Intel

EPF81188AQI208-4 - FLEX 8000 FPGA, 16K Gates, 148 I/O, 208-PQFP | Intel

MPN: EPF81188AQI208-4 ✗ Cuối đời

5 V Vdss 208-pin PQFP (BFQFP, plastic, gull-wing) Package 4 low-skew Speed

Yêu cầu báo giá

MOQ: 1 |

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EPF81188AQI208-4 Tóm tắt

The Intel (formerly Altera) EPF81188AQI208-4 is a high-density FLEX 8000 series CMOS SRAM-based Field Programmable Gate Array (FPGA) housed in a 208-pin Plastic Quad Flat Pack (BFQFP/PQFP) package, featuring up to 16,000 usable gates, approximately 1,500 registers, 148 user I/Os, and 126 Logic Array Blocks (LABs). It is fabricated on a low-cost, high-density, register-rich CMOS process and operates from a single 5 V supply, integrating multiple 32-bit bus interfaces in a single device for high pin-count applications.

An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that uses configurable logic blocks (CLBs) and programmable interconnects to implement custom digital circuits. In the broader taxonomy, FPGAs sit under programmable logic -> PLD -> logic IC -> semiconductor. The FLEX 8000 family was introduced in the mid-1990s as Altera's register-rich, in-circuit reconfigurable architecture, intended for glue logic, bus interfacing, and state-machine consolidation. Compared with CPLDs, FPGAs offer higher logic density but require SRAM configuration at every power-up, typically loaded from a serial configuration PROM such as the Altera EPC1, EPC1064, EPC1213, or EPC1441.

Key features of the EPF81188AQI208-4 include in-circuit reconfigurability (ICR), 148 programmable user I/Os, 6 dedicated clock input pins, JTAG-compliant boundary-scan test support, multiVolt I/O interface capability for 3.3 V and 5 V mixed systems, and a pin-compatible migration path across speed grades (-4, -3, -2). It is supported by the Altera MAX+plus II and Quartus design toolchains, and provides deterministic, register-rich architecture well suited to pipelined datapaths and high-speed state machines.

The architecture is built on continuous FastTrack interconnect rows and columns with SRAM configuration cells. Logic is implemented in Logic Elements (LEs) grouped into LABs, each containing 8 LEs with carry-chain and cascade support. Dedicated input registers and output registers per I/O pin simplify pipeline and registered I/O designs, and four low-skew global clock networks feed registers across the die.

Typical applications include 32-bit microprocessor glue logic and peripheral integration, PCI bus bridging and interface controllers, telecom line-card state machines, industrial control and instrumentation front-ends, DSP co-processing front-ends, and ASIC prototyping. The wide 5 V tolerant I/O and JTAG support make the device practical for legacy systems and migration from discrete TTL/CMOS logic.

When designing with this device, ensure that a serial configuration PROM is included on the board for SRAM-based configuration at every power-up, and that the nCONFIG, nSTATUS, and CONF_DONE signals are correctly pulled and monitored. MultiVolt I/O allows direct interface to 3.3 V peripherals from the 5 V core, simplifying mixed-voltage designs without external level shifters.

This page synthesizes distributor pricing, drop-in alternative MPNs from the same FLEX 8000 family, and practical design notes not consolidated on the manufacturer datasheet cover page.

Bộ thay thế dễ dàng lắp đặt cho EPF81188AQI208-4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.

Các biến thể trong loạt này

Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPF81188AQI208-4 (cùng hình factor và footprint) — khác nhau ở Mounting Type, Operating Temperature, Process Technology, In-Circuit Reconfigurability, Logic Family.

EPF81188AQC208-2

Altera

Mounting Type: Surface Mount

Operating Temperature: -40C to +85C (industrial / commercial grade)

Process Technology: CMOS, 0.42 um SRAM configuration cell

So sánh với EPF81188AQI208-4 →

EPF81188AQC208-3

Intel

Mounting Type: Surface Mount

Process Technology: CMOS SRAM

In-Circuit Reconfigurability: Yes (ICR)

So sánh với EPF81188AQI208-4 →

EPF81188AQC208-4

Intel

Mounting Type: Surface Mount (Gull-wing leads)

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

Process Technology: 0.42 µm CMOS

So sánh với EPF81188AQI208-4 →

EPF81188AQI208-3

Altera

Process Technology: 0.42 µm CMOS

In-Circuit Reconfigurability: Yes (ICR via external configuration device or controller)

So sánh với EPF81188AQI208-4 →

EPF81188AQI208-3

✅ Drop-In

Altera

📦 208-PQFP

FLEX 8000 · 12,000 · 1,008 cells · Up to 1,500 · 125 MHz · 5.0 ns · 0.42 µm CMOS · 5 V

Liên hệ để biết giá

Xem tài liệu →

EPF81188AQI208-2

✅ Drop-In

📦 208-PQFP

fastest speed grade (-2 vs -4) within same die and same 208-PQFP package

📋 Tham chiếu thay thế (không có trong danh mục)

EPF81188AQC208-4

✅ Drop-In

Intel

📦 208-PQFP

FLEX 8000 · FPGA - Field Programmable Gate Array · 12,000 · 1,008 · 126 · 148 · 125 MHz · 0.42 µm CMOS

Liên hệ để biết giá

Xem tài liệu →

EPF81188AQC208-3

✅ Drop-In

Intel

📦 208-PQFP

FLEX 8000 · CMOS · 12,000 · 1,008 · 126 · 148 · 208-BFQFP (Plastic QFP) · 208

Liên hệ để biết giá

Xem tài liệu →

EPF81188AQC208-2

✅ Drop-In

Altera

📦 208-PQFP

FLEX 8000 · 1008 · 12,000 · 126 · 148 · 282 to 1500 · 125 MHz · 5 V

Liên hệ để biết giá

Xem tài liệu →

EPF81188AQI208-4N

✅ Drop-In

📦 208-PQFP

same die, -4 speed grade, same 208-PQFP, N suffix denotes lead-free / RoHS finish

📋 Tham chiếu thay thế (không có trong danh mục)

EPF81188AQI208-4 Tỷ lệ tối đa & tính chất điện

Family	FLEX 8000
Logic Elements / Gates	Up to 16,000 usable gates
Registers (approx.)	1,500
Logic Array Blocks (LABs)	126
User I/Os	148
Hộp	208-pin PQFP (BFQFP, plastic, gull-wing)
Điện áp cung cấp	5 V
Logic Family	CMOS (SRAM-based)
Nhiệt độ hoạt động	0 C to +70 C (commercial)
Configuration Method	Serial PROM (EPC1/EPC1064/EPC1213/EPC1441) or parallel EPROM / microcontroller
In-Circuit Reconfigurability (ICR)	Yes
Boundary-Scan / JTAG	Yes (JTAG-compliant)
MultiVolt I/O Interface	Yes (supports 3.3 V and 5 V mixed systems)
Global Clock Networks	4 low-skew
Speed Grade	-4
Kiểu lắp đặt	Surface Mount (gull-wing PQFP)

Cấu hình chân EPF81188AQI208-4

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

Ứng dụng tiêu biểu

EPF81188AQI208-4 phù hợp cho 6 Áp dụngs: 32-bit Microprocessor Glue Logic, PCI Bus Bridge / Interface Controller, Telecom Line-Card State Machines, Industrial Control and Instrumentation Front-End, DSP Co-Processing Front-End, ASIC Prototyping and Logic Consolidation.

🖥️

32-bit Microprocessor Glue Logic

The EPF81188AQI208-4's 16,000 usable gates and 148 user I/Os make it a strong fit for 32-bit microprocessor glue-logic consolidation, where address decoding, wait-state generation, bus arbitration, and interrupt steering are absorbed into a single device instead of several discrete TTL packages. The four low-skew global clock networks and dedicated input/output registers per pin simplify pipelined microprocessor interfaces and registered chip-select generation, while MultiVolt I/O lets the 5 V core drive 3.3 V peripherals without external level shifters. Source: FLEX 8000 family datasheet.

Được đề xuất

EPC1 (Serial configuration PROM for FLEX 8000 SRAM-based FPGA) EPC1064 (Larger serial configuration PROM option) EPF81188AQI208-3 · Altera

🌐

PCI Bus Bridge / Interface Controller

With 148 user I/Os, the EPF81188AQI208-4 can absorb an entire 32-bit PCI bus bridge or interface controller plus peripheral state-machine logic in a single FLEX 8000 device. The register-rich architecture is well suited to the registered I/O and pipelined handshakes that PCI demands, and the JTAG-compliant boundary scan simplifies pre-production board bring-up. Power consumption at 5 V must be budgeted carefully because PCI designs often run near 50-66 MHz; the -3 or -2 speed grades offer tighter timing margin on the same footprint. Source: FLEX 8000 family datasheet.

Được đề xuất

EPC1213 (Serial configuration PROM for production PCI boards) EPF81188AQI208-3 · Altera

🌐

Telecom Line-Card State Machines

Telecom line cards traditionally depend on large register-rich programmable logic to handle framing, signalling, alarm monitoring, and switch-matrix interfacing. The EPF81188AQI208-4's 1,500 registers and 126 LABs provide the parallelism needed for these state machines, while the 148 I/Os absorb the high-pin-count glue between line-interface units, time-slot interchanges, and backplane connectors. In-circuit reconfigurability enables field firmware upgrades without board removal, a key benefit for carrier-grade telecom equipment.

Được đề xuất

EPC1441 (Compact serial configuration PROM for telecom cards) EPF81188AQC208-4 · Intel

🏭

Industrial Control and Instrumentation Front-End

The EPF81188AQI208-4 is widely used as a front-end controller in industrial instrumentation, where 16,000 usable gates are sufficient for sensor-signal conditioning sequencing, ADC/DAC control logic, and serial protocol state machines (SPI, I2C, UART). The 5 V MultiVolt I/O and JTAG bring-up simplify mixed-voltage designs with 3.3 V ADC/DAC devices. Engineers migrating older designs to industrial-temperature grades should verify that the chosen speed-grade variant supports the required ambient range; the AQI suffix denotes commercial temperature.

Được đề xuất

EPC1 (Standard serial configuration PROM) EPF81188AQI208-3 · Altera

🎧

DSP Co-Processing Front-End

The FLEX 8000 architecture's high register count makes the EPF81188AQI208-4 a useful front-end for DSP co-processors - handling data formatting, address generation, memory interfacing, and control sequencing ahead of a dedicated DSP or ASIC. The four global clock networks and dedicated I/O registers help maintain deterministic timing in pipelined datapaths, while the 148 I/Os expose wide data and address buses without external muxing.

Được đề xuất

EPC1064 (Larger serial configuration PROM for complex firmware) EPF81188AQI208-3 · Altera

🔧

ASIC Prototyping and Logic Consolidation

With 16,000 usable gates and in-circuit reconfigurability, the EPF81188AQI208-4 has long served as an ASIC prototyping vehicle and as a way to consolidate scattered TTL/CMOS logic into one programmable device. Designers can iterate firmware in-circuit, validate pinout assumptions before ASIC tape-out, and reuse the same board across multiple design revisions. The 208-pin PQFP package is friendly to standard 1.0 mm-pitch PCB fabrication, easing prototype assembly.

Được đề xuất

EPC1 (Standard serial configuration PROM) EPC1441 (Higher-density serial configuration PROM)

Tóm tắt các sản phẩm được đề xuất

EPC1 Serial configuration PROM for FLEX 8000 SRAM-based FPGA Được sử dụng trong: 32-bit Microprocessor Glue Logic, Industrial Control and Instrumentation Front-End, ASIC Prototyping and Logic Consolidation EPC1064 Larger serial configuration PROM option Được sử dụng trong: 32-bit Microprocessor Glue Logic, DSP Co-Processing Front-End EPF81188AQI208-3 Altera Được sử dụng trong: 32-bit Microprocessor Glue Logic, PCI Bus Bridge / Interface Controller, Industrial Control and Instrumentation Front-End, DSP Co-Processing Front-End EPC1213 Serial configuration PROM for production PCI boards Được sử dụng trong: PCI Bus Bridge / Interface Controller EPC1441 Compact serial configuration PROM for telecom cards Được sử dụng trong: Telecom Line-Card State Machines, ASIC Prototyping and Logic Consolidation EPF81188AQC208-4 Intel Được sử dụng trong: Telecom Line-Card State Machines

What is the EPF81188AQI208-4 and what family does it belong to?

The EPF81188AQI208-4 is a 5 V, SRAM-based Field Programmable Gate Array from the Altera FLEX 8000 family, now sold and supported under Intel. According to the manufacturer datasheet, the device provides up to 16,000 usable gates, approximately 1,500 registers, 126 LABs, and 148 user I/Os in a 208-pin PQFP (BFQFP) package. It is designed for high-density, register-rich glue logic, bus interfacing, and ASIC prototyping.

How many usable gates and I/Os does the EPF81188AQI208-4 have?

The EPF81188AQI208-4 provides up to 16,000 usable gates, approximately 1,500 registers, and 148 user I/Os. These figures come from the FLEX 8000 family datasheet and are the same across all speed grades and compatible 208-pin package variants. The 148 I/Os are particularly valuable for designs that must bridge multiple buses on a single device.

What is the difference between EPF81188AQI208-4 and EPF81188AQI208-3?

The EPF81188AQI208-4 and EPF81188AQI208-3 differ only in speed grade: -4 is the slowest, -3 is faster. Both share the same 208-pin PQFP package, the same die, and the same 16,000 usable gates / 148 I/O specification. Source: FLEX 8000 family datasheet. Designers can drop a -4 onto a -3 footprint and gain timing margin, but cannot drop a -3 onto a -4 board and recover timing if the original design assumed -4 timing.

How is the EPF81188AQI208-4 configured at power-up?

The EPF81188AQI208-4 is an SRAM-based FPGA and therefore requires configuration data on every power-up. Per the FLEX 8000 datasheet, configuration can be loaded from an industry-standard parallel EPROM, an Altera serial configuration device such as EPC1, EPC1064, EPC1213, or EPC1441, or from a system controller. Without a configuration source, the device remains unconfigured and all I/Os are tri-stated.

Does the EPF81188AQI208-4 support JTAG boundary scan?

Yes. The EPF81188AQI208-4 includes JTAG-compliant IEEE 1149.1 boundary-scan test logic. This allows board-level interconnect testing and is documented in the FLEX 8000 family datasheet. The JTAG pins (TDI, TDO, TMS, TCK) are dedicated and cannot be repurposed as user I/O, so leave them connected in any pinout-aware board layout.

Where can I download the EPF81188AQI208-4 datasheet PDF?

The EPF81188AQI208-4 datasheet PDF is available from the manufacturer product archive (formerly Altera, now Intel) and from authorized distributors. Octopart and FPGAkey host the document under their Intel / Altera part pages. Search the exact MPN string 'EPF81188AQI208-4' and look for the FLEX 8000 family datasheet, which contains full DC/AC specifications and pinout.

What is the pinout of the EPF81188AQI208-4?

The EPF81188AQI208-4 pinout is published in the FLEX 8000 family datasheet in the 208-pin PQFP package section. The package is a 208-lead Plastic Quad Flat Pack with gull-wing leads; pin 1 is located by the marker dot on the top surface. For full per-pin function tables including dedicated clock inputs (CLK0-CLK5), JTAG, and configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0), consult the manufacturer datasheet directly.

Is the EPF81188AQI208-4 still in production?

No. The EPF81188AQI208-4 is part of the legacy Altera FLEX 8000 family and has been classified as obsolete / not recommended for new designs by Intel. It remains available through authorized distributors stocking legacy inventory, brokers, and aftermarket channels. For new designs, Intel recommends migrating to the Cyclone, MAX, or other current FPGA families.

Where can I buy the EPF81188AQI208-4 today?

The EPF81188AQI208-4 can be sourced from authorized distributors carrying legacy Altera/Intel FPGA inventory, from broker channels, and from aftermarket specialists. As of 2026-09-12, listings appear on DigiKey, Mouser, Octopart, Avaq, and FPGAkey. Because the part is obsolete, pricing fluctuates with remaining stock and lead times may be longer than for active parts.

What is the price of the EPF81188AQI208-4?

As of 2026-09-12, distributor pricing for the EPF81188AQI208-4 typically starts in the high-tens of USD per unit at qty 1, with volume breaks reducing unit price below USD 30 at qty 100. Pricing varies because the part is obsolete and supply comes from remaining distributor stock and broker channels. Always request a fresh quote for current availability.

What is the lead time for the EPF81188AQI208-4?

Lead times for the obsolete EPF81188AQI208-4 are typically 4-12 weeks from broker and authorized distributor channels, depending on remaining stock. As of 2026-09-12, some distributors show immediate ship-from-stock for small quantities, but volume orders often require scheduled delivery from allocated wafer or finished-goods inventory. Always confirm lead time at order placement.

What is a drop-in replacement for the EPF81188AQI208-4?

The best drop-in replacements for the EPF81188AQI208-4 are the other speed grades of the same die in the same 208-pin PQFP package, such as EPF81188AQI208-3 and EPF81188AQI208-2. All share the same pinout, 16,000 usable gates, and 148 user I/Os. Source: FLEX 8000 family datasheet. Designers needing more headroom step down to -3 or -2; designers needing lower power may evaluate the EPF81188AGC232 variants which use a different 232-pin package and are not drop-in.

EPF81188AQI208-4 vs EPF81188AQI208-3 - which should I choose?

Choose the EPF81188AQI208-3 over the -4 if your timing closure requires the faster speed grade. Both parts are pin-compatible in the same 208-pin PQFP and share the same die, 16,000 gates, and 148 I/Os. Source: FLEX 8000 family datasheet. If your design meets timing on -4, the -4 is generally preferable because of better availability in the obsolete market; choose -3 only when timing margins require it.

Can the EPF81188AQC208-4 replace the EPF81188AQI208-4?

Yes, the EPF81188AQC208-4 is pin-compatible with the EPF81188AQI208-4 in the same 208-pin PQFP footprint. Source: FLEX 8000 family datasheet and the Site MPN list. The package letter difference (AQI vs AQC) denotes the operating-temperature grade: AQI is commercial (0 C to 70 C) while AQC is also commercial in this family; verify the exact temperature letter code on the manufacturer's datasheet before substituting in industrial-temperature designs.

What are the key specifications of EPF81188AQI208-4 that engineers should know?

The EPF81188AQI208-4 is a 5 V FLEX 8000 FPGA with up to 16,000 usable gates, 1,500 registers, 126 LABs, and 148 user I/Os in a 208-pin PQFP. Source: FLEX 8000 family datasheet. It supports in-circuit reconfigurability, JTAG boundary scan, MultiVolt I/O for 3.3 V / 5 V mixed systems, and four low-skew global clock networks. Engineers should remember that it is SRAM-based and therefore requires a configuration PROM at every power-up.

Dữ liệu tham khảo kỹ thuật cho EPF81188AQI208-4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.

Hướng dẫn chọn lựa

Choose the EPF81188AQI208-4 when you need a commercial-temperature, -4 speed grade FLEX 8000 FPGA in a 208-PQFP for legacy glue-logic, bus-interface, or ASIC-prototyping designs. Choose the EPF81188AQI208-3 if your timing closure requires faster internal logic on the exact same footprint; the -3 is the most common drop-in for designs that fail timing on the -4. Choose the EPF81188AQI208-2 only for the most aggressive timing budgets. Choose the EPF81188AQC208-4 if you want an alternative temperature-code marking but otherwise identical silicon. Choose the EPF81188AQI208-4N for RoHS-compliant assembly. For new designs, Intel recommends migrating to the Cyclone series; for modern high-volume replacements, consider Lattice or Microchip equivalent FPGAs - but those require board redesign and firmware port.

So sánh với các sản phẩm thay thế

Tham số	Sản phẩm này	EPF81188AQI208-3	EPF81188AQI208-2	EPF81188AQC208-4	EPF81188AQC208-3	EPF81188AQC208-2	EPF81188AQI208-4N
Brand	Intel (formerly Altera)	Intel (formerly Altera)	Intel (formerly Altera)	Intel (formerly Altera)	Intel (formerly Altera)	Intel (formerly Altera)	Intel (formerly Altera)
Package	208-PQFP (BFQFP)	208-PQFP - same	208-PQFP - same	208-PQFP - same	208-PQFP - same	208-PQFP - same	208-PQFP - same
Usable Gates	16,000	16,000	16,000	16,000	16,000	16,000	16,000
User I/Os	148	148	148	148	148	148	148
Logic Array Blocks (LABs)	126	126	126	126	126	126	126
Supply Voltage	5 V	5 V	5 V	5 V	5 V	5 V	5 V
Speed Grade	-4 (slowest)	-3 (faster)	-2 (fastest)	-4 (same)	-3	-2	-4 (same)
Operating Temperature	0 C to +70 C (commercial)	0 C to +70 C (commercial)	0 C to +70 C (commercial)	0 C to +70 C (commercial)	0 C to +70 C (commercial)	0 C to +70 C (commercial)	0 C to +70 C (commercial)

Bảo phân biệt quan trọng

Identical die, faster timing closure (vsEPF81188AQI208-3)
Identical die, fastest speed grade (vsEPF81188AQI208-2)
Same die, AQC temperature code variant (vsEPF81188AQC208-4)
Lead-free finish variant (vsEPF81188AQI208-4N)

Ghi chú thiết kế

The EPF81188AQI208-4 is SRAM-based and therefore loses its configuration when power is removed. Every board design must include a configuration source - typically an Altera EPC1, EPC1064, EPC1213, or EPC1441 serial configuration PROM, or a parallel EPROM plus microcontroller. Without this, the device remains unconfigured at power-up and all I/Os are tri-stated, which can look like a dead board during bring-up.

The 208-pin PQFP uses 1.0 mm lead pitch and gull-wing terminations, which is friendly to 4-layer FR-4 PCB fabrication. Provide a continuous ground plane on an inner layer directly beneath the package to control return paths for the many switching I/Os. Decouple each VCC pin with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, and add bulk decoupling (10-100 uF) at the board-level supply entry. The four low-skew global clock networks benefit from matched-length clock traces.

The 148 user I/Os can switch simultaneously and generate significant ground bounce on a poorly decoupled board. Source-synchronous interfaces (e.g., 32-bit buses with associated clocks) should be routed with matched trace lengths and 50 ohm characteristic impedance. If timing closure is tight, prefer the -3 or -2 speed grades on the same footprint rather than over-constraining the layout. MultiVolt I/O lets the 5 V core drive 3.3 V peripherals without external level shifters - confirm VCCIO bank voltage compatibility before mixing rails.

Thông tin tuân thủ

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

Không chì

Unknown

Không halogen

Unknown

Khoáng vật xung đột

Unknown

Part is obsolete (legacy Altera / Intel FLEX 8000 family). Specific RoHS / REACH compliance data not found in verified web data - the N-suffix variant (EPF81188AQI208-4N) typically denotes a lead-free finish, but RoHS certification status should be confirmed via the manufacturer's declaration letter. AEC-Q100 is not applicable to FPGAs in this legacy family.

Dữ liệu được xác minh vào: 2026-09-12 — dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART

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