EPM7256SQC208-7N - MAX 7000S CPLD 256 Macrocell | Altera
MPN: EPM7256SQC208-7N ✗ 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 EPM7256SQC208-7N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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EPM7256SQC208-10N
✅ Drop-In📋 Reference alternative (not in catalog)
EPM7256SQC208-15N
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →EPM7256SQC208-7
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View Datasheet →EPM7256AEQC208-7N
✅ Drop-In📋 Reference alternative (not in catalog)
EPM7256SQC208-10
✅ Drop-In✓ In Stock
$11.2 / Unit
View Datasheet →EPM7256SQC208-15
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$3.65 / Unit
View Datasheet →EPM7256SQC208-7N Maximum Ratings & Electrical Characteristics
| Family | MAX 7000S |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| Logic Array Blocks (LABs) | 16 |
| User I/O Pins | 164 |
| Speed Grade | -7 (7.5 ns pin-to-pin) |
| Maximum Frequency | 128.2 MHz |
| Supply Voltage (VCC) | 5 V |
| Technology | CMOS EEPROM |
| Configuration Memory | Non-volatile EEPROM (no external config needed) |
| Package | 208-pin PQFP (Plastic Quad Flat Pack) |
| Mounting Type | Surface Mount |
| Operating Temperature | Commercial (0C to +70C) |
| JTAG Interface | IEEE 1149.1 boundary-scan (ISP capable) |
| Minimum DC Input Voltage | -0.5 V |
| Input Undershoot Tolerance | -2.0 V for <100 mA, <20 ns |
| RoHS Status | Compliant (N suffix = lead-free) |
| Pin-to-Pin Delay (tPD) | 7.5 ns |
| Open-Drain Output | Optional per I/O pin |
EPM7256SQC208-7N 208-pin pqfp (plastic quad flat pack) Pin Configuration Guide
Complete pinout information for EPM7256SQC208-7N (208-pin pqfp (plastic quad flat pack) package) with 164 pins. This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EPM7256SQC208-7N.
Refer to the datasheet for full pin configuration.
Estimated pin count: 164 pins (digital package)
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
EPM7256SQC208-7N is suitable for 6 applications: PCI Bus Interfacing, Industrial Control State Machines, Telecommunications Line Card Control, DSP and Processor Peripheral Expansion, Legacy System Glue Logic Replacement, Test and Measurement Instrumentation.
PCI Bus Interfacing
The EPM7256SQC208-7N is well suited for PCI bus interfacing because its 7.5 ns pin-to-pin delay and 128.2 MHz maximum frequency satisfy PCI 2.2 timing requirements, while its 164 user I/O pins accommodate a 32-bit address/data bus plus control signals. The device implements bus arbitration, address decoding, and target/initiator state machines in a single non-volatile CPLD. Placed between the PCI connector and the host processor, it eliminates discrete glue logic and reduces board area. Unlike SRAM-based FPGAs, the EEPROM configuration is instant-on, so the PCI interface is ready at power-up without a configuration load cycle. The 5 V supply matches legacy PCI signaling, and JTAG ISP allows field firmware updates.
Recommended
Industrial Control State Machines
In industrial automation, the EPM7256SQC208-7N implements deterministic state machines for PLCs, motor controllers, and safety interlocks. Its 256 macrocells provide enough registers for multi-state sequencing, while the 7.5 ns propagation delay ensures predictable response to sensor inputs. The non-volatile EEPROM configuration means the controller boots instantly after power loss - critical for factory floors where restart latency is unacceptable. The 5 V I/O interfaces directly with legacy 5 V sensors and actuators without level shifters. With 164 I/O pins, a single device can handle multiple axes of motion control plus safety monitoring. The commercial temperature range suits controlled-cabinet environments; for wider temperature, consider the industrial-grade variant.
Recommended
Telecommunications Line Card Control
The EPM7256SQC208-7N serves as a control-plane CPLD on telecommunications line cards, managing TDM framing, clock switching, and alarm monitoring. Its 128.2 MHz maximum frequency supports high-speed serial backplane interfaces, and the 164 I/O pins connect to framers, line interface units, and the host bus. The deterministic timing of a CPLD - unlike an FPGA with variable routing delays - simplifies worst-case timing analysis for telecom equipment. The EEPROM configuration survives power cycling, so line cards resume operation immediately after a reset. The 5 V supply is compatible with legacy telecom backplanes, and JTAG ISP enables remote firmware upgrades through the backplane. Open-drain outputs allow wired-OR interrupt signaling across multiple cards.
Recommended
DSP and Processor Peripheral Expansion
The EPM7256SQC208-7N expands DSP and microcontroller peripherals by implementing custom address decoding, wait-state generation, and DMA handshaking. With 256 macrocells, it can host multiple peripheral controllers - UARTs, timers, GPIO expanders - in a single device, reducing chip count. The 7.5 ns pin-to-pin delay keeps peripheral access latency low, and the 164 I/O pins match wide processor buses. Because the configuration is non-volatile, the expansion logic is available immediately at power-up, before the processor finishes booting. The 5 V I/O interfaces directly with legacy DSPs such as the TMS320C5x family. JTAG ISP allows peripheral logic updates without board rework, extending product lifetime.
Recommended
Legacy System Glue Logic Replacement
The EPM7256SQC208-7N consolidates dozens of 74-series TTL glue logic packages into one CPLD, shrinking board area and improving reliability. Its 5 V supply and 5 V tolerant I/O directly replace legacy TTL without level shifting, and the 7.5 ns delay matches or exceeds discrete logic speed. The 256 macrocells absorb address decoders, bus transceivers, clock dividers, and reset logic. Because the EEPROM configuration is non-volatile, the replacement behaves like fixed logic - no boot delay, no configuration PROM. This makes the EPM7256SQC208-7N ideal for sustaining legacy industrial, medical, and aerospace systems where redesign is impractical. JTAG ISP allows logic fixes in the field, and the 208-pin PQFP footprint matches existing sockets.
Recommended
Test and Measurement Instrumentation
The EPM7256SQC208-7N provides timing and control logic in test and measurement instruments such as logic analyzers, pattern generators, and ATE systems. Its 128.2 MHz maximum frequency supports high-speed data capture, while the 164 I/O pins interface with wide data buses and trigger matrices. The deterministic 7.5 ns propagation delay ensures repeatable trigger timing - essential for measurement accuracy. The non-volatile EEPROM configuration means the instrument is operational immediately at power-up, with no FPGA configuration delay. The 5 V supply matches legacy instrument backplanes, and JTAG ISP allows calibration logic updates. Open-drain outputs enable wired-OR trigger buses across multiple instrument modules.
Recommended
Recommended Products Summary
Engineering reference data for EPM7256SQC208-7N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM7256SQC208-10N | EPM7256SQC208-15N | EPM7256SQC208-7 | EPM7256AEQC208-7N |
|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Brand | Altera | Altera | Altera | Altera | Altera |
| Speed Grade | -7 (7.5 ns) | -10 (10 ns) | -15 (15 ns) | -7 (7.5 ns) | -7 (7.5 ns) |
| Maximum Frequency | 128.2 MHz | [DATA_NEEDED] | [DATA_NEEDED] | 128.2 MHz | [DATA_NEEDED] |
| 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 |
| RoHS | Compliant (N suffix) | Compliant (N suffix) | Compliant (N suffix) | Non-compliant (no N suffix) | Compliant (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
- Fastest speed grade in MAX 7000S family (vs EPM7256SQC208-10N)
- Non-volatile EEPROM configuration (vs EPM7256AEQC208-7N)
- RoHS-compliant lead-free package (vs EPM7256SQC208-7)
- 164 user I/O in 208-pin PQFP (vs EPM7256SQC208-15N)
Design Notes
Decouple every VCC pin with a 0.1 uF ceramic capacitor placed as close to the pin as possible, plus at least one 10 uF bulk capacitor per device. The MAX 7000S family draws significant transient current during logic switching; inadequate decoupling causes ground bounce and false switching at 128 MHz. Estimated: at 5 V and 100 mA typical ICC, total power dissipation is approximately 0.5 W, but peak switching currents can be several times higher. Use a low-inductance ground plane and avoid daisy-chaining power traces between VCC pins.
The 208-pin PQFP requires careful PCB layout for signal integrity. Route high-speed signals (clock, JTAG TCK) on controlled-impedance traces and keep them away from I/O switching nodes. Provide a solid ground plane under the device and use thermal relief on the exposed pad if present. For the 128.2 MHz maximum frequency, keep trace lengths matched for bus signals and terminate long nets. Place the JTAG header close to the device to minimize TCK/TMS stub length, which improves ISP reliability.
Do not exceed the minimum DC input voltage of -0.5 V. During transitions, inputs may undershoot to -2.0 V for input currents less than 100 mA and periods shorter than 20 ns; beyond this, latch-up or damage can occur. For EPM7128A and EPM7256A devices only, VCC must rise monotonically - a non-monotonic ramp can corrupt EEPROM configuration. Always verify that the -7 speed grade timing is met after any logic change; the 7.5 ns pin-to-pin delay leaves little margin for added routing delays.
Compliance Information
The N suffix indicates RoHS-compliant lead-free construction. REACH, halogen-free, and conflict-minerals status were not stated in the provided data and are marked unknown. Not AEC-Q100 qualified (commercial temperature grade).
