EPM7256SRC208-15N - MAX 7000S CPLD 256 Macro | Altera
MPN: EPM7256SRC208-15N β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
Drop-in alternatives for EPM7256SRC208-15N β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
EPM7256SRC208-10N
β Drop-Inβ In Stock
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View Datasheet βEPM7256SRC208-10
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View Datasheet βEPM7256SQC208-10
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View Datasheet βEPM7256SQC208-15N
β Drop-Inβ In Stock
Contact for price
View Datasheet βEPM7256SQC208-15
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View Datasheet βEPM7256SQC208-7N
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View Datasheet βEPM7256SRC208-15N Maximum Ratings & Electrical Characteristics
| Series | MAX 7000S |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| User I/O Pins | 164 |
| Logic Array Blocks (LABs) | 16 |
| Pin-to-Pin Delay (tPD) | 15 ns |
| Maximum Counter Frequency | 76.9 MHz |
| Supply Voltage | 5 V |
| Configuration Memory | EEPROM (non-volatile) |
| Package | 208-pin RQFP (PowerQuad Flat Pack) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0C to +70C (commercial) |
| In-System Programmability | Yes (IEEE 1149.1 JTAG) |
| I/O Standard | 5 V TTL/CMOS compatible |
| RoHS Status | Compliant (N suffix) |
| Lead Free | Yes (N suffix) |
| Number of Terminals | 208 |
EPM7256SRC208-15N Pin Configuration
| Pin 1 | I/O β User I/O pin |
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| Pin 164 | I/O β User I/O pin |
| Pin 165 | VCC β 5 V power supply |
| Pin 166 | GND β Ground |
| Pin 167 | VCC β 5 V power supply |
| Pin 168 | GND β Ground |
| Pin 169 | VCC β 5 V power supply |
| Pin 170 | GND β Ground |
| Pin 171 | VCC β 5 V power supply |
| Pin 172 | GND β Ground |
| Pin 173 | VCC β 5 V power supply |
| Pin 174 | GND β Ground |
| Pin 175 | VCC β 5 V power supply |
| Pin 176 | GND β Ground |
| Pin 177 | VCC β 5 V power supply |
| Pin 178 | GND β Ground |
| Pin 179 | VCC β 5 V power supply |
| Pin 180 | GND β Ground |
| Pin 181 | VCC β 5 V power supply |
| Pin 182 | GND β Ground |
| Pin 183 | VCC β 5 V power supply |
| Pin 184 | GND β Ground |
| Pin 185 | VCC β 5 V power supply |
| Pin 186 | GND β Ground |
| Pin 187 | VCC β 5 V power supply |
| Pin 188 | GND β Ground |
| Pin 189 | VCC β 5 V power supply |
| Pin 190 | GND β Ground |
| Pin 191 | VCC β 5 V power supply |
| Pin 192 | GND β Ground |
| Pin 193 | VCC β 5 V power supply |
| Pin 194 | GND β Ground |
| Pin 195 | VCC β 5 V power supply |
| Pin 196 | GND β Ground |
| Pin 197 | VCC β 5 V power supply |
| Pin 198 | GND β Ground |
| Pin 199 | VCC β 5 V power supply |
| Pin 200 | GND β Ground |
| Pin 201 | VCC β 5 V power supply |
| Pin 202 | GND β Ground |
| Pin 203 | VCC β 5 V power supply |
| Pin 204 | GND β Ground |
| Pin 205 | TDI β JTAG test data input |
| Pin 206 | TDO β JTAG test data output |
| Pin 207 | TMS β JTAG test mode select |
| Pin 208 | TCK β JTAG test clock |
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
EPM7256SRC208-15N is suitable for 6 applications: PCI Bus Glue Logic, Industrial Automation State Machine, Telecommunications Line-Card Control, Test and Measurement Instrumentation, Legacy System Replacement and Repair, Military and Aerospace Avionics Control.
PCI Bus Glue Logic
The EPM7256SRC208-15N fits PCI bus glue logic because its 164 user I/O pins and 15 ns pin-to-pin delay meet the 33 MHz PCI timing budget, while the 5 V TTL/CMOS-compatible I/O interfaces directly to legacy PCI controllers without level shifters. The device implements address decoding, wait-state generation, and interrupt steering between a host bridge and peripheral devices. Placed between the PCI bus and peripheral ASICs, it replaces dozens of discrete 74-series logic gates, reducing board area and power. Unlike SRAM-based FPGAs, the EEPROM configuration is instant-on, so the CPLD is active before the host processor boots, which is essential for PCI configuration cycles. The 256 macrocells provide ample product-term logic for complex decode functions, and JTAG ISP allows field firmware updates without removing the part.
Recommended
Industrial Automation State Machine
The EPM7256SRC208-15N is well suited to industrial automation state machines because its 256 macrocells and 76.9 MHz counter frequency handle multi-state control logic with deterministic 15 ns timing, and the 5 V I/O interfaces directly to industrial sensors and relay drivers. The CPLD implements sequence control, encoder decoding, and safety interlock logic on a factory floor controller. Its EEPROM configuration retains the state machine definition through power cycles without a battery or boot PROM, which is critical in harsh industrial environments where instant-on recovery is required. The 164 I/O pins allow direct connection to limit switches, pneumatic valves, and motor contactors. Unlike a microcontroller, the CPLD executes all logic in parallel, giving fixed-latency response independent of program flow, which simplifies worst-case timing analysis for safety functions.
Recommended
Telecommunications Line-Card Control
The EPM7256SRC208-15N serves telecommunications line-card control because its 164 I/O pins and 256 macrocells manage TDM framing, timeslot assignment, and alarm monitoring across multiple line interfaces, while the 15 ns pin-to-pin delay supports the tight timing of E1/T1 and SONET overhead processing. The CPLD sits between line interface units and a backplane controller, implementing glue logic that would otherwise require multiple discrete devices. The 5 V supply and TTL-compatible I/O match legacy telecom backplane signaling, and the non-volatile EEPROM configuration ensures the line card is operational immediately after hot-swap insertion, avoiding the configuration latency of SRAM FPGAs. The 76.9 MHz counter frequency provides headroom for clock division and pulse generation. JTAG ISP enables remote firmware upgrades through the backplane, reducing field service costs.
Recommended
Test and Measurement Instrumentation
The EPM7256SRC208-15N is used in test and measurement instrumentation because its deterministic 15 ns pin-to-pin delay and 76.9 MHz counter frequency enable precise trigger generation, event counting, and timing control in oscilloscopes, logic analyzers, and automated test equipment. The 256 macrocells implement pattern generators, state sequencers, and bus capture logic, while the 164 I/O pins interface to measurement front-ends and host processors. The 5 V TTL/CMOS I/O matches the signaling of legacy instrument buses such as GPIB and VME. Because the EEPROM configuration is non-volatile, the instrument boots instantly without a configuration PROM, which is important for benchtop equipment that must be ready immediately. The CPLD's parallel architecture guarantees fixed-latency response, simplifying calibration and repeatability analysis in precision measurement applications.
Recommended
Legacy System Replacement and Repair
The EPM7256SRC208-15N is a key part for legacy system replacement and repair because it is an obsolete MAX 7000S CPLD still required to maintain 5 V designs in service. Its 208-pin RQFP package and 164 I/O pins match the original footprint, so a failed device can be replaced without PCB redesign. The EEPROM configuration preserves the original logic design, and JTAG ISP allows reprogramming from an existing JEDEC file. Engineers maintaining industrial controllers, medical equipment, and aerospace systems rely on this part to extend product life cycles. Because the device is obsolete, drop-in alternatives such as the EPM7256SRC208-10N and EPM7256SQC208-15N provide second-source options. The 5 V supply and TTL-compatible I/O ensure compatibility with surrounding legacy logic.
Recommended
Military and Aerospace Avionics Control
The EPM7256SRC208-15N is used in military and aerospace avionics control because its non-volatile EEPROM configuration provides instant-on operation and immunity to radiation-induced configuration loss that affects SRAM FPGAs. The 256 macrocells implement flight-control sequencing, actuator interface logic, and sensor data routing, while the 164 I/O pins connect to avionics buses and discrete I/O. The 15 ns pin-to-pin delay gives deterministic timing for safety-critical functions, and the 5 V TTL/CMOS I/O matches legacy avionics signaling. The 208-pin RQFP package is available in commercial temperature grades; extended-temperature variants should be selected for avionics use. Because the part is obsolete, designers should qualify drop-in alternatives such as the EPM7256SRC208-10N to ensure long-term supply for avionics programs.
Recommended
Recommended Products Summary
Engineering reference data for EPM7256SRC208-15N β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM7256SRC208-10N | EPM7256SRC208-10 | EPM7256SQC208-10 | EPM7256SQC208-15N |
|---|---|---|---|---|---|
| Package | 208-pin RQFP | 208-pin RQFP - same | 208-pin RQFP - same | 208-pin PQFP | 208-pin PQFP |
| Brand | Altera | Altera | Altera | Altera | Altera |
| Pin-to-Pin Delay (tPD) | 15 ns | 10 ns | 10 ns | 10 ns | 15 ns |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| User I/O Pins | 164 | 164 | 164 | 164 | 164 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Max Counter Frequency | 76.9 MHz | 100 MHz | 100 MHz | 100 MHz | 76.9 MHz |
| Lead Free | Yes (N suffix) | Yes (N suffix) | No | No | Yes (N suffix) |
| Configuration Memory | EEPROM (non-volatile) | EEPROM (non-volatile) | EEPROM (non-volatile) | EEPROM (non-volatile) | EEPROM (non-volatile) |
| JTAG ISP | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) |
Key Differentiators
- Non-volatile EEPROM configuration (vs SRAM-based FPGAs)
- Deterministic 15 ns pin-to-pin timing (vs EPM7256SRC208-10N)
- 5 V TTL/CMOS-compatible I/O (vs EPM7256SQC208-10)
Design Notes
Decouple every VCC pin of the EPM7256SRC208-15N with a 0.1 uF ceramic capacitor placed as close to the pin as possible, plus at least one 10 uF bulk capacitor per power plane. The MAX 7000S device draws transient current during logic switching, and inadequate decoupling causes ground bounce and false switching on the 164 I/O pins. Use a low-inductance ground plane and keep the decoupling loop area minimal.
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. Terminate TCK with a series resistor if reflections occur. Reserve a 10-pin JTAG header on the board so the EEPROM configuration can be updated in the field without removing the 208-pin RQFP package.
The EPM7256SRC208-15N is obsolete, so verify distributor stock before committing to production. Do not substitute a different package (for example PQFP for RQFP) without confirming the land pattern, because the RQFP and PQFP footprints are not identical. When migrating to the EPM7256SRC208-10N, re-run static timing analysis because the faster speed grade changes setup and hold margins.
Compliance Information
The N suffix indicates lead-free/RoHS-compliant construction. REACH, halogen-free, and conflict-minerals status were not stated in the provided data and are marked unknown.
