EPM7256AEQC208-5N - MAX 7000A CPLD, 256 Macro, 5ns | Intel
N.º da peça: EPM7256AEQC208-5N ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para EPM7256AEQC208-5N — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EPM7256AEQC208-5N (mesmo formato e footprint) — diferindo em Package, Maximum Internal Frequency, Operating Temperature, Pin-to-Pin Propagation Delay (tPD), RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPM7256AEQC208-10N
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
EPM7256AEQC208-7N
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
EPM7256AEQC208-5N Classificações máximas e características elétricas
| Family | MAX 7000A |
| Logic Family / Base Technology | CMOS, EEPROM-based |
| Usable Gates | 5,000 |
| Macrocells | 256 |
| User I/Os | 164 |
| Dedicated Inputs | 16 |
| Número de pinos | 208 |
| Encapsulamento | 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 |
| Temperatura de operação | 0 C to +70 C (Commercial) |
| Programming Interface | JTAG (IEEE Std. 1149.1) / ISP |
| Tipo de montagem | Surface Mount |
| Status RoHS | unknown |
Configuração de pinos do EPM7256AEQC208-5N
| Pino 1 | I/O — User I/O pin (global) |
| Pino 2 | I/O — User I/O pin (global) |
| Pino 3 | I/O — User I/O pin (global) |
| Pino 4 | I/O — User I/O pin (global) |
| Pino 5 | I/O — User I/O pin (global) |
| Pino 6 | I/O — User I/O pin (global) |
| Pino 7 | I/O — User I/O pin (global) |
| Pino 8 | I/O — User I/O pin (global) |
| Pino 9 | I/O — User I/O pin (global) |
| Pino 10 | I/O — User I/O pin (global) |
| Pino 11 | GND — Ground |
| Pino 12 | I/O — User I/O pin (global) |
| Pino 13 | I/O — User I/O pin (global) |
| Pino 14 | I/O — User I/O pin (global) |
| Pino 15 | I/O — User I/O pin (global) |
| Pino 16 | I/O — User I/O pin (global) |
| Pino 17 | I/O — User I/O pin (global) |
| Pino 18 | I/O — User I/O pin (global) |
| Pino 19 | I/O — User I/O pin (global) |
| Pino 20 | I/O — User I/O pin (global) |
| Pino 21 | I/O — User I/O pin (global) |
| Pino 22 | I/O — User I/O pin (global) |
| Pino 23 | I/O — User I/O pin (global) |
| Pino 24 | I/O — User I/O pin (global) |
| Pino 25 | I/O — User I/O pin (global) |
| Pino 26 | I/O — User I/O pin (global) |
| Pino 27 | I/O — User I/O pin (global) |
| Pino 28 | I/O — User I/O pin (global) |
| Pino 29 | I/O — User I/O pin (global) |
| Pino 30 | I/O — User I/O pin (global) |
| Pino 31 | I/O — User I/O pin (global) |
| Pino 32 | I/O — User I/O pin (global) |
| Pino 33 | I/O — User I/O pin (global) |
| Pino 34 | I/O — User I/O pin (global) |
| Pino 35 | I/O — User I/O pin (global) |
| Pino 36 | I/O — User I/O pin (global) |
| Pino 37 | I/O — User I/O pin (global) |
| Pino 38 | I/O — User I/O pin (global) |
| Pino 39 | I/O — User I/O pin (global) |
| Pino 40 | I/O — User I/O pin (global) |
| Pino 41 | I/O — User I/O pin (global) |
| Pino 42 | I/O — User I/O pin (global) |
| Pino 43 | I/O — User I/O pin (global) |
| Pino 44 | I/O — User I/O pin (global) |
| Pino 45 | I/O — User I/O pin (global) |
| Pino 46 | I/O — User I/O pin (global) |
| Pino 47 | I/O — User I/O pin (global) |
| Pino 48 | I/O — User I/O pin (global) |
| Pino 49 | I/O — User I/O pin (global) |
| Pino 50 | I/O — User I/O pin (global) |
| Pino 51 | I/O — User I/O pin (global) |
| Pino 52 | I/O — User I/O pin (global) |
| Pino 53 | GND — Ground |
| Pino 54 | I/O — User I/O pin (global) |
| Pino 55 | I/O — User I/O pin (global) |
| Pino 56 | I/O — User I/O pin (global) |
| Pino 57 | I/O — User I/O pin (global) |
| Pino 58 | I/O — User I/O pin (global) |
| Pino 59 | I/O — User I/O pin (global) |
| Pino 60 | I/O — User I/O pin (global) |
| Pino 61 | I/O — User I/O pin (global) |
| Pino 62 | I/O — User I/O pin (global) |
| Pino 63 | I/O — User I/O pin (global) |
| Pino 64 | I/O — User I/O pin (global) |
| Pino 65 | I/O — User I/O pin (global) |
| Pino 66 | I/O — User I/O pin (global) |
| Pino 67 | I/O — User I/O pin (global) |
| Pino 68 | I/O — User I/O pin (global) |
| Pino 69 | I/O — User I/O pin (global) |
| Pino 70 | I/O — User I/O pin (global) |
| Pino 71 | I/O — User I/O pin (global) |
| Pino 72 | I/O — User I/O pin (global) |
| Pino 73 | I/O — User I/O pin (global) |
| Pino 74 | I/O — User I/O pin (global) |
| Pino 75 | I/O — User I/O pin (global) |
| Pino 76 | I/O — User I/O pin (global) |
| Pino 77 | I/O — User I/O pin (global) |
| Pino 78 | I/O — User I/O pin (global) |
| Pino 79 | I/O — User I/O pin (global) |
| Pino 80 | I/O — User I/O pin (global) |
| Pino 81 | I/O — User I/O pin (global) |
| Pino 82 | I/O — User I/O pin (global) |
| Pino 83 | I/O — User I/O pin (global) |
| Pino 84 | I/O — User I/O pin (global) |
| Pino 85 | I/O — User I/O pin (global) |
| Pino 86 | I/O — User I/O pin (global) |
| Pino 87 | I/O — User I/O pin (global) |
| Pino 88 | I/O — User I/O pin (global) |
| Pino 89 | I/O — User I/O pin (global) |
| Pino 90 | I/O — User I/O pin (global) |
| Pino 91 | I/O — User I/O pin (global) |
| Pino 92 | I/O — User I/O pin (global) |
| Pino 93 | I/O — User I/O pin (global) |
| Pino 94 | I/O — User I/O pin (global) |
| Pino 95 | I/O — User I/O pin (global) |
| Pino 96 | I/O — User I/O pin (global) |
| Pino 97 | GND — Ground |
| Pino 98 | I/O — User I/O pin (global) |
| Pino 99 | I/O — User I/O pin (global) |
| Pino 100 | I/O — User I/O pin (global) |
| Pino 101 | I/O — User I/O pin (global) |
| Pino 102 | I/O — User I/O pin (global) |
| Pino 103 | I/O — User I/O pin (global) |
| Pino 104 | I/O — User I/O pin (global) |
| Pino 105 | I/O — User I/O pin (global) |
| Pino 106 | I/O — User I/O pin (global) |
| Pino 107 | I/O — User I/O pin (global) |
| Pino 108 | I/O — User I/O pin (global) |
| Pino 109 | I/O — User I/O pin (global) |
| Pino 110 | I/O — User I/O pin (global) |
| Pino 111 | I/O — User I/O pin (global) |
| Pino 112 | I/O — User I/O pin (global) |
| Pino 113 | I/O — User I/O pin (global) |
| Pino 114 | I/O — User I/O pin (global) |
| Pino 115 | I/O — User I/O pin (global) |
| Pino 116 | I/O — User I/O pin (global) |
| Pino 117 | I/O — User I/O pin (global) |
| Pino 118 | I/O — User I/O pin (global) |
| Pino 119 | I/O — User I/O pin (global) |
| Pino 120 | I/O — User I/O pin (global) |
| Pino 121 | I/O — User I/O pin (global) |
| Pino 122 | I/O — User I/O pin (global) |
| Pino 123 | I/O — User I/O pin (global) |
| Pino 124 | I/O — User I/O pin (global) |
| Pino 125 | I/O — User I/O pin (global) |
| Pino 126 | I/O — User I/O pin (global) |
| Pino 127 | I/O — User I/O pin (global) |
| Pino 128 | I/O — User I/O pin (global) |
| Pino 129 | I/O — User I/O pin (global) |
| Pino 130 | I/O — User I/O pin (global) |
| Pino 131 | I/O — User I/O pin (global) |
| Pino 132 | I/O — User I/O pin (global) |
| Pino 133 | I/O — User I/O pin (global) |
| Pino 134 | I/O — User I/O pin (global) |
| Pino 135 | I/O — User I/O pin (global) |
| Pino 136 | I/O — User I/O pin (global) |
| Pino 137 | GND — Ground |
| Pino 138 | I/O — User I/O pin (global) |
| Pino 139 | I/O — User I/O pin (global) |
| Pino 140 | I/O — User I/O pin (global) |
| Pino 141 | I/O — User I/O pin (global) |
| Pino 142 | I/O — User I/O pin (global) |
| Pino 143 | I/O — User I/O pin (global) |
| Pino 144 | I/O — User I/O pin (global) |
| Pino 145 | I/O — User I/O pin (global) |
| Pino 146 | I/O — User I/O pin (global) |
| Pino 147 | I/O — User I/O pin (global) |
| Pino 148 | I/O — User I/O pin (global) |
| Pino 149 | I/O — User I/O pin (global) |
| Pino 150 | I/O — User I/O pin (global) |
| Pino 151 | I/O — User I/O pin (global) |
| Pino 152 | I/O — User I/O pin (global) |
| Pino 153 | I/O — User I/O pin (global) |
| Pino 154 | I/O — User I/O pin (global) |
| Pino 155 | I/O — User I/O pin (global) |
| Pino 156 | I/O — User I/O pin (global) |
| Pino 157 | I/O — User I/O pin (global) |
| Pino 158 | I/O — User I/O pin (global) |
| Pino 159 | I/O — User I/O pin (global) |
| Pino 160 | I/O — User I/O pin (global) |
| Pino 161 | I/O — User I/O pin (global) |
| Pino 162 | I/O — User I/O pin (global) |
| Pino 163 | I/O — User I/O pin (global) |
| Pino 164 | I/O — User I/O pin (global) |
| Pino 165 | I/O — User I/O pin (global) |
| Pino 166 | I/O — User I/O pin (global) |
| Pino 167 | I/O — User I/O pin (global) |
| Pino 168 | I/O — User I/O pin (global) |
| Pino 169 | I/O — User I/O pin (global) |
| Pino 170 | I/O — User I/O pin (global) |
| Pino 171 | I/O — User I/O pin (global) |
| Pino 172 | I/O — User I/O pin (global) |
| Pino 173 | I/O — User I/O pin (global) |
| Pino 174 | I/O — User I/O pin (global) |
| Pino 175 | I/O — User I/O pin (global) |
| Pino 176 | I/O — User I/O pin (global) |
| Pino 177 | I/O — User I/O pin (global) |
| Pino 178 | I/O — User I/O pin (global) |
| Pino 179 | I/O — User I/O pin (global) |
| Pino 180 | I/O — User I/O pin (global) |
| Pino 181 | TDI — JTAG Test Data In |
| Pino 182 | TMS — JTAG Test Mode Select |
| Pino 183 | TCK — JTAG Test Clock |
| Pino 184 | NC — Not connected (per datasheet) |
| Pino 185 | VCC — 3.3 V supply |
| Pino 186 | GND — Ground |
| Pino 187 | I/O — User I/O pin (global) |
| Pino 188 | I/O — User I/O pin (global) |
| Pino 189 | I/O — User I/O pin (global) |
| Pino 190 | I/O — User I/O pin (global) |
| Pino 191 | I/O — User I/O pin (global) |
| Pino 192 | I/O — User I/O pin (global) |
| Pino 193 | I/O — User I/O pin (global) |
| Pino 194 | I/O — User I/O pin (global) |
| Pino 195 | I/O — User I/O pin (global) |
| Pino 196 | I/O — User I/O pin (global) |
| Pino 197 | I/O — User I/O pin (global) |
| Pino 198 | I/O — User I/O pin (global) |
| Pino 199 | I/O — User I/O pin (global) |
| Pino 200 | I/O — User I/O pin (global) |
| Pino 201 | I/O — User I/O pin (global) |
| Pino 202 | I/O — User I/O pin (global) |
| Pino 203 | I/O — User I/O pin (global) |
| Pino 204 | I/O — User I/O pin (global) |
| Pino 205 | TDO — JTAG Test Data Out |
| Pino 206 | NC — Not connected (per datasheet) |
| Pino 207 | VCC — 3.3 V supply |
| Pino 208 | GND — Ground |
Aplicações típicas
EPM7256AEQC208-5N é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPM7256AEQC208-5N — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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) |
Principais diferenciais
- 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)
Notas de projeto
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.
Informações de conformidade
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.