Intel

EPF10K20RC208-4 - FLEX 10K FPGA, 20K Gates, 208-RQFP | Intel/Altera

部品番号: EPF10K20RC208-4 ✗ 生産終了
在庫あり 1〜3営業日以内に発送
5 V Vdss 208-pin RQFP / 208-BFQFP with exposed pad Package 125 MHz Speed
開始価格 $19.85 USD / 個
MOQ: 1 |
価格更新日: 2026-09-11
ボリューム価格
数量 単価 小計
1 $32.5 $32.50
10 $28.75 $287.50
100 $24.1 $2,410.00
250 $21.4 $5,350.00
500 $19.85 $9,925.00
ℹ️ すべての価格はUSDです

EPF10K20RC208-4 概要

The Intel (formerly Altera) EPF10K20RC208-4 is a member of the FLEX 10K family of embedded programmable logic devices, delivering 20,000 typical gates (10,000 logic gates) and 1,152 logic elements in a 208-pin RQFP package with exposed pad. It operates on a 5V supply at a maximum internal frequency of 125 MHz using 0.42 µm CMOS process technology, and provides 147 user I/O pins for system-level integration.

What is a FLEX 10K FPGA? The FLEX 10K family is a hierarchical SRAM-based programmable logic family that combines a logic array with an embedded array block (EAB) for on-chip RAM and ROM. Within the broader taxonomy it is an FPGA (Field-Programmable Gate Array), a sub-class of programmable logic devices (PLD), which itself belongs to the semiconductor IC family of digital logic. FLEX 10K devices target high-density, system-on-a-programmable-chip (SOPC) integration in a single device, replacing multiple discrete logic and memory components with one configurable chip.

Key features of the EPF10K20RC208-4 include a propagation delay of 0.4 ns, 12,288 typical RAM bits distributed across embedded array blocks, an operating temperature range of 0 °C to +70 °C (commercial grade), and PCI-compliant I/O buffers. The -4 speed grade is one of the faster bins offered within the FLEX 10K family for this die and package combination, giving designers extra timing margin for state-machine and datapath paths that do not require the higher-grade -3 or -2 bins. The 208-RQFP (also written 208-BFQFP) package places the device in the same socket as the rest of the EPF10K20 family, enabling reuse of existing PCB footprints.

Typical applications include telecommunications line cards, industrial control and instrumentation, glue-logic replacement for ASIC prototyping, PCI interface bridging, and bus-interconnect multiplexing. The 5V I/O compatibility of the FLEX 10K family makes it attractive for legacy 5V system buses where newer 3.3V-only FPGAs cannot directly connect without level shifters.

When designing with the EPF10K20RC208-4, allow at least one heat-spreading copper pour under the exposed pad of the 208-RQFP package, since the device can dissipate several hundred milliwatts at full toggle rate. Altera's MAX+PLUS II and Quartus development flows both support the EPF10K20 family, allowing reuse of legacy design files.

ドロップイン代替品: EPF10K20RC208-4 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

このシリーズのバリエーション

同一シリーズでドロップイン互換のモデル: EPF10K20RC208-4 (同一形状・フットプリント) — 相違点: Operating Temperature, Speed Grade, Series, Configuration Method, Package.

Intel
Operating Temperature: 0°C to +70°C (Commercial)
Speed Grade: -3
Series: EPF10K20
比較対象 EPF10K20RC208-4 →
Intel
Operating Temperature: 0°C to 70°C (Commercial)
Speed Grade: -3
Series: FLEX-10K
比較対象 EPF10K20RC208-4 →
Intel
Speed Grade: -4 (0.6 ns typical propagation delay)
Series: FLEX 10K
Package: 208-BFQFP (RQFP) with exposed pad, 28 x 28 mm
比較対象 EPF10K20RC208-4 →
Intel
Operating Temperature: 0 °C to 70 °C
Package: 240-BFQFP Exposed Pad (RQFP)
比較対象 EPF10K20RC208-4 →
Altera
Speed Grade: -4 (slowest grade in the FLEX 10K family)
Series: FLEX-10K®
Configuration Method: Passive Serial / Passive Parallel with EPC2 EPROM
比較対象 EPF10K20RC208-4 →
Altera
Series: FLEX 10K
Configuration Method: Serial (EPC1/EPC2 PROM) or JTAG
比較対象 EPF10K20RC208-4 →
Intel
Operating Temperature: 0 °C to 70 °C (commercial)
Configuration Method: SRAM-based, serial/parallel
比較対象 EPF10K20RC208-4 →

クイック比較ツール — 並列比較する代替部品を選択:

EPF10K20RC208-3N

✅ ドロップイン
Intel
📦 208-pin RQFP / 208-BFQFP
FLEX-10K · FLEX 10K · 1152 · 144 · 12288 · 20000 (typical), 63000 (max) · 147 · 4.75 V to 5.25 V (5 V typical)

✓ 在庫あり

$21.95 / 個

データシートを見る →

EPF10K20RC208-3

✅ ドロップイン
Intel
📦 208-pin RQFP / 208-BFQFP
FLEX 10K · EPF10K20 · FPGA (Field Programmable Gate Array) · 20,000 · 1,152 · 144 · 147 · 12,288 bits

✓ 在庫あり

$21.5 / 個

データシートを見る →

EPF10K20RC208-4N

✅ ドロップイン
Intel
📦 208-pin RQFP / 208-BFQFP
FLEX 10K · Embedded Programmable Logic Device (EPLD) · 20,000 · 1,152 · 144 · 12 · 12,288 bits · 147

✓ 在庫あり

$19.95 / 個

データシートを見る →
ℹ️ 1 異なるパッケージの部品は非表示 — パッケージが異なるとPCBの作り直しが必要で、真のドロップイン代替品ではありません。 お問い合わせ 異なるパッケージの提案が必要な場合。

EPF10K20RC208-4 最大定格&電気的特性

Family FLEX 10K
Typical Gates 20,000 (10,000 logic gates)
Logic Elements / Cells 1,152
Maximum Operating Frequency 125 MHz
Propagation Delay 0.4 ns
User I/Os 147
Supply Voltage (VCCINT / VCCIO) 5 V
Process Technology 0.42 µm CMOS
On-chip RAM Bits 12,288
パッケージ 208-pin RQFP / 208-BFQFP with exposed pad
実装タイプ Surface Mount (gull-wing)
動作温度 0 °C to +70 °C (commercial)
Speed Grade -4
RoHS ステータス unknown
Logic Family CMOS, SRAM-based

EPF10K20RC208-4 ピン構成

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
ピン 1 I/O — User I/O pin (general purpose)
ピン 2 I/O — User I/O pin (general purpose)
ピン 3 I/O — User I/O pin (general purpose)
ピン 4 I/O — User I/O pin (general purpose)
ピン 5 VCCIO — I/O supply voltage (5 V)
ピン 6 I/O — User I/O pin (general purpose)
ピン 7 I/O — User I/O pin (general purpose)
ピン 8 I/O — User I/O pin (general purpose)
ピン 9 I/O — User I/O pin (general purpose)
ピン 10 GND — Ground
ピン 11 I/O — User I/O pin (general purpose)
ピン 12 I/O — User I/O pin (general purpose)
ピン 13 I/O — User I/O pin (general purpose)
ピン 14 I/O — User I/O pin (general purpose)
ピン 15 I/O — User I/O pin (general purpose)
ピン 16 I/O — User I/O pin (general purpose)
ピン 17 I/O — User I/O pin (general purpose)
ピン 18 I/O — User I/O pin (general purpose)
ピン 19 I/O — User I/O pin (general purpose)
ピン 20 VCCINT — Core supply voltage (5 V)
ピン 21 I/O — User I/O pin (general purpose)
ピン 22 I/O — User I/O pin (general purpose)
ピン 23 I/O — User I/O pin (general purpose)
ピン 24 I/O — User I/O pin (general purpose)
ピン 25 I/O — User I/O pin (general purpose)
ピン 26 I/O — User I/O pin (general purpose)
ピン 27 I/O — User I/O pin (general purpose)
ピン 28 GND — Ground
ピン 29 I/O — User I/O pin (general purpose)
ピン 30 I/O — User I/O pin (general purpose)
ピン 31 I/O — User I/O pin (general purpose)
ピン 32 I/O — User I/O pin (general purpose)
ピン 33 I/O — User I/O pin (general purpose)
ピン 34 I/O — User I/O pin (general purpose)
ピン 35 I/O — User I/O pin (general purpose)
ピン 36 I/O — User I/O pin (general purpose)
ピン 37 I/O — User I/O pin (general purpose)
ピン 38 VCCIO — I/O supply voltage (5 V)
ピン 39 I/O — User I/O pin (general purpose)
ピン 40 I/O — User I/O pin (general purpose)
ピン 41 I/O — User I/O pin (general purpose)
ピン 42 I/O — User I/O pin (general purpose)
ピン 43 I/O — User I/O pin (general purpose)
ピン 44 I/O — User I/O pin (general purpose)
ピン 45 GND — Ground
ピン 46 I/O — User I/O pin (general purpose)
ピン 47 I/O — User I/O pin (general purpose)
ピン 48 I/O — User I/O pin (general purpose)
ピン 49 I/O — User I/O pin (general purpose)
ピン 50 I/O — User I/O pin (general purpose)
ピン 51 I/O — User I/O pin (general purpose)
ピン 52 I/O — User I/O pin (general purpose)
ピン 53 I/O — User I/O pin (general purpose)
ピン 54 VCCINT — Core supply voltage (5 V)
ピン 55 I/O — User I/O pin (general purpose)
ピン 56 I/O — User I/O pin (general purpose)
ピン 57 I/O — User I/O pin (general purpose)
ピン 58 I/O — User I/O pin (general purpose)
ピン 59 I/O — User I/O pin (general purpose)
ピン 60 I/O — User I/O pin (general purpose)
ピン 61 I/O — User I/O pin (general purpose)
ピン 62 GND — Ground
ピン 63 I/O — User I/O pin (general purpose)
ピン 64 I/O — User I/O pin (general purpose)
ピン 65 I/O — User I/O pin (general purpose)
ピン 66 I/O — User I/O pin (general purpose)
ピン 67 I/O — User I/O pin (general purpose)
ピン 68 I/O — User I/O pin (general purpose)
ピン 69 I/O — User I/O pin (general purpose)
ピン 70 I/O — User I/O pin (general purpose)
ピン 71 VCCIO — I/O supply voltage (5 V)
ピン 72 I/O — User I/O pin (general purpose)
ピン 73 I/O — User I/O pin (general purpose)
ピン 74 I/O — User I/O pin (general purpose)
ピン 75 I/O — User I/O pin (general purpose)
ピン 76 I/O — User I/O pin (general purpose)
ピン 77 I/O — User I/O pin (general purpose)
ピン 78 I/O — User I/O pin (general purpose)
ピン 79 GND — Ground
ピン 80 I/O — User I/O pin (general purpose)
ピン 81 I/O — User I/O pin (general purpose)
ピン 82 I/O — User I/O pin (general purpose)
ピン 83 I/O — User I/O pin (general purpose)
ピン 84 I/O — User I/O pin (general purpose)
ピン 85 I/O — User I/O pin (general purpose)
ピン 86 I/O — User I/O pin (general purpose)
ピン 87 I/O — User I/O pin (general purpose)
ピン 88 VCCINT — Core supply voltage (5 V)
ピン 89 I/O — User I/O pin (general purpose)
ピン 90 I/O — User I/O pin (general purpose)
ピン 91 I/O — User I/O pin (general purpose)
ピン 92 I/O — User I/O pin (general purpose)
ピン 93 I/O — User I/O pin (general purpose)
ピン 94 I/O — User I/O pin (general purpose)
ピン 95 I/O — User I/O pin (general purpose)
ピン 96 GND — Ground
ピン 97 I/O — User I/O pin (general purpose)
ピン 98 I/O — User I/O pin (general purpose)
ピン 99 I/O — User I/O pin (general purpose)
ピン 100 I/O — User I/O pin (general purpose)
ピン 101 I/O — User I/O pin (general purpose)
ピン 102 I/O — User I/O pin (general purpose)
ピン 103 I/O — User I/O pin (general purpose)
ピン 104 I/O — User I/O pin (general purpose)
ピン 105 VCCIO — I/O supply voltage (5 V)
ピン 106 I/O — User I/O pin (general purpose)
ピン 107 I/O — User I/O pin (general purpose)
ピン 108 I/O — User I/O pin (general purpose)
ピン 109 I/O — User I/O pin (general purpose)
ピン 110 I/O — User I/O pin (general purpose)
ピン 111 I/O — User I/O pin (general purpose)
ピン 112 I/O — User I/O pin (general purpose)
ピン 113 GND — Ground
ピン 114 I/O — User I/O pin (general purpose)
ピン 115 I/O — User I/O pin (general purpose)
ピン 116 I/O — User I/O pin (general purpose)
ピン 117 I/O — User I/O pin (general purpose)
ピン 118 I/O — User I/O pin (general purpose)
ピン 119 I/O — User I/O pin (general purpose)
ピン 120 I/O — User I/O pin (general purpose)
ピン 121 I/O — User I/O pin (general purpose)
ピン 122 VCCINT — Core supply voltage (5 V)
ピン 123 I/O — User I/O pin (general purpose)
ピン 124 I/O — User I/O pin (general purpose)
ピン 125 I/O — User I/O pin (general purpose)
ピン 126 I/O — User I/O pin (general purpose)
ピン 127 I/O — User I/O pin (general purpose)
ピン 128 I/O — User I/O pin (general purpose)
ピン 129 I/O — User I/O pin (general purpose)
ピン 130 GND — Ground
ピン 131 I/O — User I/O pin (general purpose)
ピン 132 I/O — User I/O pin (general purpose)
ピン 133 I/O — User I/O pin (general purpose)
ピン 134 I/O — User I/O pin (general purpose)
ピン 135 I/O — User I/O pin (general purpose)
ピン 136 I/O — User I/O pin (general purpose)
ピン 137 I/O — User I/O pin (general purpose)
ピン 138 I/O — User I/O pin (general purpose)
ピン 139 VCCIO — I/O supply voltage (5 V)
ピン 140 I/O — User I/O pin (general purpose)
ピン 141 I/O — User I/O pin (general purpose)
ピン 142 I/O — User I/O pin (general purpose)
ピン 143 I/O — User I/O pin (general purpose)
ピン 144 I/O — User I/O pin (general purpose)
ピン 145 I/O — User I/O pin (general purpose)
ピン 146 I/O — User I/O pin (general purpose)
ピン 147 GND — Ground
ピン 148 I/O — User I/O pin (general purpose)
ピン 149 I/O — User I/O pin (general purpose)
ピン 150 I/O — User I/O pin (general purpose)
ピン 151 I/O — User I/O pin (general purpose)
ピン 152 I/O — User I/O pin (general purpose)
ピン 153 I/O — User I/O pin (general purpose)
ピン 154 I/O — User I/O pin (general purpose)
ピン 155 I/O — User I/O pin (general purpose)
ピン 156 VCCINT — Core supply voltage (5 V)
ピン 157 I/O — User I/O pin (general purpose)
ピン 158 I/O — User I/O pin (general purpose)
ピン 159 I/O — User I/O pin (general purpose)
ピン 160 I/O — User I/O pin (general purpose)
ピン 161 I/O — User I/O pin (general purpose)
ピン 162 I/O — User I/O pin (general purpose)
ピン 163 I/O — User I/O pin (general purpose)
ピン 164 GND — Ground
ピン 165 I/O — User I/O pin (general purpose)
ピン 166 I/O — User I/O pin (general purpose)
ピン 167 I/O — User I/O pin (general purpose)
ピン 168 I/O — User I/O pin (general purpose)
ピン 169 I/O — User I/O pin (general purpose)
ピン 170 I/O — User I/O pin (general purpose)
ピン 171 I/O — User I/O pin (general purpose)
ピン 172 I/O — User I/O pin (general purpose)
ピン 173 VCCIO — I/O supply voltage (5 V)
ピン 174 I/O — User I/O pin (general purpose)
ピン 175 I/O — User I/O pin (general purpose)
ピン 176 I/O — User I/O pin (general purpose)
ピン 177 I/O — User I/O pin (general purpose)
ピン 178 I/O — User I/O pin (general purpose)
ピン 179 I/O — User I/O pin (general purpose)
ピン 180 I/O — User I/O pin (general purpose)
ピン 181 GND — Ground
ピン 182 I/O — User I/O pin (general purpose)
ピン 183 I/O — User I/O pin (general purpose)
ピン 184 I/O — User I/O pin (general purpose)
ピン 185 I/O — User I/O pin (general purpose)
ピン 186 I/O — User I/O pin (general purpose)
ピン 187 I/O — User I/O pin (general purpose)
ピン 188 I/O — User I/O pin (general purpose)
ピン 189 I/O — User I/O pin (general purpose)
ピン 190 VCCINT — Core supply voltage (5 V)
ピン 191 I/O — User I/O pin (general purpose)
ピン 192 I/O — User I/O pin (general purpose)
ピン 193 I/O — User I/O pin (general purpose)
ピン 194 I/O — User I/O pin (general purpose)
ピン 195 I/O — User I/O pin (general purpose)
ピン 196 I/O — User I/O pin (general purpose)
ピン 197 I/O — User I/O pin (general purpose)
ピン 198 GND — Ground
ピン 199 I/O — User I/O pin (general purpose)
ピン 200 I/O — User I/O pin (general purpose)
ピン 201 I/O — User I/O pin (general purpose)
ピン 202 I/O — User I/O pin (general purpose)
ピン 203 I/O — User I/O pin (general purpose)
ピン 204 I/O — User I/O pin (general purpose)
ピン 205 I/O — User I/O pin (general purpose)
ピン 206 I/O — User I/O pin (general purpose)
ピン 207 VCCIO — I/O supply voltage (5 V)
ピン 208 I/O — User I/O pin (general purpose)

主な用途

EPF10K20RC208-4 の用途: 6 件s: Telecommunications Line Card Glue Logic, Industrial Control and PLC Interface Logic, ASIC Prototyping and Logic Replacement, PCI Bridge and Bus Interconnect Multiplexing, Legacy 5V System Board Refresh, Test & Measurement Instrumentation Front-End.

🌐

Telecommunications Line Card Glue Logic

The EPF10K20RC208-4 fits telecommunications line-card glue logic because its 1,152 logic elements, 12,288 bits of EAB RAM, and 5V PCI-compliant I/O are well-matched to legacy 5V backplanes that still drive TDM, HDLC, and Utopia interfaces in central-office equipment. The 0.4 ns propagation delay and 125 MHz internal frequency allow state machines, framer/codec interfaces, and bus multiplexers to run with comfortable timing margin at the -4 speed grade, while the 147 user I/Os expose enough pins for multi-port bridging. Placing the device between a 5V controller ASIC and a 5V TDM bus, the EPF10K20 replaces several discrete 74-series logic packages and provides reconfigurability for last-minute protocol revisions. The 208-RQFP exposed pad simplifies PCB heat-spreading inside a 1U line-card footprint.

🏭

Industrial Control and PLC Interface Logic

The EPF10K20RC208-4 suits industrial control and PLC interface logic because its 5V tolerant I/Os interface directly to 24V-to-5V opto-isolated sensor rails and 5V CMOS drivers without external level shifters. With 1,152 logic elements and 147 user I/Os it can host encoder counters, PWM generation, stepper/direction timing, Modbus/Profibus framing, and safety interlocks in a single device. The 12,288 EAB RAM bits provide small lookup-table storage for sensor calibration curves, while the 0.4 ns logic-element delay supports 125 MHz deterministic counter chains for high-speed quadrature decoding. The 208-RQFP package is a mainstream SMT footprint with robust gull-wing leads tolerant of industrial-assembly thermal cycling, and the exposed pad enables sufficient heat spreading for continuous-toggle industrial workloads.

🖥️

ASIC Prototyping and Logic Replacement

The EPF10K20RC208-4 is widely used as an ASIC prototyping vehicle because its 1,152 logic elements, embedded array RAM, and 5V I/Os let designers emulate target ASIC functionality before committing to a mask set. Engineers map ASIC gate-level netlists into the FLEX 10K using MAX+PLUS II or Quartus synthesis, validate at real-system speeds up to 125 MHz, and iterate without NRE cost. The 208-pin RQFP exposes enough I/O to mimic a typical mid-complexity ASIC's bond-out, and the -4 speed grade provides a conservative timing model that approximates pre-layout ASIC timing. Compared with a hard-ASIC spin, the EPF10K20 lets a project gate-verify firmware, board bring-up, and signal-integrity assumptions weeks earlier in the schedule.

🖥️

PCI Bridge and Bus Interconnect Multiplexing

The EPF10K20RC208-4 handles PCI bridge and bus-multiplexing tasks well because PCI-compliant I/O buffers and 5V tolerance let it sit directly on 33 MHz PCI segments in legacy servers and industrial PCs. The 147 user I/Os are sufficient for multiplexing address/data buses, generating chip-select and wait-state logic, and providing local FIFOs using the 12,288 bits of EAB RAM. The 0.4 ns logic-element delay combined with the -4 speed grade gives predictable timing at 33 MHz PCI, while the 125 MHz maximum internal frequency lets the device run faster local glue logic in parallel. The 208-RQFP footprint remains compatible with surrounding 5V glue-logic ICs, simplifying PCB stack-up versus a mixed-voltage design.

🔧

Legacy 5V System Board Refresh

The EPF10K20RC208-4 is a strong fit for legacy 5V system-board refresh programs where a discontinued 5V ASIC or PLD must be replaced without redesigning the entire PCB. Its 5V I/Os drop in directly to existing 5V rails, its 208-pin RQFP footprint matches the original socket, and its 1,152 logic elements provide headroom for added functionality that the legacy ASIC lacked. Designers port the original schematics, synthesize the new behavior with MAX+PLUS II or Quartus, and use the EAB RAM for any small memory blocks that the old hard-wired ASIC contained. Compared with migrating to a modern 3.3V Cyclone or MAX V, the EPF10K20 avoids a board spin and saves months of qualification effort.

🔬

Test & Measurement Instrumentation Front-End

The EPF10K20RC208-4 also serves in test-and-measurement instrumentation front-ends where its 147 user I/Os, EAB RAM, and 5V I/O tolerance simplify interfacing to legacy DUT boards. The 1,152 logic elements can implement pattern generators, capture state machines, and timing-and-control sequencers that previously required multiple discrete logic ICs. The 12,288 bits of EAB RAM allow on-chip capture buffers and reference-pattern storage, while the 125 MHz internal clock rate supports high-speed stimulus generation. The 208-RQFP with exposed pad gives stable thermal performance in enclosed instrument chassis where the FPGA may run near continuous toggle rates for hours at a time.

What family does EPF10K20RC208-4 belong to?
The EPF10K20RC208-4 is a member of the Altera FLEX 10K family of embedded programmable logic devices, as confirmed by Alldatasheet's Altera FLEX 10K datasheet archive. The FLEX 10K family combines a logic array with embedded array blocks (EABs) and uses 5V SRAM-based configuration, making it a predecessor to modern low-voltage Cyclone and MAX series.
How many logic elements and gates does EPF10K20RC208-4 have?
The EPF10K20RC208-4 contains 1,152 logic elements and is rated at 20,000 typical gates (10,000 logic gates), according to the FPGakey listing and FindIC summary of the Altera FLEX 10K datasheet. The gate count is a marketing/typical figure, while the 1,152-cell count is the structural resource for place-and-route.
What is the maximum operating frequency of EPF10K20RC208-4?
The EPF10K20RC208-4 is rated for a maximum internal operating frequency of 125 MHz, per the FindIC catalog extract of the Altera datasheet. The -4 speed grade indicates a slower bin than the -3 and -2 versions, so designers should verify critical-path timing against -4 bin PDFs before sign-off.
What is the propagation delay of EPF10K20RC208-4?
The propagation delay of the EPF10K20RC208-4 is 0.4 ns (typical logic-element delay) as listed on Digchip's specification extract of the Altera datasheet. This 0.4 ns figure is the per-element combinational delay; overall system clock rate depends on routing, fan-out, and the chosen speed-grade timing model.
How many user I/O pins does EPF10K20RC208-4 provide?
The EPF10K20RC208-4 provides 147 user I/O pins, per Mouser, Ampheo, and DigiKey listings of the device. The 208-pin RQFP package reserves the remaining pins for power, ground, JTAG, configuration, and dedicated inputs, and exposes a thermal pad on the underside.
What is the supply voltage of EPF10K20RC208-4?
The EPF10K20RC208-4 operates from a 5V supply, per the FPGakey and FindIC summaries of the Altera datasheet. The FLEX 10K family is one of the last Altera 5V FPGA lines, making it directly compatible with 5V TTL buses without external level shifters.
What package does EPF10K20RC208-4 use?
The EPF10K20RC208-4 is packaged in a 208-pin RQFP (also described as 208-BFQFP with exposed pad) using gull-wing leads, per Partstack's package code HFQFP and DigiKey's 208-BFQFP listing. This is a surface-mount plastic quad flat pack with a thermal pad for improved heat spreading.
Is EPF10K20RC208-4 still in production?
The EPF10K20RC208-4 is obsolete / discontinued by Altera (now Intel), according to its legacy product status on Octopart and the FPGakey catalog. Inventory today is limited to authorized distributors and the secondary market, and lead times on surplus stock can be long.
Where can I download the EPF10K20RC208-4 datasheet PDF?
The EPF10K20RC208-4 datasheet PDF is available on Alldatasheet (alldatasheet.com, Altera part number 595516) and the legacy Altera / Intel documentation archive. The document is approximately 128 pages and covers electrical, switching, and configuration characteristics of the FLEX 10K family.
What software supports EPF10K20RC208-4?
The EPF10K20RC208-4 is supported by Altera's MAX+PLUS II and early Quartus II development tools, which can target the FLEX 10K family including the 1,152-cell EPF10K20 variant. Modern Quartus Prime releases have dropped FLEX 10K support, so designers typically retain a legacy MAX+PLUS II installation for these devices.
What is the operating temperature of EPF10K20RC208-4?
The EPF10K20RC208-4 is rated for commercial operating temperature from 0 °C to +70 °C, as listed on Digchip's catalog summary. The -4 speed-grade suffix does not change the temperature grade; for industrial temperature ranges an N-suffix variant (e.g., EPF10K20RC208-4N) would be required.
What is the on-chip memory of EPF10K20RC208-4?
The EPF10K20RC208-4 contains 12,288 RAM bits of on-chip memory distributed across its embedded array blocks (EABs), per the GlobalSpec and Octopart datasheet extracts. Each EAB can be configured as a small dual-port RAM, ROM, or FIFO and is the FLEX 10K family's distinctive feature compared to non-embedded FPGAs of its era.
What is a drop-in replacement for EPF10K20RC208-4?
A true drop-in replacement for the EPF10K20RC208-4 must share the 208-pin RQFP package, the FLEX 10K bitstream footprint, and 1,152 logic elements. The same-family part EPF10K20RC208-3N is a near-identical -3 speed-grade variant already on the XAIPART site and is the closest same-brand drop-in option in this dataset.
What is the price of EPF10K20RC208-4 as of 2026-09-11?
As of 2026-09-11, the EPF10K20RC208-4 is priced by limited-surplus distributors in the low-twenties USD range for 1-piece purchases, reflecting its obsolete status. Bulk pricing on Octopart shows that even at 100-piece quantities the unit cost remains high because the part is no longer in volume production.
Is EPF10K20RC208-4 RoHS compliant?
The EPF10K20RC208-4 RoHS compliance status is unknown from the verified data; the Altera FLEX 10K datasheet archive does not surface a definitive RoHS certificate in the snippets retrieved. Engineers designing for RoHS-critical applications should request a compliance letter from the distributor before committing to a build.

エンジニアリング参考データ: EPF10K20RC208-4 — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the EPF10K20RC208-4 when you need a 5V-tolerant, 208-pin RQFP FPGA with 1,152 logic elements for legacy 5V bus interfacing, ASIC pre-silicon validation, or industrial control designs where the board already runs at 5V. Choose EPF10K20RC208-3N if the timing margin of the -4 bin is too tight - same silicon and footprint, but a faster -3 speed grade. Choose EPF10K20RC208-4N if your environment requires industrial -40 to +85 °C operation. Migrate to a Cyclone IV or Cyclone 10 LP only if you can redesign the 5V I/O domain, since the FLEX 10K family is obsolete and its bitstream tools are legacy-only.

代替品との比較

パラメータ この製品 EPF10K20RC208-3N EPF10K20RC208-3 EPF10K20RC208-4N
Brand Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera)
Package 208-pin RQFP / 208-BFQFP 208-pin RQFP / 208-BFQFP 208-pin RQFP / 208-BFQFP 208-pin RQFP / 208-BFQFP
Logic Elements 1,152 1,152 1,152 1,152
Typical Gates 20,000 20,000 20,000 20,000
User I/Os 147 147 147 147
Supply Voltage 5 V 5 V 5 V 5 V
Maximum Frequency 125 MHz 125 MHz 125 MHz 125 MHz
Speed Grade -4 -3 -3 -4
Operating Temperature 0 to +70 °C (commercial) 0 to +70 °C (commercial) 0 to +70 °C (commercial) -40 to +85 °C (industrial)

主な差別化要因

  • Lower-density but pin-identical to EPF10K20 family drop-ins (vs EPF10K20RC208-3N)
  • Commercial temperature grade vs industrial -4N option (vs EPF10K20RC208-4N)
  • 5V native I/O vs 3.3V-only newer FPGAs (vs Cyclone series (Intel))

設計ノート

Estimated: the EPF10K20RC208-4 draws VCCINT and VCCIO both from a 5V rail, and at typical toggle rates the datasheet ICC figure can reach several hundred milliamps. Provide at least four VCCINT/VCCIO pins (one per package quadrant) decoupled with 0.1 µF ceramic plus a bulk 47 µF tantalum, and use a wide power plane rather than a thin trace to limit IR drop on the 5 V rail during high-current bursts.

Estimated: with all 1,152 logic elements switching at 125 MHz and 60 % toggle rate, junction temperature can rise 25-35 °C above ambient on a JEDEC 4-layer board without a copper spreader under the exposed pad. Solder the exposed pad to a continuous inner-plane copper pour of at least 1 square inch and add 6-9 thermal vias under the pad to keep junction temperature well below the 125 °C FLEX 10K limit.

Do not assume a 3.3V-only configuration memory will work: the FLEX 10K family is a 5V-only part, and mis-wiring VCCINT to 3.3V will silently corrupt configuration. Also note that MAX+PLUS II and Quartus II (legacy) are the supported design flows - modern Quartus Prime has dropped FLEX 10K device support, so retain a legacy tool installation if you intend to re-synthesize bitstreams.

Route all 147 user I/Os on inner layers if possible, with a continuous ground plane on the layer immediately beneath the device to control simultaneous-switching noise (SSN). Keep 5V VCCIO and 5V VCCINT planes split only if your design requires analog/digital isolation; otherwise tie them together through a wide copper bridge to share decoupling. Place the EPC8 or EPC2 configuration PROM within 2 inches of the FPGA DATA pins to avoid configuration failures on long traces.

コンプライアンス情報

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
鉛フリー
Unknown
ハロゲンフリー
Unknown
紛争鉱物
Unknown

Compliance certifications not surfaced in the datasheet snippets retrieved; the EPF10K20 family predates many modern compliance statements and is obsolete. Request a compliance letter from authorized distributors before using in RoHS-critical applications.

データ検証日: 2026-09-11 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

関連検索

EPF10K20RC208-4 EPF10K20RC208-4 datasheet EPF10K20RC208-4 Altera FLEX 10K FPGA 1152 cells 208 RQFP EPF10K20RC208-4 vs EPF10K20RC208-3N EPF10K20RC208-4 drop-in replacement 5V FPGA 208-pin RQFP Altera FLEX 10K embedded array block EPF10K20RC208-4 buy price EPF10K20RC208-4 pinout where to buy EPF10K20RC208-4 EPF10K20RC208-4 obsolete alternative is EPF10K20RC208-4 still in production FPGA 125 MHz 5V 208 RQFP industrial

関連部品&用語

Intel Altera EPF10K20RC208-4 FLEX 10K FPGA Field-Programmable Gate Array Programmable Logic Device PLD Logic Array Embedded Array Block EAB SRAM-based configuration CMOS 0.42 µm 208-pin RQFP 208-BFQFP 5V supply PCI-compliant I/O JTAG MAX+PLUS II Quartus II configuration PROM EPC8QC100 EPC2TC32 RoHS industrial temperature grade telecommunications line card ASIC prototyping
関連技術ガイド
EPF10K20RC208-4 完全ガイド:FLEX 10K FPGAの仕様、ピン配置、代替品、2026年の調達
EPF10K20RC208-4:Intel/Altera FLEX 10K FPGA、20,000ゲート、1,152 LE、125 MHz、5V、208-RQFP。廃止品。2026-09-12時点で$19.85から在庫あり。
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