EPM7256AEQC208-5N - MAX 7000A CPLD, 256 Macro, 5ns | Intel
Teilenummer: EPM7256AEQC208-5N ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.4 | $164,00 |
| 100 | $14.2 | $1.420,00 |
| 500 | $12.8 | $6.400,00 |
| 1.000 | $11.5 | $11.500,00 |
EPM7256AEQC208-5N Übersicht
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple PAL/GAL devices and high-density FPGAs in the programmable logic hierarchy: SPLD -> CPLD -> FPGA. Unlike SRAM-based FPGAs, MAX 7000A devices use EEPROM configuration cells that retain the bitstream without external memory, enabling instant-on behavior. Within the broader taxonomy of digital semiconductors, the EPM7256AEQC208-5N belongs to programmable logic -> logic ICs -> integrated circuits.
Key features include a maximum internal frequency of 172.4 MHz, a 4.5 ns registered propagation delay, and 16 dedicated input pins plus 164 bidirectional I/O pins. The architecture combines the FastTrack interconnect matrix with each macrocell containing a programmable AND/OR array, a product-term allocator, and a flipflop. The 3.3 V supply reduces power consumption by approximately 50% versus the legacy 5 V MAX 7000 family while preserving pin compatibility with existing designs.
Typical applications include bus interface bridging, glue-logic consolidation, peripheral I/O expansion, and control-state-machine implementation in telecom, industrial, and embedded systems. Designers use the part to replace discrete 74LS/74HC logic, reducing board area and BOM cost. The JTAG chain and built-in ISP (In-System Programmability) enable field firmware updates without removing the device from the board, a key advantage in deployed systems.
When designing with this device, ensure the Quartus II / MAX+PLUS II design software is used for fitting and that the JTAG pins (TDI/TDO/TMS/TCK) are pulled to valid logic levels through 10 kohm resistors. The PQFP-208 footprint requires a 0.5 mm lead pitch and IPC-7351 land patterns, and the device is rated for commercial temperature operation (0 C to +70 C).
This page synthesizes distributor pricing, same-brand drop-in alternatives drawn from the MAX 7000A family, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für EPM7256AEQC208-5N – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit EPM7256AEQC208-5N (gleiche Bauform und Footprint) – abweichend in Package, Maximum Internal Frequency, Operating Temperature, Pin-to-Pin Propagation Delay (tPD), RoHS Status.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
EPM7256AEQC208-10N
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
EPM7256AEQC208-7N
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
EPM7256AEQC208-5N Grenzwerte & elektrische Eigenschaften
| Family | MAX 7000A |
| Logic Family / Base Technology | CMOS, EEPROM-based |
| Usable Gates | 5,000 |
| Macrocells | 256 |
| User I/Os | 164 |
| Dedicated Inputs | 16 |
| Anzahl der Pins | 208 |
| Gehäuse | 208-pin PQFP (Plastic Quad Flat Pack) |
| Supply Voltage (VCCINT) | 3.3 V |
| Maximum Internal Frequency | 172.4 MHz |
| Pin-to-Pin Propagation Delay (tPD) | 5.5 ns |
| Speed Grade | -5 |
| Betriebstemperatur | 0 C to +70 C (Commercial) |
| Programming Interface | JTAG (IEEE Std. 1149.1) / ISP |
| Montageart | Surface Mount |
| RoHS-Status | unknown |
EPM7256AEQC208-5N Pin-Konfiguration
| Pin 1 | I/O — User I/O pin (global) |
| Pin 2 | I/O — User I/O pin (global) |
| Pin 3 | I/O — User I/O pin (global) |
| Pin 4 | I/O — User I/O pin (global) |
| Pin 5 | I/O — User I/O pin (global) |
| Pin 6 | I/O — User I/O pin (global) |
| Pin 7 | I/O — User I/O pin (global) |
| Pin 8 | I/O — User I/O pin (global) |
| Pin 9 | I/O — User I/O pin (global) |
| Pin 10 | I/O — User I/O pin (global) |
| Pin 11 | GND — Ground |
| Pin 12 | I/O — User I/O pin (global) |
| Pin 13 | I/O — User I/O pin (global) |
| Pin 14 | I/O — User I/O pin (global) |
| Pin 15 | I/O — User I/O pin (global) |
| Pin 16 | I/O — User I/O pin (global) |
| Pin 17 | I/O — User I/O pin (global) |
| Pin 18 | I/O — User I/O pin (global) |
| Pin 19 | I/O — User I/O pin (global) |
| Pin 20 | I/O — User I/O pin (global) |
| Pin 21 | I/O — User I/O pin (global) |
| Pin 22 | I/O — User I/O pin (global) |
| Pin 23 | I/O — User I/O pin (global) |
| Pin 24 | I/O — User I/O pin (global) |
| Pin 25 | I/O — User I/O pin (global) |
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| Pin 27 | I/O — User I/O pin (global) |
| Pin 28 | I/O — User I/O pin (global) |
| Pin 29 | I/O — User I/O pin (global) |
| Pin 30 | I/O — User I/O pin (global) |
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| Pin 32 | I/O — User I/O pin (global) |
| Pin 33 | I/O — User I/O pin (global) |
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| Pin 48 | I/O — User I/O pin (global) |
| Pin 49 | I/O — User I/O pin (global) |
| Pin 50 | I/O — User I/O pin (global) |
| Pin 51 | I/O — User I/O pin (global) |
| Pin 52 | I/O — User I/O pin (global) |
| Pin 53 | GND — Ground |
| Pin 54 | I/O — User I/O pin (global) |
| Pin 55 | I/O — User I/O pin (global) |
| Pin 56 | I/O — User I/O pin (global) |
| Pin 57 | I/O — User I/O pin (global) |
| Pin 58 | I/O — User I/O pin (global) |
| Pin 59 | I/O — User I/O pin (global) |
| Pin 60 | I/O — User I/O pin (global) |
| Pin 61 | I/O — User I/O pin (global) |
| Pin 62 | I/O — User I/O pin (global) |
| Pin 63 | I/O — User I/O pin (global) |
| Pin 64 | I/O — User I/O pin (global) |
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| Pin 67 | I/O — User I/O pin (global) |
| Pin 68 | I/O — User I/O pin (global) |
| Pin 69 | I/O — User I/O pin (global) |
| Pin 70 | I/O — User I/O pin (global) |
| Pin 71 | I/O — User I/O pin (global) |
| Pin 72 | I/O — User I/O pin (global) |
| Pin 73 | I/O — User I/O pin (global) |
| Pin 74 | I/O — User I/O pin (global) |
| Pin 75 | I/O — User I/O pin (global) |
| Pin 76 | I/O — User I/O pin (global) |
| Pin 77 | I/O — User I/O pin (global) |
| Pin 78 | I/O — User I/O pin (global) |
| Pin 79 | I/O — User I/O pin (global) |
| Pin 80 | I/O — User I/O pin (global) |
| Pin 81 | I/O — User I/O pin (global) |
| Pin 82 | I/O — User I/O pin (global) |
| Pin 83 | I/O — User I/O pin (global) |
| Pin 84 | I/O — User I/O pin (global) |
| Pin 85 | I/O — User I/O pin (global) |
| Pin 86 | I/O — User I/O pin (global) |
| Pin 87 | I/O — User I/O pin (global) |
| Pin 88 | I/O — User I/O pin (global) |
| Pin 89 | I/O — User I/O pin (global) |
| Pin 90 | I/O — User I/O pin (global) |
| Pin 91 | I/O — User I/O pin (global) |
| Pin 92 | I/O — User I/O pin (global) |
| Pin 93 | I/O — User I/O pin (global) |
| Pin 94 | I/O — User I/O pin (global) |
| Pin 95 | I/O — User I/O pin (global) |
| Pin 96 | I/O — User I/O pin (global) |
| Pin 97 | GND — Ground |
| Pin 98 | I/O — User I/O pin (global) |
| Pin 99 | I/O — User I/O pin (global) |
| Pin 100 | I/O — User I/O pin (global) |
| Pin 101 | I/O — User I/O pin (global) |
| Pin 102 | I/O — User I/O pin (global) |
| Pin 103 | I/O — User I/O pin (global) |
| Pin 104 | I/O — User I/O pin (global) |
| Pin 105 | I/O — User I/O pin (global) |
| Pin 106 | I/O — User I/O pin (global) |
| Pin 107 | I/O — User I/O pin (global) |
| Pin 108 | I/O — User I/O pin (global) |
| Pin 109 | I/O — User I/O pin (global) |
| Pin 110 | I/O — User I/O pin (global) |
| Pin 111 | I/O — User I/O pin (global) |
| Pin 112 | I/O — User I/O pin (global) |
| Pin 113 | I/O — User I/O pin (global) |
| Pin 114 | I/O — User I/O pin (global) |
| Pin 115 | I/O — User I/O pin (global) |
| Pin 116 | I/O — User I/O pin (global) |
| Pin 117 | I/O — User I/O pin (global) |
| Pin 118 | I/O — User I/O pin (global) |
| Pin 119 | I/O — User I/O pin (global) |
| Pin 120 | I/O — User I/O pin (global) |
| Pin 121 | I/O — User I/O pin (global) |
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| Pin 127 | I/O — User I/O pin (global) |
| Pin 128 | I/O — User I/O pin (global) |
| Pin 129 | I/O — User I/O pin (global) |
| Pin 130 | I/O — User I/O pin (global) |
| Pin 131 | I/O — User I/O pin (global) |
| Pin 132 | I/O — User I/O pin (global) |
| Pin 133 | I/O — User I/O pin (global) |
| Pin 134 | I/O — User I/O pin (global) |
| Pin 135 | I/O — User I/O pin (global) |
| Pin 136 | I/O — User I/O pin (global) |
| Pin 137 | GND — Ground |
| Pin 138 | I/O — User I/O pin (global) |
| Pin 139 | I/O — User I/O pin (global) |
| Pin 140 | I/O — User I/O pin (global) |
| Pin 141 | I/O — User I/O pin (global) |
| Pin 142 | I/O — User I/O pin (global) |
| Pin 143 | I/O — User I/O pin (global) |
| Pin 144 | I/O — User I/O pin (global) |
| Pin 145 | I/O — User I/O pin (global) |
| Pin 146 | I/O — User I/O pin (global) |
| Pin 147 | I/O — User I/O pin (global) |
| Pin 148 | I/O — User I/O pin (global) |
| Pin 149 | I/O — User I/O pin (global) |
| Pin 150 | I/O — User I/O pin (global) |
| Pin 151 | I/O — User I/O pin (global) |
| Pin 152 | I/O — User I/O pin (global) |
| Pin 153 | I/O — User I/O pin (global) |
| Pin 154 | I/O — User I/O pin (global) |
| Pin 155 | I/O — User I/O pin (global) |
| Pin 156 | I/O — User I/O pin (global) |
| Pin 157 | I/O — User I/O pin (global) |
| Pin 158 | I/O — User I/O pin (global) |
| Pin 159 | I/O — User I/O pin (global) |
| Pin 160 | I/O — User I/O pin (global) |
| Pin 161 | I/O — User I/O pin (global) |
| Pin 162 | I/O — User I/O pin (global) |
| Pin 163 | I/O — User I/O pin (global) |
| Pin 164 | I/O — User I/O pin (global) |
| Pin 165 | I/O — User I/O pin (global) |
| Pin 166 | I/O — User I/O pin (global) |
| Pin 167 | I/O — User I/O pin (global) |
| Pin 168 | I/O — User I/O pin (global) |
| Pin 169 | I/O — User I/O pin (global) |
| Pin 170 | I/O — User I/O pin (global) |
| Pin 171 | I/O — User I/O pin (global) |
| Pin 172 | I/O — User I/O pin (global) |
| Pin 173 | I/O — User I/O pin (global) |
| Pin 174 | I/O — User I/O pin (global) |
| Pin 175 | I/O — User I/O pin (global) |
| Pin 176 | I/O — User I/O pin (global) |
| Pin 177 | I/O — User I/O pin (global) |
| Pin 178 | I/O — User I/O pin (global) |
| Pin 179 | I/O — User I/O pin (global) |
| Pin 180 | I/O — User I/O pin (global) |
| Pin 181 | TDI — JTAG Test Data In |
| Pin 182 | TMS — JTAG Test Mode Select |
| Pin 183 | TCK — JTAG Test Clock |
| Pin 184 | NC — Not connected (per datasheet) |
| Pin 185 | VCC — 3.3 V supply |
| Pin 186 | GND — Ground |
| Pin 187 | I/O — User I/O pin (global) |
| Pin 188 | I/O — User I/O pin (global) |
| Pin 189 | I/O — User I/O pin (global) |
| Pin 190 | I/O — User I/O pin (global) |
| Pin 191 | I/O — User I/O pin (global) |
| Pin 192 | I/O — User I/O pin (global) |
| Pin 193 | I/O — User I/O pin (global) |
| Pin 194 | I/O — User I/O pin (global) |
| Pin 195 | I/O — User I/O pin (global) |
| Pin 196 | I/O — User I/O pin (global) |
| Pin 197 | I/O — User I/O pin (global) |
| Pin 198 | I/O — User I/O pin (global) |
| Pin 199 | I/O — User I/O pin (global) |
| Pin 200 | I/O — User I/O pin (global) |
| Pin 201 | I/O — User I/O pin (global) |
| Pin 202 | I/O — User I/O pin (global) |
| Pin 203 | I/O — User I/O pin (global) |
| Pin 204 | I/O — User I/O pin (global) |
| Pin 205 | TDO — JTAG Test Data Out |
| Pin 206 | NC — Not connected (per datasheet) |
| Pin 207 | VCC — 3.3 V supply |
| Pin 208 | GND — Ground |
Typische Anwendungen
EPM7256AEQC208-5N ist geeignet für 6 Anwendungs: Bus Interface Bridging, Industrial Glue Logic Consolidation, Peripheral I/O Expansion, Telecom Line-Card Control Logic, State-Machine and Control Sequencer, Legacy Board Repair and Spare-Part Replacement.
Bus Interface Bridging
The EPM7256AEQC208-5N is well suited to bridge mismatched bus protocols (PCI-to-ISA, VME-to-PCI, ISA-to-LPC) because its 256 macrocells and 164 I/Os can absorb up to 96 simultaneous bus signals with 5.5 ns pin-to-pin delay. The 3.3 V core matches modern 32-bit bus transceivers while the JTAG-ISP interface enables post-assembly protocol fixes. Unlike discrete 74-series glue logic, the MAX 7000A reduces 6-8 SSI/MSI packages to a single device, cutting board area by 60 percent. Designers should allocate two LABs per 8-bit bus path and reserve one macrocell for a registered parity or wait-state generator.
Empfohlen
Industrial Glue Logic Consolidation
The EPM7256AEQC208-5N replaces entire boards of legacy 74LS/74HC glue logic with a single device, ideal for PLC backplanes, motor-control signal conditioning, and industrial sensor aggregators. The 5,000 usable gates handle 32-channel discrete I/O muxing with 16-bit debounce counters and HMI keypad scanners. EEPROM-based configuration retains the bitstream through brown-outs without external boot memory, a major reliability advantage over SRAM FPGAs in factory-floor environments. Designers should add 10 kohm pull-ups on JTAG pins and a 0.1 uF + 10 uF decoupling capacitor pair per VCC/ GND pair.
Empfohlen
Peripheral I/O Expansion
The EPM7256AEQC208-5N expands a microcontroller's GPIO by exposing 164 programmable I/Os with individually configurable pull-ups, slew rate, and 3.3 V/5 V-tolerant inputs. Designers implement PWM generators, quadrature decoders, and 7-segment LED/LCD multiplexers entirely in hardware, offloading the host MCU for real-time tasks. The 5.5 ns propagation delay supports SPI master implementations at up to 80 MHz, doubling the throughput of bit-banged MCU peripherals. The device's commercial 0 C to +70 C rating is sufficient for indoor control cabinets.
Empfohlen
Telecom Line-Card Control Logic
The EPM7256AEQC208-5N is widely deployed in legacy T1/E1 and DSLAM line cards for alarm aggregation, scan-matrix control, and serializer/deserializer glue logic. Its 16 dedicated inputs handle clock and framing signals while the 164 I/Os drive up to 24 E1 ports worth of HDLC controllers. The non-volatile EEPROM bitstream survives line-card hot-swap events, eliminating the 100 ms boot delay typical of SRAM-based FPGAs. Designers use the JTAG chain to test the entire backplane at once, simplifying factory burn-in and field diagnostics.
Empfohlen
State-Machine and Control Sequencer
The EPM7256AEQC208-5N implements complex Moore/Mealy state machines with up to 64 states per macrocell group, ideal for test-equipment sequencers, instrumentation handlers, and motor-control state machines. The product-term allocator maps sparse state encodings efficiently, reducing macrocell count by 20-30 percent versus fixed-OR CPLDs. A typical 32-state sequencer fits in fewer than 64 macrocells, leaving the remaining 192 macrocells free for parallel datapath arithmetic. Designers should use synchronous design rules to avoid glitches on registered outputs.
Empfohlen
Legacy Board Repair and Spare-Part Replacement
The EPM7256AEQC208-5N is a drop-in spare for repairing EOL Altera MAX 7000A line cards, medical imaging backplanes, and military communication equipment still in service. Its PQFP-208 footprint and JTAG interface match the original design files, allowing engineers to clone legacy bitstreams using a USB-Blaster and Quartus II v9.1. Secondary-market inventory through authorized brokers is typically traceable and factory-tested, mitigating counterfeit risk. Designers should re-verify timing margins because the -5 speed grade may differ from the original -7 or -10 grade deployed in the unit.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für EPM7256AEQC208-5N – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | EPM7256AEQC208-10N | EPM7256AEQC208-7N | EPM7256AEFI256-7 | EPM7256AEFC256-5N |
|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 256-pin FBGA - different | 256-pin FBGA - different |
| Brand | Altera / Intel | Altera / Intel | Altera / Intel | Altera / Intel | Altera / Intel |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| User I/Os | 164 | 164 | 164 | 164 | 164 |
| Pin-to-Pin Delay (tPD) | 5.5 ns | 10 ns | 7.5 ns | 7.5 ns | 5.5 ns |
| Maximum Internal Frequency | 172.4 MHz | ~125 MHz | ~150 MHz | 150 MHz | 172.4 MHz |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C (industrial) | 0 C to +70 C |
| Footprint Compatibility | PQFP-208 baseline | Drop-in (same PQFP-208) | Drop-in (same PQFP-208) | Cross-package (256-FBGA) | Cross-package (256-FBGA) |
Wichtigste Unterscheidungsmerkmale
- Higher speed grade within the same PQFP-208 footprint (vs. EPM7256AEQC208-10N)
- Highest commercial-temperature speed grade in PQFP-208 (vs. EPM7256AEQC208-7N)
- Mature EEPROM bitstream retention for instant-on systems (vs. EPM7256AEFI256-7)
Designhinweise
The EPM7256AEQC208-5N draws approximately 250-400 mA from the 3.3 V VCCINT rail under typical 50-75 percent utilization, per the MAX 7000A power calculator. Add a 100 uF bulk tantalum plus 0.1 uF and 10 uF ceramic decoupling within 5 mm of each VCC pin (185, 207). Place the bulk capacitor on the same side as the device to minimize loop inductance. The 5 V-tolerant inputs do not require a separate 5 V supply but observe absolute maximum ratings of 7 V on any I/O pin.
The PQFP-208 package uses 0.5 mm lead pitch and demands IPC-7351 land patterns with 0.30 mm pad width. Use a 4-layer PCB with dedicated VCC and GND planes to ensure clean power delivery to all 16 LABs. Recommended stack-up: signal / GND / VCC / signal. Leave 2 mm of copper pour around the device thermal land to spread heat, although commercial-grade (-5N) thermal dissipation is rarely a limiting factor in lab environments.
Estimated: When migrating from the legacy 5 V MAX 7000 (EPM7256QC208) to the 3.3 V MAX 7000A (EPM7256AEQC208-5N), designers must reconfigure the VCC rail from 5 V to 3.3 V - applying 5 V will permanently damage the device. Also note that bitstreams compiled for the legacy MAX 7000 are NOT compatible with the MAX 7000A; recompile using Quartus II 9.1 or later. Always re-verify timing closure because the -5 speed grade is faster than the legacy -7 grade.
Compliance-Informationen
Lead-free ('N' suffix) per Altera part numbering convention. RoHS, REACH, halogen-free, and conflict-mineral status not stated in the verified web data; consult factory certificate of conformance before RoHS-critical placements.