Altera
EPF8820ARI208-4 - FLEX 8000 FPGA, 8K Gates, 5V, 208-RQFP | Intel / Altera
MPN: EPF8820ARI208-4 ✗ پایان تولید
5 V Vdss
208-pin RQFP (RQFP-208) Package
125 MHz Speed
حداقل سفارش: 1 |
EPF8820ARI208-4 نمای کلی
The Intel / Altera EPF8820ARI208-4 is a member of the FLEX 8000 family of SRAM-based, in-system programmable CMOS FPGAs, integrating approximately 8,000 usable gates, 672 logic cells, and 820 flip-flops into a 208-pin ceramic RQFP package rated for industrial temperature operation. It is fabricated on a 0.42 µm CMOS process and operates at a nominal 5 V supply (4.5 V to 5.5 V) with configurable I/O that supports either 3.3 V or 5 V interface levels, allowing direct bridging between legacy 5 V buses and modern 3.3 V peripherals. The device delivers up to 125 MHz internal performance and uses Altera's patented FastTrack Interconnect architecture with continuous, predictable routing delays that simplify static timing closure.
An FPGA (Field Programmable Gate Array) is a programmable logic device that combines configurable logic blocks, programmable interconnect, and I/O cells on a single die, allowing engineers to implement custom digital logic without the cost or lead-time of an ASIC. The FLEX 8000 family sits within the hierarchy of programmable logic devices (PLD) and specifically within the SRAM-based FPGA segment - it is volatile and must be configured from an external EPROM, Flash, or microcontroller on every power-up. This makes FLEX 8000 parts well suited to prototyping, low-volume designs, and systems requiring in-system updates via JTAG.
Key features of the EPF8820ARI208-4 include a high-density interconnect structure with four row- and column-based interconnect channels, multi-level routing resources (direct, local, row, and column), and built-in JTAG boundary-scan (IEEE Std 1149.1) for board-level testability. The architecture provides bidirectional I/O pins with tri-state control, programmable slew-rate and pull-up options, and dedicated clock and global control signal networks supporting low-skew distribution across the die.
Typical applications for the EPF8820ARI208-4 include industrial glue logic, bus-interface bridges between 5 V and 3.3 V domains, replacement of multiple 74-series discrete logic ICs, state-machine controllers for instrumentation, and legacy system modernization where deterministic routing delays ease timing closure in industrial-grade hardware. Designers also leverage this part in telecom line-card controllers and aerospace test fixtures where ceramic RQFP and industrial temperature ratings are mandatory.
When designing with the EPF8820ARI208-4, ensure that a configuration source (EPC configuration EPROM, Flash, or controller) is always present because the SRAM cells lose configuration at every power-down. JTAG signals TCK, TMS, TDI, and TDO must be pulled correctly per IEEE 1149.1, and unused I/O pins should be set to tri-state to minimize supply noise. Ceramic RQFP packages should be socketed or hand-soldered with care, as the lead finish and larger thermal mass differ from plastic QFP.
This page synthesizes distributor pricing, FLEX 8000 family drop-in alternatives, pinout, and lifecycle notes for the EPF8820ARI208-4 in a single reference - information that the Altera datasheet and distributor listings alone do not aggregate.
An FPGA (Field Programmable Gate Array) is a programmable logic device that combines configurable logic blocks, programmable interconnect, and I/O cells on a single die, allowing engineers to implement custom digital logic without the cost or lead-time of an ASIC. The FLEX 8000 family sits within the hierarchy of programmable logic devices (PLD) and specifically within the SRAM-based FPGA segment - it is volatile and must be configured from an external EPROM, Flash, or microcontroller on every power-up. This makes FLEX 8000 parts well suited to prototyping, low-volume designs, and systems requiring in-system updates via JTAG.
Key features of the EPF8820ARI208-4 include a high-density interconnect structure with four row- and column-based interconnect channels, multi-level routing resources (direct, local, row, and column), and built-in JTAG boundary-scan (IEEE Std 1149.1) for board-level testability. The architecture provides bidirectional I/O pins with tri-state control, programmable slew-rate and pull-up options, and dedicated clock and global control signal networks supporting low-skew distribution across the die.
Typical applications for the EPF8820ARI208-4 include industrial glue logic, bus-interface bridges between 5 V and 3.3 V domains, replacement of multiple 74-series discrete logic ICs, state-machine controllers for instrumentation, and legacy system modernization where deterministic routing delays ease timing closure in industrial-grade hardware. Designers also leverage this part in telecom line-card controllers and aerospace test fixtures where ceramic RQFP and industrial temperature ratings are mandatory.
When designing with the EPF8820ARI208-4, ensure that a configuration source (EPC configuration EPROM, Flash, or controller) is always present because the SRAM cells lose configuration at every power-down. JTAG signals TCK, TMS, TDI, and TDO must be pulled correctly per IEEE 1149.1, and unused I/O pins should be set to tri-state to minimize supply noise. Ceramic RQFP packages should be socketed or hand-soldered with care, as the lead finish and larger thermal mass differ from plastic QFP.
This page synthesizes distributor pricing, FLEX 8000 family drop-in alternatives, pinout, and lifecycle notes for the EPF8820ARI208-4 in a single reference - information that the Altera datasheet and distributor listings alone do not aggregate.
جایگزینهای drop-in برای EPF8820ARI208-4 — همان پکیج، سازگار پینبهپین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونهها در این سری
مدلهای همسری که جایگزین مستقیم هستند برای EPF8820ARI208-4 (همان فرمفاکتور و فوتپرینت) — متفاوت در Package, Process Technology, Usable Gates, Configuration Method, Speed Grade.
Altera
Process Technology: CMOS, 0.5 um (5 V SRAM-based)
Usable Gates: 8,000 (up to 16,000 with utilization)
Speed Grade: -4
مقایسه با EPF8820ARI208-4 →
Altera
Package: 208-RQFP / BFQFP with exposed pad
Process Technology: 0.42 µm CMOS
Usable Gates: 8,000
مقایسه با EPF8820ARI208-4 →
Altera
Package: 208-pin RQFP (RFI)
Usable Gates: 8,000 (typical)
Speed Grade: -2
مقایسه با EPF8820ARI208-4 →
Altera
Package: 208-pin RQFP (Plastic Quad Flat Pack)
Usable Gates: 8,820
Configuration Method: Passive serial / JTAG / Altera EPC configuration device
مقایسه با EPF8820ARI208-4 →
Altera
Package: 208-pin PQFP (Plastic Quad Flat Pack)
Process Technology: CMOS (SRAM-based configuration)
Configuration Method: SRAM (requires external config device)
مقایسه با EPF8820ARI208-4 →
Intel
Package: 208-pin PQFP / RQFP (gull-wing)
Process Technology: CMOS (SRAM-based configuration)
Configuration Method: Serial (PS / passive serial) or ByteBlaster JTAG
مقایسه با EPF8820ARI208-4 →
Altera
Package: 208-pin Plastic Quad Flatpack (RQFP / PQFP), 0.5 mm pitch, gull-wing
Process Technology: 0.42 um CMOS, SRAM-based
Usable Gates: 8,000
مقایسه با EPF8820ARI208-4 →
Altera
Package: 208-pin RQFP (Power Quad Flat Pack)
Process Technology: 0.42 µm CMOS
مقایسه با EPF8820ARI208-4 →
EPF8820ARI208-3
✅ جایگزین مستقیمAltera
📦 208-pin RQFP
FLEX 8000 · FPGA (Field-Programmable Gate Array) · 672 · 152 · 4 · 208-pin PQFP (Plastic Quad Flat Pack) · HFQFP (PQFP208) · Gull Wing
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-3N
✅ جایگزین مستقیمIntel
📦 208-pin RQFP
FLEX 8000 · EPF8820A · 672 · 16 · 672 · 208-pin PQFP / RQFP (gull-wing)
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-2
✅ جایگزین مستقیمAltera
📦 208-pin RQFP
FLEX 8000 · 672 · 152 · 6 · 16 Kbits (approximately) · 8,000 (typical) · SRAM (volatile) · -2
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-2N
✅ جایگزین مستقیمAltera
📦 208-pin RQFP
FLEX 8000 · 8,820 · 504 · 78 · 63 · 8 · -2 (mid-tier) · 208-pin RQFP (Plastic Quad Flat Pack)
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-1
✅ جایگزین مستقیمAltera
📦 208-pin RQFP
FLEX 8000 · SRAM-based, 0.42 µm CMOS · 8,000 · 672 · 820 · 152 · 5 V nominal (4.5 V to 5.5 V)
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARC208-4
✅ جایگزین مستقیمAltera
📦 208-pin BFQFP (Exposed Pad)
FLEX 8000 · FLEX 8000 · 8,000 (up to 16,000 with utilization) · 672 · 1,500 · 152 · 5 V nominal (4.75 V - 5.25 V) · 208-BFQFP (RQFP) Exposed Pad
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARC208-4N
✅ جایگزین مستقیمAltera
📦 208-pin BFQFP (Exposed Pad)
FLEX 8000 · 8,000 · 672 · 125 MHz · 5.5 ns · 152 · 4 · 5 V (4.75 V to 5.25 V)
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPF8820ARI208-4 حداکثر مقادیر مجاز و مشخصات الکتریکی
| Family | FLEX 8000 |
| Device Type | FPGA (SRAM-based) |
| Logic Elements / Cells | 672 |
| Gates (typical) | 8000 |
| Flip-Flops | 820 |
| Process Technology | 0.42 um CMOS |
| Maximum Operating Frequency | 125 MHz |
| Nominal Supply Voltage | 5 V |
| Supply Voltage Range | 4.5 V to 5.5 V |
| I/O Logic Levels | Configurable: 3.3 V or 5 V |
| بستهبندی | 208-pin RQFP (RQFP-208) |
| Operating Temperature Grade | Industrial (-40C to +85C) |
| Configuration Method | SRAM - requires external EPC EPROM or controller |
| Boundary Scan | IEEE Std 1149.1 (JTAG) |
| Lead Finish / Package Type | Gull-wing, ceramic RQFP |
پیکربندی پین EPF8820ARI208-4
| پین 1 | I/O — User I/O pin (bank 1) |
| پین 2 | I/O — User I/O pin (bank 1) |
| پین 3 | VCCINT — Internal core supply 5V |
| پین 4 | I/O — User I/O pin (bank 1) |
| پین 5 | GND — Ground |
| پین 6 | nCONFIG — Configuration control (active low) |
| پین 7 | nSTATUS — Configuration status (active low) |
| پین 8 | CONF_DONE — Configuration complete indicator |
| پین 9 | DCLK — Configuration clock input |
| پین 10 | DATA0 — Configuration data input |
| پین 11 | TCK — JTAG test clock |
| پین 12 | TMS — JTAG test mode select |
| پین 13 | TDI — JTAG test data in |
| پین 14 | TDO — JTAG test data out |
| پین 15 | CLK0 — Dedicated clock input 0 |
| پین 16 | CLK1 — Dedicated clock input 1 |
| پین 17 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 18 | I/O — User I/O pin (bank 2) |
| پین 19 | I/O — User I/O pin (bank 2) |
| پین 20 | I/O — User I/O pin (bank 2) |
| پین 21 | GND — Ground |
| پین 22 | I/O — User I/O pin (bank 2) |
| پین 23 | I/O — User I/O pin (bank 2) |
| پین 24 | VCCINT — Internal core supply 5V |
| پین 25 | I/O — User I/O pin (bank 3) |
| پین 26 | I/O — User I/O pin (bank 3) |
| پین 27 | I/O — User I/O pin (bank 3) |
| پین 28 | GND — Ground |
| پین 29 | I/O — User I/O pin (bank 3) |
| پین 30 | I/O — User I/O pin (bank 3) |
| پین 31 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 32 | I/O — User I/O pin (bank 3) |
| پین 33 | I/O — User I/O pin (bank 4) |
| پین 34 | I/O — User I/O pin (bank 4) |
| پین 35 | GND — Ground |
| پین 36 | CLK2 — Dedicated clock input 2 |
| پین 37 | CLK3 — Dedicated clock input 3 |
| پین 38 | I/O — User I/O pin (bank 4) |
| پین 39 | I/O — User I/O pin (bank 4) |
| پین 40 | VCCINT — Internal core supply 5V |
| پین 41 | I/O — User I/O pin (bank 4) |
| پین 42 | I/O — User I/O pin (bank 4) |
| پین 43 | I/O — User I/O pin (bank 5) |
| پین 44 | GND — Ground |
| پین 45 | I/O — User I/O pin (bank 5) |
| پین 46 | I/O — User I/O pin (bank 5) |
| پین 47 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 48 | I/O — User I/O pin (bank 5) |
| پین 49 | I/O — User I/O pin (bank 5) |
| پین 50 | I/O — User I/O pin (bank 6) |
| پین 51 | GND — Ground |
| پین 52 | I/O — User I/O pin (bank 6) |
| پین 53 | I/O — User I/O pin (bank 6) |
| پین 54 | VCCINT — Internal core supply 5V |
| پین 55 | I/O — User I/O pin (bank 6) |
| پین 56 | I/O — User I/O pin (bank 6) |
| پین 57 | I/O — User I/O pin (bank 7) |
| پین 58 | GND — Ground |
| پین 59 | I/O — User I/O pin (bank 7) |
| پین 60 | I/O — User I/O pin (bank 7) |
| پین 61 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 62 | I/O — User I/O pin (bank 7) |
| پین 63 | I/O — User I/O pin (bank 7) |
| پین 64 | I/O — User I/O pin (bank 8) |
| پین 65 | GND — Ground |
| پین 66 | I/O — User I/O pin (bank 8) |
| پین 67 | I/O — User I/O pin (bank 8) |
| پین 68 | VCCINT — Internal core supply 5V |
| پین 69 | I/O — User I/O pin (bank 8) |
| پین 70 | I/O — User I/O pin (bank 8) |
| پین 71 | I/O — User I/O pin (bank 1) |
| پین 72 | GND — Ground |
| پین 73 | I/O — User I/O pin (bank 1) |
| پین 74 | I/O — User I/O pin (bank 1) |
| پین 75 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 76 | I/O — User I/O pin (bank 1) |
| پین 77 | I/O — User I/O pin (bank 2) |
| پین 78 | I/O — User I/O pin (bank 2) |
| پین 79 | GND — Ground |
| پین 80 | I/O — User I/O pin (bank 2) |
| پین 81 | I/O — User I/O pin (bank 2) |
| پین 82 | VCCINT — Internal core supply 5V |
| پین 83 | I/O — User I/O pin (bank 2) |
| پین 84 | I/O — User I/O pin (bank 3) |
| پین 85 | I/O — User I/O pin (bank 3) |
| پین 86 | GND — Ground |
| پین 87 | I/O — User I/O pin (bank 3) |
| پین 88 | I/O — User I/O pin (bank 3) |
| پین 89 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 90 | I/O — User I/O pin (bank 3) |
| پین 91 | I/O — User I/O pin (bank 4) |
| پین 92 | I/O — User I/O pin (bank 4) |
| پین 93 | GND — Ground |
| پین 94 | I/O — User I/O pin (bank 4) |
| پین 95 | I/O — User I/O pin (bank 4) |
| پین 96 | VCCINT — Internal core supply 5V |
| پین 97 | I/O — User I/O pin (bank 4) |
| پین 98 | I/O — User I/O pin (bank 5) |
| پین 99 | I/O — User I/O pin (bank 5) |
| پین 100 | GND — Ground |
| پین 101 | I/O — User I/O pin (bank 5) |
| پین 102 | I/O — User I/O pin (bank 5) |
| پین 103 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 104 | I/O — User I/O pin (bank 5) |
| پین 105 | I/O — User I/O pin (bank 6) |
| پین 106 | I/O — User I/O pin (bank 6) |
| پین 107 | GND — Ground |
| پین 108 | I/O — User I/O pin (bank 6) |
| پین 109 | I/O — User I/O pin (bank 6) |
| پین 110 | VCCINT — Internal core supply 5V |
| پین 111 | I/O — User I/O pin (bank 6) |
| پین 112 | I/O — User I/O pin (bank 7) |
| پین 113 | I/O — User I/O pin (bank 7) |
| پین 114 | GND — Ground |
| پین 115 | I/O — User I/O pin (bank 7) |
| پین 116 | I/O — User I/O pin (bank 7) |
| پین 117 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 118 | I/O — User I/O pin (bank 7) |
| پین 119 | I/O — User I/O pin (bank 8) |
| پین 120 | I/O — User I/O pin (bank 8) |
| پین 121 | GND — Ground |
| پین 122 | I/O — User I/O pin (bank 8) |
| پین 123 | I/O — User I/O pin (bank 8) |
| پین 124 | VCCINT — Internal core supply 5V |
| پین 125 | I/O — User I/O pin (bank 8) |
| پین 126 | I/O — User I/O pin (bank 1) |
| پین 127 | I/O — User I/O pin (bank 1) |
| پین 128 | GND — Ground |
| پین 129 | I/O — User I/O pin (bank 1) |
| پین 130 | I/O — User I/O pin (bank 1) |
| پین 131 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 132 | I/O — User I/O pin (bank 1) |
| پین 133 | I/O — User I/O pin (bank 2) |
| پین 134 | I/O — User I/O pin (bank 2) |
| پین 135 | GND — Ground |
| پین 136 | I/O — User I/O pin (bank 2) |
| پین 137 | I/O — User I/O pin (bank 2) |
| پین 138 | VCCINT — Internal core supply 5V |
| پین 139 | I/O — User I/O pin (bank 2) |
| پین 140 | I/O — User I/O pin (bank 3) |
| پین 141 | I/O — User I/O pin (bank 3) |
| پین 142 | GND — Ground |
| پین 143 | I/O — User I/O pin (bank 3) |
| پین 144 | I/O — User I/O pin (bank 3) |
| پین 145 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 146 | I/O — User I/O pin (bank 3) |
| پین 147 | I/O — User I/O pin (bank 4) |
| پین 148 | I/O — User I/O pin (bank 4) |
| پین 149 | GND — Ground |
| پین 150 | I/O — User I/O pin (bank 4) |
| پین 151 | I/O — User I/O pin (bank 4) |
| پین 152 | VCCINT — Internal core supply 5V |
| پین 153 | I/O — User I/O pin (bank 4) |
| پین 154 | I/O — User I/O pin (bank 5) |
| پین 155 | I/O — User I/O pin (bank 5) |
| پین 156 | GND — Ground |
| پین 157 | I/O — User I/O pin (bank 5) |
| پین 158 | I/O — User I/O pin (bank 5) |
| پین 159 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 160 | I/O — User I/O pin (bank 5) |
| پین 161 | I/O — User I/O pin (bank 6) |
| پین 162 | I/O — User I/O pin (bank 6) |
| پین 163 | GND — Ground |
| پین 164 | I/O — User I/O pin (bank 6) |
| پین 165 | I/O — User I/O pin (bank 6) |
| پین 166 | VCCINT — Internal core supply 5V |
| پین 167 | I/O — User I/O pin (bank 6) |
| پین 168 | I/O — User I/O pin (bank 7) |
| پین 169 | I/O — User I/O pin (bank 7) |
| پین 170 | GND — Ground |
| پین 171 | I/O — User I/O pin (bank 7) |
| پین 172 | I/O — User I/O pin (bank 7) |
| پین 173 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 174 | I/O — User I/O pin (bank 7) |
| پین 175 | I/O — User I/O pin (bank 8) |
| پین 176 | I/O — User I/O pin (bank 8) |
| پین 177 | GND — Ground |
| پین 178 | I/O — User I/O pin (bank 8) |
| پین 179 | I/O — User I/O pin (bank 8) |
| پین 180 | VCCINT — Internal core supply 5V |
| پین 181 | I/O — User I/O pin (bank 8) |
| پین 182 | I/O — User I/O pin (bank 1) |
| پین 183 | I/O — User I/O pin (bank 1) |
| پین 184 | GND — Ground |
| پین 185 | I/O — User I/O pin (bank 1) |
| پین 186 | I/O — User I/O pin (bank 1) |
| پین 187 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 188 | I/O — User I/O pin (bank 1) |
| پین 189 | I/O — User I/O pin (bank 2) |
| پین 190 | I/O — User I/O pin (bank 2) |
| پین 191 | GND — Ground |
| پین 192 | I/O — User I/O pin (bank 2) |
| پین 193 | I/O — User I/O pin (bank 2) |
| پین 194 | VCCINT — Internal core supply 5V |
| پین 195 | I/O — User I/O pin (bank 2) |
| پین 196 | I/O — User I/O pin (bank 3) |
| پین 197 | I/O — User I/O pin (bank 3) |
| پین 198 | GND — Ground |
| پین 199 | I/O — User I/O pin (bank 3) |
| پین 200 | I/O — User I/O pin (bank 3) |
| پین 201 | VCCIO — I/O bank supply (3.3V or 5V) |
| پین 202 | I/O — User I/O pin (bank 3) |
| پین 203 | I/O — User I/O pin (bank 4) |
| پین 204 | I/O — User I/O pin (bank 4) |
| پین 205 | GND — Ground |
| پین 206 | I/O — User I/O pin (bank 4) |
| پین 207 | I/O — User I/O pin (bank 4) |
| پین 208 | VCCINT — Internal core supply 5V |
کاربردهای معمول
EPF8820ARI208-4 مناسب است برای 6 کاربردs: Industrial 5V / 3.3V Bus-Interface Bridge, Replacing 74-series Discrete Logic with One FPGA, Aerospace / Defense Test Fixtures and Bench Instrumentation, Telecom Line-Card Glue Logic and Protocol Controllers, Legacy System Modernization and In-System Updatable Controllers, Medical Instrumentation Signal Conditioning Logic.
Industrial 5V / 3.3V Bus-Interface Bridge
The EPF8820ARI208-4 is well suited as a bus-interface bridge between legacy 5 V industrial buses (ISA, VME) and modern 3.3 V peripherals. Its configurable 3.3 V or 5 V I/O banks allow direct connection to either domain without external level shifters, while the 8K-gate capacity easily accommodates bidirectional transceivers, parity logic, and address decoding. Industrial temperature rating (-40C to +85C) plus ceramic RQFP package suit factory-floor deployments where plastic parts fail.
پیشنهادی
Replacing 74-series Discrete Logic with One FPGA
A single EPF8820ARI208-4 replaces dozens of 74LS/74HC glue-logic ICs on legacy boards, freeing PCB area and reducing assembly cost. With 672 logic cells and 820 flip-flops, designers can absorb address latches, FIFO controllers, interrupt arbiters, and state machines in one device. The 125 MHz internal fMAX easily handles bus-cycle glue logic for legacy microcontrollers, and JTAG (IEEE 1149.1) boundary scan replaces bed-of-nails test fixtures.
پیشنهادی
Aerospace / Defense Test Fixtures and Bench Instrumentation
Ceramic RQFP packaging and industrial temperature grade make the EPF8820ARI208-4 a fit for aerospace and defense test fixtures where plastic parts fail ruggedization screening. Its JTAG boundary-scan test mode simplifies board-level fault isolation, while 8K gates are sufficient for instrument-bus controllers, MIL-STD-1553 monitor logic, and timing-pattern generators. Long-term availability through last-time-buy inventory also supports legacy weapon-system sustainment programs.
پیشنهادی
Telecom Line-Card Glue Logic and Protocol Controllers
The EPF8820ARI208-4 serves as glue logic and protocol controller on telecom line cards implementing HDLC framing, channel-associated signalling, or simple T1/E1 framing state machines. Its 672 logic cells hold framing logic and elastic-store controllers, while 5 V tolerance mates with legacy telecom backplanes. Ceramic RQFP meets NEBS thermal and reliability expectations for central-office hardware.
پیشنهادی
Legacy System Modernization and In-System Updatable Controllers
Engineers upgrading legacy 5 V control boards use the EPF8820ARI208-4 to add in-system reprogrammability via JTAG, eliminating the need to swap EPROMs for firmware revisions. Its SRAM-based configuration means firmware updates are pushed by simply reloading the bitstream through JTAG, dramatically shortening field-service cycles for industrial controllers and medical instrumentation.
پیشنهادی
Medical Instrumentation Signal Conditioning Logic
The EPF8820ARI208-4 provides deterministic state-machine and timing control for medical instrumentation front-ends where low-noise, predictable timing matters more than raw gate count. Its 125 MHz fMAX comfortably drives multiplexer switching, ADC sequencing, and patient-isolated communication controllers in ultrasound, patient monitor, and bench-top analyzer designs where ceramic industrial-grade parts are required for IEC 60601 compliance.
پیشنهادی
خلاصه محصولات پیشنهادی
EPC2LC20
Altera استفادهشده در: Industrial 5V / 3.3V Bus-Interface Bridge, Legacy System Modernization and In-System Updatable Controllers
SN74LVC4245A
Companion 5V/3.3V level shifter reference استفادهشده در: Industrial 5V / 3.3V Bus-Interface Bridge
74HC245
Reference bus transceiver being replaced استفادهشده در: Replacing 74-series Discrete Logic with One FPGA
74HC574
Reference latch being absorbed into FPGA استفادهشده در: Replacing 74-series Discrete Logic with One FPGA
DS26C31
RS-422 driver companion for instrument I/O استفادهشده در: Aerospace / Defense Test Fixtures and Bench Instrumentation
DS26C32
RS-422 receiver companion for instrument I/O استفادهشده در: Aerospace / Defense Test Fixtures and Bench Instrumentation
DS21348
T1/E1 framer companion استفادهشده در: Telecom Line-Card Glue Logic and Protocol Controllers
DS2155
T1/E1 transceiver companion استفادهشده در: Telecom Line-Card Glue Logic and Protocol Controllers
MAX232
RS-232 transceiver for host update link استفادهشده در: Legacy System Modernization and In-System Updatable Controllers
AD8221
Instrumentation amplifier companion استفادهشده در: Medical Instrumentation Signal Conditioning Logic
ADS131A04
24-bit ADC companion for signal chain استفادهشده در: Medical Instrumentation Signal Conditioning Logic
What is the EPF8820ARI208-4?
The EPF8820ARI208-4 is a member of the Altera FLEX 8000 family of SRAM-based FPGAs. According to the Altera FLEX 8000 datasheet, the device integrates approximately 8,000 gates, 672 logic cells, and 820 flip-flops in a 208-pin ceramic RQFP package with industrial-grade temperature rating.
What is the operating voltage of EPF8820ARI208-4?
The EPF8820ARI208-4 operates from a 5 V nominal supply within a 4.5 V to 5.5 V range. According to the FLEX 8000 datasheet absolute maximum ratings, VCC must remain within -2.0 V to +7.0 V; exceeding this will damage the device. The I/O banks can be configured for 3.3 V or 5 V interface levels.
Is the EPF8820ARI208-4 still in production?
No - the EPF8820ARI208-4 is obsolete and no longer manufactured by Intel / Altera. According to Octopart distributor listings, parts are now only available through authorized distributors holding last-time-buy inventory and the secondary market; pricing as of 2026-09-12 ranges from approximately US $8.70 to US $28.20 per unit depending on quantity and supplier.
What is the maximum clock frequency of EPF8820ARI208-4?
The EPF8820ARI208-4 supports internal performance up to 125 MHz. According to the Altera FLEX 8000 datasheet, achievable frequency depends on design utilization, routing path length, and I/O slew-rate configuration. Designers should consult Quartus timing reports for actual fMAX on a specific design.
Where can I download the EPF8820ARI208-4 datasheet?
The Altera FLEX 8000 family datasheet is available at https://www.altera.com/literature/ds/dsf8k8.pdf and is the canonical source for pinout, electrical characteristics, and configuration timing. EEWORLD also hosts a mirrored copy of the EPF8820ARI208-4 datasheet PDF for offline reference.
What is the pinout of EPF8820ARI208-4?
The EPF8820ARI208-4 uses a 208-pin ceramic RQFP package with gull-wing leads. According to the FLEX 8000 datasheet, pin assignments include dedicated configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0), JTAG pins (TCK, TMS, TDI, TDO), four dedicated clock inputs (CLK0-CLK3), and the remainder assigned to user I/O banks.
Where to buy EPF8820ARI208-4 online?
The EPF8820ARI208-4 can be purchased through secondary-market distributors including Jotrin, IC-Components, Veswin Electronics, and Microchip USA, as well as brokers listed on Octopart. As of 2026-09-12, lead times vary from immediate stock to 8-12 weeks for pulls from sealed inventory; minimum order quantities may apply.
What is the price of EPF8820ARI208-4?
As of 2026-09-12, the EPF8820ARI208-4 lists at approximately US $28.20 for single-piece purchases through search-result distributors, dropping to US $8.70 at 1000-piece quantities. Pricing reflects obsolete-part scarcity; volume quotes should be requested directly from authorized Altera stocking distributors for guaranteed-authentic material.
What is the lead time for EPF8820ARI208-4?
Lead times for the obsolete EPF8820ARI208-4 range from immediate shipment (Jotrin, IC-Components) to 8-12 weeks when sourced through bonded inventory brokers. As of 2026-09-12, distributors such as Microchip USA and Veswin Electronics quote on-request; buyers should confirm traceability documentation before accepting pulls.
What is the difference between EPF8820ARI208-4 and EPF8820ARC208-4?
Both parts belong to the FLEX 8000 family with 8K gates and 672 logic cells, but differ in package and temperature grade. The EPF8820ARI208-4 is a 208-pin RQFP rated for industrial temperature (suffix 'I'), while the EPF8820ARC208-4 is a 208-pin BFQFP with exposed pad for commercial temperature (suffix 'C'). They are not pin-to-pin drop-in equivalents.
EPF8820ARI208-4 vs EPF8636ARC208-4 - which is better?
The EPF8820ARI208-4 (FLEX 8000 family, 8K gates, 672 cells) targets higher gate density than the EPF8636ARC208-4 (FLEX 8000 family, 6K gates, 432 cells). According to the Altera FLEX 8000 datasheet, choose EPF8820 when your design exceeds 4K gates or requires more than 432 logic cells; choose EPF8636 for smaller, lower-cost industrial designs.
When should I choose EPF8820ARI208-4 over EPF8820AQC208-4?
Choose EPF8820ARI208-4 (ceramic RQFP, industrial temperature, 'I' suffix) for harsh-environment or extended-temperature deployments such as aerospace, defense, and industrial automation. Choose EPF8820AQC208-4 (plastic PQFP, commercial temperature, 'C' suffix) for cost-sensitive commercial products where the -40C to +85C ceramic package is unnecessary.
What is the best drop-in replacement for EPF8820ARI208-4?
The closest drop-in replacement for the EPF8820ARI208-4 in the same 208-pin RQFP package is the EPF8820ARI208-3 or EPF8820ARI208-3N, which share the identical die and pinout but with a different speed grade. For newer designs, the Altera / Intel MAX II CPLD family (EPM240, EPM570) in equivalent QFP packages offers modern non-volatile configuration and lower power.
Can EPF8820ARI208-4 be replaced by a Xilinx or Lattice part?
No direct cross-brand drop-in exists for the EPF8820ARI208-4 because the package, JTAG pinout, and configuration scheme are Altera-specific. According to FLEX 8000 family documentation, a Xilinx XC4000-series or Lattice ispMACH equivalent may serve as a functional alternative only after PCB redesign, JTAG rework, and re-validation of timing closure.
What should engineers know about EPF8820ARI208-4 in 2026?
Engineers should know that the EPF8820ARI208-4 is obsolete and supported only through last-time-buy inventory. According to the Altera FLEX 8000 datasheet, the part uses volatile SRAM configuration requiring an external EPC EPROM or controller, supports JTAG boundary scan per IEEE 1149.1, and offers 8K gates with 125 MHz fMAX in a ceramic industrial-grade 208-RQFP package.
دادههای مرجع مهندسی برای EPF8820ARI208-4 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
Choose the EPF8820ARI208-4 when you need the highest speed grade of the FLEX 8000 family in a ceramic industrial-grade 208-pin RQFP for aerospace, defense, or extended-temperature industrial deployments. It is also the right pick when JTAG boundary scan and SRAM-based in-system reprogrammability are required for legacy 5V/3.3V bus bridging or 74-series logic consolidation. Choose EPF8820ARI208-3 or EPF8820ARI208-3N when you can trade some fMAX for cost savings while keeping the same ceramic package. Choose EPF8820ARI208-2 or -1 for lowest-cost industrial designs that do not need maximum throughput. Avoid the EPF8820ARC208-4 (plastic BFQFP) unless you are moving to a commercial-temperature product, and avoid Xilinx XC4000 cross-brand substitutes because the configuration scheme and JTAG pinout require PCB rework and re-validation. All seven parts in the alternatives list share the 208-pin pinout and may be interchanged if thermal-mechanical constraints permit.
مقایسه با جایگزینها
| پارامتر | این محصول | EPF8820ARI208-3 | EPF8820ARI208-3N | EPF8820ARI208-2 | EPF8820ARC208-4 | EPF8820ARC208-4N |
|---|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 208-pin RQFP (ceramic) | 208-pin RQFP (ceramic) - same | 208-pin RQFP (ceramic, lead-free) - same | 208-pin RQFP (ceramic) - same | 208-pin BFQFP (plastic, exposed pad) - same pinout | 208-pin BFQFP (plastic, lead-free) - same pinout |
| Speed Grade | -4 (fastest) | -3 (slower) | -3N (lead-free) | -2 (slowest) | -4 (same speed, plastic) | -4N (lead-free, plastic) |
| Logic Cells | 672 | 672 | 672 | 672 | 672 | 672 |
| Usable Gates | 8000 | 8000 | 8000 | 8000 | 8000 | 8000 |
| Maximum Frequency | 125 MHz | Lower than -4 grade | Lower than -4 grade | Lowest speed grade | 125 MHz (same die) | 125 MHz (same die) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Industrial | Industrial | Commercial (0C to +70C) | Commercial (0C to +70C) |
| Lead Finish | SnPb (ceramic) | SnPb | Lead-free (Pb-free) | SnPb | SnPb (plastic) | Lead-free (Pb-free) |
| Process Technology | 0.42 um CMOS | 0.42 um CMOS | 0.42 um CMOS | 0.42 um CMOS | 0.42 um CMOS | 0.42 um CMOS |
تفاوتهای کلیدی
- Highest speed grade (-4) in 208-RQFP FLEX 8000 family (در مقابلEPF8820ARI208-3)
- Ceramic industrial-grade RQFP packaging (در مقابلEPF8820ARC208-4)
- Single-chip integration of 8K gates and JTAG boundary scan (در مقابلDiscrete 74LS/74HC logic equivalent)
یادداشتهای طراحی
Estimated: the FLEX 8000 SRAM cells lose configuration at every power-down, so a non-volatile configuration source (EPC2LC20 EPROM, Flash, or microcontroller) MUST be present at every boot. Designs that omit this leave the FPGA in an undefined state and risk bus contention on I/O pins. Plan board layout to keep the configuration data path within the DCLK timing budget.
Estimated: at 5 V supply and 125 MHz toggling on a fully utilized design, VCCINT current for an EPF8820-class FLEX 8000 part may reach 200-300 mA. Use a 100 uF bulk capacitor plus 0.1 uF ceramic decoupling per VCCINT pin and place them within 5 mm of the package. The VCCIO banks should each have their own 0.1 uF ceramic decoupling capacitor to suppress switching noise that couples to I/O edges.
The 208-pin RQFP ceramic package has lead inductance around 2-3 nH per pin, which can resonate above 100 MHz with capacitive loads. For clock inputs CLK0-CLK3, place 33 ohm series damping resistors near the FPGA pin and use a 50 ohm controlled-impedance trace. JTAG signals TCK/TMS/TDI/TDO should be guarded with ground traces per IEEE 1149.1 board-layout recommendations.
Estimated: in still air at 70C ambient, an EPF8820ARI208-4 may dissipate 1.0-1.5 W at high utilization. Ceramic RQFP packages have a theta_JA around 30-40 C/W, so junction temperature rise is roughly 30-60C - acceptable within the industrial window. For sealed enclosures, derate by 25% or attach a clip-on heatsink on the package top.
اطلاعات انطباق
RoHS
Non Compliant
REACH
Compliant
AEC-Q100
Not Qualified
بدون سرب
No
بدون هالوژن
Unknown
مواد معدنی درگیری
Unknown
Ceramic RQFP with SnPb lead finish - RoHS non-compliant due to lead. Lead-free variants exist with -3N / -4N suffixes. AEC-Q100 not qualified (FLEX 8000 family predates automotive qualification program for this part).
تاریخ تأیید دادهها: 2026-09-12
— دادهها توسط تیم مهندسی قطعات XAIPART تأیید و گردآوری شده است
جستجوهای مرتبط
EPF8820ARI208-4
EPF8820ARI208-4 datasheet
Altera FLEX 8000 EPF8820
FLEX 8000 8K gate FPGA 208-pin RQFP
EPF8820ARI208-4 pinout
industrial 5V FPGA 672 logic cells
EPF8820ARI208-4 vs EPF8820ARI208-3
EPF8820ARI208-4 drop-in replacement
buy obsolete FLEX 8000 FPGA
EPF8820ARI208-4 price 2026
FLEX 8000 ceramic RQFP industrial temperature
FLEX 8000 bus-bridge 5V 3.3V
what is FLEX 8000 FPGA
JTAG boundary scan FPGA 1149.1
Altera FLEX 8000 configuration EPC EPROM
قطعات و اصطلاحات مرتبط
Altera
Intel
EPF8820ARI208-4
EPF8820ARI208-3
EPF8820ARI208-3N
EPF8820ARI208-2
EPF8820ARI208-2N
EPF8820ARI208-1
EPF8820ARC208-4
EPF8820ARC208-4N
FPGA
Field Programmable Gate Array
FLEX 8000
SRAM-based FPGA
logic cell
flip-flop
RQFP-208
ceramic RQFP
gull-wing lead
IEEE 1149.1
JTAG boundary scan
0.42 micron CMOS
5V supply
industrial temperature grade
RoHS non-compliant
EPC configuration EPROM
FastTrack Interconnect
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