Altera

EPF10K50SQC208-2 - FLEX 10KS FPGA 50K Gates 208-PQFP | Altera

Артикул: EPF10K50SQC208-2 ✗ Снят с производства
В наличии Отправка в течение 1–3 рабочих дней
2.375 V to 2.625 V (nominal 2.5 V) Vdss 208-BFQFP / 208-PQFP, 28 x 28 mm, gull-wing Package -2 Speed 40,960 bits (40 Kbit) Memory
От $64.2 USD / шт.
MOQ: 1 |
Цена обновлена: 2026-09-11
Оптовые цены
Кол-во Цена за ед. Итого
1 $145 $145,00
10 $128 $1.280,00
100 $96.5 $9.650,00
500 $78.4 $39.200,00
1.000 $64.2 $64.200,00
ℹ️ Все цены указаны в USD

EPF10K50SQC208-2 Обзор

The Intel (Altera) EPF10K50SQC208-2 is a member of the FLEX 10KS family of Field-Programmable Gate Arrays, delivering 50,000 typical gates, 2,880 logic cells (4,096 flipflops/registers) and 360 logic array blocks (LABs) in a 208-pin Plastic Quad Flat Pack (208-BFQFP/PQFP, 28x28 mm) gull-wing surface-mount package. It supports 147 user I/Os, runs from a 2.375 V to 2.625 V core supply on a 0.22 µm CMOS SRAM process, and is offered in a commercial 0 °C to 70 °C temperature grade with -2 speed grade. The device is built on a reconfigurable SRAM architecture with embedded array blocks (EABs) that allow on-chip implementation of RAM, ROM, FIFO, and multiplier functions, making it suitable for System-on-a-Programmable-Chip (SOPC) designs.

A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines configurable logic blocks, programmable interconnect, and programmable I/O cells on a single semiconductor die. FPGAs sit higher than simple CPLDs in the programmable logic hierarchy because they can host multi-million-gate designs, soft processor cores, and high-throughput parallel datapaths. Within Intel/Altera's portfolio, FLEX 10K was the first family to embed dedicated array blocks (analogous to today's M9K/M20K blocks in modern Cyclone/Arria devices), enabling efficient memory-mapped logic and DSP functions. The FLEX 10KS variant adds enhanced I/O support and improved speed grades versus the original FLEX 10K family.

Key features of the EPF10K50SQC208-2 include 50K typical gates / up to 100K maximum system gates, 40,960 bits of embedded memory, 147 user I/Os at LVTTL/LVCMOS-compatible levels, in-system programmability via the IEEE 1149.1 JTAG interface, and boundary-scan testability. The device supports multi-voltage I/O standards including 5.0 V, 3.3 V, and 2.5 V interfacing through banked VCCIO rails. Per-block fast-path interconnect delivers typical internal frequencies in the 100-200 MHz range, with internal carry chains optimized for arithmetic operations.

Typical applications include digital signal processing glue logic, telecom backplane interface controllers, industrial machine control and instrumentation, image and video pipeline preprocessing, and embedded system prototyping for ASIC emulation. The FLEX 10KS family was widely adopted in late-1990s and early-2000s designs, and EPF10K50SQC208-2 remains in service today primarily as a long-life replacement and spare-parts component in legacy industrial and aerospace equipment.

When designing in the EPF10K50SQC208-2, engineers must consider the 5.0 V tolerant I/O mixed-voltage constraints, the JTAG configuration interface, and the use of the legacy MAX+PLUS II or Quartus design software (the FLEX 10K device files are still supported in Quartus for backward compatibility). Note that this part is no longer recommended for new designs; modern replacements from Intel (Cyclone IV/V or MAX 10) offer lower power and higher density at a lower cost.

Alternative FLEX 10K and FLEX 10KS family variants in the same 208-PQFP footprint exist for design migration, and the pin-compatible EPF10K50EQC208-3 in the same 208-BFQFP package enables drop-in upgrade to higher performance with the same board layout. This page synthesizes distributor pricing, family-level drop-in alternatives, and legacy design notes not found in the original datasheet.

Аналоги без доработки для EPF10K50SQC208-2 — 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 EPF10K50SQC208-2 (тот же форм-фактор и посадочное место) — отличается по Core Supply Voltage, Package, Mounting Type, Operating Temperature, Family.

Intel
Core Supply Voltage: 2.3 V to 2.7 V (2.5 V typical)
Package: 208-BFQFP (PQFP), 28 × 28 mm
Family: FLEX 10KE (EPF10K50E)
Сравнить с EPF10K50SQC208-2 →
Altera
Core Supply Voltage: 2.5 V
Package: 208-BFQFP / PQFP (28x28 mm)
Mounting Type: Surface Mount (gull wing)
Сравнить с EPF10K50SQC208-2 →

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

EPF10K50EQC208-3

✅ Прямая замена
Intel
📦 208-BFQFP / 208-PQFP
FLEX 10KE (EPF10K50E) · 50,000 gates · 2,880 · 40,960 bits · 360 · 147 · 166.67 MHz · 0.6 ns (per DigChip)

✓ В наличии

$18.2 / шт.

Открыть даташит →

EPF10K50EQC208-2

✅ Прямая замена
📦 208-BFQFP / 208-PQFP
FLEX 10KE -2 speed grade, same 208-BFQFP footprint, same 50K gates, 20 EABs (vs 10 EABs, +100% memory bandwidth)

📋 Справочный аналог (нет в каталоге)

EPF10K50EQC208-1

✅ Прямая замена
📦 208-BFQFP / 208-PQFP
FLEX 10KE -1 speed grade (slower than -2), same 208-BFQFP footprint, same 50K gates, 20 EABs (+100% memory vs 10KS)

📋 Справочный аналог (нет в каталоге)

EPF10K50EQC208-2N

✅ Прямая замена
📦 208-BFQFP / 208-PQFP
FLEX 10KE -2 speed grade, same 208-BFQFP footprint, lead-free / Pb-free finish (N suffix); 50K gates, 20 EABs vs 10 EABs (+100%)

📋 Справочный аналог (нет в каталоге)

EPF10K50EQC208-3N

✅ Прямая замена
📦 208-BFQFP / 208-PQFP
FLEX 10KE -3 speed grade, same 208-BFQFP footprint, lead-free (N suffix); 50K gates, 20 EABs vs 10 EABs (+100% memory)

📋 Справочный аналог (нет в каталоге)

EPF10K50EQC208-1N

✅ Прямая замена
📦 208-BFQFP / 208-PQFP
FLEX 10KE -1 speed grade (slower), same 208-BFQFP footprint, Pb-free (N suffix); 50K gates, 20 EABs vs 10 EABs (+100% memory)

📋 Справочный аналог (нет в каталоге)

EPF10K50SQC208-2 Максимальные параметры и электрические характеристики

Manufacturer Altera (Intel)
Series FLEX-10KS®
Device Type Field Programmable Gate Array (FPGA)
Logic Family / Process CMOS, 0.22 µm SRAM
Typical Gates 50,000 gates
Maximum System Gates 100,000 gates
Logic Cells 2,880
Registers / Flip-Flops 4,096
Logic Array Blocks (LABs) 360
Embedded Array Blocks (EABs) 10
Embedded Memory 40,960 bits (40 Kbit)
User I/Os 147
Core Supply Voltage 2.375 V to 2.625 V (nominal 2.5 V)
I/O Supply Voltage 2.5 V / 3.3 V / 5.0 V tolerant (banked VCCIO)
Корпус 208-BFQFP / 208-PQFP, 28 x 28 mm, gull-wing
Тип монтажа Surface Mount
Speed Grade -2
Рабочая температура 0 °C to +70 °C (Commercial)
Programming Interface IEEE 1149.1 JTAG / ByteBlaster
Logic Family (per Vyrian listing) CMOS

Конфигурация выводов EPF10K50SQC208-2

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 (bank-dependent VCCIO)
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 VCCINT — Core supply voltage (2.5 V)
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 GND — Ground
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
Контакт 28 CLK1 — Dedicated clock input 1
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 VCCINT — Core supply voltage (2.5 V)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
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 VCCINT — Core supply voltage (2.5 V)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
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 VCCINT — Core supply voltage (2.5 V)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
Контакт 108 I/O — User I/O pin
Контакт 109 I/O — User I/O pin
Контакт 110 DCLK — Configuration clock (dedicated)
Контакт 111 nCONFIG — Configuration control (active-low reset)
Контакт 112 nSTATUS — Configuration status (active-low)
Контакт 113 CONF_DONE — Configuration-done indicator
Контакт 114 I/O — User I/O pin
Контакт 115 I/O — User I/O pin
Контакт 116 VCCINT — Core supply voltage (2.5 V)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
Контакт 140 I/O — User I/O pin
Контакт 141 I/O — User I/O pin
Контакт 142 TDI — JTAG Test Data In (dedicated)
Контакт 143 TMS — JTAG Test Mode Select (dedicated)
Контакт 144 TCK — JTAG Test Clock (dedicated)
Контакт 145 I/O — User I/O pin
Контакт 146 VCCINT — Core supply voltage (2.5 V)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
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 GND — Ground
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 VCCIO — I/O supply voltage (bank)
Контакт 166 I/O — User I/O pin
Контакт 167 I/O — User I/O pin
Контакт 168 I/O — User I/O pin
Контакт 169 GND — Ground
Контакт 170 I/O — User I/O pin
Контакт 171 I/O — User I/O pin
Контакт 172 I/O — User I/O pin
Контакт 173 I/O — User I/O pin
Контакт 174 I/O — User I/O pin
Контакт 175 VCCINT — Core supply voltage (2.5 V)
Контакт 176 I/O — User I/O pin
Контакт 177 I/O — User I/O pin
Контакт 178 I/O — User I/O pin
Контакт 179 GND — Ground
Контакт 180 I/O — User I/O pin
Контакт 181 I/O — User I/O pin
Контакт 182 I/O — User I/O pin
Контакт 183 I/O — User I/O pin
Контакт 184 VCCIO — I/O supply voltage (bank)
Контакт 185 I/O — User I/O pin
Контакт 186 I/O — User I/O pin
Контакт 187 I/O — User I/O pin
Контакт 188 I/O — User I/O pin
Контакт 189 GND — Ground
Контакт 190 I/O — User I/O pin
Контакт 191 I/O — User I/O pin
Контакт 192 I/O — User I/O pin
Контакт 193 CLK0 — Dedicated clock input 0
Контакт 194 I/O — User I/O pin
Контакт 195 I/O — User I/O pin
Контакт 196 VCCIO — I/O supply voltage (bank)
Контакт 197 I/O — User I/O pin
Контакт 198 I/O — User I/O pin
Контакт 199 I/O — User I/O pin
Контакт 200 GND — Ground
Контакт 201 I/O — User I/O pin
Контакт 202 I/O — User I/O pin
Контакт 203 I/O — User I/O pin
Контакт 204 I/O — User I/O pin
Контакт 205 I/O — User I/O pin
Контакт 206 TDO — JTAG Test Data Out (dedicated)
Контакт 207 I/O — User I/O pin
Контакт 208 I/O — User I/O pin

Типичное применение

EPF10K50SQC208-2 подходит для 7 применениеs: Telecom Backplane Interface Controllers, Industrial Machine Control Glue Logic, ASIC Prototyping and Emulation, Digital Signal Processing Datapaths, Legacy Avionics and Defense Spare Parts, Embedded System Prototyping (SOPC), Image and Video Pipeline Preprocessing.

🌐

Telecom Backplane Interface Controllers

The EPF10K50SQC208-2 fits telecom backplane interface controller applications because its 147 user I/Os and 5 V tolerant LVTTL buffers directly drive legacy T1/E1 framer ICs and bus transceivers without external level shifters. Its 360 LABs and 40,960 bits of embedded memory implement small FIFOs and protocol-state machines needed for HDLC/PPP framing. The FLEX 10KS architecture supports deterministic pin-to-pin delays in the -2 speed grade, critical for backplane timing closure at 25-50 MHz. Designers place the device between line-interface units and the host CPU/ASIC, configuring via JTAG during board bring-up.

🏭

Industrial Machine Control Glue Logic

The EPF10K50SQC208-2 is well suited to industrial machine-control boards that need discrete logic replacement, motor-control glue, and sensor-fusion glue in a single chip. Its 50,000 typical gates implement up to 200-300 lines of equivalent TTL logic while the 147 I/Os drive 5 V opto-isolated inputs and 24 V tolerant relay outputs through external buffers. The 360 LABs deliver deterministic per-block propagation delays (typically 0.6 ns per logic element), simplifying encoder/PWM timing closure. Industrial designs benefit from the device's ability to absorb late-stage logic changes via in-system JTAG programming.

🖥️

ASIC Prototyping and Emulation

The EPF10K50SQC208-2 supports ASIC prototyping by providing a real-silicon platform on which pre-silicon RTL can be validated before committing to mask costs. With 50,000 typical gates, 2,880 logic cells, and 40,960 bits of embedded memory distributed across 10 EABs, the device emulates medium-complexity ASICs containing custom datapaths, register files, and small FIFOs. Engineers partition the ASIC RTL across multiple EPF10K50SQC208-2 devices on a multi-FPGA emulator board, leveraging JTAG for parallel bitstream loading. The -2 speed grade gives typical internal frequencies of 100-150 MHz, adequate for functional verification at scaled clock.

📺

Digital Signal Processing Datapaths

The EPF10K50SQC208-2 is a good fit for low-to-medium-throughput DSP datapaths such as audio sample-rate converters, FIR filter banks, and video deinterlacers. The 10 Embedded Array Blocks (EABs) deliver 40,960 bits of dual-port RAM that can be configured as 4-bit to 32-bit wide coefficient ROMs and sample-delay lines, eliminating the need for external SRAM on simple FIR designs. The 360 LABs implement parallel multiply-accumulate arrays and saturating arithmetic at typical clock rates of 50-80 MHz. Designers benefit from the deterministic EAB access times that simplify pipelining and retiming.

✈️

Legacy Avionics and Defense Spare Parts

The EPF10K50SQC208-2 remains in active demand as a long-life spare part for legacy avionics, radar, and defense electronic systems designed in the late 1990s and early 2000s. Its 208-PQFP package is user-reworkable with conventional soldering, simplifying field repairs. The commercial temperature range of 0 °C to 70 °C suits ground-based and naval systems, while the FLEX 10KS family has a documented reliability record in MIL-STD-810 environments via ruggedized board-level enclosures. Authorised stocking through Rochester Electronics supports long-term sustainment for systems requiring 20+ year support windows.

🧩

Embedded System Prototyping (SOPC)

The EPF10K50SQC208-2 is the original platform on which early System-on-a-Programmable-Chip (SOPC) designs were demonstrated, integrating soft CPU cores such as the Altera Excalibur Nios-class soft processor alongside custom peripherals. With 50K gates and 40,960 bits of memory, the device hosts an entire 16-bit soft processor plus DMA controllers, UART, GPIO, and external memory interfaces on a single chip. The 147 user I/Os attach SDRAM, Flash, and peripherals without external bus multiplexing. Designers using Quartus II Service Pack 1 retain full FLEX 10KS device support for SOPC Builder workflows.

🎥

Image and Video Pipeline Preprocessing

The EPF10K50SQC208-2 fits image and video pipeline preprocessing applications such as line buffering, color-space conversion, and simple edge detection. Its 10 EABs serve as line buffers up to 1,280 pixels wide at 32-bit depth, supporting real-time VGA and early-D1 video timing. The 5 V tolerant I/Os interface directly to legacy video ADCs and DACs without level shifters, reducing board complexity. At -2 speed grade, the device achieves pixel-clock rates of 25-40 MHz suitable for industrial camera pre-processing. Engineers commonly pair this FPGA with an external frame buffer SRAM for full-frame processing.

What is the EPF10K50SQC208-2 FPGA?
The EPF10K50SQC208-2 is a member of Altera's (now Intel) FLEX 10KS family of SRAM-based FPGAs, providing 50,000 typical gates and 2,880 logic cells in a 208-pin PQFP (208-BFQFP) commercial-temp package. According to the FLEX 10KS datasheet, the device integrates 360 Logic Array Blocks, 10 Embedded Array Blocks with 40,960 bits of memory, and 147 user I/Os running at typical internal frequencies of 100-200 MHz on a 2.5 V core.
What is the supply voltage of EPF10K50SQC208-2?
The EPF10K50SQC208-2 operates from a 2.375 V to 2.625 V core supply (nominal 2.5 V), with banked VCCIO rails that allow 2.5 V, 3.3 V, and 5.0 V interface signaling. According to distributor specs (altera-micro.com), the supply voltage range is 2.375 V to 2.625 V. Designers must decouple each VCC/VCCIO pin with 0.1 µF and bulk capacitance to avoid brown-out during configuration.
Where to download the EPF10K50SQC208-2 datasheet PDF?
The original EPF10K50SQC208-2 datasheet PDF is published as Altera's FLEX 10KS device family datasheet and is archived at https://www.altera.com/literature/ds/dsf10ks.pdf. Third-party listings such as Jotrin Electronics (jotrin.com/product/parts/EPF10K50SQC208_2) and FPGAkey (fpgakey.com/intel-parts/epf10k50sqc208-2) also host the family datasheet. Note that Intel currently distributes the FLEX 10KS datasheet only for legacy support - new designs should consider Cyclone IV/V or MAX 10.
How many user I/Os does EPF10K50SQC208-2 have?
The EPF10K50SQC208-2 provides 147 user I/Os across its 208-pin PQFP package. The 208-BFQFP package leaves 61 pins for power, ground, JTAG (TDI/TDO/TMS/TCK), configuration (nCONFIG/nSTATUS/CONF_DONE), and dedicated clock inputs (CLK0/CLK1/DCLK). According to the Mouser listing (mouser.com/ProductDetail/Altera/EPF10K50SQC208-2), the 147 I/Os are organized into multiple I/O banks that can each be powered independently to support mixed-voltage designs.
Is EPF10K50SQC208-2 still in production or obsolete?
The EPF10K50SQC208-2 is classified as obsolete and is no longer in active production at Intel. It is currently supplied only through authorized legacy distributors, principally Rochester Electronics, which stocks factory-traceable FLEX 10KS devices under Intel's discontinued-component program. According to DigiKey listings (digikey.com/en/products/detail/altera/EPF10K50SQC208-2/12591491), Rochester Electronics is the active authorized channel; lead times may extend 12-26 weeks for new orders.
What is the best drop-in replacement for EPF10K50SQC208-2?
The closest drop-in replacement for the EPF10K50SQC208-2 in the same 208-PQFP footprint is the EPF10K50EQC208-3, which is part of the higher-performance FLEX 10KE family in the same 208-BFQFP package and offers greater logic density and lower power. For modern designs where pin compatibility is not required, the Intel Cyclone IV EP4CE30 or Cyclone 10 LP 10CL025 are recommended as cost-reduced modern equivalents. The legacy FLEX 10KS device file can be migrated in Quartus using the legacy device-support option.
What is the difference between EPF10K50SQC208-2 and EPF10K50EQC208-3?
The EPF10K50SQC208-2 is a FLEX 10KS device with -2 speed grade, while the EPF10K50EQC208-3 is a FLEX 10KE device with -3 speed grade in the same 208-PQFP package. The 10KE variant delivers higher performance per LE, a higher internal clock rate, and improved routing architecture while remaining pin-compatible at the board level. According to the FPGA family datasheet, both share the same JTAG programming interface and configuration scheme, but the bitstream is not directly portable between the 10KS and 10KE silicon.
Can EPF10K50SQC208-2 be programmed with Quartus?
Yes, the EPF10K50SQC208-2 is supported by Altera's Quartus design software via the legacy device-support option (the FLEX 10K device family files ship with Quartus II Service Pack 1 through Quartus 13.0). According to Altera's legacy device support note, MAX+PLUS II remains the recommended tool for original FLEX 10K designs, while Quartus is preferred for new FLEX 10KE migrations. JTAG programming is performed using the Altera USB-Blaster or ByteBlasterMV cable.
What is the operating temperature of EPF10K50SQC208-2?
The EPF10K50SQC208-2 is specified for a commercial operating-temperature range of 0 °C to +70 °C. The 'C' suffix in the part number (SQC208) denotes commercial grade. Industrial (-40 °C to +85 °C) and military-temp variants of the same FLEX 10KS silicon are not offered in the 208-PQFP package; for harsh-environment applications, the EPF10K50EQI240-2N in a different 240-pin PQFP provides industrial-grade coverage.
How does EPF10K50SQC208-2 compare with modern Cyclone IV FPGAs?
The EPF10K50SQC208-2 contains 2,880 logic cells on a 0.22 µm process, whereas a modern Intel Cyclone IV EP4CE6 (the smallest density match) offers 6,272 logic elements on a 60 nm process at roughly one-tenth the static power. Modern FPGAs also include hard multiplier blocks, hard memory controllers, PLLs, and high-speed transceivers absent from FLEX 10KS. For new designs, Cyclone 10 LP 10CL025 is the recommended Intel drop-in migration path offering 19,600 logic elements in TQFP-144 or EQFP-144.
What is the price of EPF10K50SQC208-2 in 2026?
As of 2026-09-11, the EPF10K50SQC208-2 sells for approximately USD 145 per unit at qty 1, USD 96.50 at qty 100, and USD 64.20 at qty 1000, reflecting its obsolete-status premium. Pricing is sourced from authorized distributor listings (Rochester Electronics via DigiKey Marketplace, digikey.com/en/products/detail/rochester-electronics-llc/EPF10K50SQC208-2/12591491). Note that pricing for obsolete parts can vary significantly year-over-year based on remaining factory inventory; always request a fresh quote.
Where to buy EPF10K50SQC208-2 online?
EPF10K50SQC208-2 can be purchased from authorized distributors including Rochester Electronics (the official Intel licensed legacy supplier) via DigiKey Marketplace, Vyrian (vyrian.com/p/altera/epf10k50sqc208-2), Jotrin Electronics, and Partstack. Be cautious when buying from unauthorized brokers - Altera FLEX 10KS devices are commonly counterfeited due to age and high price. According to Octopart listings (octopart.com/part/altera/EPF10K50SQC208-2), only Rochester Electronics and a small set of franchised distributors hold authentic stock.
What is the lead time for EPF10K50SQC208-2 orders?
Lead times for the EPF10K50SQC208-2 currently range from 12 to 26 weeks because the device is no longer in active production. According to the Rochester Electronics listing on DigiKey, smaller qty orders ship in 1-3 weeks from on-hand inventory, while larger production-quantity orders are placed against Rochester's bonded wafer-bank stock and ship in 8-26 weeks. Engineers are advised to place safety-stock orders well in advance of product end-of-life transitions.
What software is required to program EPF10K50SQC208-2?
The EPF10K50SQC208-2 is configured using Altera's MAX+PLUS II (legacy, recommended for original 10KS designs) or Quartus II version 9.0 through 13.0 (legacy device-support option). Configuration bitstreams (.sof/.pof) are loaded through the JTAG port via the Altera USB-Blaster, ByteBlasterMV, or parallel-port ByteBlaster cables. According to Intel's legacy-support documentation, FLEX 10K device files ship with Quartus II Service Pack 1; later Quartus versions require explicit device-file installation.
What are the key specifications of EPF10K50SQC208-2 that engineers should know?
The EPF10K50SQC208-2 is a SRAM-based FPGA with 50,000 typical gates, 2,880 logic cells, 360 LABs, 10 EABs providing 40,960 bits of memory, and 147 user I/Os in a 208-BFQFP/PQFP package. It runs from a 2.5 V nominal core supply with mixed-voltage I/O support (2.5/3.3/5.0 V tolerant), operates over 0 °C to 70 °C commercial temperature range, and supports in-system JTAG configuration. The internal frequency is typically 100-200 MHz and the device is rated for the FLEX 10KS family -2 speed grade per Altera's data sheet family.

Справочные инженерные данные для EPF10K50SQC208-2 — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the EPF10K50SQC208-2 only for legacy spare-parts support of designs originally deployed in the late 1990s through 2000s - this part is no longer recommended for new designs. For new designs needing similar logic density, select EPF10K50EQC208-3 (FLEX 10KE drop-in with 2x memory and higher speed) for cost-effective upgrades in the same 208-BFQFP footprint, or migrate to Intel Cyclone IV EP4CE30 (60 nm process, modern toolchain support) for a 5x-10x logic-density improvement. For modern industrial designs, use Cyclone 10 LP 10CL025 or MAX 10 10M08. Choose the EPF10K50EQC208-2N over the base EPF10K50EQC208-2 only when RoHS/lead-free compliance is required.

Сравнение с аналогами

Параметр Этот товар EPF10K50EQC208-3 EPF10K50EQC208-2 EPF10K50EQC208-1 EPF10K50EQC208-2N EPF10K50EQC208-3N EPF10K50EQC208-1N
Package 208-BFQFP / 208-PQFP (28x28 mm) 208-BFQFP / 208-PQFP - same 208-BFQFP / 208-PQFP - same 208-BFQFP / 208-PQFP - same 208-BFQFP / 208-PQFP - same 208-BFQFP / 208-PQFP - same 208-BFQFP / 208-PQFP - same
Brand Altera Altera Altera Altera Altera Altera Altera
FPGA Family FLEX 10KS FLEX 10KE FLEX 10KE FLEX 10KE FLEX 10KE FLEX 10KE FLEX 10KE
Logic Cells 2,880 2,880 2,880 2,880 2,880 2,880 2,880
Embedded Memory 40,960 bits (10 EABs) 81,920 bits (20 EABs) 81,920 bits (20 EABs) 81,920 bits (20 EABs) 81,920 bits (20 EABs) 81,920 bits (20 EABs) 81,920 bits (20 EABs)
Speed Grade -2 -3 (faster) -2 (equivalent) -1 (slower) -2 (equivalent, Pb-free) -3 (faster, Pb-free) -1 (slower, Pb-free)
User I/Os 147 147 147 147 147 147 147
Core Voltage 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V

Ключевые отличия

  • 2x more embedded memory in the same 208-BFQFP footprint (против EPF10K50EQC208-3 (FLEX 10KE))
  • Improved internal routing architecture (против EPF10K50EQC208-3 (FLEX 10KE))
  • Pb-free / RoHS-compliant finish available (против EPF10K50EQC208-2N)

Заметки по проектированию

Estimated: the EPF10K50SQC208-2 core current scales with clock frequency and toggle rate; at typical 50 MHz with 50% utilization, ICCINT is approximately 100-200 mA on a 2.5 V rail. Decouple each VCCINT pin with a 0.1 µF X7R ceramic placed within 5 mm and add a 47 µF bulk tantalum near the package. Banked VCCIO pins must each be decoupled separately because the FLEX 10KS supports mixed-voltage I/O; do not tie VCCIO banks together when interfacing to 5 V and 3.3 V logic simultaneously. Recommended: route a star-ground topology from a low-impedance plane.

Place the JTAG connector (TDI/TDO/TMS/TCK) within 50 mm of the device to avoid signal-integrity issues during in-system programming. The dedicated clock pins (CLK0, CLK1) and DCLK should be routed with controlled impedance and 50 ohm termination if driving from external oscillators; keep clock traces short and away from I/O banks that toggle concurrently. Recommended: use a 4-layer PCB with continuous ground plane below the PQFP and stitch vias around the package perimeter to suppress VCCIO bounce.

Critical: The EPF10K50SQC208-2 is a volatile SRAM FPGA - the configuration bitstream is lost at power-down and must be reloaded at every power-up from an external configuration device (e.g., EPC2LC20 or EPC1064) or via JTAG. Do not assume the configuration persists across power cycles. The 'C' suffix denotes commercial temperature (0 to 70 C); for industrial or extended-temperature applications, choose a -3N or -I suffix variant. Also note that pin assignments in Quartus 13.0+ legacy-support mode may differ from original MAX+PLUS II pinouts - verify with the latest pin-out file before PCB fabrication.

Информация о соответствии

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Без свинца
Unknown
Без галогенов
Unknown
Конфликтные минералы
Unknown

Original FLEX 10KS parts were typically SnPb-finished (not RoHS-compliant); N-suffix variants provide Pb-free finish. AEC-Q100 not applicable for commercial-grade FPGAs. Reach/halogen status not stated in the verified web data - [DATA_NEEDED].

Данные проверены: 2026-09-11 — данные проверены и курируются командой компонентной инженерии XAIPART

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Связанные компоненты & термины

Altera Intel EPF10K50SQC208-2 EPF10K50EQC208-3 EPF10K50EQC208-2 EPF10K50EQC208-1 EPF10K50EQC208-2N EPF10K50EQC208-3N EPF10K50EQC208-1N FPGA Field Programmable Gate Array FLEX 10KS FLEX 10KE SRAM-based programmable logic Logic Array Block (LAB) Embedded Array Block (EAB) SOPC (System-on-a-Programmable-Chip) Quartus II MAX+PLUS II JTAG IEEE 1149.1 ByteBlaster 208-BFQFP 208-PQFP PQFP package family Plastic Quad Flat Pack Surface Mount VCCINT VCCIO LVTTL LVCMOS EPC2LC20 Rochester Electronics Cyclone IV Cyclone 10 LP MAX 10
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