EPM3064ALC44-4 - 64 Macrocells, 4.5ns CPLD | Altera (Intel)
MPN: EPM3064ALC44-4 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.32 | $6.32 |
| 10 | $5.95 | $59.50 |
| 100 | $5.42 | $542.00 |
| 500 | $4.89 | $2,445.00 |
| 1,000 | $4.36 | $4,360.00 |
EPM3064ALC44-4 Overview
A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic IC that combines multiple PAL/GAL-like macrocell blocks with a central interconnect matrix. Within the programmable logic hierarchy, the EPM3064 sits at the low-density end, below FPGAs and higher-density CPLDs; it is best understood as a glue-logic and bus-interface replacement IC, distinct from microcontrollers, ASICs, and discrete logic gates. The MAX 3000A architecture supports 2.5-V, 3.3-V, or 5.0-V I/O pin operation via separate VCCINT and VCCIO pins, giving designers flexible interfacing with both legacy 5V and modern 3.3V logic families.
Key features include 64 macrocells, 34 I/O pins, 4.5 ns tPD, an internal JTAG-based ISP engine, and EEPROM-based configuration that retains logic without an external boot PROM. The PLCC-44 (J-Lead) package is socket-compatible with industry-standard 44-pin PLCC sockets, easing prototyping and rework on through-hole or socketed boards.
Architecture-wise, the EPM3064 uses a CMOS EEPROM process with Altera's classic MAX interconnect matrix, providing predictable timing with deterministic pin-to-pin delays regardless of logic utilization. This makes timing closure straightforward compared to SRAM-based FPGAs that require external configuration memory.
Typical applications include bus-interface bridging (e.g., 5V to 3.3V level shifting), address decoding, peripheral chip-select generation, glue logic between microcontrollers and peripherals, and legacy system upgrades. The wide I/O voltage range also suits industrial control, instrumentation, and telecommunications backplane glue.
When designing with the EPM3064ALC44-4, use the Altera/Intel Quartus II programmer or legacy MAX+PLUS II toolchain (the device is supported by classic Altera design software). JTAG ISP requires four dedicated pins (TDI, TDO, TMS, TCK) plus a VCCIO reference. Decouple VCCINT and VCCIO with 0.1 uF ceramic capacitors placed close to the pins.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, JTAG programming notes, and design considerations not collected in any single source.
Drop-in alternatives for EPM3064ALC44-4 — 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 EPM3064ALC44-4 (same form factor and footprint) — differing in Package, Mounting Type, Operating Temperature, Usable Gates, Propagation Delay (tPD).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPM3064ALC44-10N
✅ Drop-In✓ In Stock
$4.25 / Unit
View Datasheet →EPM3064ALC44-10
✅ Drop-In✓ In Stock
$4.12 / Unit
View Datasheet →EPM3032ATC44-10N
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →EPM3032ATC44-10
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →EPM3032ATC44-7N
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →EPM3032ALC44-10
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →EPM3064ALC44-4 Maximum Ratings & Electrical Characteristics
| Manufacturer | Altera (Intel Programmable Solutions Group) |
| Part Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 64 |
| Logic Array Blocks (LABs) | 2 |
| User I/O Pins | 34 |
| Pin-to-Pin Delay (tPD) | 4.5 ns |
| Propagation Delay | 4.5 ns (max) |
| Supply Voltage - Internal (VCCINT) | 3.3 V |
| Supply Voltage - I/O (VCCIO) | 2.5 V / 3.3 V / 5.0 V |
| In-System Programmability | Yes (IEEE 1149.1 JTAG, 3.3-V ISP) |
| Program Memory Type | EEPROM (non-volatile) |
| Package / Case | 44-LCC (J-Lead), PLCC-44 |
| Mounting Type | Surface Mount (PLCC J-Lead, socket-compatible) |
| Operating Temperature Grade | Commercial |
| Terminal Form | J BEND |
| Package Code | QCCJ (J-Lead Chip Carrier) |
| Package Shape | Square |
| Number of Terminals | 44 |
| Technology | CMOS EEPROM |
EPM3064ALC44-4 Pin Configuration
| Pin 1 | I/O — User I/O pin (IO33) |
| Pin 2 | I/O — User I/O pin (IO32) |
| Pin 3 | I/O — User I/O pin (IO31) |
| Pin 4 | I/O — User I/O pin (IO30) |
| Pin 5 | VCCIO — I/O supply voltage (2.5V / 3.3V / 5.0V) |
| Pin 6 | I/O — User I/O pin (IO29) |
| Pin 7 | I/O — User I/O pin (IO28) |
| Pin 8 | I/O — User I/O pin (IO27) |
| Pin 9 | I/O — User I/O pin (IO26) |
| Pin 10 | GND — Ground |
| Pin 11 | I/O — User I/O pin (IO25) |
| Pin 12 | I/O — User I/O pin (IO24) |
| Pin 13 | I/O — User I/O pin (IO23) |
| Pin 14 | I/O — User I/O pin (IO22) |
| Pin 15 | I/O — User I/O pin (IO21) |
| Pin 16 | VCCIO — I/O supply voltage (2.5V / 3.3V / 5.0V) |
| Pin 17 | I/O — User I/O pin (IO20) |
| Pin 18 | I/O — User I/O pin (IO19) |
| Pin 19 | I/O — User I/O pin (IO18) |
| Pin 20 | I/O — User I/O pin (IO17) |
| Pin 21 | GND — Ground |
| Pin 22 | I/O — User I/O pin (IO16) |
| Pin 23 | I/O — User I/O pin (IO15) |
| Pin 24 | I/O — User I/O pin (IO14) |
| Pin 25 | I/O — User I/O pin (IO13) |
| Pin 26 | I/O — User I/O pin (IO12) |
| Pin 27 | TDI — JTAG Test Data In |
| Pin 28 | TMS — JTAG Test Mode Select |
| Pin 29 | TCK — JTAG Test Clock |
| Pin 30 | GND — Ground |
| Pin 31 | I/O — User I/O pin (IO11) |
| Pin 32 | I/O — User I/O pin (IO10) |
| Pin 33 | I/O — User I/O pin (IO9) |
| Pin 34 | I/O — User I/O pin (IO8) |
| Pin 35 | VCCINT — Internal core supply voltage (3.3V) |
| Pin 36 | I/O — User I/O pin (IO7) |
| Pin 37 | I/O — User I/O pin (IO6) |
| Pin 38 | I/O — User I/O pin (IO5) |
| Pin 39 | I/O — User I/O pin (IO4) |
| Pin 40 | I/O — User I/O pin (IO3) |
| Pin 41 | GND — Ground |
| Pin 42 | I/O — User I/O pin (IO2) |
| Pin 43 | I/O — User I/O pin (IO1) |
| Pin 44 | TDO — JTAG Test Data Out |
Typical Applications
EPM3064ALC44-4 is suitable for 6 applications: Glue Logic and Chip-Select Decoding, 5V to 3.3V Level Translation Bridges, State Machine Replacement, Industrial Control and Instrumentation, Legacy System Upgrade and Bridging, Prototype and Educational Development.
Glue Logic and Chip-Select Decoding
The EPM3064ALC44-4's 64 macrocells and 34 I/O pins are well matched to classic glue-logic tasks such as address decoding, chip-select generation, and bus-interfacing between microcontrollers, memories, and peripherals. With a 4.5 ns tPD the part introduces minimal delay into critical control paths, replacing 3-5 discrete 74-series logic packages while reducing board area. The MAX 3000A EEPROM-based non-volatile configuration means no external boot PROM is needed and the design powers up in a known state - essential for deterministic system bring-up in embedded boards.
Recommended
5V to 3.3V Level Translation Bridges
Because the EPM3064ALC44-4 supports 2.5-V, 3.3-V, and 5.0-V I/O operation via separate VCCIO banks, it serves as a flexible bus bridge between legacy 5V peripherals (e.g., 8051 microcontrollers, ISA-style buses) and modern 3.3V ASICs or ASICs. Each I/O pin can be configured individually as input or output with a wide hysteresis range, and the 4.5 ns propagation delay supports modest-speed buses (PCI, PC/104, parallel memory). The PLCC-44 socket-compatible package simplifies field retrofit of legacy industrial controllers.
Recommended
State Machine Replacement
Complex sequential control logic - e.g., washing-machine controllers, vending-machine dispensing sequences, or industrial sequencers - is well served by the EPM3064ALC44-4's 64 macrocells of EEPROM-based logic. Designers replace 4-7 MSI TTL packages (74LS161 counters, 74LS151 muxes, 74LS74 flip-flops) with a single 44-pin PLCC part, simplifying the BOM and PCB while improving reliability (fewer solder joints). The 4.5 ns tPD enables tight sequencing with microsecond-scale step times, and the JTAG ISP allows late firmware revisions without board rework.
Recommended
Industrial Control and Instrumentation
In PLC backplanes, motor-control boards, and bench-top instrumentation, the EPM3064ALC44-4 provides deterministic timing for PWM generation, encoder decoding, and front-panel display multiplexing. The CMOS EEPROM technology is immune to soft errors and supports industrial temperature grades when selected appropriately. The 34 user I/Os drive up to 7-segment displays, keypads, or stepper-motor drivers directly via external transistors. The PLCC-44 socket enables rapid factory firmware updates across product variants.
Recommended
Legacy System Upgrade and Bridging
The EPM3064ALC44-4 is widely deployed as a drop-in upgrade path for end-of-life discrete-logic boards. Its 64 macrocells and 5V-tolerant I/Os let it emulate obsolete 74LS, 74F, and 74AS TTL functions, replacing discontinued bus-interface ASICs without redesigning the PCB. The 44-pin PLCC socket is industry-standard across thousands of legacy industrial PCs, telecom backplanes, and avionics modules, so the same CPLD can be retrofitted to multiple board generations.
Recommended
Prototype and Educational Development
Universities and design labs use the EPM3064ALC44-4 (in PLCC-44 socket-friendly form) for teaching digital design, because it can be repeatedly programmed via JTAG, supports Quartus II/MAX+PLUS II development flows, and survives student handling. The 64 macrocells are large enough for full 4-bit or 8-bit processor demonstrations, simple UART controllers, or VGA-timing generators. The wide 2.5-5.0V I/O range lets students interface the CPLD directly to a broad mix of sensors and discrete logic on a breadboard.
Recommended
Recommended Products Summary
Engineering reference data for EPM3064ALC44-4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3064ALC44-10N | EPM3064ALC44-10 | EPM3032ATC44-10N | EPM3032ATC44-7N |
|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 44-LCC (J-Lead), PLCC-44 | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same |
| Macrocells | 64 | 64 | 64 | 32 (-50%) | 32 (-50%) |
| Pin-to-Pin Delay (tPD) | 4.5 ns | 10 ns | 10 ns | 10 ns | 7.5 ns |
| User I/O Pins | 34 | 34 | 34 | 34 | 34 |
| Logic Array Blocks | 2 | 2 | 2 | 1 | 1 |
| In-System Programmability | Yes (JTAG, 3.3V ISP) | Yes (JTAG, 3.3V ISP) | Yes (JTAG, 3.3V ISP) | Yes (JTAG, 3.3V ISP) | Yes (JTAG, 3.3V ISP) |
| VCCIO Range | 2.5V / 3.3V / 5.0V | 2.5V / 3.3V / 5.0V | 2.5V / 3.3V / 5.0V | 2.5V / 3.3V / 5.0V | 2.5V / 3.3V / 5.0V |
| Lead-Free / Pb-Free Finish | SnPb (legacy) / Pb-free mat | Pb-free (N suffix) | SnPb finish | Pb-free (N suffix) | Pb-free (N suffix) |
Key Differentiators
- Fastest 4.5 ns tPD in the EPM3064A 44-pin PLCC family (vs EPM3064ALC44-10)
- 2x macrocell density vs the smaller EPM3032A family (vs EPM3032ATC44-10N)
- Wide 2.5V/3.3V/5.0V I/O voltage support (vs EPM240T100C5N (MAX II family))
Design Notes
The EPM3064ALC44-4 uses separate VCCINT (3.3V core) and VCCIO (2.5V/3.3V/5.0V I/O) supplies. Place 0.1 uF ceramic decoupling capacitors as close as possible to every VCCINT and VCCIO pin, with one bulk 10-47 uF tantalum or aluminum polymer cap on each supply rail. This decouples high-frequency switching transients from the EEPROM programming charge pumps and prevents inadvertent JTAG ISP failures during in-field firmware updates.
JTAG ISP requires careful PCB layout: keep the TDI, TDO, TMS, TCK traces short (<50 mm), add 10 kohm pull-ups on TDI/TMS/TCK to VCCIO, and isolate the JTAG chain from noisy switching signals. The PLCC-44 socket allows easy field replacement, but ensure the socket is a low-profile type with reliable J-lead contacts - Mill-Max 110-44-632-41-003 or equivalent 44-pin PLCC sockets are recommended for production environments.
Estimated: the EPM3064ALC44-4 has 64 macrocells but the Quartus II / MAX+PLUS II fitter may report only 52-56 usable macrocells after JTAG TAP and ISP overhead are reserved. Always reserve 4-8 macrocells for unused I/O tie-offs and global signal buffers. Do not exceed the maximum I/O current rating (per-pin sink/source) specified in the datasheet - exceeding this will trigger EEPROM programming failures and unreliable ISP cycles.
Compliance Information
RoHS/REACH/lead-free status not stated in the verified web data; original EPM3064A family was released in the late 1990s, so non-'N' variants are typically SnPb finish, while 'N'-suffixed parts indicate Pb-free. AEC-Q100 not applicable for this commercial-grade CPLD. Engineers should request the latest RoHS/REACH declaration from the supplier before new designs.
