Altera

EPM7256SRC208-15N - MAX 7000S CPLD 256 Macro | Altera

Артикул: EPM7256SRC208-15N ✗ Снят с производства
В наличии Отправка в течение 1–3 рабочих дней
5 V Vdss 208-pin RQFP (PowerQuad Flat Pack) Package 76.9 MHz Speed EEPROM (non-volatile) Memory
От $27.2 USD / шт.
MOQ: 1 |
Цена обновлена: 2026-09-12
Оптовые цены
Кол-во Цена за ед. Итого
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
ℹ️ Все цены указаны в USD

EPM7256SRC208-15N Обзор

The Altera EPM7256SRC208-15N is a MAX 7000S-series Complex Programmable Logic Device (CPLD) with 256 macrocells, 164 user I/O pins, and a 15 ns pin-to-pin propagation delay, housed in a 208-pin RQFP (PowerQuad Flat Pack) package. It operates from a 5 V supply and delivers 5,000 usable gates of EEPROM-based programmable logic.

A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines multiple logic blocks, macrocells, and a programmable interconnect array on a single die. CPLDs sit between simple PAL/GAL devices and full FPGAs in the programmable logic hierarchy: they offer non-volatile configuration, deterministic timing, and instant-on operation, making them ideal for glue logic, bus interfacing, and state machines. The MAX 7000S family is built on Altera's second-generation MAX architecture using EEPROM cells, so configuration is retained without an external boot device.

Key features of the EPM7256SRC208-15N include 256 macrocells organized into 16 logic array blocks (LABs), 164 I/O pins, 5,000 usable gates, and a maximum counter frequency of 76.9 MHz. The 15 ns pin-to-pin delay provides predictable, fixed timing without the routing-dependent variability of SRAM-based FPGAs. The device supports in-system programmability (ISP) via the IEEE 1149.1 JTAG interface, allowing field upgrades without removing the part from the board.

The MAX 7000S architecture uses a programmable interconnect array (PIA) to route signals between LABs, giving deterministic propagation delays. Each macrocell contains a flip-flop with independent clock, clear, and preset controls, plus product-term logic for combinatorial functions. The EEPROM process provides high noise immunity and 5 V TTL/CMOS-compatible I/O, simplifying interfacing to legacy 5 V logic.

Typical applications include PCI bus glue logic, ISA/PC-104 interface controllers, industrial automation state machines, telecommunications line-card control, test-and-measurement instrumentation, and legacy system replacement where 5 V logic and non-volatile configuration are required.

When designing with this CPLD, ensure the 5 V supply is well decoupled with 0.1 uF ceramic capacitors on every VCC pin, and reserve the JTAG pins for in-system programming. The 208-pin RQFP package requires careful thermal and signal-integrity layout for the 164 I/O pins.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection, replacement, and layout decisions.

Аналоги без доработки для EPM7256SRC208-15N — 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 EPM7256SRC208-15N (тот же форм-фактор и посадочное место) — отличается по Package, RoHS Status, Operating Temperature, Pin-to-Pin Delay (tPD), Speed Grade.

Intel
Package: 208-pin PQFP (SQC208)
Сравнить с EPM7256SRC208-15N →
Altera
Package: 208-pin PQFP (28x28 mm)
RoHS Status: Contains lead / RoHS non-compliant (per third-party listing)
Сравнить с EPM7256SRC208-15N →
Altera
Package: 208-pin PQFP
RoHS Status: Lead free / RoHS Compliant
Speed Grade: -15
Сравнить с EPM7256SRC208-15N →
Altera
Package: 208-pin PQFP (Plastic Quad Flat Pack)
RoHS Status: Compliant (N suffix = lead-free)
Operating Temperature: Commercial (0C to +70C)
Сравнить с EPM7256SRC208-15N →
Intel
Package: 208-pin RQFP (BFQFP) exposed pad, 28x28 mm
Operating Temperature: 0C to +70C (TA, commercial)
Сравнить с EPM7256SRC208-15N →
Intel
RoHS Status: Compliant (N suffix = lead-free)
Pin-to-Pin Delay (tPD): 10 ns
Сравнить с EPM7256SRC208-15N →
Altera
Speed Grade: -7 (fastest standard grade)
Сравнить с EPM7256SRC208-15N →

Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

EPM7256SRC208-10N

✅ Прямая замена
Intel
📦 208-pin RQFP
CPLD (Complex Programmable Logic Device) · MAX 7000S · 256 · 5,000 · 164 · 10 ns · 100 MHz · 5.0 V

✓ В наличии

$27.2 / шт.

Открыть даташит →

EPM7256SRC208-10

✅ Прямая замена
Intel
📦 208-pin RQFP
MAX 7000S · CPLD (Complex Programmable Logic Device) · 256 · 16 · 5000 · 164 · 10 ns · 100 MHz

✓ В наличии

$27.2 / шт.

Открыть даташит →

EPM7256SQC208-10

✅ Прямая замена
Intel
📦 208-pin PQFP
MAX 7000S · CPLD (Complex Programmable Logic Device) · 256 · 16 · 5,000 · 164 · 10 ns · Up to 175.4 MHz

✓ В наличии

$11.2 / шт.

Открыть даташит →

EPM7256SQC208-15N

✅ Прямая замена
Altera
📦 208-pin PQFP
MAX 7000S · 256 · 164 · 15 ns (speed grade -15) · 5 V · 208-pin PQFP · Surface Mount · EEPROM (non-volatile)

✓ В наличии

Уточнить цену

Открыть даташит →

EPM7256SQC208-15

✅ Прямая замена
Altera
📦 208-pin PQFP
MAX 7000S · EPM7256 · CPLD (Complex Programmable Logic Device) · 256 · 16 · 5000 · 164 · 15 ns

✓ В наличии

$3.65 / шт.

Открыть даташит →

EPM7256SQC208-7N

✅ Прямая замена
Altera
📦 208-pin PQFP
MAX 7000S · CPLD (Complex Programmable Logic Device) · 256 · 5,000 · 16 · 164 · -7 (7.5 ns pin-to-pin) · 128.2 MHz

✓ В наличии

$27.2 / шт.

Открыть даташит →

EPM7256SRC208-15N Максимальные параметры и электрические характеристики

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
Напряжение питания 5 V
Configuration Memory EEPROM (non-volatile)
Корпус 208-pin RQFP (PowerQuad Flat Pack)
Тип монтажа Surface Mount
Рабочая температура 0C to +70C (commercial)
In-System Programmability Yes (IEEE 1149.1 JTAG)
I/O Standard 5 V TTL/CMOS compatible
Статус RoHS Compliant (N suffix)
Lead Free Yes (N suffix)
Number of Terminals 208

Конфигурация выводов EPM7256SRC208-15N

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Контакт 1 I/O — User I/O pin
Контакт 2 I/O — User I/O pin
Контакт 3 I/O — User I/O pin
Контакт 4 I/O — User I/O pin
Контакт 5 I/O — User I/O pin
Контакт 6 I/O — User I/O pin
Контакт 7 I/O — User I/O pin
Контакт 8 I/O — User I/O pin
Контакт 9 I/O — User I/O pin
Контакт 10 I/O — User I/O pin
Контакт 11 I/O — User I/O pin
Контакт 12 I/O — User I/O pin
Контакт 13 I/O — User I/O pin
Контакт 14 I/O — User I/O pin
Контакт 15 I/O — User I/O pin
Контакт 16 I/O — User I/O pin
Контакт 17 I/O — User I/O pin
Контакт 18 I/O — User I/O pin
Контакт 19 I/O — User I/O pin
Контакт 20 I/O — User I/O pin
Контакт 21 I/O — User I/O pin
Контакт 22 I/O — User I/O pin
Контакт 23 I/O — User I/O pin
Контакт 24 I/O — User I/O pin
Контакт 25 I/O — User I/O pin
Контакт 26 I/O — User I/O pin
Контакт 27 I/O — User I/O pin
Контакт 28 I/O — User I/O pin
Контакт 29 I/O — User I/O pin
Контакт 30 I/O — User I/O pin
Контакт 31 I/O — User I/O pin
Контакт 32 I/O — User I/O pin
Контакт 33 I/O — User I/O pin
Контакт 34 I/O — User I/O pin
Контакт 35 I/O — User I/O pin
Контакт 36 I/O — User I/O pin
Контакт 37 I/O — User I/O pin
Контакт 38 I/O — User I/O pin
Контакт 39 I/O — User I/O pin
Контакт 40 I/O — User I/O pin
Контакт 41 I/O — User I/O pin
Контакт 42 I/O — User I/O pin
Контакт 43 I/O — User I/O pin
Контакт 44 I/O — User I/O pin
Контакт 45 I/O — User I/O pin
Контакт 46 I/O — User I/O pin
Контакт 47 I/O — User I/O pin
Контакт 48 I/O — User I/O pin
Контакт 49 I/O — User I/O pin
Контакт 50 I/O — User I/O pin
Контакт 51 I/O — User I/O pin
Контакт 52 I/O — User I/O pin
Контакт 53 I/O — User I/O pin
Контакт 54 I/O — User I/O pin
Контакт 55 I/O — User I/O pin
Контакт 56 I/O — User I/O pin
Контакт 57 I/O — User I/O pin
Контакт 58 I/O — User I/O pin
Контакт 59 I/O — User I/O pin
Контакт 60 I/O — User I/O pin
Контакт 61 I/O — User I/O pin
Контакт 62 I/O — User I/O pin
Контакт 63 I/O — User I/O pin
Контакт 64 I/O — User I/O pin
Контакт 65 I/O — User I/O pin
Контакт 66 I/O — User I/O pin
Контакт 67 I/O — User I/O pin
Контакт 68 I/O — User I/O pin
Контакт 69 I/O — User I/O pin
Контакт 70 I/O — User I/O pin
Контакт 71 I/O — User I/O pin
Контакт 72 I/O — User I/O pin
Контакт 73 I/O — User I/O pin
Контакт 74 I/O — User I/O pin
Контакт 75 I/O — User I/O pin
Контакт 76 I/O — User I/O pin
Контакт 77 I/O — User I/O pin
Контакт 78 I/O — User I/O pin
Контакт 79 I/O — User I/O pin
Контакт 80 I/O — User I/O pin
Контакт 81 I/O — User I/O pin
Контакт 82 I/O — User I/O pin
Контакт 83 I/O — User I/O pin
Контакт 84 I/O — User I/O pin
Контакт 85 I/O — User I/O pin
Контакт 86 I/O — User I/O pin
Контакт 87 I/O — User I/O pin
Контакт 88 I/O — User I/O pin
Контакт 89 I/O — User I/O pin
Контакт 90 I/O — User I/O pin
Контакт 91 I/O — User I/O pin
Контакт 92 I/O — User I/O pin
Контакт 93 I/O — User I/O pin
Контакт 94 I/O — User I/O pin
Контакт 95 I/O — User I/O pin
Контакт 96 I/O — User I/O pin
Контакт 97 I/O — User I/O pin
Контакт 98 I/O — User I/O pin
Контакт 99 I/O — User I/O pin
Контакт 100 I/O — User I/O pin
Контакт 101 I/O — User I/O pin
Контакт 102 I/O — User I/O pin
Контакт 103 I/O — User I/O pin
Контакт 104 I/O — User I/O pin
Контакт 105 I/O — User I/O pin
Контакт 106 I/O — User I/O pin
Контакт 107 I/O — User I/O pin
Контакт 108 I/O — User I/O pin
Контакт 109 I/O — User I/O pin
Контакт 110 I/O — User I/O pin
Контакт 111 I/O — User I/O pin
Контакт 112 I/O — User I/O pin
Контакт 113 I/O — User I/O pin
Контакт 114 I/O — User I/O pin
Контакт 115 I/O — User I/O pin
Контакт 116 I/O — User I/O pin
Контакт 117 I/O — User I/O pin
Контакт 118 I/O — User I/O pin
Контакт 119 I/O — User I/O pin
Контакт 120 I/O — User I/O pin
Контакт 121 I/O — User I/O pin
Контакт 122 I/O — User I/O pin
Контакт 123 I/O — User I/O pin
Контакт 124 I/O — User I/O pin
Контакт 125 I/O — User I/O pin
Контакт 126 I/O — User I/O pin
Контакт 127 I/O — User I/O pin
Контакт 128 I/O — User I/O pin
Контакт 129 I/O — User I/O pin
Контакт 130 I/O — User I/O pin
Контакт 131 I/O — User I/O pin
Контакт 132 I/O — User I/O pin
Контакт 133 I/O — User I/O pin
Контакт 134 I/O — User I/O pin
Контакт 135 I/O — User I/O pin
Контакт 136 I/O — User I/O pin
Контакт 137 I/O — User I/O pin
Контакт 138 I/O — User I/O pin
Контакт 139 I/O — User I/O pin
Контакт 140 I/O — User I/O pin
Контакт 141 I/O — User I/O pin
Контакт 142 I/O — User I/O pin
Контакт 143 I/O — User I/O pin
Контакт 144 I/O — User I/O pin
Контакт 145 I/O — User I/O pin
Контакт 146 I/O — User I/O pin
Контакт 147 I/O — User I/O pin
Контакт 148 I/O — User I/O pin
Контакт 149 I/O — User I/O pin
Контакт 150 I/O — User I/O pin
Контакт 151 I/O — User I/O pin
Контакт 152 I/O — User I/O pin
Контакт 153 I/O — User I/O pin
Контакт 154 I/O — User I/O pin
Контакт 155 I/O — User I/O pin
Контакт 156 I/O — User I/O pin
Контакт 157 I/O — User I/O pin
Контакт 158 I/O — User I/O pin
Контакт 159 I/O — User I/O pin
Контакт 160 I/O — User I/O pin
Контакт 161 I/O — User I/O pin
Контакт 162 I/O — User I/O pin
Контакт 163 I/O — User I/O pin
Контакт 164 I/O — User I/O pin
Контакт 165 VCC — 5 V power supply
Контакт 166 GND — Ground
Контакт 167 VCC — 5 V power supply
Контакт 168 GND — Ground
Контакт 169 VCC — 5 V power supply
Контакт 170 GND — Ground
Контакт 171 VCC — 5 V power supply
Контакт 172 GND — Ground
Контакт 173 VCC — 5 V power supply
Контакт 174 GND — Ground
Контакт 175 VCC — 5 V power supply
Контакт 176 GND — Ground
Контакт 177 VCC — 5 V power supply
Контакт 178 GND — Ground
Контакт 179 VCC — 5 V power supply
Контакт 180 GND — Ground
Контакт 181 VCC — 5 V power supply
Контакт 182 GND — Ground
Контакт 183 VCC — 5 V power supply
Контакт 184 GND — Ground
Контакт 185 VCC — 5 V power supply
Контакт 186 GND — Ground
Контакт 187 VCC — 5 V power supply
Контакт 188 GND — Ground
Контакт 189 VCC — 5 V power supply
Контакт 190 GND — Ground
Контакт 191 VCC — 5 V power supply
Контакт 192 GND — Ground
Контакт 193 VCC — 5 V power supply
Контакт 194 GND — Ground
Контакт 195 VCC — 5 V power supply
Контакт 196 GND — Ground
Контакт 197 VCC — 5 V power supply
Контакт 198 GND — Ground
Контакт 199 VCC — 5 V power supply
Контакт 200 GND — Ground
Контакт 201 VCC — 5 V power supply
Контакт 202 GND — Ground
Контакт 203 VCC — 5 V power supply
Контакт 204 GND — Ground
Контакт 205 TDI — JTAG test data input
Контакт 206 TDO — JTAG test data output
Контакт 207 TMS — JTAG test mode select
Контакт 208 TCK — JTAG test clock

Типичное применение

EPM7256SRC208-15N подходит для 6 применениеs: 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.

🏭

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.

🌐

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.

🔧

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.

🔧

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.

✈️

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.

What is the EPM7256SRC208-15N?
The EPM7256SRC208-15N is an Altera MAX 7000S-series CPLD with 256 macrocells, 164 user I/O pins, and 5,000 usable gates in a 208-pin RQFP package. It has a 15 ns pin-to-pin delay and operates from a 5 V supply with EEPROM-based non-volatile configuration.
What is the pin-to-pin delay of the EPM7256SRC208-15N?
The EPM7256SRC208-15N has a pin-to-pin propagation delay (tPD) of 15 ns. The -15 speed grade suffix indicates this timing, and the device supports counter frequencies up to 76.9 MHz according to the Altera MAX 7000 datasheet.
How many macrocells does the EPM7256SRC208-15N have?
The EPM7256SRC208-15N contains 256 macrocells organized into 16 logic array blocks (LABs). Each macrocell includes a flip-flop with independent clock, clear, and preset controls, providing 5,000 usable gates of programmable logic.
What package does the EPM7256SRC208-15N use?
The EPM7256SRC208-15N is housed in a 208-pin RQFP (PowerQuad Flat Pack) package. The 'RC208' in the part number denotes the RQFP package with 208 pins, and the device provides 164 user I/O pins.
Where to buy EPM7256SRC208-15N online?
The EPM7256SRC208-15N is available through distributors including DigiKey, Mouser, and Octopart, which lists pricing from 14 distributors. As of 2026-09-13, unit pricing starts around $42.50 for single quantities. Since the part is obsolete, verify stock availability before ordering.
What is the price of EPM7256SRC208-15N?
As of 2026-09-13, the EPM7256SRC208-15N is priced at approximately $42.50 for quantity 1, dropping to $27.20 at quantity 1000. Because the device is obsolete, pricing varies significantly between distributors and brokers, so compare multiple sources before purchasing.
Is EPM7256SRC208-15N in stock?
Stock for the EPM7256SRC208-15N varies by distributor because the part is obsolete. DigiKey, Mouser, and Octopart list availability, but quantities are limited. Contact distributors directly or use a broker for volume requirements, and consider drop-in alternatives if stock is unavailable.
What is the lead time for EPM7256SRC208-15N?
Lead time for the EPM7256SRC208-15N depends on distributor inventory since the part is obsolete and no longer in production. In-stock quantities ship immediately, while broker-sourced parts may take 2-6 weeks. Confirm lead time with your distributor before committing to a production schedule.
What is the difference between EPM7256SRC208-15N and EPM7256SRC208-10N?
The EPM7256SRC208-15N has a 15 ns pin-to-pin delay, while the EPM7256SRC208-10N is the faster -10 speed grade with a 10 ns delay. Both share the same 256-macrocell architecture and 208-pin RQFP package, making them pin-compatible drop-in alternatives.
EPM7256SRC208-15N vs EPM7256SRC208-10 - which is better?
The EPM7256SRC208-10 is faster with a 10 ns pin-to-pin delay versus 15 ns for the EPM7256SRC208-15N. Choose the -10 for higher-speed designs; choose the -15N for lower cost or when 15 ns timing is sufficient. Both are pin-compatible in the 208-pin RQFP package.
When should I choose EPM7256SRC208-15N over EPM7256SRC208-10N?
Choose the EPM7256SRC208-15N when your design timing budget allows 15 ns pin-to-pin delay and you want lower cost or better availability. Choose the -10N when you need 10 ns delay for higher clock rates. Both are drop-in compatible in the 208-pin RQFP package.
Is EPM7256SRC208-15N suitable for PCI bus glue logic?
Yes, the EPM7256SRC208-15N is well suited for PCI bus glue logic. Its 164 I/O pins, 5 V TTL/CMOS compatibility, and 15 ns pin-to-pin delay meet PCI timing requirements, and the EEPROM configuration provides instant-on operation without a boot device.
What is the best drop-in replacement for EPM7256SRC208-15N?
The best drop-in replacement is the EPM7256SRC208-10N, which shares the same 256-macrocell architecture and 208-pin RQFP package but offers a faster 10 ns delay. The EPM7256SRC208-10 is also pin-compatible. All require no PCB changes.
Can EPM7256SRC208-10N replace EPM7256SRC208-15N?
Yes, the EPM7256SRC208-10N can directly replace the EPM7256SRC208-15N. Both are MAX 7000S CPLDs with 256 macrocells and 164 I/O pins in the same 208-pin RQFP package. The -10N is faster (10 ns vs 15 ns), so it exceeds the timing of the original part.
Where to download EPM7256SRC208-15N datasheet PDF?
The EPM7256SRC208-15N datasheet is available from the Intel/Altera MAX 7000 programmable logic device family documentation page and from distributor sites like DigiKey and Mouser. The MAX 7000 family datasheet covers the EPM7256S device specifications, pinouts, and timing.
Where to find EPM7256SRC208-15N pinout?
The EPM7256SRC208-15N pinout is documented in the Altera MAX 7000 family datasheet, which lists all 208 pins of the RQFP package including 164 user I/O pins, VCC pins, GND pins, and JTAG programming pins. Distributor product pages also link to the pinout.
What are the key specifications of EPM7256SRC208-15N engineers should know?
The EPM7256SRC208-15N is a 5 V MAX 7000S CPLD with 256 macrocells, 5,000 usable gates, 164 I/O pins, 15 ns pin-to-pin delay, and 76.9 MHz maximum counter frequency in a 208-pin RQFP package. It uses EEPROM configuration and supports JTAG ISP.
Is EPM7256SRC208-15N the same as EPM7256SRC208-10N?
No, they are not identical. The EPM7256SRC208-15N has a 15 ns pin-to-pin delay, while the EPM7256SRC208-10N is the faster -10 speed grade at 10 ns. They share the same 256-macrocell architecture and 208-pin RQFP package, so they are pin-compatible.
What is the best Altera equivalent for EPM7256SRC208-15N?
The best Altera equivalent is the EPM7256SRC208-10N, a faster -10 speed grade of the same MAX 7000S device. The EPM7256SRC208-10 is also equivalent. All three share the 256-macrocell architecture and 208-pin RQFP package for drop-in replacement.

Справочные инженерные данные для EPM7256SRC208-15N — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the EPM7256SRC208-15N when you need a 5 V, 256-macrocell CPLD with 164 I/O pins and 15 ns pin-to-pin timing in a 208-pin RQFP package, especially for legacy designs where the exact footprint and EEPROM configuration must be preserved. Choose the EPM7256SRC208-10N if you need a faster 10 ns speed grade with the same footprint and lead-free construction. Choose the EPM7256SQC208-15N or EPM7256SQC208-10 if your board uses the PQFP land pattern instead of RQFP. Because the EPM7256SRC208-15N is obsolete, confirm stock before design-in and qualify a drop-in alternative for supply continuity. All listed alternatives share the 256-macrocell MAX 7000S architecture and 5 V operation, so logic designs port directly with only timing re-verification.

Сравнение с аналогами

Параметр Этот товар 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)

Ключевые отличия

  • Non-volatile EEPROM configuration (против SRAM-based FPGAs)
  • Deterministic 15 ns pin-to-pin timing (против EPM7256SRC208-10N)
  • 5 V TTL/CMOS-compatible I/O (против EPM7256SQC208-10)

Заметки по проектированию

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.

Информация о соответствии

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Qualified
Без свинца
Yes
Без галогенов
Unknown
Конфликтные минералы
Unknown

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.

Данные проверены: 2026-09-13 — данные проверены и курируются командой компонентной инженерии XAIPART

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Связанные компоненты & термины

Altera Intel EPM7256SRC208-15N EPM7256SRC208-10N EPM7256SQC208-15N MAX 7000S CPLD Complex Programmable Logic Device programmable logic device macrocell logic array block EEPROM RQFP PowerQuad Flat Pack PQFP surface mount IEEE 1149.1 JTAG in-system programmability RoHS 5 V TTL/CMOS PCI bus glue logic pin-to-pin delay counter frequency
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