Altera

EPM7256AEQC208-5N - MAX 7000A CPLD, 256 Macro, 5ns | Intel

MPN: EPM7256AEQC208-5N ✗ Cuối đời

3.3 V Vdss 208-pin PQFP (Plastic Quad Flat Pack) Package 172.4 MHz Speed

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MOQ: 1 |

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EPM7256AEQC208-5N Tóm tắt

The Intel (formerly Altera) EPM7256AEQC208-5N is a high-density CMOS Complex Programmable Logic Device (CPLD) from the MAX 7000A family, delivering 5,000 usable gates, 256 macrocells, and 164 user I/Os in a 208-pin PQFP package with -5 speed grade (5.5 ns pin-to-pin propagation delay). It operates from a 3.3 V core supply and supports in-system programmability via the IEEE Std. 1149.1 (JTAG) interface.

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.

Bộ thay thế dễ dàng lắp đặt cho EPM7256AEQC208-5N — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.

Các biến thể trong loạt này

Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPM7256AEQC208-5N (cùng hình factor và footprint) — khác nhau ở Package, Maximum Internal Frequency, Operating Temperature, Pin-to-Pin Propagation Delay (tPD), RoHS Status.

EPM7256AEQI208-7N

Altera

Package: 208-pin PQFP (FQFP)

Maximum Internal Frequency: 126.6 MHz

Pin-to-Pin Propagation Delay (tPD): 7.5 ns