EPM7256SQC208-10 - MAX 7000S CPLD, 256 Macrocells, 10ns, 208-PQFP | Intel
MPN: EPM7256SQC208-10 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $24.8 | $248.00 |
| 100 | $18.95 | $1,895.00 |
| 500 | $14.5 | $7,250.00 |
| 1,000 | $11.2 | $11,200.00 |
Drop-in alternatives for EPM7256SQC208-10 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:
EPM7256AEQC208-10N
β Drop-Inπ Reference alternative (not in catalog)
EPM7256AQI208-10
β Drop-Inβ In Stock
$13.22 / Unit
View Datasheet βEPM7256AEQI208-7N
β Drop-Inβ In Stock
Contact for price
View Datasheet βEPM7256AEQC208-5N
β Drop-Inβ In Stock
$11.5 / Unit
View Datasheet βEPM7256BQC208-7
β Drop-Inβ In Stock
$9.75 / Unit
View Datasheet βEPM7256SQC208-10 Maximum Ratings & Electrical Characteristics
| Series | MAX 7000S |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 256 |
| Logic Array Blocks (LABs) | 16 |
| Usable Gates | 5,000 |
| Number of I/O Pins | 164 |
| Propagation Delay (tPD) | 10 ns |
| Counter Speed (fCNT) | Up to 175.4 MHz |
| Package | 208-pin PQFP (SQC208) |
| Mounting Type | Surface Mount |
| Programmable Technology | EEPROM (in-system programmable) |
| JTAG Support (IEEE 1149.1) | Yes |
| PCI Compliance | PCI Local Bus Specification 2.2 compliant |
| Operating Temperature | 0C to +70C (commercial) |
| MSL Level | 3 (168 hours) |
EPM7256SQC208-10 Pin Configuration
| Pin 1 | I/O β User I/O pin |
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| Pin 4 | I/O β User I/O pin |
| Pin 5 | I/O β User I/O pin |
| Pin 6 | I/O β User I/O pin |
| Pin 7 | VCC β 5V supply voltage |
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| Pin 11 | GND β Ground |
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| Pin 18 | I/O β User I/O pin |
| Pin 19 | TDI β JTAG Test Data In |
| Pin 20 | TMS β JTAG Test Mode Select |
| Pin 21 | TCK β JTAG Test Clock |
| Pin 22 | TDO β JTAG Test Data Out |
| Pin 23 | I/O β User I/O pin |
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| Pin 29 | VCC β 5V supply voltage |
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| Pin 35 | GND β Ground |
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| Pin 47 | VCC β 5V supply voltage |
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| Pin 53 | GND β Ground |
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| Pin 70 | I/O β User I/O pin |
| Pin 71 | VCC β 5V supply voltage |
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| Pin 74 | I/O β User I/O pin |
| Pin 75 | GND β Ground |
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| Pin 93 | VCC β 5V supply voltage |
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| Pin 96 | I/O β User I/O pin |
| Pin 97 | GND β Ground |
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| Pin 115 | VCC β 5V supply voltage |
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| Pin 119 | GND β Ground |
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| Pin 137 | VCC β 5V supply voltage |
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| Pin 141 | GND β Ground |
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| Pin 159 | VCC β 5V supply voltage |
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| Pin 163 | GND β Ground |
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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
EPM7256SQC208-10 is suitable for 6 applications: Telecommunications Glue Logic, Industrial Control Interface Bridging, PCI Bus Address Decoding and Arbitration, Embedded System Glue Logic, Legacy Logic Replacement and Board Modernization, State Machine and Control Logic.
Telecommunications Glue Logic
The EPM7256SQC208-10 excels in telecom glue logic where deterministic timing, instant-on operation, and high I/O density are required. Its 256 macrocells and 164 I/O easily replace dozens of SSI/MSI logic packages for backplane address decoding, bus arbitration, and protocol conversion in central-office line cards. The 10 ns tPD suits telecom backplanes running at frequencies up to 100 MHz, and the 5V core (standard grade) drives legacy backplane drivers directly. In-system programmability via JTAG enables field upgrades and design iteration without removing components.
Recommended
Industrial Control Interface Bridging
In factory automation, the EPM7256SQC208-10 bridges between legacy 5V PLCs, modern 3.3V microcontrollers, and fieldbus networks. Its 5V-tolerant I/O tolerates real-world industrial signal levels while the 256 macrocells implement multiple protocol converters (Modbus, Profibus, CAN glue logic) on one chip. Industrial-grade variants (EPM7256AQI208-10) extend the operating range to -40C to +85C for harsh factory floors. The EEPROM non-volatile storage means the device powers up instantly into a known-good state, critical for safety circuits.
Recommended
PCI Bus Address Decoding and Arbitration
The EPM7256SQC208-10 is explicitly PCI Local Bus Specification 2.2 compliant, making it ideal for motherboard address decoding, bus arbitration, and chip-select generation. The 164 I/O handle multiple PCI slots, and the 5 ns set-up time at 10 ns delay fits the 33 MHz PCI bus timing budget with margin. Replacing discrete 74F/74AS logic with this CPLD reduces board area, improves testability via JTAG, and provides a single component to modify when the address map changes.
Recommended
Embedded System Glue Logic
Embedded designs using microprocessors, DSPs, or FPGAs often need glue logic for chip-select generation, wait-state insertion, reset distribution, and interrupt prioritization. The EPM7256SQC208-10 absorbs all this glue into one non-volatile device, replacing 5-10 discrete logic ICs. Its 5,000 usable gates handle full address decoding for 32-bit microprocessors plus peripheral control, and JTAG ISP allows the same board to ship with different address maps by reprogramming the CPLD.
Recommended
Legacy Logic Replacement and Board Modernization
Many long-lifecycle products (military, aerospace, medical) cannot be redesigned, but their 74F/74AS logic is going obsolete. The EPM7256SQC208-10 implements the equivalent of 30-50 SSI/MSI packages in one chip, shrinking the BOM, reducing power, and adding testability. The 208-pin PQFP package accommodates designs with large I/O counts. Reprogramming the EEPROM allows engineering change orders (ECOs) without board respins.
Recommended
State Machine and Control Logic
Complex state machines, sequencers, and pulse-width modulators fit naturally in the 256 macrocells of the EPM7256SQC208-10. The 175.4 MHz counter speed enables precise timing generation, and the deterministic tPD of 10 ns gives predictable state-transition timing without FPGA synthesis uncertainty. The 164 I/O accommodate multiple encoder/decoder interfaces, and JTAG boundary-scan testing verifies connections on assembled boards before functional test.
Recommended
Recommended Products Summary
Engineering reference data for EPM7256SQC208-10 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM7256AEQC208-10N | EPM7256AQI208-10 | EPM7256AEQI208-7N | EPM7256AEQC208-5N | EPM7256BQC208-7 |
|---|---|---|---|---|---|---|
| Package | 208-pin PQFP (SQC208) | 208-pin PQFP (SQC208) - same | 208-pin PQFP (SQC208) - same | 208-pin PQFP (SQC208) - same | 208-pin PQFP (SQC208) - same | 208-pin PQFP (SQC208) - same |
| Brand | Intel | Intel | Intel | Intel | Intel | Intel |
| Series | MAX 7000S | MAX 7000S (AEC revision) | MAX 7000S | MAX 7000S (AEC revision) | MAX 7000S (AEC revision) | MAX 7000B |
| Macrocells | 256 | 256 | 256 | 256 | 256 | 256 |
| Propagation Delay (tPD) | 10 ns | 10 ns | 10 ns | 7 ns (faster) | 5 ns (fastest) | 7 ns |
| Temperature Grade | Commercial (0C to +70C) | Commercial | Industrial (-40C to +85C) | Industrial | Commercial | Commercial |
| Lead-Free / RoHS | No (original, non-N suffix) | Yes (N suffix) | No | Yes (N suffix) | Yes (N suffix) | No |
| User I/O Pins | 164 | 164 | 164 | 164 | 164 | 164 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Drop-in lead-free alternative with same die footprint (vs EPM7256AEQC208-10N)
- Industrial-temperature option available in same package (vs EPM7256AQI208-10)
- Faster speed-grade drop-ins available (vs EPM7256AEQI208-7N)
Design Notes
The EPM7256SQC208-10 is a 5V-core device on the standard (non-AEC) revision. Provide a clean 5V VCC rail and add 0.1uF ceramic decoupling capacitors near every VCC pin (pins 7, 29, 47, 71, 93, 115, 137, 159) plus a bulk 10uF tantalum or electrolytic cap near the device. The AEC revision (EPM7256AEQC208-10N) supports 3.3V core operation; do not swap a standard -10 with an AEC variant without verifying the I/O voltage compatibility.
Route JTAG signals (TDI, TMS, TCK, TDO on pins 19-22) away from high-speed clocks and switching signals to avoid programming interference. Use a 4-wire JTAG header on the board for in-system programming during development. Add 10k pull-ups on TMS and TDI to keep the JTAG state machine in a known state during power-up.
The PQFP-208 package has relatively long leads (compared to modern QFN/BGA). Limit clock edges to 10 ns or slower; for faster clocks use the -7 (7 ns) or -5 (5 ns) speed grade. Place the CPLD near the devices it interfaces with, and use short direct traces for high-speed signals (clocks, bus arbitration) to minimize reflections.
Do not confuse the original EPM7256SQC208-10 (non-RoHS, 5V core) with the lead-free EPM7256AEQC208-10N (3.3V core AEC revision). The 'AE' prefix indicates the Enhanced Core. Also, do not mix up MAX 7000S with MAX 7000B (e.g. EPM7256BQC208-7) - both share the same 208-PQFP footprint and macrocell count but have different architecture revisions and timing characteristics.
Compliance Information
The original EPM7256SQC208-10 is non-RoHS (no 'N' suffix). Choose EPM7256AEQC208-10N for RoHS/lead-free compliance. AEC-Q100 does not apply to commercial-grade MAX 7000S CPLDs; the AEC suffix indicates Altera Enhanced Core, not automotive qualification.
