MPN: EPM5128JC ✗ Tapus ng BuhayEPM5128JC Ulas
What is a CPLD? A Complex Programmable Logic Device (CPLD) is a non-volatile, instantly-on programmable logic IC that sits hierarchically below FPGAs and above discrete SSI/MSI glue logic in the digital design stack. CPLDs use EPROM or EEPROM (or flash) configuration memory, so they retain their logic on power-up without external boot devices, and they typically provide predictable timing with pin-to-pin delays in the 5-15 ns range, making them ideal for address decoding, bus arbitration, and state-machine implementation. The MAX 5000 series was Altera's second-generation high-density family, predecessor to the MAX 7000/MAX 3000A series.
Key features of the EPM5128JC include 100% factory-tested logic, 128 macrocells with programmable I/O architecture, a global clock network, and an in-system-erasable EPROM cell that allows unlimited reconfiguration under UV erasure for ceramic-windowed packages. The device operates from a single 5 V supply, supports both combinatorial and registered logic per macrocell, and provides JTAG-compatible boundary-scan testability per IEEE 1149.1.
The architectural foundation is a programmable AND/OR array: each macrocell contains a sum-of-products logic block, a programmable flip-flop, and an output enable / polarity control. The interconnect fabric uses Altera's classic Universal FastTrack (in MAX 5000) routing, which guarantees fixed and predictable timing for every signal path regardless of logic placement, an important consideration when migrating from discrete PAL/GAL devices.
Typical applications include legacy 5 V bus-interface bridging (ISA, VME, STD), state-machine controllers in industrial PLCs, peripheral glue-logic consolidation in printers and disk controllers, address decoding for 8-bit and 16-bit microprocessor systems, and pin-compatible replacements for multiple TTL/MSI packages. The ceramic PLCC-68 (JC) package is well-suited for prototypes and high-reliability applications where plastic packages are unsuitable.
Designers should note that the MAX 5000 family is an obsolete legacy family; current designs should target MAX 3000A, MAX II, or MAX V CPLDs in equivalent logic densities, or use small low-cost FPGAs (Cyclone IV / MAX 10) when supply assurance matters. The ceramic JLCC windowed package is preferred for engineering development because UV erasure allows iterative reprogramming; production plastic-encapsulated variants should be sourced for volume runs.
This page synthesizes distributor availability, drop-in cross-family alternatives, and practical design notes not consolidated in the original Altera datasheet, enabling engineers evaluating legacy MAX 5000 designs to identify drop-in replacements and migration paths.
Mga alternatibo na pwedeng ilagay na EPM5128JC — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok EPM5128JC (parehas na form factor at footprint) — pagkakaiba sa Mounting Type, Package, Device Type, Configuration Memory, Propagation Delay (tPD).
EPM5128JC-1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →EPM5128GM883B
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →EPM5128GM/883B
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →EPM5128GI
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →EPM5128GC-1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →EPM5128GC-2
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →EPM5128JC Mga Pinakamataas na Rating at Electrical Characteristics
| Product Family | MAX 5000 |
| Device Type | EPLD / CPLD |
| Macrocell Count | 128 |
| Propagation Delay (tPD) | 35 ns |
| Logic Elements | Programmable AND/OR/XOR array |
| Supply Voltage (VCC) | 5 V (typical) |
| Bilang ng Pins | 68 |
| Package Type | PLCC-68 (JLCC) ceramic, J-leaded |
| Dedicated Inputs | 8 |
| Configuration Memory | UV-erasable EPROM (windowed package) |
| Programming Interface | Altera MAX+PLUS II / A+PLUS / legacy programmer |
| Temperature na Operasyon | Commercial 0C to +70C |
| Uri ng Pagpapasok | Surface Mount (PLCC socket or solder) |
| Boundary Scan | JTAG IEEE 1149.1 (family feature) |
| Process Technology | CMOS EPROM |
Gabay sa Pin Configuration ng EPM5128JC plcc-68 (jlcc) ceramic, j-leaded
Pin configuration para sa EPM5128JC (plcc-68 (jlcc) ceramic, j-leaded package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa EPM5128JC.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
EPM5128JC ay nararapat para sa 7 aplikasyons: Legacy 5 V ISA / VME Bus Glue Logic, Industrial PLC State-Machine Controllers, Vintage Printer and Disk-Controller Glue, 8/16-bit Microprocessor Address Decoding, Telecom Backplane Interface Logic, Pin-Compatible TTL Replacement, Avionics Legacy Retrofit Programs.
Legacy 5 V ISA / VME Bus Glue Logic
The EPM5128JC's 128 macrocells, 5 V single-supply operation, and 35 ns deterministic propagation delay make it ideal for consolidating address decoding, bus arbitration, and wait-state generation in legacy ISA, VME, and STD bus systems. Its ceramic PLCC-68 windowed package supports iterative UV-erase-reprogram cycles during board bring-up, while its AND/OR array architecture absorbs 6-10 TTL/MSI packages per device, reducing board area and improving noise margin on long backplane traces.
Inirekomenda
Industrial PLC State-Machine Controllers
For industrial PLC scan-engine and ladder-logic-emulation designs, the EPM5128JC provides the macrocell count and registered-logic density required to implement multi-state sequencers, PWM generators, and encoder counters in a single device. Its predictable 35 ns pin-to-pin timing ensures deterministic response under all temperature and loading conditions, critical for safety-relevant control loops. The wide commercial operating range and ceramic-package reliability suit factory-floor environments with extended thermal stress and vibration.
Inirekomenda
Vintage Printer and Disk-Controller Glue
Legacy parallel-port printers, SCSI disk controllers, and Centronics-interface peripherals used the EPM5128JC to consolidate 30-50 discrete 74LS TTL packages into a single programmable device, shrinking PCB real-estate and improving timing margin on parallel data buses. Its bidirectional I/O architecture simplifies data-bus transceiver control, and its non-volatile UV-erasable configuration memory retained logic across power cycles without external boot devices - a key advantage in pre-flash-CPLD designs.
Inirekomenda
8/16-bit Microprocessor Address Decoding
The EPM5128JC was widely used to replace discrete 74LS138 / 74LS139 decoder trees in 8086, 68000, Z80, and 8051-family microprocessor designs, providing full 64 KB or 1 MB address-space decoding with chip-select outputs in a single device. Its 128 macrocells support 8-16 independent chip-select regions plus wait-state and bus-acknowledge logic, and its 35 ns propagation delay fits within one clock cycle of most 8-25 MHz microprocessors of the era, eliminating external wait-state generation.
Inirekomenda
Telecom Backplane Interface Logic
In telecom T1/E1 and early-SDH backplane designs, the EPM5128JC implemented multi-channel framing, alarm-collection, and line-interface control logic where its 128 macrocells mapped cleanly onto 4-8 independent state machines per device. The ceramic PLCC-68 package provided the long-term reliability demanded by central-office equipment, and the 5 V supply matched the bipolar ECL/TTL interface voltages common in telecom backplanes of that era.
Inirekomenda
Pin-Compatible TTL Replacement
Designers used the EPM5128JC to consolidate random-logic TTL boards containing 30-60 discrete 74LS/74F/74ALS gates, latches, and flip-flops into a single reprogrammable device, often achieving 4:1 or better board-area reduction. The deterministic timing and 35 ns delay match discrete-TTL propagation times closely enough that re-routing is unnecessary, and the UV-erasable windowed package enables in-house design changes without re-spinning the PCB - a major cost advantage in long-lifecycle industrial and aerospace programs.
Inirekomenda
Avionics Legacy Retrofit Programs
Avionics retrofit programs on platforms originally certified with MAX 5000-series CPLDs depend on the EPM5128JC as the only form-fit-function replacement for end-of-life support, because re-designing around a modern CPLD would require costly re-certification. The ceramic PLCC-68 package with MIL-PRF-38535 screening variants (EPM5128GM883B) provides the reliability pedigree required for DO-254 DAL-C and DAL-D applications, and the deterministic timing simplifies timing-margin analysis during certification audits.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for EPM5128JC — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | EPM5128JC-1 | EPM5128GM883B | EPM5128GI | EPM5128GC-1 | EPM5128GC-2 |
|---|---|---|---|---|---|---|
| Package | PLCC-68 (ceramic, JLCC, windowed) | PLCC-68 (ceramic, JLCC, windowed) - same | PLCC-68 (ceramic, 883B) - same | PLCC-68 (ceramic, industrial) - same | PLCC-68 (ceramic) - same | PLCC-68 (ceramic) - same |
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Macrocell Count | 128 | 128 | 128 | 128 | 128 | 128 |
| Propagation Delay (tPD) | 35 ns | ~25-30 ns (faster grade) | 35 ns (military) | 35 ns (industrial) | ~30 ns (commercial -1 grade) | 45 ns (slower grade) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Temperature Grade | Commercial 0C to +70C | Commercial 0C to +70C | Military -55C to +125C (MIL-PRF-38535) | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C |
| Configuration Memory | UV-erasable EPROM (windowed) | UV-erasable EPROM (windowed) | UV-erasable EPROM (windowed) | UV-erasable EPROM (windowed) | UV-erasable EPROM (windowed) | UV-erasable EPROM (windowed) |
| Lifecycle Status | Obsolete (as of 2026) | Obsolete | Obsolete (military stock only) | Obsolete | Obsolete | Obsolete |
Pangunahing mga Pagkakaiba
- Faster speed grade at the same price point (kumpara saEPM5128JC-1)
- Military temperature range available in same package (kumpara saEPM5128GM883B)
- Industrial temperature grade for factory-floor use (kumpara saEPM5128GI)
Talaan ng Disenyo
Estimated: The EPM5128JC operates from a single 5 V +/- 10% supply. At maximum macrocell toggle rate (all 128 FFs at 50 MHz with 50% toggle), ICC draw can reach 200-300 mA. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VCC pin and a single 10 uF tantalum bulk capacitor near the package. Add a ferrite bead in series with VCC if the supply shares a rail with switching converters, because EPROM-cell programming-mode voltage transients can cause functional upsets.
PLCC-68 sockets are highly recommended for prototype and field-replaceable applications because the ceramic JLCC package is not designed for repeated hand-soldering. Use a gold-plated machine-pin socket (e.g., AMP 1-822066-6 or 3M 8680-6000) to ensure reliable contact after 100+ insertion cycles. For production, consider wave-soldering with a PLCC-68 footprint with thermal-relief pads and a solder-paste stencil optimized for 0.4 mm pitch leads.
The EPM5128JC uses a UV-erasable EPROM cell that requires 20-30 minutes of exposure to 12 mW/cm^2 UV light (254 nm wavelength) before reprogramming. Cover the window with opaque label during operation, because ambient UV (fluorescent lamps, direct sunlight) can erase configuration over weeks. Also note that unlike flash-based CPLDs, the MAX 5000 family cannot be reprogrammed in-circuit; you must remove the device or use a windowed package on a programmer.
Estimated: At 5 V VCC, 200 mA ICC, and ambient 70C commercial-max, the EPM5128JC ceramic PLCC-68 has a theta_JA of approximately 35-45 C/W, yielding a junction-to-ambient rise of 7-9 C above ambient. The device does not require a heatsink in normal operation, but airflow of 100 LFM is recommended in enclosed industrial enclosures to keep junction temperature below 125C. The military-grade EPM5128GM883B operates at -55C to +125C and has tighter thermal characterization.
Impormasyon ng Pagsunod sa Kautusan
RoHS/REACH/lead-free status not specified in the verified web data; legacy Altera MAX 5000 family (pre-2000s) was typically supplied in non-RoHS ceramic packages. AEC-Q100 is not applicable because this is a programmable logic IC for industrial/avionics rather than automotive-grade silicon.
