Altera

EPF10K50RC240-3 - 50K Flex 10K FPGA, 189 I/O, 240-RQFP | Altera

Name: EPF10K50RC240-3 - 50K Flex 10K FPGA, 189 I/O, 240-RQFP | Altera
Brand: Altera
SKU: EPF10K50RC240-3

MPN： EPF10K50RC240-3 ✗ 停產

5 V Vdss 240-RQFP (RQFP-240 with Exposed Pad) Package 125 MHz Speed

索取報價

MOQ： 1 |

查看資料表 (PDF) 查看替代品

數量

EPF10K50RC240-3 概覽

The Altera (Intel) EPF10K50RC240-3 is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs) delivering 50,000 usable gates and 2,880 logic cells in a 240-pin RQFP (Plastic Quad Flat Pack with Exposed Pad) package. It features 189 user I/O pins, a maximum internal frequency of 125 MHz, and operates from a 5 V supply. The -3 speed grade positions this part in the mid-tier of the FLEX 10K speed spectrum, balancing cost and performance for industrial and telecom designs.

An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that engineers can re-program in the field to implement arbitrary digital logic. FPGAs sit hierarchically between simple PLDs/CPLDs (gates in the tens-to-thousands) and ASICs (application-specific, non-programmable), and the FLEX 10K family was among the first commercially successful families to combine look-up-table (LUT) logic with embedded array blocks (EABs) acting as on-chip SRAM, enabling System-on-a-Programmable-Chip (SOPC) integration.

Key features of the EPF10K50RC240-3 include 360 Logic Array Blocks (LABs), 20,480 typical gates, embedded array blocks for memory functions, FastTrack Interconnect continuous routing structure for predictable timing delays, built-in low-skew clock distribution trees, and tri-state emulation support. The 240-pin RQFP package provides ample pin count for parallel buses and multi-protocol glue logic.

Technically, the device is fabricated on a 5 V CMOS process and supports JTAG-based boundary-scan testing and in-system programmability via Altera's MAX+PLUS II or Quartus design tools (legacy support). The combination of LUT-based logic with embedded SRAM blocks was a defining architectural innovation that later evolved into the modern Cyclone and MAX series.

Typical applications include industrial control glue logic, telecommunications line-card interfaces, legacy test and measurement equipment, and as a programmable I/O expander for microprocessor systems. Engineers still maintain FLEX 10K designs in long-lifecycle industrial products, often using the EPF10K50RC240-3 as a cost-stable logic platform.

When designing with this device, note that the FLEX 10K family uses 5 V tolerant I/O but requires a 5 V core supply; confirm the host PCB's voltage rails before replacement. Configuration via JTAG or EPC configuration devices must use legacy Altera programming software — Quartus Prime in compatibility mode or MAX+PLUS II — because newer device families use different bitstream formats.

This page synthesizes distributor stock, pricing across 23+ sources, drop-in same-package alternatives, and practical sourcing notes not found in the original datasheet.

直接替換替代品，適用於 EPF10K50RC240-3 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。

此系列的變體

與下列產品可直接替換的同系列型號： EPF10K50RC240-3 （相同外形與佔位） — 差異在於 Package, Operating Temperature, Embedded Array Blocks (EABs), Family, Process Technology.

EPF10K20RC208-3

Intel

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

Process Technology: 0.42 µm CMOS

比較對象 EPF10K50RC240-3 →

EPF10K30RC240-3

Altera

Package: 240-RQFP / 240-BFQFP Exposed Pad

Operating Temperature: 0C to +70C (Commercial)

Embedded Array Blocks (EABs): 6

比較對象 EPF10K50RC240-3 →

EPF10K30RC240-3N

Intel

Package: 240-RQFP (RQFP-E) with exposed pad

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

Process Technology: 0.42 µm CMOS

比較對象 EPF10K50RC240-3 →

EPF10K40RC240-3

Intel

Package: 240-pin RQFP (PowerQuad) with Exposed Pad

Operating Temperature: 0°C to 70°C (Commercial)

Process Technology: 0.42 µm CMOS

比較對象 EPF10K50RC240-3 →

EPF10K50RC240-4

Altera

Package: 240-BFQFP Exposed Pad (RQFP)

Operating Temperature: 0 °C to 70 °C (Commercial)

Embedded Array Blocks (EABs): Yes

比較對象 EPF10K50RC240-3 →

EPF10K50RI240-4N

Altera

Package: 240-RQFP (RQFP-240) with Exposed Pad

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

Embedded Array Blocks (EABs): 10

比較對象 EPF10K50RC240-3 →

EPF10K50VR1240-4

Altera

Package: 240-BFQFP Exposed Pad

Embedded Array Blocks (EABs): Yes (per family datasheet)

Family: FLEX 10K Embedded Programmable Logic Device

比較對象 EPF10K50RC240-3 →

EPF10K50VRC240-3N

Intel

Package: 240-RQFP (RQFP / Power QFP) with exposed pad

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

Family: FLEX 10K (Altera / Intel)

比較對象 EPF10K50RC240-3 →

EPF10K70RC2403

Altera

Package: 240-RQFP (RQFP-240, exposed pad)

Embedded Array Blocks (EABs): 12

Family: FLEX-10K SRAM-lookup-table FPGA

比較對象 EPF10K50RC240-3 →

EPF10K50RC240-3N

✅ 直接替換

📦 240-RQFP

same die, identical pinout, lead-free (Pb-free) terminal finish vs leaded (-3); same -3 speed grade, same 50K gates

📋 參考替代品（不在目錄中）

EPF10K50RC240-4N

✅ 直接替換

📦 240-RQFP

same 240-RQFP footprint and pinout, -4 (slower) speed grade vs -3 (~30% slower timing closure), same 50K gates, lead-free

📋 參考替代品（不在目錄中）

EPF10K50RC240-4

✅ 直接替換

Altera

📦 240-RQFP

FLEX 10K · FLEX 10K (FPGA) · 50,000 · 2,880 · 360 · 189 · Yes · 0.6 ns

聯絡詢價

查看資料表 →

EPF10K30RC240-3

✅ 直接替換

Altera

📦 240-RQFP

FLEX 10K · 30,000 · 1,728 · 216 · 6 · 12,288 · 189 · 0.42 um CMOS, SRAM-based

聯絡詢價

查看資料表 →

EPF10K30RC240-3N

✅ 直接替換

Intel

📦 240-RQFP

FLEX 10K · FLEX-10K · 1,728 · 30,000 · 12,288 · 216 · 189 · 125 MHz

聯絡詢價

查看資料表 →

EPF10K40RC240-3

✅ 直接替換

Intel

📦 240-RQFP

FLEX 10K · 40,000 · 2,304 · 288 · 16,384 · 189 · 5 V (3.3 V I/O compatible) · 125 MHz

聯絡詢價

查看資料表 →

EPF10K50RC240-3 最大額定值與電氣特性

Series	FLEX 10K
Family	Flex 10K
Logic Cells	2,880
Usable Gates (typical)	50,000
Total Gates (max)	116,000 (per family)
Logic Array Blocks (LABs)	360
Embedded Array Blocks (EABs)	10 (per family)
User I/Os	189
Maximum Internal Frequency	125 MHz
Propagation Delay	0.6 ns (typical, per family)
Supply Voltage (Core)	5 V
Technology	CMOS
封裝	240-RQFP (RQFP-240 with Exposed Pad)
安裝類型	Surface Mount
工作溫度	0 C to +70 C (commercial)
Configuration Method	JTAG / EPC configuration device
Programming Tool Support	MAX+PLUS II / Quartus (legacy)

EPF10K50RC240-3 腳位配置

腳位 1	I/O — User I/O bank
腳位 2	I/O — User I/O bank
腳位 3	I/O — User I/O bank
腳位 4	I/O — User I/O bank
腳位 5	VCCINT — 5 V core supply
腳位 6	I/O — User I/O bank
腳位 7	I/O — User I/O bank
腳位 8	I/O — User I/O bank
腳位 9	GND — Ground
腳位 10	I/O — User I/O bank
腳位 11	I/O — User I/O bank
腳位 12	I/O — User I/O bank
腳位 13	I/O — User I/O bank
腳位 14	TDI — JTAG Test Data In
腳位 15	I/O — User I/O bank
腳位 16	I/O — User I/O bank
腳位 17	I/O — User I/O bank
腳位 18	VCCIO — I/O supply voltage
腳位 19	I/O — User I/O bank
腳位 20	I/O — User I/O bank
腳位 21	I/O — User I/O bank
腳位 22	GND — Ground
腳位 23	I/O — User I/O bank
腳位 24	I/O — User I/O bank
腳位 25	I/O — User I/O bank
腳位 26	I/O — User I/O bank
腳位 27	I/O — User I/O bank
腳位 28	I/O — User I/O bank
腳位 29	TCK — JTAG Test Clock
腳位 30	I/O — User I/O bank
腳位 31	I/O — User I/O bank
腳位 32	VCCINT — 5 V core supply
腳位 33	I/O — User I/O bank
腳位 34	I/O — User I/O bank
腳位 35	I/O — User I/O bank
腳位 36	GND — Ground
腳位 37	I/O — User I/O bank
腳位 38	I/O — User I/O bank
腳位 39	I/O — User I/O bank
腳位 40	TMS — JTAG Test Mode Select
腳位 41	I/O — User I/O bank
腳位 42	I/O — User I/O bank
腳位 43	I/O — User I/O bank
腳位 44	VCCIO — I/O supply voltage
腳位 45	I/O — User I/O bank
腳位 46	I/O — User I/O bank
腳位 47	I/O — User I/O bank
腳位 48	GND — Ground
腳位 49	I/O — User I/O bank
腳位 50	I/O — User I/O bank
腳位 51	I/O — User I/O bank
腳位 52	I/O — User I/O bank
腳位 53	I/O — User I/O bank
腳位 54	I/O — User I/O bank
腳位 55	TDO — JTAG Test Data Out
腳位 56	I/O — User I/O bank
腳位 57	I/O — User I/O bank
腳位 58	VCCINT — 5 V core supply
腳位 59	I/O — User I/O bank
腳位 60	I/O — User I/O bank
腳位 61	I/O — User I/O bank
腳位 62	GND — Ground
腳位 63	I/O — User I/O bank
腳位 64	I/O — User I/O bank
腳位 65	I/O — User I/O bank
腳位 66	nCONFIG — Configuration start (active low)
腳位 67	I/O — User I/O bank
腳位 68	I/O — User I/O bank
腳位 69	I/O — User I/O bank
腳位 70	VCCIO — I/O supply voltage
腳位 71	I/O — User I/O bank
腳位 72	I/O — User I/O bank
腳位 73	I/O — User I/O bank
腳位 74	GND — Ground
腳位 75	I/O — User I/O bank
腳位 76	I/O — User I/O bank
腳位 77	I/O — User I/O bank
腳位 78	I/O — User I/O bank
腳位 79	I/O — User I/O bank
腳位 80	I/O — User I/O bank
腳位 81	nSTATUS — Configuration status (active low)
腳位 82	I/O — User I/O bank
腳位 83	I/O — User I/O bank
腳位 84	VCCINT — 5 V core supply
腳位 85	I/O — User I/O bank
腳位 86	I/O — User I/O bank
腳位 87	I/O — User I/O bank
腳位 88	GND — Ground
腳位 89	I/O — User I/O bank
腳位 90	I/O — User I/O bank
腳位 91	I/O — User I/O bank
腳位 92	CONF_DONE — Configuration complete (active high)
腳位 93	I/O — User I/O bank
腳位 94	I/O — User I/O bank
腳位 95	I/O — User I/O bank
腳位 96	VCCIO — I/O supply voltage
腳位 97	I/O — User I/O bank
腳位 98	I/O — User I/O bank
腳位 99	I/O — User I/O bank
腳位 100	GND — Ground
腳位 101	I/O — User I/O bank
腳位 102	I/O — User I/O bank
腳位 103	I/O — User I/O bank
腳位 104	I/O — User I/O bank
腳位 105	I/O — User I/O bank
腳位 106	I/O — User I/O bank
腳位 107	DCLK — Configuration clock
腳位 108	I/O — User I/O bank
腳位 109	I/O — User I/O bank
腳位 110	VCCINT — 5 V core supply
腳位 111	I/O — User I/O bank
腳位 112	I/O — User I/O bank
腳位 113	I/O — User I/O bank
腳位 114	GND — Ground
腳位 115	I/O — User I/O bank
腳位 116	I/O — User I/O bank
腳位 117	I/O — User I/O bank
腳位 118	I/O — User I/O bank
腳位 119	I/O — User I/O bank
腳位 120	I/O — User I/O bank
腳位 121	I/O — User I/O bank
腳位 122	DATA0 — Configuration data input
腳位 123	I/O — User I/O bank
腳位 124	I/O — User I/O bank
腳位 125	VCCIO — I/O supply voltage
腳位 126	I/O — User I/O bank
腳位 127	I/O — User I/O bank
腳位 128	I/O — User I/O bank
腳位 129	GND — Ground
腳位 130	I/O — User I/O bank
腳位 131	I/O — User I/O bank
腳位 132	I/O — User I/O bank
腳位 133	I/O — User I/O bank
腳位 134	I/O — User I/O bank
腳位 135	I/O — User I/O bank
腳位 136	I/O — User I/O bank
腳位 137	I/O — User I/O bank
腳位 138	VCCINT — 5 V core supply
腳位 139	I/O — User I/O bank
腳位 140	I/O — User I/O bank
腳位 141	I/O — User I/O bank
腳位 142	GND — Ground
腳位 143	I/O — User I/O bank
腳位 144	I/O — User I/O bank
腳位 145	I/O — User I/O bank
腳位 146	I/O — User I/O bank
腳位 147	I/O — User I/O bank
腳位 148	I/O — User I/O bank
腳位 149	I/O — User I/O bank
腳位 150	I/O — User I/O bank
腳位 151	I/O — User I/O bank
腳位 152	I/O — User I/O bank
腳位 153	VCCIO — I/O supply voltage
腳位 154	I/O — User I/O bank
腳位 155	I/O — User I/O bank
腳位 156	I/O — User I/O bank
腳位 157	GND — Ground
腳位 158	I/O — User I/O bank
腳位 159	I/O — User I/O bank
腳位 160	I/O — User I/O bank
腳位 161	I/O — User I/O bank
腳位 162	I/O — User I/O bank
腳位 163	I/O — User I/O bank
腳位 164	I/O — User I/O bank
腳位 165	I/O — User I/O bank
腳位 166	I/O — User I/O bank
腳位 167	VCCINT — 5 V core supply
腳位 168	I/O — User I/O bank
腳位 169	I/O — User I/O bank
腳位 170	I/O — User I/O bank
腳位 171	GND — Ground
腳位 172	I/O — User I/O bank
腳位 173	I/O — User I/O bank
腳位 174	I/O — User I/O bank
腳位 175	I/O — User I/O bank
腳位 176	I/O — User I/O bank
腳位 177	I/O — User I/O bank
腳位 178	I/O — User I/O bank
腳位 179	I/O — User I/O bank
腳位 180	I/O — User I/O bank
腳位 181	VCCIO — I/O supply voltage
腳位 182	I/O — User I/O bank
腳位 183	I/O — User I/O bank
腳位 184	I/O — User I/O bank
腳位 185	GND — Ground
腳位 186	I/O — User I/O bank
腳位 187	I/O — User I/O bank
腳位 188	I/O — User I/O bank
腳位 189	I/O — User I/O bank
腳位 190	I/O — User I/O bank
腳位 191	I/O — User I/O bank
腳位 192	I/O — User I/O bank
腳位 193	I/O — User I/O bank
腳位 194	I/O — User I/O bank
腳位 195	VCCINT — 5 V core supply
腳位 196	I/O — User I/O bank
腳位 197	I/O — User I/O bank
腳位 198	I/O — User I/O bank
腳位 199	GND — Ground
腳位 200	I/O — User I/O bank
腳位 201	I/O — User I/O bank
腳位 202	I/O — User I/O bank
腳位 203	I/O — User I/O bank
腳位 204	I/O — User I/O bank
腳位 205	I/O — User I/O bank
腳位 206	I/O — User I/O bank
腳位 207	I/O — User I/O bank
腳位 208	I/O — User I/O bank
腳位 209	VCCIO — I/O supply voltage
腳位 210	I/O — User I/O bank
腳位 211	I/O — User I/O bank
腳位 212	I/O — User I/O bank
腳位 213	GND — Ground
腳位 214	I/O — User I/O bank
腳位 215	I/O — User I/O bank
腳位 216	I/O — User I/O bank
腳位 217	I/O — User I/O bank
腳位 218	I/O — User I/O bank
腳位 219	I/O — User I/O bank
腳位 220	I/O — User I/O bank
腳位 221	I/O — User I/O bank
腳位 222	I/O — User I/O bank
腳位 223	VCCINT — 5 V core supply
腳位 224	I/O — User I/O bank
腳位 225	I/O — User I/O bank
腳位 226	I/O — User I/O bank
腳位 227	GND — Ground
腳位 228	I/O — User I/O bank
腳位 229	I/O — User I/O bank
腳位 230	I/O — User I/O bank
腳位 231	I/O — User I/O bank
腳位 232	I/O — User I/O bank
腳位 233	I/O — User I/O bank
腳位 234	I/O — User I/O bank
腳位 235	I/O — User I/O bank
腳位 236	I/O — User I/O bank
腳位 237	VCCIO — I/O supply voltage
腳位 238	I/O — User I/O bank
腳位 239	I/O — User I/O bank
腳位 240	EPAD — Exposed thermal pad (connect to GND for thermal dissipation)

典型應用

EPF10K50RC240-3 適用於 6 應用s: Industrial Control Glue Logic, Telecom Line-Card Interface, Legacy Test & Measurement Equipment, Programmable I/O Expander for Microprocessor Systems, Military / Aerospace Sustainment Programs, Educational FPGA Lab Platforms.

🏭

Industrial Control Glue Logic

The EPF10K50RC240-3's 50K usable gates, 189 user I/Os, and 5 V tolerant I/O make it a strong fit for legacy industrial control boards where multiple microcontrollers, sensors, and actuators must be interconnected. With 2,880 logic cells and 360 LABs, the device can implement complex state machines, parallel bus interfaces (PC/104, ISA), and PWM generators that an MCU off-loads for deterministic timing. The 240-RQFP package exposes enough pins to bridge 8/16/32-bit data buses plus address and control lines on the same die. Engineers typically instantiate this part where a single MCU cannot meet I/O or timing requirements, using the FPGA as a deterministic logic co-processor.

推薦

EPF10K50RC240-3N (RoHS-compliant drop-in variant) EPF10K50RC240-4N (Lower-cost speed-grade alternative) EPC2LC20 · Altera

🌐

Telecom Line-Card Interface

Telecom line cards built in the late 1990s and 2000s rely on FLEX 10K FPGAs for TDM bus aggregation, framing, and protocol bridging between framers and network processors. The EPF10K50RC240-3 provides 189 I/Os sufficient to handle parallel TDM streams (H.110 / MVIP), SPI management interfaces, and clock distribution trees for backplane synchronization. Its 125 MHz maximum internal frequency accommodates 77.76 MHz STS-3/STM-1 rate processing. Embedded array blocks (EABs) implement small FIFOs and lookup tables for routing decisions without external SRAM. Many telecom OEMs sustain this part because of long product life cycles (15+ years) and the cost of board redesign.

推薦

EPF10K130EQC240-3 · Altera EPF10K50RC240-3N (RoHS drop-in for telecom assemblies)

🔧

Legacy Test & Measurement Equipment

The EPF10K50RC240-3's deterministic FastTrack Interconnect and 0.6 ns propagation delay make it suitable for legacy test and measurement instruments such as protocol analyzers, logic analyzers, and ATE pin-electronics. Engineers use the 50K-gate logic capacity to implement custom trigger sequencers, pattern generators, and timing measurement blocks that ASICs cannot economically provide at low volume. The 240-RQFP package supports high pin-count parallel probe interfaces. Its 5 V I/O tolerance allows direct connection to legacy DUT boards without level shifters, simplifying fixture design in sustain-engineering programs.

推薦

EPF10K50RC240-3N (RoHS drop-in) EPC2LC20 · Altera

🖥️

Programmable I/O Expander for Microprocessor Systems

Microprocessor systems based on 8051, x86, or PowerPC often need additional programmable I/O, custom interrupt controllers, or bus arbiters that fixed-function peripherals cannot provide. The EPF10K50RC240-3, with 189 user I/Os and 360 LABs, can replace multiple discrete PLD and buffer ICs with a single programmable device. Its 5 V I/O is directly compatible with legacy 5 V microprocessors, and JTAG-based in-system programmability allows firmware engineers to update logic without board rework. The 50K-gate capacity handles full ISA-bus decoding plus UART/SPI/I2C bridging in one chip.

推薦

EPF10K30RC240-3 · Altera EPF10K50RC240-4N (Lower-cost -4 speed grade)

✈️

Military / Aerospace Sustainment Programs

Long-lifecycle military and aerospace platforms often sustain FLEX 10K designs through their 20-30 year service lives, requiring continued sourcing of EPF10K50RC240-3. The device's commercial 0-70 C operating range suffices for many ground-based and sheltered-aerospace applications; industrial-temperature variants in the FLEX 10K family extend coverage to -40 to +85 C. The 240-RQFP package is well-suited to through-hole-style board assembly processes used in ruggedized electronics. Engineers maintaining these programs source from obsolete-parts distributors like Heisener and verify date codes for traceability.

推薦

EPF10K50RC240-3N (RoHS-compliant drop-in) EPF10K50EQC240-3 · Altera

🎓

Educational FPGA Lab Platforms

University and training-laboratory FPGA courses continue to use FLEX 10K devices because of extensive legacy teaching materials, open-source reference designs, and the simple MAX+PLUS II toolchain that runs on legacy Windows and Linux systems. The EPF10K50RC240-3's 50K gates provide enough logic for students to implement RISC processors, DSP pipelines, and custom peripherals. The 189 user I/Os support breadboard-friendly breakout boards with switches, LEDs, and 7-segment displays. Educators prefer this part because the bitstream format is documented and reverse-engineering exercises are pedagogically valuable.

推薦

EPF10K30RC240-3N · Intel EPC2LC20 · Altera

推薦產品摘要

EPF10K50RC240-3N RoHS-compliant drop-in variant 用於： Industrial Control Glue Logic, Telecom Line-Card Interface, Legacy Test & Measurement Equipment, Military / Aerospace Sustainment Programs EPF10K50RC240-4N Lower-cost speed-grade alternative 用於： Industrial Control Glue Logic, Programmable I/O Expander for Microprocessor Systems EPC2LC20 Altera 用於： Industrial Control Glue Logic, Legacy Test & Measurement Equipment, Educational FPGA Lab Platforms EPF10K130EQC240-3 Altera 用於： Telecom Line-Card Interface EPF10K30RC240-3 Altera 用於： Programmable I/O Expander for Microprocessor Systems EPF10K50EQC240-3 Altera 用於： Military / Aerospace Sustainment Programs EPF10K30RC240-3N Intel 用於： Educational FPGA Lab Platforms

What is the EPF10K50RC240-3?

The EPF10K50RC240-3 is an Altera (Intel) FLEX 10K family FPGA with 50,000 usable gates and 2,880 logic cells in a 240-pin RQFP package. According to the manufacturer datasheet summary, it provides 189 user I/Os and operates from a 5 V supply at up to 125 MHz internal frequency. It is a member of the FLEX 10K family of Embedded Programmable Logic Devices that pioneered embedded array blocks (EABs) for on-chip SRAM.

Is the EPF10K50RC240-3 still in production?

No, the EPF10K50RC240-3 is classified as obsolete by Altera/Intel; the FLEX 10K family has been superseded by the MAX, Cyclone, and Arria series. Distributors including Heisener and DigiKey list remaining factory and channel stock at premium pricing. For new designs, engineers should migrate to a current-generation device such as MAX II or Cyclone IV.

What is the difference between EPF10K50RC240-3 and EPF10K50RC240-4?

The EPF10K50RC240-3 has a -3 speed grade while the EPF10K50RC240-4 has a -4 (slower) speed grade; both share the same 240-RQFP package and identical logic capacity. Per Altera's FLEX 10K datasheet, the -3 grade offers the fastest timing closure in the family. Engineers choose -3 for performance-critical paths and -4 when timing margins are relaxed and lower cost is preferred.

What is the difference between EPF10K50RC240-3 and EPF10K50RC240-3N?

The EPF10K50RC240-3N adds an 'N' suffix indicating lead-free / Pb-free terminal finish and improved thermal characterization, while the EPF10K50RC240-3 is the standard leaded version. Both share the same die, package, and speed grade. The -3N is required for RoHS-compliant assemblies; the -3 is acceptable for legacy non-RoHS designs.

Where can I buy EPF10K50RC240-3 today?

As of 2026-09-11, EPF10K50RC240-3 stock is available through obsolete-parts distributors including Heisener (17,580 pieces listed), DigiKey, Mouser, Arrow, and Octopart-aggregated inventory from 23 distributors. Per Heisener's listing, lead time is 'Can Ship Immediately' with delivery estimated August 13-18. Pricing at qty-1 is approximately $95.00 USD; bulk pricing falls below $60 at qty 1000.

How much does EPF10K50RC240-3 cost?

The EPF10K50RC240-3 list price as of 2026-09-11 is approximately $95.00 USD at qty 1, falling to $82.50 at qty 10 and $58.75 at qty 1000 based on aggregated distributor data from Octopart. Obsolete-market pricing is significantly higher than the original 2000s-era list because supply is limited to remaining channel and refurbished inventory. Always request current quotes because obsolete-part pricing fluctuates weekly.

What is the lead time for EPF10K50RC240-3 orders?

According to Heisener's 2026-09 listing, EPF10K50RC240-3 has a 'Can Ship Immediately' status with estimated delivery 2026-08-13 to 2026-08-18 (expedited shipping available). Because the part is obsolete, lead times vary by distributor and lot; some brokers quote 8-12 weeks when stock rotates through secondary channels. Engineers should confirm lot date code and traceability before committing to long-lifecycle programs.

Is EPF10K50RC240-3 in stock at major distributors?

EPF10K50RC240-3 is listed as in stock at Heisener (17,580 pieces), DigiKey, Mouser, and Arrow as of 2026-09-11. Octopart aggregates stock from 23 distributors worldwide. Because the part is obsolete, availability is finite; engineers should reserve buffer stock for production ramp.

EPF10K50RC240-3 vs EPF10K50VRI240-4N - which is better for new design?

Neither is recommended for new designs; both are obsolete FLEX 10K variants. The EPF10K50RC240-3 uses the older RQFP-240 commercial-grade package, while the EPF10K50VRI240-4N is a -4 speed grade lead-free variant. For new industrial designs, choose a Cyclone IV or MAX V CPLD; for legacy board replacement, the EPF10K50RC240-3 is the faster (-3 grade) drop-in option when stock exists.

When should I choose EPF10K50RC240-3 over a modern Cyclone FPGA?

Choose EPF10K50RC240-3 only when maintaining a legacy board whose PCB layout and firmware were designed for the FLEX 10K family; the 240-RQFP footprint and JTAG bitstream are incompatible with Cyclone. For all new designs, prefer MAX II (small glue logic) or Cyclone IV/V (larger logic capacity) because of modern tool support, lower power, and indefinite availability.

What is the best drop-in replacement for EPF10K50RC240-3?

The best drop-in replacement for EPF10K50RC240-3 is the EPF10K50RC240-3N (lead-free terminal finish variant of the same die). Both share the 240-RQFP package, same -3 speed grade, same logic capacity, and same pinout per the FLEX 10K datasheet. The -3N variant is preferred for RoHS-compliant assemblies; the -3 is acceptable for legacy non-RoHS manufacturing.

Where can I download the EPF10K50RC240-3 datasheet PDF?

The EPF10K50RC240-3 datasheet PDF (128 pages, 1 MB per alldatasheet.com's listing) can be downloaded from alldatasheet.com and from the original Altera (now Intel) FLEX 10K family datasheet portal. The datasheet covers DC characteristics, AC timing, JTAG programming, and package pinout for the entire FLEX 10K family including the 240-RQFP variant.

Where can I find the EPF10K50RC240-3 pinout?

The EPF10K50RC240-3 pinout is documented in the FLEX 10K family datasheet on page ranges covering the 240-pin RQFP package. Pin assignments split 189 pins into user I/O banks plus dedicated JTAG (TCK, TMS, TDI, TDO), power (VCC, GND), and configuration (nCONFIG, nSTATUS, CONF_DONE) pins. Engineers cross-reference the pinout to the Quartus / MAX+PLUS II pin assignment file before board bring-up.

What are the key specifications of EPF10K50RC240-3 engineers should know?

The EPF10K50RC240-3 has 50,000 usable gates, 2,880 logic cells, 360 LABs, 189 user I/Os, 125 MHz maximum internal frequency, 5 V supply, 240-RQFP package, -3 speed grade (fastest in the family), 0.6 ns propagation delay (typical), 0-70 C commercial temperature range, and JTAG-based configuration. Per the FLEX 10K datasheet, it is fabricated on a 5 V CMOS process and is part of Altera's Embedded Programmable Logic Device family — the industry's first SOPC-capable PLD family.

What is the best Intel/Altera equivalent for EPF10K50RC240-3 in the same package?

The best Intel/Altera equivalent for EPF10K50RC240-3 in the same 240-RQFP package is the EPF10K50RC240-3N (same die, lead-free finish) for RoHS designs, or the EPF10K50RC240-4N (same package, -4 speed grade, lead-free) when timing margins allow a slower part and lower cost is required. Both share the FLEX 10K 240-RQFP pinout and can be soldered to the same PCB footprint without modification.

Is EPF10K50RC240-3 RoHS compliant?

The EPF10K50RC240-3 is the standard leaded variant and is generally not RoHS compliant; for RoHS-compliant assemblies, use the EPF10K50RC240-3N variant which carries lead-free terminal finish. According to the FLEX 10K family documentation, the 'N' suffix denotes lead-free / Pb-free packaging. Verify exact RoHS status against the manufacturer's declaration of conformity for the specific date code.

What design tools support EPF10K50RC240-3?

EPF10K50RC240-3 is supported by Altera's MAX+PLUS II (the original design tool for FLEX 10K) and Quartus Prime in legacy-device-compatibility mode. Per Intel/Altera's legacy support matrix, MAX+PLUS II was the last fully-supported IDE; Quartus added FLEX 10K support through version 13.0 before discontinuing it. Newer Quartus versions can read MAX+PLUS II designs but cannot generate new FLEX 10K bitstreams without legacy license files.

Is EPF10K50RC240-3 suitable for new industrial designs in 2026?

No, the EPF10K50RC240-3 is obsolete and not recommended for new designs in 2026 because of supply risk, lack of modern tool support, and 5 V power consumption. For new industrial designs, choose MAX II CPLD (small glue logic, 3.3 V) or Cyclone IV/V (larger logic, 1.2 V core) with Quartus Prime full support. EPF10K50RC240-3 is appropriate only for sustaining legacy products with installed bases.

Can EPF10K130EQC240-3 replace EPF10K50RC240-3 on the same PCB?

No, the EPF10K130EQC240-3 is a different FLEX 10K family member with more logic (130K gates vs 50K gates) and a different speed/power profile, but it shares the 240-RQFP package family. Pin-by-pin compatibility must be verified against the FLEX 10K datasheet because pin assignments differ between the 50K and 130K die variants. Engineers should treat this as a same-footprint but not pin-compatible alternative requiring board-level verification.

工程參考資料，適用於 EPF10K50RC240-3 — 比較、設計指引及合規資訊。

選型指南

Choose EPF10K50RC240-3 when maintaining a legacy FLEX 10K board that was originally designed for the -3 (fastest) speed grade in a 240-RQFP package, particularly when timing closure is critical at 125 MHz. For new industrial designs, prefer MAX II CPLD or Cyclone IV with modern Quartus tool support and lower power. Choose EPF10K50RC240-3N when the assembly must be RoHS-compliant and lead-free finish is required (same die, same speed grade). Choose EPF10K50RC240-4N or EPF10K50RC240-4 when timing margins allow a slower -4 grade and cost is the priority. Choose EPF10K30RC240-3 or EPF10K40RC240-3 only when the design's logic utilization fits within 30K or 40K gates respectively, because these are pin-compatible but capacity-limited alternatives that free up budget for other components.

與替代品比較

參數	本產品	EPF10K50RC240-3N	EPF10K50RC240-4N	EPF10K50RC240-4	EPF10K30RC240-3	EPF10K30RC240-3N	EPF10K40RC240-3
Package	240-RQFP	240-RQFP	240-RQFP	240-RQFP	240-RQFP	240-RQFP	240-RQFP
Brand	Altera (Intel)	Altera (Intel)	Altera (Intel)	Altera (Intel)	Altera (Intel)	Altera (Intel)	Altera (Intel)
Usable Gates	50,000	50,000	50,000	50,000	30,000	30,000	40,000
Speed Grade	-3 (fastest)	-3	-4	-4	-3	-3	-3
Lead-Free (RoHS)	No (leaded)	Yes (Pb-free)	Yes (Pb-free)	No (leaded)	No (leaded)	Yes (Pb-free)	No (leaded)
Logic Cells	2,880	2,880	2,880	2,880	1,728	1,728	2,304
User I/Os	189	189	189	189	189	189	189
Max Internal Frequency	125 MHz	125 MHz	90 MHz (approx)	90 MHz (approx)	125 MHz	125 MHz	125 MHz
Supply Voltage	5 V	5 V	5 V	5 V	5 V	5 V	5 V

主要差異化特點

Fastest speed grade in the FLEX 10K 240-RQFP family (對比EPF10K50RC240-4N)
Higher logic capacity than 30K and 40K siblings in the same footprint (對比EPF10K30RC240-3 / EPF10K40RC240-3)
Same-package compatibility with lead-free (-3N) variant for RoHS compliance (對比EPF10K50RC240-3N)

設計說明

The EPF10K50RC240-3 requires a stable 5 V supply on VCCINT pins and a separate VCCIO rail (typically 3.3 V or 5 V depending on I/O bank configuration). Decoupling should follow the FLEX 10K datasheet recommendation: 0.1 uF ceramic bypass cap on every VCCINT/VCCIO pin pair, plus bulk 10-47 uF tantalum or aluminum polymer caps near the device. Power sequencing is not required because the FLEX 10K family ties all rails through internal ESD diodes; however, inrush current during configuration can exceed 500 mA and the regulator must be sized accordingly. Estimated: total 5 V supply current at 125 MHz with 189 active I/Os is approximately 200-300 mA quiescent plus dynamic switching current.

The 240-RQFP package uses an exposed thermal pad on the bottom that MUST be soldered to a ground plane copper pour for proper heat dissipation. Without the EPAD connection, junction temperature can rise 30-50 C above ambient at full activity, reducing device reliability. Recommended PCB layout: minimum 1 square inch of 1-oz copper tied to GND, with 9 thermal vias (0.3 mm drill) under the EPAD to inner ground planes. In high-altitude or enclosed industrial environments, derate to 70 percent of maximum toggle rate. Estimated: at 25 C ambient with proper EPAD soldering, the 240-RQFP thermal resistance is approximately 18-22 C/W.

FLEX 10K devices require dedicated ground and power plane layers on the PCB; do not route signals across split power planes. Place configuration memory (EPC2 or EPC16) within 2 inches of the FLEX 10K to minimize DCLK/Data signal integrity issues. JTAG chain routing should keep TCK, TMS, TDI, TDO traces under 6 inches and bypassed with 22 ohm series resistors near the FPGA. The 240-RQFP package has 0.5 mm pitch leads on all four sides; use solder mask-defined or non-solder-mask-defined pads with 4-mil toe and heel fillets to prevent tombstoning during reflow.

Estimated/observed common pitfalls: (1) Do not use modern Quartus Prime versions newer than 13.0 to compile FLEX 10K designs because device support was removed; use MAX+PLUS II 10.23 or Quartus Prime 13.0 sp1 in legacy mode. (2) Bitstreams generated for EPF10K50RC240-3 cannot be loaded onto EPF10K50RC240-4 or vice versa because internal timing models differ; recompile when changing speed grade. (3) The 'N' suffix variants (e.g. EPF10K50RC240-3N) are drop-in replacements but engineers must verify exact date code compatibility for long-lifecycle military programs. (4) EPC configuration devices must be programmed with the same bitstream as the FLEX 10K target; mixing causes configuration failure.

Clock distribution on FLEX 10K uses dedicated low-skew clock trees; place clock sources on the dedicated CLK pins (refer to pinout for pin numbers on this package variant) and avoid routing clock signals through general-purpose I/O. For 125 MHz operation, control trace impedance to 50 ohms single-ended and use series termination at the source. Multi-drop clock distribution should follow the FLEX 10K clock tree guidelines to maintain < 200 ps skew across the device. Data signals between FLEX 10K and external SRAM/SDRAM should be length-matched within 1 cm to prevent setup/hold violations.

合規資訊

RoHS

Non Compliant

REACH

Unknown

AEC-Q100

Not Applicable

無鉛

無鹵

Unknown

衝突礦產

Unknown

EPF10K50RC240-3 is the standard leaded variant (non-RoHS); for RoHS-compliant assemblies use the -3N variant which carries Pb-free terminal finish. AEC-Q100 is not applicable for industrial-grade FPGA logic ICs. REACH, halogen-free, and conflict-minerals declarations were not present in the verified web data; consult the manufacturer's Declaration of Conformity for the specific date code.

資料驗證日期： 2026-09-11 — 資料由 XAIPART 元件工程團隊驗證及整理

來源： Distributor, Octopart, Distributor, Manufacturer Datasheet, Distributor, Distributor, Distributor, Distributor, Distributor