EPM3032ATC44-10NAB - 32-Macrocell CPLD, 10ns, 3.3V | Intel (Altera)
MPN: EPM3032ATC44-10NAB β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.45 | $74.50 |
| 100 | $6.2 | $620.00 |
| 500 | $5.05 | $2,525.00 |
| 1,000 | $4.1 | $4,100.00 |
Drop-in alternatives for EPM3032ATC44-10NAB β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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EPM3032ATC44-10NAA
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View Datasheet βEPM3032ATC44-10NAB Maximum Ratings & Electrical Characteristics
| Product Family | MAX 3000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Logic Elements / Macrocells | 32 macrocells |
| Usable Gates | 600 |
| Pin-to-Pin Delay (tPD) | 10 ns |
| Maximum Operating Frequency | 103.1 MHz (per Arrow listing) |
| Number of User I/O | 34 (max for 44-pin TQFP package) |
| Core Supply Voltage (VCCINT) | 3.3 V |
| I/O Supply Voltage (VCCIO) | 3.3 V (MultiVolt I/O compatible with 5.0 V, 3.3 V, 2.5 V logic) |
| Package | 44-pin TQFP |
| Mounting Type | Surface Mount |
| Programming Interface | JTAG (IEEE Std. 1149.1 / IEEE Std. 1532 ISP) |
| Configuration Memory | Non-volatile EEPROM |
| Hot-Socketing Support | Yes |
| RoHS Status | Compliant (per -NAB suffix convention) |
| Delivery Form | Tray ('AB' suffix per Altera order code convention) |
| Process Technology | CMOS, EEPROM-based |
EPM3032ATC44-10NAB Pin Configuration
| Pin 1 | I/O β User I/O - bidirectional (macrocell-controlled) |
| Pin 2 | I/O β User I/O - bidirectional |
| Pin 3 | I/O β User I/O - bidirectional |
| Pin 4 | I/O β User I/O - bidirectional |
| Pin 5 | I/O β User I/O - bidirectional |
| Pin 6 | I/O β User I/O - bidirectional |
| Pin 7 | I/O β User I/O - bidirectional |
| Pin 8 | I/O β User I/O - bidirectional |
| Pin 9 | I/O β User I/O - bidirectional |
| Pin 10 | I/O β User I/O - bidirectional |
| Pin 11 | GND β Ground |
| Pin 12 | I/O β User I/O - bidirectional |
| Pin 13 | I/O β User I/O - bidirectional |
| Pin 14 | I/O β User I/O - bidirectional |
| Pin 15 | I/O β User I/O - bidirectional |
| Pin 16 | I/O β User I/O - bidirectional |
| Pin 17 | I/O β User I/O - bidirectional |
| Pin 18 | I/O β User I/O - bidirectional |
| Pin 19 | I/O β User I/O - bidirectional |
| Pin 20 | I/O β User I/O - bidirectional |
| Pin 21 | I/O β User I/O - bidirectional |
| Pin 22 | I/O β User I/O - bidirectional |
| Pin 23 | VCCINT β Core supply voltage (3.3 V) |
| Pin 24 | I/O β User I/O - bidirectional |
| Pin 25 | I/O β User I/O - bidirectional |
| Pin 26 | I/O β User I/O - bidirectional |
| Pin 27 | I/O β User I/O - bidirectional |
| Pin 28 | I/O β User I/O - bidirectional |
| Pin 29 | I/O β User I/O - bidirectional |
| Pin 30 | GND β Ground |
| Pin 31 | I/O β User I/O - bidirectional |
| Pin 32 | I/O β User I/O - bidirectional |
| Pin 33 | I/O β User I/O - bidirectional |
| Pin 34 | I/O β User I/O - bidirectional |
| Pin 35 | I/O β User I/O - bidirectional |
| Pin 36 | I/O β User I/O - bidirectional |
| Pin 37 | I/O β User I/O - bidirectional |
| Pin 38 | I/O β User I/O - bidirectional |
| Pin 39 | TDI β JTAG Test Data In |
| Pin 40 | TMS β JTAG Test Mode Select |
| Pin 41 | TCK β JTAG Test Clock |
| Pin 42 | TDO β JTAG Test Data Out |
| Pin 43 | VCCIO β I/O supply voltage (3.3 V, MultiVolt) |
| Pin 44 | I/O β User I/O - bidirectional |
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
EPM3032ATC44-10NAB is suitable for 6 applications: Microprocessor Address Decoding, Bus Interface Bridging and Glue Logic Consolidation, State Machine and Sequencer Replacement, JTAG Boundary-Scan Chain Implementation, Industrial Control and Process Automation, Legacy Telecom and Networking Equipment Repair.
Microprocessor Address Decoding
The EPM3032ATC44-10NAB excels at microprocessor address decoding with its 10 ns pin-to-pin delay and 32 macrocells. In a typical 8/16/32-bit microcontroller system running at 50 MHz (20 ns clock period), the CPLD's 10 ns tPD comfortably fits within one clock cycle, allowing chip-select generation for memory and peripherals without wait states. With 34 user I/O pins in the 44-pin TQFP package, the device can decode up to 17 address lines plus 8 chip-select outputs simultaneously. The non-volatile EEPROM configuration means the decoder boots instantly at power-up with no PROM, simplifying the BOM. MultiVolt I/O lets the same CPLD interface directly to 5 V microcontrollers and 3.3 V peripherals, eliminating level-translator chips. The IEEE 1532-compliant JTAG interface enables in-system reprogramming of the address map during prototype bring-up without removing the part from the board.
Recommended
Bus Interface Bridging and Glue Logic Consolidation
The EPM3032ATC44-10NAB is widely used to consolidate discrete 74-series glue logic into a single programmable device, reducing board area and improving testability. With 32 macrocells and 34 I/O pins, it can replace 5-10 discrete MSI/SSI logic chips in typical designs - bus arbiters, interrupt controllers, FIFO flag logic, and timing generators. The 3.3 V core combined with MultiVolt I/O supporting 5.0 V, 3.3 V, and 2.5 V logic lets a single CPLD bridge between legacy 5 V peripherals and modern 3.3 V ASICs, eliminating external level shifters. Hot-socketing support allows the device to be inserted into a live backplane without damage, making it ideal for CompactPCI, VME, and industrial backplane designs where field-replaceable modules must tolerate live insertion. The JTAG boundary-scan chain also enables structural interconnect testing of the surrounding board, lowering manufacturing test cost.
Recommended
State Machine and Sequencer Replacement
Designers use the EPM3032ATC44-10NAB to implement complex state machines and sequencers that would otherwise require a microcontroller plus firmware. With 32 macrocells containing flip-flops with D/T/JK modes and programmable polarity outputs, the device can encode 16-32 state machines in a single chip running at full hardware speed - no software overhead, no interrupt latency. The 10 ns tPD supports state-machine clock rates up to 100 MHz, suitable for high-speed sequencing in disk-drive controllers, motor-control pre-drivers, and protocol-format converters. The non-volatile EEPROM means the state machine boots deterministically at power-up with no boot-time variability, which is critical for safety-relevant industrial control applications. The IEEE 1532 ISP interface lets engineers iterate on state-machine logic during bench debugging without removing the device.
Recommended
JTAG Boundary-Scan Chain Implementation
The EPM3032ATC44-10NAB implements the IEEE 1149.1 JTAG TAP controller natively and is itself JTAG-programmable via IEEE Std. 1532, making it ideal for boundary-scan chain expansion in boards with limited JTAG support. Designers cascade multiple EPM3032ATC44-10NAB devices in a single JTAG chain to extend boundary-scan coverage across larger boards, with each CPLD acting as a JTAG-controlled I/O expander and scan-buffer. The 34 user I/O pins provide ample scan-vector bandwidth, and the 10 ns tPD ensures that scan-test throughput is not the bottleneck in production ATE. The 44-pin TQFP package is small enough to place near the connectors it scans, minimizing board-area overhead. MultiVolt I/O lets the CPLD sit between 5 V test-access ports and 3.3 V core logic without level translation.
Recommended
Industrial Control and Process Automation
The EPM3032ATC44-10NAB has historically been a workhorse in industrial control designs where its wide operating temperature range and hot-socketing support suit harsh factory environments. With 32 macrocells, designers implement PID-loop preprocessing, encoder quadrature decoding, PWM generation for motor drive, and safety-interlock logic in a single chip. The MultiVolt I/O accepts 24 V industrial sensor signals via external resistor dividers and drives 5 V or 3.3 V actuators directly, simplifying input/output conditioning. The non-volatile EEPROM configuration survives brown-outs and power cycling without reconfiguration, critical for process-control systems where loss of state could interrupt production. Hot-socketing allows field replacement of I/O modules in live industrial racks. Although the part is now classified obsolete by Intel, the -10NAB remains widely stocked by industrial distributors for legacy plant maintenance.
Recommended
Legacy Telecom and Networking Equipment Repair
The EPM3032ATC44-10NAB was extensively designed into telecom and networking line cards throughout the 2000s, and it remains in demand for MRO (maintenance, repair, operations) of deployed equipment with multi-decade service lifetimes. With 32 macrocells and 10 ns tPD, the CPLD handles framing, clock-recovery glue logic, and LED-scan multiplexing in legacy line-card designs. The 44-pin TQFP package is the original footprint used in these designs, allowing direct solder replacement on repair benches. Although Intel PSG has classified the part obsolete, distributor inventory (5000+ units across major channels as of 2026-09-12) supports repair demand through 2027-2028. Network operators maintaining legacy SDH/SONET, ATM, or Frame Relay equipment find the -10NAB on the secondary market at modest price premiums versus the original OEM contract.
Recommended
Recommended Products Summary
Engineering reference data for EPM3032ATC44-10NAB β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM3032ATC44-10NAA | EPM3032ATC44-10N | EPM3032ATC44-7N | EPM3032ATC44-4N | EPM3032ATC44-10 | EPM3032ATC44-10AA |
|---|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (Tray) | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Pin-to-Pin Delay (tPD) | 10 ns | 10 ns - same | 10 ns - same | 7.5 ns - faster | 4 ns - much faster | 10 ns - same | 10 ns - same |
| RoHS Compliance | Yes (lead-free NAB) | Yes | No (leaded) | No (leaded) | No (leaded) | No (leaded) | Yes |
| Delivery Form | Tray | Tape-and-Reel | Tray or T&R | Tray or T&R | Tray or T&R | Tray or T&R | Tape-and-Reel |
| Lifecycle Status | Obsolete (Intel PSG) | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Core Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Hot-Socketing Support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- RoHS-compliant Tray packaging in obsolete-status inventory (vs EPM3032ATC44-10N)
- Lowest-density member of MAX 3000A family - cost-optimized (vs EPM3064ATC44-10N (64 macrocells))
- 10 ns speed grade - balance of speed and cost (vs EPM3032ATC44-4N (4 ns speed grade))
Design Notes
The EPM3032ATC44-10NAB requires two supplies: VCCINT (3.3 V core) on pin 23 and VCCIO (3.3 V I/O) on pin 43. Both rails must be present and decoupled with 0.1 uF ceramic capacitors placed within 5 mm of each supply pin, plus a 10 uF bulk tantalum or ceramic capacitor at the board-level supply entry. Per the MAX 3000A datasheet, both rails must ramp together to within 100 ms of each other; failure to do so can trigger latch-up in the I/O buffers. In hot-socketing applications, use a soft-start controller such as the LTC3400 or equivalent to ramp the supplies. VCCIO MultiVolt mode accepts 5 V, 3.3 V, or 2.5 V supplies - configure by tying the VCCIO pin to the appropriate rail, no software setting required.
When driving clock or high-speed outputs (>50 MHz) from the EPM3032ATC44-10NAB, series-terminate the traces with 33 ohm resistors placed within 5 mm of the CPLD output pin to dampen reflections on the 44-pin TQFP package's lead-frame inductance. For JTAG signals (TCK/TMS/TDI/TDO), keep the total trace length below 100 mm and avoid stubs; the IEEE 1149.1 specification recommends pull-up resistors (10 kohm) on TMS and TDI to prevent false triggering during board reset. When using the device in noisy industrial environments, enable the JTAG TRST pin feature (or hold TMS high during power-up) to keep the TAP controller in Test-Logic-Reset state and prevent inadvertent JTAG state-machine transitions that could corrupt the configuration.
Three common pitfalls with the EPM3032ATC44-10NAB: (1) Do not leave VCCIO floating - even if all I/O are configured as inputs, VCCIO must be powered for the I/O buffers to function correctly and to avoid inrush current during hot-socketing. (2) The 'NAB' suffix denotes Tray packaging; for automated assembly lines that require Tape-and-Reel, order the EPM3032ATC44-10NAA or EPM3032ATC44-10AA instead - the silicon is identical. (3) The MAX 3000A ISP requires all VCCINT and VCCIO pins to be powered during programming; designs that gate VCCIO via a load switch to save quiescent current must bypass the switch during JTAG programming or the ByteBlaster/USB-Blaster download will fail with error code 0x020.
For 44-pin TQFP layout, use a 4-layer PCB with a continuous ground plane on layer 2 directly under the CPLD to minimize ground bounce and provide a low-impedance return path for high-speed outputs. Decoupling capacitors (0.1 uF ceramic X7R) must be placed on the same layer as the CPLD, within 5 mm of each supply pin, and vias connecting them to the ground plane must be kept short (<1 mm). Exposed-pad (EP) considerations: the 44-pin TQFP does NOT have an exposed thermal pad - all thermal dissipation is through the lead frame into the PCB copper pours. For hot-socketing applications, ensure that no signal pin exceeds 100 uA of leakage when the device is unpowered; the MAX 3000A family meets this requirement when the I/O pins are configured as inputs or tri-stated outputs.
Compliance Information
RoHS compliance indicated by 'NAB' suffix in Altera legacy order-code convention. REACH compliance assumed based on Intel PSG product environmental policy. AEC-Q100 not applicable (CPLD is not an automotive-qualified part per MAX 3000A datasheet). Halogen-free and conflict-minerals status not explicitly stated in the verified web data and would require Intel Product Content Disclosure for verification.
