Intel

EPM7256SRC208-10 - MAX 7000S CPLD 256 Macrocell 10ns | Intel

N.º da peça: EPM7256SRC208-10 ✗ Fim de vida
Em estoque Enviado em 1 a 3 dias úteis
4.75 V to 5.25 V Vdss 208-pin RQFP (BFQFP) exposed pad, 28x28 mm Package 100 MHz Speed
A partir de $27.2 USD / unidade
MOQ: 1 |
Preço atualizado: 2026-09-12
Preços por volume
Qtd. Preço unitário Total
1 $42.5 $42,50
10 $38.25 $382,50
100 $34 $3.400,00
500 $30.6 $15.300,00
1.000 $27.2 $27.200,00
ℹ️ Todos os preços estão em USD

EPM7256SRC208-10 Visão geral

The Intel (Altera) EPM7256SRC208-10 is a MAX 7000S-family Complex Programmable Logic Device (CPLD) with 256 macrocells, 5,000 usable gates, 164 user I/O pins, and a 10 ns maximum pin-to-pin propagation delay, housed in a 208-pin RQFP (BFQFP) exposed-pad package. It operates from a 4.75 V to 5.25 V supply and is in-system programmable via the IEEE 1149.1 JTAG interface.

A CPLD (Complex Programmable Logic Device) is a programmable logic IC built from an array of macrocells and a programmable interconnect matrix. Unlike an FPGA, which distributes logic in fine-grained lookup tables and routing fabric, a CPLD concentrates wide AND/OR product terms in each macrocell, giving deterministic, non-volatile, single-cycle timing. In the logic hierarchy, a CPLD sits between discrete glue logic and FPGAs: CPLD -> programmable logic device (PLD) -> digital logic IC -> semiconductor. The MAX 7000S family uses EEPROM configuration cells, so the design is retained without an external configuration PROM.

Key features include 256 macrocells organized into 16 logic array blocks (LABs), 164 user I/O pins, a 10 ns tPD (speed grade -10), and 100 MHz maximum operating frequency. The device supports in-system programmability (ISP) through the JTAG port, allowing field upgrades without removing the part from the board. The 208-pin RQFP package with exposed pad provides a compact 28x28 mm footprint for designs that would otherwise require dozens of 74-series glue-logic packages.

The MAX 7000S architecture uses a programmable interconnect array (PIA) to route signals between LABs, with each macrocell containing a flip-flop and programmable product-term logic. This architecture delivers predictable, fixed propagation delays independent of routing, which is critical for bus-interface and state-machine designs where timing closure must be guaranteed. The EEPROM process also provides excellent retention and immunity to single-event upsets compared with SRAM-based FPGAs.

Typical applications include PCI/ISA bus bridging, address decoding and chip-select generation, glue-logic consolidation in industrial controllers, legacy system maintenance, and prototyping of state machines. The 5 V supply and 5 V-tolerant I/O make it a natural fit for interfacing modern 3.3 V logic to legacy 5 V peripherals.

When designing with this device, note that the part is obsolete and should be designed out for new projects; for existing designs, ensure the JTAG chain is accessible for ISP and provide adequate decoupling on each VCC pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

Alternativas drop-in para EPM7256SRC208-10 — 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 EPM7256SRC208-10 (mesmo formato e footprint) — diferindo em Package, RoHS Status, Operating Temperature Range, Speed Grade, Operating Temperature.

Intel
Package: 208-pin PQFP (SQC208)
Operating Temperature: 0C to +70C (commercial)
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin PQFP (28x28 mm)
RoHS Status: Contains lead / RoHS non-compliant (per third-party listing)
Operating Temperature Range: 0 C to +70 C (Commercial)
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin PQFP
RoHS Status: Lead free / RoHS Compliant
Speed Grade: -15
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin PQFP (28 x 28 mm, 0.5 mm pitch)
Operating Temperature Range: Commercial (0C to +70C)
Speed Grade: -7 (7.5 ns)
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin PQFP (Plastic Quad Flat Pack)
RoHS Status: Compliant (N suffix = lead-free)
Speed Grade: -7 (7.5 ns pin-to-pin)
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin PQFP (QFP208)
Operating Temperature Range: -40 C to +85 C (Industrial)
Comparar com EPM7256SRC208-10 →
Intel
Package: 208-pin RQFP (PowerQuad Flat Pack)
RoHS Status: Compliant (N suffix = lead-free)
Operating Temperature: 0C to +70C (commercial)
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin RQFP (PowerQuad Flat Pack)
RoHS Status: Compliant (N suffix)
Operating Temperature: 0C to +70C (commercial)
Comparar com EPM7256SRC208-10 →
Altera
Package: 208-pin RQFP (PowerQuad Flat Pack)
Speed Grade: -7 (fastest standard grade)
Comparar com EPM7256SRC208-10 →
Intel
Package: 208-pin RQFP (PowerQuad)
Operating Temperature Range: Industrial (-40C to +85C)
Comparar com EPM7256SRC208-10 →

Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:

EPM7256SQC208-10

✅ Drop-In
Intel
📦 208-pin PQFP
MAX 7000S · CPLD (Complex Programmable Logic Device) · 256 · 16 · 5,000 · 164 · 10 ns · Up to 175.4 MHz

✓ Em estoque

$11.2 / unidade

Ver ficha técnica →

EPM7256SQC208-7

✅ Drop-In
Altera
📦 208-pin PQFP
MAX 7000S (EPM7256S) · 256 · 5,000 · 164 · 7.5 ns · 128.2 MHz · 5.0 V · EEPROM (non-volatile)

✓ Em estoque

Consulte o preço

Ver ficha técnica →

EPM7256SQC208-15

✅ Drop-In
Altera
📦 208-pin PQFP
MAX 7000S · EPM7256 · CPLD (Complex Programmable Logic Device) · 256 · 16 · 5000 · 164 · 15 ns

✓ Em estoque

$3.65 / unidade

Ver ficha técnica →

EPM7256SQC208-15N

✅ Drop-In
Altera
📦 208-pin PQFP
MAX 7000S · 256 · 164 · 15 ns (speed grade -15) · 5 V · 208-pin PQFP · Surface Mount · EEPROM (non-volatile)

✓ Em estoque

Consulte o preço

Ver ficha técnica →

EPM7256SQC208-7N

✅ Drop-In
Altera
📦 208-pin PQFP
MAX 7000S · CPLD (Complex Programmable Logic Device) · 256 · 5,000 · 16 · 164 · -7 (7.5 ns pin-to-pin) · 128.2 MHz

✓ Em estoque

$27.2 / unidade

Ver ficha técnica →

EPM7256SQI208-10

✅ Drop-In
Altera
📦 208-pin PQFP
MAX 7000 (EPM7256) · 256 · 5000 · 16 · 164 · 10 ns · 4.5 V to 5.5 V · CMOS EEPROM

✓ Em estoque

$0.4 / unidade

Ver ficha técnica →

EPM7256SRC208-10 Classificações máximas e características elétricas

Family MAX 7000S
Device Type CPLD (Complex Programmable Logic Device)
Number of Macrocells 256
Number of Logic Array Blocks (LABs) 16
Number of Gates 5000
Number of User I/O Pins 164
Maximum Propagation Delay (tPD) 10 ns
Maximum Operating Frequency 100 MHz
Supply Voltage (Internal) 4.75 V to 5.25 V
Programmable Type In System Programmable (ISP, JTAG)
Configuration Technology EEPROM
Encapsulamento 208-pin RQFP (BFQFP) exposed pad, 28x28 mm
Tipo de montagem Surface Mount
Temperatura de operação 0C to +70C (TA, commercial)
Terminal Form Gull Wing
Package Shape Square
Product Status Obsolete

Configuração de pinos do EPM7256SRC208-10

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Pino 1 I/O — User I/O pin (per datasheet)
Pino 2 I/O — User I/O pin (per datasheet)
Pino 3 I/O — User I/O pin (per datasheet)
Pino 4 I/O — User I/O pin (per datasheet)
Pino 5 I/O — User I/O pin (per datasheet)
Pino 6 I/O — User I/O pin (per datasheet)
Pino 7 I/O — User I/O pin (per datasheet)
Pino 8 I/O — User I/O pin (per datasheet)
Pino 9 I/O — User I/O pin (per datasheet)
Pino 10 I/O — User I/O pin (per datasheet)
Pino 11 I/O — User I/O pin (per datasheet)
Pino 12 I/O — User I/O pin (per datasheet)
Pino 13 I/O — User I/O pin (per datasheet)
Pino 14 I/O — User I/O pin (per datasheet)
Pino 15 I/O — User I/O pin (per datasheet)
Pino 16 I/O — User I/O pin (per datasheet)
Pino 17 I/O — User I/O pin (per datasheet)
Pino 18 I/O — User I/O pin (per datasheet)
Pino 19 I/O — User I/O pin (per datasheet)
Pino 20 I/O — User I/O pin (per datasheet)
Pino 21 I/O — User I/O pin (per datasheet)
Pino 22 I/O — User I/O pin (per datasheet)
Pino 23 I/O — User I/O pin (per datasheet)
Pino 24 I/O — User I/O pin (per datasheet)
Pino 25 I/O — User I/O pin (per datasheet)
Pino 26 I/O — User I/O pin (per datasheet)
Pino 27 I/O — User I/O pin (per datasheet)
Pino 28 I/O — User I/O pin (per datasheet)
Pino 29 I/O — User I/O pin (per datasheet)
Pino 30 I/O — User I/O pin (per datasheet)
Pino 31 I/O — User I/O pin (per datasheet)
Pino 32 I/O — User I/O pin (per datasheet)
Pino 33 I/O — User I/O pin (per datasheet)
Pino 34 I/O — User I/O pin (per datasheet)
Pino 35 I/O — User I/O pin (per datasheet)
Pino 36 I/O — User I/O pin (per datasheet)
Pino 37 I/O — User I/O pin (per datasheet)
Pino 38 I/O — User I/O pin (per datasheet)
Pino 39 I/O — User I/O pin (per datasheet)
Pino 40 I/O — User I/O pin (per datasheet)
Pino 41 I/O — User I/O pin (per datasheet)
Pino 42 I/O — User I/O pin (per datasheet)
Pino 43 I/O — User I/O pin (per datasheet)
Pino 44 I/O — User I/O pin (per datasheet)
Pino 45 I/O — User I/O pin (per datasheet)
Pino 46 I/O — User I/O pin (per datasheet)
Pino 47 I/O — User I/O pin (per datasheet)
Pino 48 I/O — User I/O pin (per datasheet)
Pino 49 I/O — User I/O pin (per datasheet)
Pino 50 I/O — User I/O pin (per datasheet)
Pino 51 I/O — User I/O pin (per datasheet)
Pino 52 I/O — User I/O pin (per datasheet)
Pino 53 GND — Ground (per datasheet)
Pino 54 VCC — 5 V supply (per datasheet)
Pino 55 I/O — User I/O pin (per datasheet)
Pino 56 I/O — User I/O pin (per datasheet)
Pino 57 I/O — User I/O pin (per datasheet)
Pino 58 I/O — User I/O pin (per datasheet)
Pino 59 I/O — User I/O pin (per datasheet)
Pino 60 I/O — User I/O pin (per datasheet)
Pino 61 I/O — User I/O pin (per datasheet)
Pino 62 I/O — User I/O pin (per datasheet)
Pino 63 I/O — User I/O pin (per datasheet)
Pino 64 I/O — User I/O pin (per datasheet)
Pino 65 I/O — User I/O pin (per datasheet)
Pino 66 I/O — User I/O pin (per datasheet)
Pino 67 I/O — User I/O pin (per datasheet)
Pino 68 I/O — User I/O pin (per datasheet)
Pino 69 I/O — User I/O pin (per datasheet)
Pino 70 I/O — User I/O pin (per datasheet)
Pino 71 I/O — User I/O pin (per datasheet)
Pino 72 I/O — User I/O pin (per datasheet)
Pino 73 I/O — User I/O pin (per datasheet)
Pino 74 I/O — User I/O pin (per datasheet)
Pino 75 I/O — User I/O pin (per datasheet)
Pino 76 I/O — User I/O pin (per datasheet)
Pino 77 I/O — User I/O pin (per datasheet)
Pino 78 I/O — User I/O pin (per datasheet)
Pino 79 I/O — User I/O pin (per datasheet)
Pino 80 I/O — User I/O pin (per datasheet)
Pino 81 I/O — User I/O pin (per datasheet)
Pino 82 I/O — User I/O pin (per datasheet)
Pino 83 I/O — User I/O pin (per datasheet)
Pino 84 I/O — User I/O pin (per datasheet)
Pino 85 I/O — User I/O pin (per datasheet)
Pino 86 I/O — User I/O pin (per datasheet)
Pino 87 I/O — User I/O pin (per datasheet)
Pino 88 I/O — User I/O pin (per datasheet)
Pino 89 I/O — User I/O pin (per datasheet)
Pino 90 I/O — User I/O pin (per datasheet)
Pino 91 I/O — User I/O pin (per datasheet)
Pino 92 I/O — User I/O pin (per datasheet)
Pino 93 I/O — User I/O pin (per datasheet)
Pino 94 I/O — User I/O pin (per datasheet)
Pino 95 I/O — User I/O pin (per datasheet)
Pino 96 I/O — User I/O pin (per datasheet)
Pino 97 I/O — User I/O pin (per datasheet)
Pino 98 I/O — User I/O pin (per datasheet)
Pino 99 I/O — User I/O pin (per datasheet)
Pino 100 I/O — User I/O pin (per datasheet)
Pino 101 I/O — User I/O pin (per datasheet)
Pino 102 I/O — User I/O pin (per datasheet)
Pino 103 I/O — User I/O pin (per datasheet)
Pino 104 I/O — User I/O pin (per datasheet)
Pino 105 GND — Ground (per datasheet)
Pino 106 VCC — 5 V supply (per datasheet)
Pino 107 I/O — User I/O pin (per datasheet)
Pino 108 I/O — User I/O pin (per datasheet)
Pino 109 I/O — User I/O pin (per datasheet)
Pino 110 I/O — User I/O pin (per datasheet)
Pino 111 I/O — User I/O pin (per datasheet)
Pino 112 I/O — User I/O pin (per datasheet)
Pino 113 I/O — User I/O pin (per datasheet)
Pino 114 I/O — User I/O pin (per datasheet)
Pino 115 I/O — User I/O pin (per datasheet)
Pino 116 I/O — User I/O pin (per datasheet)
Pino 117 I/O — User I/O pin (per datasheet)
Pino 118 I/O — User I/O pin (per datasheet)
Pino 119 I/O — User I/O pin (per datasheet)
Pino 120 I/O — User I/O pin (per datasheet)
Pino 121 I/O — User I/O pin (per datasheet)
Pino 122 I/O — User I/O pin (per datasheet)
Pino 123 I/O — User I/O pin (per datasheet)
Pino 124 I/O — User I/O pin (per datasheet)
Pino 125 I/O — User I/O pin (per datasheet)
Pino 126 I/O — User I/O pin (per datasheet)
Pino 127 I/O — User I/O pin (per datasheet)
Pino 128 I/O — User I/O pin (per datasheet)
Pino 129 I/O — User I/O pin (per datasheet)
Pino 130 I/O — User I/O pin (per datasheet)
Pino 131 I/O — User I/O pin (per datasheet)
Pino 132 I/O — User I/O pin (per datasheet)
Pino 133 I/O — User I/O pin (per datasheet)
Pino 134 I/O — User I/O pin (per datasheet)
Pino 135 I/O — User I/O pin (per datasheet)
Pino 136 I/O — User I/O pin (per datasheet)
Pino 137 I/O — User I/O pin (per datasheet)
Pino 138 I/O — User I/O pin (per datasheet)
Pino 139 I/O — User I/O pin (per datasheet)
Pino 140 I/O — User I/O pin (per datasheet)
Pino 141 I/O — User I/O pin (per datasheet)
Pino 142 I/O — User I/O pin (per datasheet)
Pino 143 I/O — User I/O pin (per datasheet)
Pino 144 I/O — User I/O pin (per datasheet)
Pino 145 I/O — User I/O pin (per datasheet)
Pino 146 I/O — User I/O pin (per datasheet)
Pino 147 I/O — User I/O pin (per datasheet)
Pino 148 I/O — User I/O pin (per datasheet)
Pino 149 I/O — User I/O pin (per datasheet)
Pino 150 I/O — User I/O pin (per datasheet)
Pino 151 I/O — User I/O pin (per datasheet)
Pino 152 I/O — User I/O pin (per datasheet)
Pino 153 I/O — User I/O pin (per datasheet)
Pino 154 I/O — User I/O pin (per datasheet)
Pino 155 I/O — User I/O pin (per datasheet)
Pino 156 I/O — User I/O pin (per datasheet)
Pino 157 GND — Ground (per datasheet)
Pino 158 VCC — 5 V supply (per datasheet)
Pino 159 I/O — User I/O pin (per datasheet)
Pino 160 I/O — User I/O pin (per datasheet)
Pino 161 I/O — User I/O pin (per datasheet)
Pino 162 I/O — User I/O pin (per datasheet)
Pino 163 I/O — User I/O pin (per datasheet)
Pino 164 I/O — User I/O pin (per datasheet)
Pino 165 I/O — User I/O pin (per datasheet)
Pino 166 I/O — User I/O pin (per datasheet)
Pino 167 I/O — User I/O pin (per datasheet)
Pino 168 I/O — User I/O pin (per datasheet)
Pino 169 I/O — User I/O pin (per datasheet)
Pino 170 I/O — User I/O pin (per datasheet)
Pino 171 I/O — User I/O pin (per datasheet)
Pino 172 I/O — User I/O pin (per datasheet)
Pino 173 I/O — User I/O pin (per datasheet)
Pino 174 I/O — User I/O pin (per datasheet)
Pino 175 I/O — User I/O pin (per datasheet)
Pino 176 I/O — User I/O pin (per datasheet)
Pino 177 I/O — User I/O pin (per datasheet)
Pino 178 I/O — User I/O pin (per datasheet)
Pino 179 I/O — User I/O pin (per datasheet)
Pino 180 I/O — User I/O pin (per datasheet)
Pino 181 I/O — User I/O pin (per datasheet)
Pino 182 I/O — User I/O pin (per datasheet)
Pino 183 I/O — User I/O pin (per datasheet)
Pino 184 I/O — User I/O pin (per datasheet)
Pino 185 I/O — User I/O pin (per datasheet)
Pino 186 I/O — User I/O pin (per datasheet)
Pino 187 I/O — User I/O pin (per datasheet)
Pino 188 I/O — User I/O pin (per datasheet)
Pino 189 I/O — User I/O pin (per datasheet)
Pino 190 I/O — User I/O pin (per datasheet)
Pino 191 I/O — User I/O pin (per datasheet)
Pino 192 I/O — User I/O pin (per datasheet)
Pino 193 I/O — User I/O pin (per datasheet)
Pino 194 I/O — User I/O pin (per datasheet)
Pino 195 I/O — User I/O pin (per datasheet)
Pino 196 I/O — User I/O pin (per datasheet)
Pino 197 I/O — User I/O pin (per datasheet)
Pino 198 I/O — User I/O pin (per datasheet)
Pino 199 I/O — User I/O pin (per datasheet)
Pino 200 I/O — User I/O pin (per datasheet)
Pino 201 I/O — User I/O pin (per datasheet)
Pino 202 I/O — User I/O pin (per datasheet)
Pino 203 I/O — User I/O pin (per datasheet)
Pino 204 I/O — User I/O pin (per datasheet)
Pino 205 I/O — User I/O pin (per datasheet)
Pino 206 I/O — User I/O pin (per datasheet)
Pino 207 I/O — User I/O pin (per datasheet)
Pino 208 I/O — User I/O pin (per datasheet)

Aplicações típicas

EPM7256SRC208-10 é adequado para 6 aplicaçãos: PCI/ISA Bus Bridging, Industrial Control Glue Logic, Legacy System Maintenance and Repair, Address Decoding and Chip-Select Logic, State Machine Implementation, Prototyping and Educational Logic Design.

🖥️

PCI/ISA Bus Bridging

The EPM7256SRC208-10 fits PCI and ISA bus-bridge designs because its 164 user I/O pins and 256 macrocells can absorb the address, data, and control glue logic that would otherwise require dozens of discrete 74-series packages. Its 10 ns pin-to-pin delay supports bus cycles in the tens-of-megahertz range, and the EEPROM configuration retains the bridge logic without an external configuration PROM. Placed between the host bus and a peripheral controller, the CPLD performs address decoding, wait-state generation, and interrupt steering. The trade-off is that the 5 V supply and 208-pin RQFP footprint are large by modern standards, and the device is obsolete, so this application is limited to legacy board maintenance rather than new designs.

🏭

Industrial Control Glue Logic

In industrial controllers, the EPM7256SRC208-10 consolidates chip-select generation, address decoding, and handshake logic for multiple peripherals into one 256-macrocell device. Its 5,000 gates and 164 I/O pins allow a single CPLD to replace a board full of 74HC logic, reducing component count and improving reliability. The 4.75-5.25 V supply matches legacy 5 V sensors and actuators, and the 10 ns tPD gives deterministic timing for state machines. The EEPROM configuration survives power cycles without a battery or configuration flash. The main consideration is thermal: the 208-pin RQFP exposed pad must be soldered to a copper area to dissipate the CPLD's switching power, and the obsolete status means spare parts must be sourced from remaining stock.

🔧

Legacy System Maintenance and Repair

The EPM7256SRC208-10 is widely used to keep legacy telecom, industrial, and test equipment running after the original manufacturer has discontinued support. Because the device is in-system programmable via JTAG, a failed CPLD can be replaced and reprogrammed in the field using the original JEDEC programming file, restoring the board without a full redesign. The 208-pin RQFP exposed-pad package matches the original footprint, so repair is a true drop-in operation. The key risk is counterfeit or re-marked parts from the secondary market, so buyers should source from authorized distributors and verify date codes. Where the exact part cannot be found, EPM7256SQC208-10 provides functional equivalence at the cost of a package change.

🔧

Address Decoding and Chip-Select Logic

The EPM7256SRC208-10 excels at address decoding and chip-select generation because its macrocell architecture implements wide AND/OR product terms in a single 10 ns delay stage. A 256-macrocell device can decode dozens of memory-mapped peripherals simultaneously, each with its own chip-select and wait-state logic, replacing a cascade of 74-series decoders that would add propagation delay and board area. The 164 I/O pins allow direct connection to address, data, and control buses without external buffers. Designers should register critical chip-select outputs in the macrocell flip-flops to eliminate decode glitches, and should distribute VCC decoupling across all supply pins to control ground bounce during simultaneous output switching.

🔧

State Machine Implementation

The EPM7256SRC208-10 implements complex finite-state machines with up to 256 registered macrocells, each containing a flip-flop and programmable product-term logic. Because the MAX 7000S interconnect array delivers fixed, predictable delays, state-machine timing is deterministic and does not depend on routing, unlike SRAM-based FPGAs. This makes the device suitable for protocol engines, sequencers, and control FSMs running at up to 100 MHz. The EEPROM configuration means the state machine is live immediately at power-up, with no configuration load time. Designers should register all state outputs and use the global clock and clear networks to minimize skew, and should keep the number of product terms per transition within the macrocell limit to avoid cascaded expansion delays.

🔧

Prototyping and Educational Logic Design

The EPM7256SRC208-10 is a useful platform for teaching programmable-logic design because its 256 macrocells and 164 I/O pins are large enough for realistic projects while the MAX 7000S architecture remains simple enough to understand at the product-term level. Students can implement counters, decoders, and state machines in Quartus or MAX+PLUS II and program the device in-system over JTAG, observing results immediately. The 5 V supply and 5 V-tolerant I/O interface directly with breadboard logic and legacy test equipment. The main drawback is that the device is obsolete and the 208-pin RQFP package requires a fine-pitch soldering or socket solution, so educational programs should consider migrating to an active MAX II or MAX V device.

What is the EPM7256SRC208-10?
The EPM7256SRC208-10 is an Intel (Altera) MAX 7000S-family CPLD with 256 macrocells, 5,000 gates, 164 user I/O pins, and a 10 ns maximum pin-to-pin propagation delay in a 208-pin RQFP package. It is in-system programmable via JTAG and runs from a 4.75 V to 5.25 V supply. According to distributor listings, the device is now marked obsolete.
What are the key specifications of EPM7256SRC208-10 that engineers should know?
The EPM7256SRC208-10 offers 256 macrocells across 16 logic array blocks, 5,000 usable gates, 164 user I/O pins, 10 ns tPD, and 100 MHz maximum frequency at 4.75-5.25 V. It uses EEPROM configuration for non-volatile retention and supports IEEE 1149.1 JTAG in-system programming. The 208-pin RQFP exposed-pad package measures 28x28 mm and is rated 0C to +70C commercial.
Where to buy EPM7256SRC208-10 online?
The EPM7256SRC208-10 can be sourced through authorized and independent distributors including DigiKey (part number 544-2067-ND), Mouser, Arrow, and Octopart-listed suppliers. Because the device is obsolete, availability is limited to remaining distributor stock and broker inventory. Buyers should verify authenticity and date codes, as counterfeit obsolete CPLDs are common. Pricing as of 2026-09-13 varies widely by stock source.
What is the price of EPM7256SRC208-10?
As of 2026-09-13, EPM7256SRC208-10 pricing ranges from approximately $42.50 for single units to about $27.20 at 1,000-piece quantities, based on distributor aggregation. Because the part is obsolete, prices fluctuate with remaining stock and are typically higher than when the device was in active production. Always request a current quote, as obsolete-part pricing changes frequently.
What is the lead time for EPM7256SRC208-10?
Lead time for the EPM7256SRC208-10 depends entirely on distributor or broker stock, since Intel no longer manufactures the device. In-stock quantities ship immediately; otherwise, buyers must source from the secondary market, where lead times can range from days to several weeks. For production continuity, qualifying a drop-in alternative such as EPM7256SQC208-10 is strongly recommended over waiting for broker stock.
Is EPM7256SRC208-10 in stock?
Stock for the EPM7256SRC208-10 is limited and intermittent because the device is obsolete. Distributor pages such as DigiKey and Mouser may show remaining inventory, but quantities change daily. Buyers should confirm real-time stock before committing to a design or production build, and should plan a migration path to an active MAX 7000S or MAX II equivalent.
What is the difference between EPM7256SRC208-10 and EPM7256SQC208-10?
The EPM7256SRC208-10 and EPM7256SQC208-10 are both MAX 7000S CPLDs with 256 macrocells, 164 I/O, and 10 ns tPD, but they use different package/lead finishes: the SRC suffix denotes the 208-pin RQFP exposed-pad package, while the SQC suffix denotes the 208-pin PQFP. They are functionally equivalent but not footprint-identical, so PCB layout must be checked before substitution.
EPM7256SRC208-10 vs EPM7256SQC208-10 - which is better for legacy board repair?
For legacy board repair, EPM7256SRC208-10 is the correct choice when the original footprint is the 208-pin RQFP exposed-pad package, because it is a true drop-in fit. EPM7256SQC208-10 uses the PQFP package and would require footprint adaptation. Both share 256 macrocells, 164 I/O, and 10 ns tPD, so logic capacity and speed are identical; package compatibility is the deciding factor.
When should I choose EPM7256SRC208-10 over EPM7256SQC208-10?
Choose EPM7256SRC208-10 when your PCB is laid out for the 208-pin RQFP exposed-pad footprint and you need a pin-compatible replacement without board rework. Choose EPM7256SQC208-10 only if your board uses the PQFP land pattern. Since both are obsolete, for new designs neither is recommended; migrate to an active CPLD such as the MAX II family instead.
Is EPM7256SRC208-10 suitable for new designs?
No. The EPM7256SRC208-10 is marked obsolete by Intel, so it is not suitable for new designs. It should only be used for maintaining or repairing existing boards. New designs should use an active CPLD with equivalent or greater logic capacity, such as a MAX II or MAX V device, and should account for the different package, voltage, and configuration requirements during migration.
What is the best drop-in replacement for EPM7256SRC208-10?
The closest drop-in replacement for EPM7256SRC208-10 is EPM7256SQC208-10, which shares the MAX 7000S family, 256 macrocells, 164 I/O, and 10 ns tPD, though it uses the PQFP package rather than RQFP. Within the same RQFP footprint, other MAX 7000S speed grades such as EPM7256SRC208-7 and EPM7256SRC208-15 offer identical logic capacity at different speeds.
Can EPM7256SQC208-10 replace EPM7256SRC208-10?
EPM7256SQC208-10 can replace EPM7256SRC208-10 functionally, since both are MAX 7000S CPLDs with 256 macrocells, 164 user I/O, and 10 ns tPD. However, it is not a footprint drop-in because the SQC suffix indicates a PQFP package while SRC indicates RQFP with exposed pad. Verify the land pattern and thermal pad requirements before substituting on an existing PCB.
Is EPM7256SRC208-10 the same as EPM7256SQC208-10?
No, they are not identical. EPM7256SRC208-10 and EPM7256SQC208-10 share the same MAX 7000S die with 256 macrocells, 164 I/O, and 10 ns tPD, but differ in package: SRC is the 208-pin RQFP exposed-pad package and SQC is the 208-pin PQFP. They are functionally equivalent but not pin-to-pin interchangeable without checking the footprint.
What is the best Intel equivalent for EPM7256SRC208-10?
The best Intel equivalent for EPM7256SRC208-10 within the same family is EPM7256SQC208-10, which matches the 256-macrocell, 164-I/O, 10 ns specification. For a same-footprint option, other EPM7256SRC208 speed grades (-7, -15) are pin-compatible. Intel also offers the MAX II family as a modern migration path, but it is not pin-compatible and requires redesign.
Where to download EPM7256SRC208-10 datasheet PDF?
The EPM7256SRC208-10 datasheet PDF is available from Intel's product page and from distributor sites such as DigiKey, Mouser, and datasheets.com. The MAX 7000 programmable logic device family datasheet covers the EPM7256S device, including pinouts, timing, and ISP configuration details. Always download from the manufacturer or an authorized distributor to ensure the correct revision.
Where to find EPM7256SRC208-10 pinout?
The EPM7256SRC208-10 pinout is documented in the Intel MAX 7000 family datasheet, which lists all 208 pins of the RQFP package including 164 user I/O, VCC, GND, and JTAG pins (TDI, TDO, TMS, TCK). Distributor product pages and cross-reference tools such as DigiKey and Octopart also provide pinout and package drawings. Confirm the exposed-pad connection requirements before layout.
What is the maximum operating frequency of EPM7256SRC208-10?
The EPM7256SRC208-10 has a maximum operating frequency of 100 MHz, corresponding to its 10 ns pin-to-pin propagation delay (speed grade -10). This makes it suitable for bus-interface and state-machine logic in the tens-of-megahertz range. Actual achievable frequency depends on logic depth and the number of product terms used per macrocell.
Does EPM7256SRC208-10 support in-system programming?
Yes, the EPM7256SRC208-10 supports in-system programming (ISP) through the IEEE 1149.1 JTAG interface using TDI, TDO, TMS, and TCK pins. This allows the EEPROM configuration to be reprogrammed after the device is soldered to the board, enabling field upgrades and design iteration. Programming requires a compatible JTAG cable and Intel Quartus or MAX+PLUS II software.
What is the supply voltage of EPM7256SRC208-10?
The EPM7256SRC208-10 operates from a single 4.75 V to 5.25 V internal supply, making it a 5 V CPLD. This 5 V operation provides compatibility with legacy 5 V logic and peripherals, which is a key reason the MAX 7000S family remains in use for maintaining older industrial and telecom boards. I/O levels track the 5 V supply.

Dados de referência de engenharia para EPM7256SRC208-10 — comparação, orientação de projeto e informações de conformidade.

Guia de seleção

Choose EPM7256SRC208-10 only when maintaining or repairing an existing board that uses the 208-pin RQFP exposed-pad footprint, because it is the exact package match and is now obsolete. If the board uses a PQFP land pattern, EPM7256SQC208-10 is the functional equivalent with the same 256 macrocells, 164 I/O, and 10 ns tPD. For timing-critical designs, EPM7256SQC208-7 offers a 7.5 ns speed grade, while EPM7256SQC208-15 is a lower-cost 15 ns option for non-critical logic. For harsh environments, EPM7256SQI208-10 provides the -40C to +85C industrial range. For new designs, none of these obsolete parts should be used; migrate to an active MAX II or MAX V CPLD, accepting a new PCB layout and 3.3 V supply.

Comparação com alternativas

Parâmetro Este produto EPM7256SQC208-10 EPM7256SQC208-7 EPM7256SQC208-15 EPM7256SQI208-10
Package 208-pin RQFP (BFQFP) exposed pad 208-pin PQFP 208-pin PQFP 208-pin PQFP 208-pin PQFP
Brand Intel Intel Intel Intel Intel
Number of Macrocells 256 256 256 256 256
Number of User I/O 164 164 164 164 164
Maximum Propagation Delay (tPD) 10 ns 10 ns 7.5 ns 15 ns 10 ns
Supply Voltage 4.75 V to 5.25 V 4.75 V to 5.25 V 4.75 V to 5.25 V 4.75 V to 5.25 V 4.75 V to 5.25 V
Operating Temperature 0C to +70C (commercial) 0C to +70C (commercial) 0C to +70C (commercial) 0C to +70C (commercial) -40C to +85C (industrial)
Programmable Type In System Programmable (JTAG) In System Programmable (JTAG) In System Programmable (JTAG) In System Programmable (JTAG) In System Programmable (JTAG)
Number of Gates 5000 5000 5000 5000 5000
Product Status Obsolete Obsolete Obsolete Obsolete Obsolete

Principais diferenciais

  • RQFP exposed-pad footprint (vs EPM7256SQC208-10)
  • 10 ns speed grade balance (vs EPM7256SQC208-7)
  • Commercial temperature grade (vs EPM7256SQI208-10)

Notas de projeto

Decouple every VCC pin of the EPM7256SRC208-10 with a 0.1 uF ceramic capacitor placed as close to the pin as possible, plus at least one 10 uF bulk capacitor per supply rail. The MAX 7000S family switches many outputs simultaneously, and inadequate decoupling causes ground bounce and false clocking. Estimated: with 164 I/O switching at 5 V into 50 pF loads at 50 MHz, transient supply current can exceed several hundred milliamps, so low-ESL ceramic capacitors and a solid ground plane are essential.

The 208-pin RQFP package has an exposed thermal pad that must be soldered to a copper area on the PCB. Estimated: at 5 V and 100 MHz with typical toggle rates, the device can dissipate 1-2 W; without a thermal pad connection the junction temperature may exceed the 0C to +70C commercial rating. Use a thermal via array under the pad and connect it to the ground plane. Confirm the actual power estimate with Intel's power calculator for the MAX 7000S family.

Route the JTAG signals (TCK, TMS, TDI, TDO) as short, controlled-impedance traces and keep them away from high-speed I/O to avoid corrupting in-system programming. Provide a 10-pin JTAG header with proper VCC and GND references. Because the EPM7256SRC208-10 is obsolete, also design a test point or header for the configuration file so that a replacement device can be reprogrammed in the field without desoldering.

Do not assume EPM7256SQC208-10 is a footprint drop-in for EPM7256SRC208-10. The SRC suffix denotes the 208-pin RQFP exposed-pad package while SQC denotes the 208-pin PQFP; the land patterns differ. Verify the package drawing before substituting. Also confirm the speed grade: a -15 part has 15 ns tPD versus 10 ns for the -10, which can break timing in existing designs.

Informações de conformidade

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Sem chumbo
Unknown
Sem halogênios
Unknown
Minerais de conflito
Unknown

Compliance data was not present in the verified web data for EPM7256SRC208-10. The lead-free (N) suffix variants such as EPM7256SQC208-7N and EPM7256SQC208-15N indicate lead-free construction, but the base part's RoHS/REACH status must be confirmed with the manufacturer or distributor.

Dados verificados em: 2026-09-13 — dados verificados e curados pela equipe de engenharia de componentes da XAIPART

Buscas relacionadas

EPM7256SRC208-10 EPM7256SRC208-10 datasheet Intel EPM7256SRC208-10 MAX 7000S CPLD 256 macrocell 208-pin RQFP CPLD EPM7256SRC208-10 PCI bus bridge EPM7256SRC208-10 vs EPM7256SQC208-10 EPM7256SRC208-10 drop-in replacement EPM7256SRC208-10 buy price what is the propagation delay of EPM7256SRC208-10 EPM7256SRC208-10 pinout RQFP obsolete CPLD replacement MAX 7000S

Componentes & termos relacionados

Intel Altera EPM7256SRC208-10 EPM7256SQC208-10 EPM7256SQC208-7 EPM7256SQI208-10 MAX 7000S CPLD Complex Programmable Logic Device programmable logic device macrocell logic array block RQFP PQFP 208-pin package surface mount JTAG IEEE 1149.1 in-system programmable EEPROM configuration propagation delay 5 V logic PCI bus obsolete
RFQ de cotação rápida
Preencha todos os detalhes — nossa equipe de vendas responderá em até 24 horas
Part number Fabricante Encapsulamento QTY Preço-alvo Total
Total: $0.00 USD
✓
Cotação enviada!

Responderemos seu e-mail em até 24 horas

1
RFQ enviada
2
Cotação recebida
3
Pedido realizado
4
Pagamento
5
Enviado
6
Entregue
Ver detalhes da RFQ