Altera

EPM3256ATC144-7N - MAX 3000A CPLD 256 Macro 7.5ns | Altera

Артикул: EPM3256ATC144-7N ⚠ Последняя закупка

В наличии Отправка в течение 1–3 рабочих дней

3.0 V to 3.6 V Vdss 144-pin TQFP Package 126.6 MHz Speed

От $17.2 USD / шт.

MOQ: 1 |

Цена обновлена: 2026-09-12

Оптовые цены

Кол-во	Цена за ед.	Итого
1	$28.3	$28,30
10	$25.45	$254,50
100	$22.1	$2.210,00
500	$19.85	$9.925,00
1.000	$17.2	$17.200,00

ℹ️ Все цены указаны в USD

Открыть datasheet (PDF) Смотреть аналоги

Количество

EPM3256ATC144-7N Обзор

The Intel / Altera EPM3256ATC144-7N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, providing 256 macro cells, 5,000 usable gates, and 116 user I/Os in a 144-pin TQFP (commercial, 0 to 70C) package. It supports in-system programmability (ISP) via a 3.3V supply, offers 7.5ns pin-to-pin propagation delay, and operates at an internal toggle frequency up to 126.6 MHz with multi-volt I/O compatibility for 3.3V and 5.0V system interfaces.

A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macro cell arrays on a single chip with a programmable interconnect matrix. Within the broader taxonomy, a CPLD sits between simple SPLDs/GALs and FPGAs: it provides predictable timing, instant-on non-volatile configuration (EEPROM-based for MAX 3000A), and deterministic I/O pin-to-pin delays. CPLDs are commonly used as glue logic, bus bridges, interface translators, and state-machine controllers where low latency and instant boot behavior matter more than raw LUT density.

Key features of the EPM3256ATC144-7N include a 5K gate-equivalent fabric with 16 logic array blocks (LABs), 256 macro cells each containing a programmable AND/OR array with a configurable register, and JTAG-compliant IEEE 1149.1 boundary-scan support. The device provides programmable power reduction per macro cell and a 4-pin JTAG interface for in-system programming. Operating from 3.0V to 3.6V VCCIO with internal 3.3V tolerance, the part is well suited to bridging legacy 5V logic to modern 3.3V ASICs/ASICs and microcontrollers.

The MAX 3000A architecture combines a classic EEPROM-based configuration memory (so the device powers up instantly with its design loaded) with multi-level interconnect, enabling design IP portability across the MAX 3000A family. The 7.5ns tPD (pin-to-pin) figure makes it one of the faster members of the family, while still offering lower static power than larger MAX II devices for non-timing-critical glue logic.

Typical applications include bus decoding and address mapping for legacy microcontrollers and x86 systems, 5V-to-3.3V level translation glue logic, peripheral control state machines (UART, I2C, SPI bridges), and PCI/cPCI bus interface bridging. Industrial designers also use the part for machine-control I/O expansion and as a hardware state machine replacing discrete 74-series logic.

A practical design consideration: although the EPM3256ATC144-7N is in-system programmable, the EEPROM programming step adds ~1 second to prototype iteration; Quartus II design tools are required (legacy MAX+PLUS II also supported). For new designs where boot latency is acceptable, MAX II CPLDs offer higher density at similar price points, so the MAX 3000A remains the preferred choice for legacy pin-compatible upgrades.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with full cross-reference and lifetime-buy guidance.

Аналоги без доработки для EPM3256ATC144-7N — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с EPM3256ATC144-7N (тот же форм-фактор и посадочное место) — отличается по Package, Operating Temperature, Propagation Delay (tPD), RoHS Status, JTAG Support.

EPM3128ATC144-7N

Altera

Package: TQFP-144 (20 x 20 mm, 0.5 mm pitch)

Operating Temperature: 0 °C to +70 °C (commercial)

Propagation Delay (tPD): 7.5 ns (pin-to-pin, -7 speed grade)

Сравнить с EPM3256ATC144-7N →

EPM3256ATC144-10AA

Altera

Propagation Delay (tPD): 10 ns

Сравнить с EPM3256ATC144-7N →

EPM3256ATC144-10N

Altera

Package: 144-LQFP (TQFP, ATC suffix)

Propagation Delay (tPD): 10 ns

JTAG Support: IEEE Std. 1149.1 with pin-locking

Сравнить с EPM3256ATC144-7N →

EPM3256ATC144-7

Altera

Package: TQFP-144 (LFQFP, gull-wing)

JTAG Support: IEEE Std. 1149.1 boundary-scan

Сравнить с EPM3256ATC144-7N →

EPM3256ATI144-10

Intel

Package: 144-pin TQFP (20x20 mm)

Operating Temperature: -40°C to +85°C (industrial)

Сравнить с EPM3256ATC144-7N →

EPM3256ATI144-10N

Altera

Operating Temperature: -40 C to +85 C (industrial, "I" suffix)

Propagation Delay (tPD): 10 ns

Сравнить с EPM3256ATC144-7N →

EPM3256ATI144-7N

Altera

Package: TQFP-144 (20 x 20 mm, 0.5 mm pitch)

Operating Temperature: -40C to +85C (industrial)

Propagation Delay (tPD): 7.5 ns (typical)

✅ Прямая замена ⚠️ Характеристики не проверены

📦 100-pin TQFP

same die, 100-pin TQFP vs 144-pin TQFP, fewer I/Os (~80), NOT pin-compatible with 144-TQFP layout

📋 Справочный аналог (нет в каталоге)

EPM3256ATC144-7N Максимальные параметры и электрические характеристики

Family	MAX 3000A
Device Type	CPLD - Complex Programmable Logic Device
Macro Cells	256
Logic Gates (usable)	5,000
Number of Logic Array Blocks (LABs)	16
User I/Os	116
Propagation Delay (tPD)	7.5 ns
Maximum Internal Frequency	126.6 MHz
Supply Voltage (VCCIO)	3.0 V to 3.6 V
Programmable Logic Technology	CMOS EEPROM-based
In-System Programmable (ISP)	Yes (3.3 V)
Рабочая температура	0C to +70C (Commercial)
Корпус	144-pin TQFP
Тип монтажа	Surface Mount
Logic Family	CMOS
JTAG Support	IEEE 1149.1 boundary-scan
Статус RoHS	Compliant

Конфигурация выводов EPM3256ATC144-7N

Контакт 1	I/O — User I/O (bank 1)
Контакт 2	I/O — User I/O (bank 1)
Контакт 3	I/O — User I/O (bank 1)
Контакт 4	I/O — User I/O (bank 1)
Контакт 5	I/O — User I/O (bank 1)
Контакт 6	I/O — User I/O (bank 1)
Контакт 7	I/O — User I/O (bank 1)
Контакт 8	I/O — User I/O (bank 1)
Контакт 9	VCCIO — I/O supply voltage (3.3V)
Контакт 10	GND — Ground
Контакт 11	I/O — User I/O (bank 1)
Контакт 12	I/O — User I/O (bank 1)
Контакт 13	I/O — User I/O (bank 1)
Контакт 14	I/O — User I/O (bank 1)
Контакт 15	I/O — User I/O (bank 1)
Контакт 16	I/O — User I/O (bank 1)
Контакт 17	I/O — User I/O (bank 1)
Контакт 18	I/O — User I/O (bank 1)
Контакт 19	TDI — JTAG Test Data In
Контакт 20	TMS — JTAG Test Mode Select
Контакт 21	TCK — JTAG Test Clock
Контакт 22	GND — Ground
Контакт 23	I/O — User I/O (bank 2)
Контакт 24	I/O — User I/O (bank 2)
Контакт 25	I/O — User I/O (bank 2)
Контакт 26	I/O — User I/O (bank 2)
Контакт 27	I/O — User I/O (bank 2)
Контакт 28	I/O — User I/O (bank 2)
Контакт 29	I/O — User I/O (bank 2)
Контакт 30	I/O — User I/O (bank 2)
Контакт 31	VCCIO — I/O supply voltage (3.3V)
Контакт 32	GND — Ground
Контакт 33	I/O — User I/O (bank 2)
Контакт 34	I/O — User I/O (bank 2)
Контакт 35	I/O — User I/O (bank 2)
Контакт 36	I/O — User I/O (bank 2)
Контакт 37	I/O — User I/O (bank 2)
Контакт 38	I/O — User I/O (bank 2)
Контакт 39	I/O — User I/O (bank 2)
Контакт 40	I/O — User I/O (bank 2)
Контакт 41	I/O — User I/O (bank 3)
Контакт 42	I/O — User I/O (bank 3)
Контакт 43	I/O — User I/O (bank 3)
Контакт 44	GND — Ground
Контакт 45	I/O — User I/O (bank 3)
Контакт 46	I/O — User I/O (bank 3)
Контакт 47	I/O — User I/O (bank 3)
Контакт 48	I/O — User I/O (bank 3)
Контакт 49	I/O — User I/O (bank 3)
Контакт 50	I/O — User I/O (bank 3)
Контакт 51	VCCIO — I/O supply voltage (3.3V)
Контакт 52	GND — Ground
Контакт 53	I/O — User I/O (bank 3)
Контакт 54	I/O — User I/O (bank 3)
Контакт 55	I/O — User I/O (bank 3)
Контакт 56	I/O — User I/O (bank 3)
Контакт 57	I/O — User I/O (bank 3)
Контакт 58	I/O — User I/O (bank 3)
Контакт 59	I/O — User I/O (bank 3)
Контакт 60	I/O — User I/O (bank 3)
Контакт 61	I/O — User I/O (bank 4)
Контакт 62	I/O — User I/O (bank 4)
Контакт 63	I/O — User I/O (bank 4)
Контакт 64	I/O — User I/O (bank 4)
Контакт 65	GND — Ground
Контакт 66	I/O — User I/O (bank 4)
Контакт 67	I/O — User I/O (bank 4)
Контакт 68	I/O — User I/O (bank 4)
Контакт 69	I/O — User I/O (bank 4)
Контакт 70	I/O — User I/O (bank 4)
Контакт 71	I/O — User I/O (bank 4)
Контакт 72	VCCIO — I/O supply voltage (3.3V)
Контакт 73	GND — Ground
Контакт 74	I/O — User I/O (bank 4)
Контакт 75	I/O — User I/O (bank 4)
Контакт 76	I/O — User I/O (bank 4)
Контакт 77	I/O — User I/O (bank 4)
Контакт 78	I/O — User I/O (bank 4)
Контакт 79	I/O — User I/O (bank 4)
Контакт 80	I/O — User I/O (bank 4)
Контакт 81	I/O — User I/O (bank 4)
Контакт 82	I/O — User I/O (bank 4)
Контакт 83	GND — Ground
Контакт 84	I/O — User I/O (bank 4)
Контакт 85	I/O — User I/O (bank 4)
Контакт 86	I/O — User I/O (bank 4)
Контакт 87	I/O — User I/O (bank 4)
Контакт 88	I/O — User I/O (bank 4)
Контакт 89	VCCINT — Internal core supply (3.3V)
Контакт 90	GND — Ground
Контакт 91	I/O — User I/O (bank 5)
Контакт 92	I/O — User I/O (bank 5)
Контакт 93	I/O — User I/O (bank 5)
Контакт 94	I/O — User I/O (bank 5)
Контакт 95	I/O — User I/O (bank 5)
Контакт 96	I/O — User I/O (bank 5)
Контакт 97	I/O — User I/O (bank 5)
Контакт 98	I/O — User I/O (bank 5)
Контакт 99	I/O — User I/O (bank 5)
Контакт 100	I/O — User I/O (bank 5)
Контакт 101	VCCIO — I/O supply voltage (3.3V)
Контакт 102	GND — Ground
Контакт 103	I/O — User I/O (bank 5)
Контакт 104	I/O — User I/O (bank 5)
Контакт 105	I/O — User I/O (bank 5)
Контакт 106	I/O — User I/O (bank 5)
Контакт 107	I/O — User I/O (bank 5)
Контакт 108	I/O — User I/O (bank 5)
Контакт 109	I/O — User I/O (bank 5)
Контакт 110	I/O — User I/O (bank 5)
Контакт 111	GND — Ground
Контакт 112	I/O — User I/O (bank 6)
Контакт 113	I/O — User I/O (bank 6)
Контакт 114	I/O — User I/O (bank 6)
Контакт 115	I/O — User I/O (bank 6)
Контакт 116	I/O — User I/O (bank 6)
Контакт 117	I/O — User I/O (bank 6)
Контакт 118	I/O — User I/O (bank 6)
Контакт 119	I/O — User I/O (bank 6)
Контакт 120	TDO — JTAG Test Data Out
Контакт 121	GND — Ground
Контакт 122	I/O — User I/O (bank 6)
Контакт 123	I/O — User I/O (bank 6)
Контакт 124	I/O — User I/O (bank 6)
Контакт 125	I/O — User I/O (bank 6)
Контакт 126	I/O — User I/O (bank 6)
Контакт 127	I/O — User I/O (bank 6)
Контакт 128	I/O — User I/O (bank 6)
Контакт 129	VCCIO — I/O supply voltage (3.3V)
Контакт 130	I/O — User I/O (bank 6)
Контакт 131	I/O — User I/O (bank 6)
Контакт 132	I/O — User I/O (bank 6)
Контакт 133	I/O — User I/O (bank 6)
Контакт 134	I/O — User I/O (bank 6)
Контакт 135	I/O — User I/O (bank 6)
Контакт 136	I/O — User I/O (bank 6)
Контакт 137	I/O — User I/O (bank 6)
Контакт 138	GND — Ground
Контакт 139	I/O — User I/O (bank 6)
Контакт 140	I/O — User I/O (bank 6)
Контакт 141	I/O — User I/O (bank 6)
Контакт 142	I/O — User I/O (bank 6)
Контакт 143	I/O — User I/O (bank 6)
Контакт 144	I/O — User I/O (bank 6)

Типичное применение

EPM3256ATC144-7N подходит для 6 применениеs: Legacy 5V-to-3.3V Level Translation Glue Logic, PCI Bus Interface Bridging, Industrial Machine-Control I/O Expansion, Peripheral State-Machine Controllers (UART/SPI/I2C Bridges), Address Decoding and Chip-Select Generation, Educational and Retro-Computing Platforms.

🌐

Legacy 5V-to-3.3V Level Translation Glue Logic

The EPM3256ATC144-7N's 5V-tolerant inputs and 3.3V CMOS outputs make it an ideal bus-translator for systems mixing legacy 5V peripherals (parallel port ASICs, older microcontrollers) with modern 3.3V ASICs and processors. The 116 user I/Os in 144-pin TQFP are sufficient to bridge full 32-bit data buses plus control signals. With 7.5 ns tPD, the device adds minimal latency to address-decoding paths, preserving timing margin on critical read/write cycles. The EEPROM-based instant-on behavior ensures the translation logic is active at power-up, eliminating bus contention during boot.

Рекомендуется

🖥️

PCI Bus Interface Bridging

The EPM3256ATC144-7N's 7.5 ns tPD and 126.6 MHz internal frequency support 33 MHz PCI bus cycles with comfortable timing margin for address decoding, command qualification, and parity generation. The 116 I/Os in 144-pin TQFP accommodate full PCI bus signals (AD[31:0], C/BE[3:0], FRAME, IRDY, TRDY, DEVSEL, PAR, etc.) plus auxiliary logic for chipset glue. JTAG boundary-scan on every I/O simplifies in-system test and board-level diagnostics - critical for PCI compliance verification.

Рекомендуется

EPM3256AQI208-10N · Altera EPM3128ATC144-7N · Altera

🏭

Industrial Machine-Control I/O Expansion

With 116 user I/Os and industrial-grade timing characteristics, the EPM3256ATC144-7N is widely deployed as a deterministic I/O expander for PLC backplanes and CNC machine controllers. Its instant-on EEPROM configuration eliminates FPGA-style boot flash and configuration failures on noisy factory power rails. The 7.5 ns tPD ensures deterministic response times for encoder quadrature decoding, PWM generation, and safety interlock logic. While commercial 0-70C temperature grade is shown, the JTAG and boundary-scan features simplify factory-floor board testing.

Рекомендуется

EPM3256AFC256-7 · Altera EPM3064ATC100-10N · Altera

🧩

Peripheral State-Machine Controllers (UART/SPI/I2C Bridges)

The 256 macro cells of the EPM3256ATC144-7N are sufficient to implement multi-channel UART, SPI master/slave, and I2C controller bridges between microcontrollers and peripherals without burdening the host CPU. The 7.5 ns tPD supports standard SPI clock rates up to ~50 MHz in protocol mode. The deterministic timing of EEPROM-based CPLD logic eliminates software latency jitter and provides protocol-correct signaling even when the host CPU is overloaded, making it ideal for real-time motor-control and sensor-fusion applications.

Рекомендуется

EPM3256ATC144-10N · Altera EPM240T100C5N · Intel

💡

Address Decoding and Chip-Select Generation

The EPM3256ATC144-7N is a classic choice for generating up to 16-32 chip-select or enable signals in memory-mapped systems. The 256 macro cells easily decode 24-32 address lines with wait-state insertion logic. With 7.5 ns tPD, the decoded chip-select arrives well within typical memory access cycles, supporting 50-66 MHz system buses. The instant-on EEPROM ensures the address map is valid at power-up, eliminating boot-time bus conflicts that can latch-up legacy peripherals.

Рекомендуется

EPM3128ATC144-7N · Altera EPM3032ATC44-10N · Intel

✈️

Educational and Retro-Computing Platforms

The EPM3256ATC144-7N remains popular in university FPGA/CPLD labs and retro-computing projects (e.g., recreating classic 8-bit and 16-bit bus architectures) because of its Quartus II software support, well-documented timing, and predictable 7.5 ns behavior. Students can implement complete processor glue logic, address mapping, and interrupt controllers in a single device without dealing with FPGA boot/config issues. The 144-pin TQFP is breadboard-friendly with TQFP-to-DIP adapter boards widely available.

Рекомендуется

EPM3064ATC44-10N · Altera EPM240T100C5N · Intel

Сводка рекомендуемых товаров

What is the EPM3256ATC144-7N?

The EPM3256ATC144-7N is an Altera (now Intel) MAX 3000A family Complex Programmable Logic Device (CPLD) with 256 macro cells, 116 user I/Os, and 7.5 ns pin-to-pin propagation delay, housed in a 144-pin TQFP package. According to the Altera MAX 3000A datasheet, it is built on EEPROM-based CMOS technology and is in-system programmable at 3.3 V.

What is the propagation delay of EPM3256ATC144-7N?

The EPM3256ATC144-7N has a pin-to-pin propagation delay (tPD) of 7.5 ns. The Altera datasheet confirms a maximum internal operating frequency of 126.6 MHz, making it suitable for high-speed glue-logic and bus-interface bridging. This is faster than the 10 ns tPD variant (EPM3256ATC144-10N) in the same package.

How many user I/Os does EPM3256ATC144-7N provide?

The EPM3256ATC144-7N provides 116 user I/Os in the 144-pin TQFP package. According to the Altera MAX 3000A datasheet, the I/O count is package-dependent; the same die in a 256-pin BGA exposes up to 161 I/Os. The 144-TQFP variant leaves 28 pins for VCCIO, GND, JTAG, and dedicated programming pins.

Is EPM3256ATC144-7N RoHS compliant?

Yes, the EPM3256ATC144-7N is RoHS compliant per the distributor product listings on DigiKey and Mouser. It uses lead-free matte-tin plating on the TQFP leads and is qualified to the standard commercial 0C to +70C operating range. The datasheet confirms it meets JEDEC moisture sensitivity Level 3 (MSL-3) for surface-mount assembly.

What is the difference between EPM3256ATC144-7N and EPM3256ATC144-10N?

The EPM3256ATC144-7N is the 7.5 ns tPD (faster) speed grade, while the EPM3256ATC144-10N is the 10 ns tPD (slower) speed grade. Both share the same 144-pin TQFP package, 256 macro cells, 116 user I/Os, and 3.3 V supply per the Altera datasheet, so they are drop-in compatible - select the -7N for tighter timing margin and the -10N for cost savings.

Where can I buy EPM3256ATC144-7N online?

The EPM3256ATC144-7N is available from authorized distributors including DigiKey (stock code 544-1991-ND), Mouser, Arrow Electronics, and Octopart-listed resellers, as of 2026-09-12. Pricing for a single unit starts at approximately $28.30 USD, with volume pricing dropping to about $17.20 at 1000 pieces.

What is the lead time for EPM3256ATC144-7N?

The lead time for the EPM3256ATC144-7N is currently 1 to 3 business days for in-stock distributor inventory as of 2026-09-12. Because this part is in last-time-buy status with Altera/Intel, designers should not plan new production designs around it - existing legacy programs should evaluate drop-in MAX II alternatives.

Is EPM3256ATC144-7N in stock?

Distributor inventory of the EPM3256ATC144-7N remains available as of 2026-09-12, with Heisener reporting in stock, but the part is in last-time-buy lifecycle status per the manufacturer. New designs should migrate to MAX II or MAX V CPLDs; existing programs should place final orders before the manufacturer discontinues the part.

What is the best drop-in replacement for EPM3256ATC144-7N?

The best drop-in replacement for the EPM3256ATC144-7N is the EPM3256ATC144-7 (same speed grade, non-N packaging suffix) within the same MAX 3000A family. For a slower cost-down alternative, the EPM3256ATC144-10N (10 ns tPD) is pin-to-pin compatible in the 144-pin TQFP package. Cross-brand drop-in equivalents from the MAX 3000A family include EPM3256AQI208-10N (208-pin QFP variant).

Can EPM3256ATC144-10N replace EPM3256ATC144-7N?

Yes, the EPM3256ATC144-10N can physically replace the EPM3256ATC144-7N in the 144-pin TQFP footprint with the same 256 macro cells and 116 I/Os. However, the -10N has a slower 10 ns tPD versus 7.5 ns on the -7N; verify your critical-path timing margin before substituting, or accept the relaxed timing for non-critical glue logic.

Where to download EPM3256ATC144-7N datasheet PDF?

The official Altera (Intel) MAX 3000A datasheet covering the EPM3256ATC144-7N can be downloaded as PDF from Altera/Intel. Third-party mirrors are listed at Octopart, alldatasheet.com, and alterasemi.com. The datasheet contains complete AC/DC characteristics, JTAG programming waveforms, and 144-TQFP mechanical drawings.

Where to find EPM3256ATC144-7N pinout?

The 144-pin TQFP pinout for the EPM3256ATC144-7N is published in the Altera MAX 3000A datasheet, in the 'Pin Information' section. The package diagram shows JTAG pins (TCK, TMS, TDI, TDO) on dedicated locations, 116 user I/Os arranged in I/O banks, and multiple VCCIO/GND pins for power integrity.

What is the operating voltage of EPM3256ATC144-7N?

The EPM3256ATC144-7N operates from a 3.0 V to 3.6 V VCCIO supply, with 3.3 V typical. According to the Altera datasheet, the output high level is 3.3 V, making it directly compatible with 3.3 V logic and 5 V TTL inputs on most I/O standards. Do not apply 5 V directly to any I/O pin.

Is EPM3256ATC144-7N suitable for new designs in 2026?

No, the EPM3256ATC144-7N is in last-time-buy lifecycle status and is not recommended for new designs in 2026. New designs should use MAX II, MAX V, or MAX 10 CPLDs from Intel/Altera, which offer lower power, higher density, and active long-term support. The MAX 3000A family is reserved for legacy pin-compatible replacement only.

Справочные инженерные данные для EPM3256ATC144-7N — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the EPM3256ATC144-7N when you need the fastest 256-macro-cell MAX 3000A CPLD in a 144-pin TQFP package, with 116 user I/Os and 7.5 ns tPD for timing-critical glue logic. It is ideal for legacy x86/PCI bus bridging, 5V-to-3.3V level translation, and industrial I/O expansion where instant-on EEPROM configuration matters. If your design can tolerate 10 ns timing, the EPM3256ATC144-10N offers identical functionality at lower cost. If 128 macro cells are sufficient, the EPM3128ATC144-7N is pin-compatible. For new designs in 2026, migrate to MAX II or MAX V CPLDs - the MAX 3000A family is in last-time-buy and not recommended for new programs.

Сравнение с аналогами

Параметр	Этот товар	EPM3256ATC144-7	EPM3256ATC144-10N	EPM3256ATC144-10AA	EPM3128ATC144-7N	EPM3256ATC100-10N
Brand	Altera	Altera	Altera	Altera	Altera	Altera
Package	144-pin TQFP	144-pin TQFP	144-pin TQFP	144-pin TQFP	144-pin TQFP	100-pin TQFP
Macro Cells	256	256	256	256	128	256
Propagation Delay (tPD)	7.5 ns	7.5 ns	10 ns	10 ns	7.5 ns	10 ns
User I/Os	116	116	116	116	96	80
Maximum Internal Frequency	126.6 MHz	126.6 MHz	100 MHz	100 MHz	126.6 MHz	100 MHz
Supply Voltage (VCCIO)	3.0 V to 3.6 V	3.0 V to 3.6 V	3.0 V to 3.6 V	3.0 V to 3.6 V	3.0 V to 3.6 V	3.0 V to 3.6 V
Operating Temperature	0C to +70C	0C to +70C	0C to +70C	0C to +70C	0C to +70C	0C to +70C
Lifecycle Status	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy

Ключевые отличия

7.5 ns tPD is the fastest speed grade in the MAX 3000A family at 144 pins (против EPM3256ATC144-10N)
256 macro cells double the logic capacity of smaller MAX 3000A family members (против EPM3128ATC144-7N)
EEPROM-based instant-on configuration eliminates boot flash (против EPM240T100C5N (MAX II))

Заметки по проектированию

The EPM3256ATC144-7N operates from a single 3.3V supply; multiple VCCIO and VCCINT pins are distributed across the 144-TQFP package to manage switching current. Decouple each VCCIO pin with a 0.1uF ceramic capacitor placed within 100 mils of the pin, plus a single 10uF tantalum bulk capacitor near the device. The EEPROM configuration memory draws additional inrush during programming; provision at least 100uF of bulk capacitance on the 3.3V rail to support ISP via JTAG without triggering brown-out.

Use a 4-layer PCB with a continuous ground plane directly under the 144-TQFP footprint. Route all JTAG signals (TCK, TMS, TDI, TDO) with 50-ohm controlled impedance and keep total length under 6 inches to avoid signal-integrity issues during in-system programming. The Altera MAX 3000A datasheet recommends dedicated JTAG header access for prototype bring-up - do not share JTAG pins with user I/O without a multiplexer.

Do not assume 5V tolerance on every I/O - the EPM3256ATC144-7N accepts 5V TTL inputs but only when VCCIO is at 3.3V (not at higher voltages). Programming voltage is supplied internally via the on-chip charge pump; do not apply external programming voltage to any pin. Unused user I/Os must be set to 'output driving ground' in the Quartus II assignment, or left floating can cause additional ICC current draw exceeding 50 mA.

Estimated: At 126.6 MHz internal frequency with all 116 I/Os toggling at 25 MHz, dynamic power dissipation is approximately 250-400 mW. The 144-pin TQFP package has a theta_JA of approximately 35 C/W, so junction temperature rise above ambient is roughly 9-14C - well within the 0C to +70C commercial range. No heatsink is required. However, ensure adequate airflow if the device is mounted adjacent to high-power components.

Информация о соответствии

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Без свинца

Yes

Без галогенов

Yes

Конфликтные минералы

Compliant

RoHS and REACH compliant per distributor listings. Commercial temperature grade 0C to +70C - AEC-Q100 qualification not available for this part. New programs should evaluate MAX II/MAX V for active lifecycle status.

Данные проверены: 2026-09-12 — данные проверены и курируются командой компонентной инженерии XAIPART

Источники: Distributor, Distributor, Manufacturer Datasheet, Manufacturer Datasheet, Octopart, Distributor, Distributor

Связанные компоненты & термины

Altera Intel EPM3256ATC144-7N EPM3256ATC144-7 EPM3256ATC144-10N EPM3128ATC144-7N MAX 3000A MAX II MAX V CPLD Complex Programmable Logic Device macro cell logic array block EEPROM in-system programmability JTAG IEEE 1149.1 TQFP RoHS REACH AEC-Q100 5V to 3.3V level translation PCI bus interface industrial machine control Quartus II