Altera

EPF8820ARI208-4 - FLEX 8000 FPGA, 8K Gates, 5V, 208-RQFP | Intel / Altera

料号： EPF8820ARI208-4 ✗ 停产

有现货 1-3 个工作日内发货

5 V Vdss 208-pin RQFP (RQFP-208) Package 125 MHz Speed

低至 $8.7 USD / 件

最小起订量： 1 |

价格更新于： 2026-09-11

批量定价

数量	单价	小计
1	$28.2	$28.20
10	$22.5	$225.00
100	$15.8	$1,580.00
500	$11.4	$5,700.00
1,000	$8.7	$8,700.00

ℹ️ 所有价格均以 USD 计价

查看数据手册 (PDF) 查看替代料

数量

EPF8820ARI208-4 概述

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.

直接替换替代料： EPF8820ARI208-4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。

本系列中的变体

可与以下型号直接替换的同系列型号： EPF8820ARI208-4 （相同外形与封装尺寸） ——差异在于 Package, Process Technology, Usable Gates, Configuration Method, Speed Grade.

EPF8820ARC208-4

Altera

Process Technology: CMOS, 0.5 um (5 V SRAM-based)

Usable Gates: 8,000 (up to 16,000 with utilization)

Speed Grade: -4

对比 EPF8820ARI208-4 →

EPF8820ARC208-4N

Altera

Package: 208-RQFP / BFQFP with exposed pad

Process Technology: 0.42 µm CMOS

Usable Gates: 8,000

对比 EPF8820ARI208-4 →

EPF8820ARI208-1

Altera

Package: 208-pin RQFP

Usable Gates: 8,000

对比 EPF8820ARI208-4 →

EPF8820ARI208-2

Altera

Package: 208-pin RQFP (RFI)

Usable Gates: 8,000 (typical)

Speed Grade: -2

对比 EPF8820ARI208-4 →

EPF8820ARI208-2N

Altera

Package: 208-pin RQFP (Plastic Quad Flat Pack)

Usable Gates: 8,820

Configuration Method: Passive serial / JTAG / Altera EPC configuration device

对比 EPF8820ARI208-4 →

EPF8820ARI208-3

Altera

Package: 208-pin PQFP (Plastic Quad Flat Pack)

Process Technology: CMOS (SRAM-based configuration)

Configuration Method: SRAM (requires external config device)

对比 EPF8820ARI208-4 →

EPF8820ARI208-3N

Intel

Package: 208-pin PQFP / RQFP (gull-wing)

Process Technology: CMOS (SRAM-based configuration)

Configuration Method: Serial (PS / passive serial) or ByteBlaster JTAG

对比 EPF8820ARI208-4 →

EPF8820ARI208-4H

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

✅ 直接替换

Altera

📦 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)

✓ 有现货

$32 / 个

查看数据手册 →

EPF8820ARI208-4 最大额定值与电气特性

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
封装	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

EPF8820ARI208-4 引脚配置

引脚 1	I/O — User I/O pin (bank 1)
引脚 2	I/O — User I/O pin (bank 1)
引脚 3	VCCINT — Internal core supply 5V
引脚 4	I/O — User I/O pin (bank 1)
引脚 5	GND — Ground
引脚 6	nCONFIG — Configuration control (active low)
引脚 7	nSTATUS — Configuration status (active low)
引脚 8	CONF_DONE — Configuration complete indicator
引脚 9	DCLK — Configuration clock input
引脚 10	DATA0 — Configuration data input
引脚 11	TCK — JTAG test clock
引脚 12	TMS — JTAG test mode select
引脚 13	TDI — JTAG test data in
引脚 14	TDO — JTAG test data out
引脚 15	CLK0 — Dedicated clock input 0
引脚 16	CLK1 — Dedicated clock input 1
引脚 17	VCCIO — I/O bank supply (3.3V or 5V)
引脚 18	I/O — User I/O pin (bank 2)
引脚 19	I/O — User I/O pin (bank 2)
引脚 20	I/O — User I/O pin (bank 2)
引脚 21	GND — Ground
引脚 22	I/O — User I/O pin (bank 2)
引脚 23	I/O — User I/O pin (bank 2)
引脚 24	VCCINT — Internal core supply 5V
引脚 25	I/O — User I/O pin (bank 3)
引脚 26	I/O — User I/O pin (bank 3)
引脚 27	I/O — User I/O pin (bank 3)
引脚 28	GND — Ground
引脚 29	I/O — User I/O pin (bank 3)
引脚 30	I/O — User I/O pin (bank 3)
引脚 31	VCCIO — I/O bank supply (3.3V or 5V)
引脚 32	I/O — User I/O pin (bank 3)
引脚 33	I/O — User I/O pin (bank 4)
引脚 34	I/O — User I/O pin (bank 4)
引脚 35	GND — Ground
引脚 36	CLK2 — Dedicated clock input 2
引脚 37	CLK3 — Dedicated clock input 3
引脚 38	I/O — User I/O pin (bank 4)
引脚 39	I/O — User I/O pin (bank 4)
引脚 40	VCCINT — Internal core supply 5V
引脚 41	I/O — User I/O pin (bank 4)
引脚 42	I/O — User I/O pin (bank 4)
引脚 43	I/O — User I/O pin (bank 5)
引脚 44	GND — Ground
引脚 45	I/O — User I/O pin (bank 5)
引脚 46	I/O — User I/O pin (bank 5)
引脚 47	VCCIO — I/O bank supply (3.3V or 5V)
引脚 48	I/O — User I/O pin (bank 5)
引脚 49	I/O — User I/O pin (bank 5)
引脚 50	I/O — User I/O pin (bank 6)
引脚 51	GND — Ground
引脚 52	I/O — User I/O pin (bank 6)
引脚 53	I/O — User I/O pin (bank 6)
引脚 54	VCCINT — Internal core supply 5V
引脚 55	I/O — User I/O pin (bank 6)
引脚 56	I/O — User I/O pin (bank 6)
引脚 57	I/O — User I/O pin (bank 7)
引脚 58	GND — Ground
引脚 59	I/O — User I/O pin (bank 7)
引脚 60	I/O — User I/O pin (bank 7)
引脚 61	VCCIO — I/O bank supply (3.3V or 5V)
引脚 62	I/O — User I/O pin (bank 7)
引脚 63	I/O — User I/O pin (bank 7)
引脚 64	I/O — User I/O pin (bank 8)
引脚 65	GND — Ground
引脚 66	I/O — User I/O pin (bank 8)
引脚 67	I/O — User I/O pin (bank 8)
引脚 68	VCCINT — Internal core supply 5V
引脚 69	I/O — User I/O pin (bank 8)
引脚 70	I/O — User I/O pin (bank 8)
引脚 71	I/O — User I/O pin (bank 1)
引脚 72	GND — Ground
引脚 73	I/O — User I/O pin (bank 1)
引脚 74	I/O — User I/O pin (bank 1)
引脚 75	VCCIO — I/O bank supply (3.3V or 5V)
引脚 76	I/O — User I/O pin (bank 1)
引脚 77	I/O — User I/O pin (bank 2)
引脚 78	I/O — User I/O pin (bank 2)
引脚 79	GND — Ground
引脚 80	I/O — User I/O pin (bank 2)
引脚 81	I/O — User I/O pin (bank 2)
引脚 82	VCCINT — Internal core supply 5V
引脚 83	I/O — User I/O pin (bank 2)
引脚 84	I/O — User I/O pin (bank 3)
引脚 85	I/O — User I/O pin (bank 3)
引脚 86	GND — Ground
引脚 87	I/O — User I/O pin (bank 3)
引脚 88	I/O — User I/O pin (bank 3)
引脚 89	VCCIO — I/O bank supply (3.3V or 5V)
引脚 90	I/O — User I/O pin (bank 3)
引脚 91	I/O — User I/O pin (bank 4)
引脚 92	I/O — User I/O pin (bank 4)
引脚 93	GND — Ground
引脚 94	I/O — User I/O pin (bank 4)
引脚 95	I/O — User I/O pin (bank 4)
引脚 96	VCCINT — Internal core supply 5V
引脚 97	I/O — User I/O pin (bank 4)
引脚 98	I/O — User I/O pin (bank 5)
引脚 99	I/O — User I/O pin (bank 5)
引脚 100	GND — Ground
引脚 101	I/O — User I/O pin (bank 5)
引脚 102	I/O — User I/O pin (bank 5)
引脚 103	VCCIO — I/O bank supply (3.3V or 5V)
引脚 104	I/O — User I/O pin (bank 5)
引脚 105	I/O — User I/O pin (bank 6)
引脚 106	I/O — User I/O pin (bank 6)
引脚 107	GND — Ground
引脚 108	I/O — User I/O pin (bank 6)
引脚 109	I/O — User I/O pin (bank 6)
引脚 110	VCCINT — Internal core supply 5V
引脚 111	I/O — User I/O pin (bank 6)
引脚 112	I/O — User I/O pin (bank 7)
引脚 113	I/O — User I/O pin (bank 7)
引脚 114	GND — Ground
引脚 115	I/O — User I/O pin (bank 7)
引脚 116	I/O — User I/O pin (bank 7)
引脚 117	VCCIO — I/O bank supply (3.3V or 5V)
引脚 118	I/O — User I/O pin (bank 7)
引脚 119	I/O — User I/O pin (bank 8)
引脚 120	I/O — User I/O pin (bank 8)
引脚 121	GND — Ground
引脚 122	I/O — User I/O pin (bank 8)
引脚 123	I/O — User I/O pin (bank 8)
引脚 124	VCCINT — Internal core supply 5V
引脚 125	I/O — User I/O pin (bank 8)
引脚 126	I/O — User I/O pin (bank 1)
引脚 127	I/O — User I/O pin (bank 1)
引脚 128	GND — Ground
引脚 129	I/O — User I/O pin (bank 1)
引脚 130	I/O — User I/O pin (bank 1)
引脚 131	VCCIO — I/O bank supply (3.3V or 5V)
引脚 132	I/O — User I/O pin (bank 1)
引脚 133	I/O — User I/O pin (bank 2)
引脚 134	I/O — User I/O pin (bank 2)
引脚 135	GND — Ground
引脚 136	I/O — User I/O pin (bank 2)
引脚 137	I/O — User I/O pin (bank 2)
引脚 138	VCCINT — Internal core supply 5V
引脚 139	I/O — User I/O pin (bank 2)
引脚 140	I/O — User I/O pin (bank 3)
引脚 141	I/O — User I/O pin (bank 3)
引脚 142	GND — Ground
引脚 143	I/O — User I/O pin (bank 3)
引脚 144	I/O — User I/O pin (bank 3)
引脚 145	VCCIO — I/O bank supply (3.3V or 5V)
引脚 146	I/O — User I/O pin (bank 3)
引脚 147	I/O — User I/O pin (bank 4)
引脚 148	I/O — User I/O pin (bank 4)
引脚 149	GND — Ground
引脚 150	I/O — User I/O pin (bank 4)
引脚 151	I/O — User I/O pin (bank 4)
引脚 152	VCCINT — Internal core supply 5V
引脚 153	I/O — User I/O pin (bank 4)
引脚 154	I/O — User I/O pin (bank 5)
引脚 155	I/O — User I/O pin (bank 5)
引脚 156	GND — Ground
引脚 157	I/O — User I/O pin (bank 5)
引脚 158	I/O — User I/O pin (bank 5)
引脚 159	VCCIO — I/O bank supply (3.3V or 5V)
引脚 160	I/O — User I/O pin (bank 5)
引脚 161	I/O — User I/O pin (bank 6)
引脚 162	I/O — User I/O pin (bank 6)
引脚 163	GND — Ground
引脚 164	I/O — User I/O pin (bank 6)
引脚 165	I/O — User I/O pin (bank 6)
引脚 166	VCCINT — Internal core supply 5V
引脚 167	I/O — User I/O pin (bank 6)
引脚 168	I/O — User I/O pin (bank 7)
引脚 169	I/O — User I/O pin (bank 7)
引脚 170	GND — Ground
引脚 171	I/O — User I/O pin (bank 7)
引脚 172	I/O — User I/O pin (bank 7)
引脚 173	VCCIO — I/O bank supply (3.3V or 5V)
引脚 174	I/O — User I/O pin (bank 7)
引脚 175	I/O — User I/O pin (bank 8)
引脚 176	I/O — User I/O pin (bank 8)
引脚 177	GND — Ground
引脚 178	I/O — User I/O pin (bank 8)
引脚 179	I/O — User I/O pin (bank 8)
引脚 180	VCCINT — Internal core supply 5V
引脚 181	I/O — User I/O pin (bank 8)
引脚 182	I/O — User I/O pin (bank 1)
引脚 183	I/O — User I/O pin (bank 1)
引脚 184	GND — Ground
引脚 185	I/O — User I/O pin (bank 1)
引脚 186	I/O — User I/O pin (bank 1)
引脚 187	VCCIO — I/O bank supply (3.3V or 5V)
引脚 188	I/O — User I/O pin (bank 1)
引脚 189	I/O — User I/O pin (bank 2)
引脚 190	I/O — User I/O pin (bank 2)
引脚 191	GND — Ground
引脚 192	I/O — User I/O pin (bank 2)
引脚 193	I/O — User I/O pin (bank 2)
引脚 194	VCCINT — Internal core supply 5V
引脚 195	I/O — User I/O pin (bank 2)
引脚 196	I/O — User I/O pin (bank 3)
引脚 197	I/O — User I/O pin (bank 3)
引脚 198	GND — Ground
引脚 199	I/O — User I/O pin (bank 3)
引脚 200	I/O — User I/O pin (bank 3)
引脚 201	VCCIO — I/O bank supply (3.3V or 5V)
引脚 202	I/O — User I/O pin (bank 3)
引脚 203	I/O — User I/O pin (bank 4)
引脚 204	I/O — User I/O pin (bank 4)
引脚 205	GND — Ground
引脚 206	I/O — User I/O pin (bank 4)
引脚 207	I/O — User I/O pin (bank 4)
引脚 208	VCCINT — Internal core supply 5V

典型应用

EPF8820ARI208-4 适用于 6 应用s: 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.

推荐

EPC2LC20 · Altera SN74LVC4245A (Companion 5V/3.3V level shifter reference)

🔧

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.

推荐

74HC245 (Reference bus transceiver being replaced) 74HC574 (Reference latch being absorbed into FPGA)

✈️

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.

推荐

DS26C31 (RS-422 driver companion for instrument I/O) DS26C32 (RS-422 receiver companion for instrument I/O)

🌐

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.

推荐

DS21348 (T1/E1 framer companion) DS2155 (T1/E1 transceiver companion)

🧩

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.

推荐

EPC2LC20 · Altera MAX232 (RS-232 transceiver for host update link)

💊

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.

推荐

AD8221 (Instrumentation amplifier companion) ADS131A04 (24-bit ADC companion for signal chain)

推荐产品汇总

EPC2LC20 Altera 用于： Industrial 5V / 3.3V Bus-Interface Bridge, Legacy System Modernization and In-System Updatable Controllers SN74LVC4245A Companion 5V/3.3V level shifter reference 用于： Industrial 5V / 3.3V Bus-Interface Bridge 74HC245 Reference bus transceiver being replaced 用于： Replacing 74-series Discrete Logic with One FPGA 74HC574 Reference latch being absorbed into FPGA 用于： Replacing 74-series Discrete Logic with One FPGA DS26C31 RS-422 driver companion for instrument I/O 用于： Aerospace / Defense Test Fixtures and Bench Instrumentation DS26C32 RS-422 receiver companion for instrument I/O 用于： Aerospace / Defense Test Fixtures and Bench Instrumentation DS21348 T1/E1 framer companion 用于： Telecom Line-Card Glue Logic and Protocol Controllers DS2155 T1/E1 transceiver companion 用于： Telecom Line-Card Glue Logic and Protocol Controllers MAX232 RS-232 transceiver for host update link 用于： Legacy System Modernization and In-System Updatable Controllers AD8221 Instrumentation amplifier companion 用于： Medical Instrumentation Signal Conditioning Logic ADS131A04 24-bit ADC companion for signal chain 用于： 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.

工程参考数据： EPF8820ARI208-4 ——对比、设计指导和合规信息。

选型指南

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.

与替代料对比

参数	本产品	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

关键差异点

Highest speed grade (-4) in 208-RQFP FLEX 8000 family （对比 EPF8820ARI208-3)
Ceramic industrial-grade RQFP packaging （对比 EPF8820ARC208-4)
Single-chip integration of 8K gates and JTAG boundary scan （对比 Discrete 74LS/74HC logic equivalent)

设计说明

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.

合规信息

RoHS

Non Compliant

REACH

Compliant

AEC-Q100

Not Qualified

无铅

无卤

Unknown

冲突矿物

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).

数据核验日期： 2026-09-12 ——数据由 XAIPART 元器件工程团队核验和整理