EPF81188AQI208-3 - FLEX 8000 FPGA, 12K Gates, 208-Pin PQFP | Altera
MPN： EPF81188AQI208-3 ✗ 停產EPF81188AQI208-3 概覽
A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells that the designer can reconfigure after manufacture to implement arbitrary digital logic. Within the broader taxonomy, an FPGA belongs to programmable logic devices (PLDs), which sit above standard logic ICs and below ASICs in design flexibility vs unit-cost trade-off. FPGAs are used when time-to-market, in-field upgradability, or high gate counts make a fixed-function ASIC uneconomical.
Key features of the EPF81188AQI208-3 include in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, a register-rich architecture with up to 1,500 registers for sequential logic density, JTAG boundary-scan test support per IEEE 1149.1, and multi-voltage I/O that simplifies interfacing to legacy 5V buses. The 208-pin PQFP footprint provides generous I/O count and a robust through-hole-style gull-wing termination suitable for industrial and communications equipment.
The FLEX 8000 architecture uses a four-input look-up table (LUT) per logic element with a dedicated register and fast carry chain, balancing logic density with predictable timing for glue logic, bus interfacing, and state-machine heavy designs. The 0.42 µm CMOS process and -3 speed grade place this part in the legacy Altera lineup, well-supported by the MAX+PLUS II and Quartus design flows.
Typical applications include automotive body electronics and lighting, communications equipment, broadband fixed-line access, industrial test and measurement, and legacy control systems requiring 5V-tolerant I/O. It is also seen in board-level glue logic for telecom backplane designs.
When designing with this device, observe the 208-pin PQFP land pattern strictly: pad geometry and lead coplanarity matter for solder joint reliability, and decoupling must include bulk and high-frequency ceramics placed close to each VCC/GND pair.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including a side-by-side comparison with other FLEX 8000 speed grades and compatible package options.
直接替換替代品，適用於 EPF81188AQI208-3 — 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： EPF81188AQI208-3 （相同外形與佔位） — 差異在於 Process Technology, Package, Mounting Type, Operating Temperature, In-Circuit Reconfigurability.
EPF81188AQI208-2
✅ 直接替換📋 參考替代品（不在目錄中）
EPF81188AQI208-4
✅ 直接替換聯絡詢價
查看資料表 →EPF81188AQC208-3
✅ 直接替換聯絡詢價
查看資料表 →EPF81188AQC208-2
✅ 直接替換聯絡詢價
查看資料表 →EPF81188AQC208-4
✅ 直接替換聯絡詢價
查看資料表 →EPF81188AQI208-3 最大額定值與電氣特性
| Family | FLEX 8000 |
| Usable Gates | 12,000 |
| Logic Elements | 1,008 cells |
| Registers | Up to 1,500 |
| Maximum Operating Frequency | 125 MHz |
| Typical Propagation Delay | 5.0 ns |
| Process Technology | 0.42 µm CMOS |
| Supply Voltage (Core) | 5 V |
| I/O Voltage Compatibility | 3.3 V / 5 V |
| 腳位數 | 208 |
| Package Type | PQFP (FQFP, gull-wing) |
| Package Code | FQFP |
| Terminal Form | Gull Wing |
| Configurable I/O | 148 |
| Temperature Grade | Industrial |
| In-Circuit Reconfigurability | Yes (ICR via external configuration device or controller) |
| Boundary-Scan Support | JTAG (IEEE 1149.1) |
EPF81188AQI208-3 fqfp 腳位配置指南
EPF81188AQI208-3（fqfp 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： EPF81188AQI208-3.
請參閱 資料表 以查看完整腳位配置。
典型應用
EPF81188AQI208-3 適用於 6 應用s: Industrial Test & Measurement Equipment, Automotive Body Electronics & Lighting, Telecom Backplane Glue Logic, Broadband Fixed-Line Access Equipment, Board-Level Glue Logic Replacement, Communications Equipment - General.
Industrial Test & Measurement Equipment
The EPF81188AQI208-3's 5V core supply, industrial temperature grade (-40C to +85C), and 148 configurable I/O pins make it a strong fit for legacy test and measurement backplanes that aggregate many sensor and actuator signals. Its 125 MHz internal clock and 5.0 ns typical propagation delay accommodate timing-sensitive measurement sequences, while JTAG IEEE 1149.1 boundary scan simplifies board-level test access in production. Compared to modern 3.3V FPGAs, the EPF81188AQI208-3 interfaces directly to 5V analog front-ends without level shifters, reducing BOM cost and signal-chain noise.
推薦
Automotive Body Electronics & Lighting
Body controllers and lighting modules that pre-date CAN-FD and modern microcontrollers often rely on FLEX 8000 logic for signal multiplexing, PWM generation, and fault handling. The EPF81188AQI208-3's 12K usable gates provide enough capacity for multiple lighting zones, while 5V I/O compatibility simplifies interfacing to legacy body-control sensors and actuators that operate at 5V levels. Its industrial temperature grade is appropriate for under-hood and cabin environments, and the 208-pin PQFP supports the high pin count required for multi-channel lighting and switch-scan matrices.
推薦
Telecom Backplane Glue Logic
Legacy telecom backplanes frequently use FLEX 8000 devices for TDM bus multiplexing, framing, and clock distribution. The EPF81188AQI208-3's 148 user I/O pins accommodate dense parallel bus interfaces, while 5V I/O compatibility matches older line-card ASICs without additional level translation. Its in-circuit reconfigurability allows remote firmware updates for field upgrades, and JTAG support simplifies in-system test of populated backplanes. The 208-pin PQFP is rugged enough for the thermal cycling seen in central-office equipment.
推薦
Broadband Fixed-Line Access Equipment
DSLAM line cards, optical-network terminators, and other broadband fixed-line access products in service through the early 2000s used FLEX 8000 devices for ATM/Ethernet adaptation and line-card control. The EPF81188AQI208-3's 12K-gate capacity fits mid-density adaptation logic, and its 5V I/O directly interfaces to legacy serializer/deserializer ASICs used in those designs. The PQFP-208 package supports the high signal count needed for multi-port line cards, while industrial temperature grade handles outdoor-cabinet deployments.
推薦
Board-Level Glue Logic Replacement
Engineers replacing multiple discrete 74-series logic ICs with a single programmable device often turn to the EPF81188AQI208-3 to consolidate address decoding, bus arbitration, and interrupt steering into one chip. Its 12K usable gates replace dozens of MSI parts, and 148 user I/O accommodate wide address and data buses. Industrial temperature grade and 5V I/O match TTL/CMOS logic levels directly. The 208-pin PQFP package is available through surplus channels for legacy board redesigns that must retain the existing footprint.
推薦
Communications Equipment - General
General communications equipment - including base-station controllers, satellite ground-station modems, and legacy protocol converters - frequently uses the EPF81188AQI208-3 as a flexible protocol engine. The device's 5.0 ns typical propagation delay supports high-speed serial protocol framing, while 148 I/O permit connection to multiple PHY devices. In-circuit reconfigurability allows field upgrades of protocol stacks, and the JTAG interface supports production boundary-scan test. Industrial temperature grade handles outdoor and uncontrolled-environment deployments common in telecom infrastructure.
推薦
推薦產品摘要
工程參考資料，適用於 EPF81188AQI208-3 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EPF81188AQI208-2 | EPF81188AQI208-4 | EPF81188AQC208-3 | EPF81188AQC208-2 | EPF81188AQC208-4 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | PQFP-208 (FQFP, gull-wing) | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Speed Grade | -3 (5.0 ns Tpd, 125 MHz) | -2 (faster, ~4.0 ns) | -4 (slower, ~7.5 ns) | -3 (same) | -2 (faster) | -4 (slower) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (same) | Industrial (same) | Commercial (0C to +70C) | Commercial | Commercial |
| Usable Gates | 12,000 | 12,000 | 12,000 | 12,000 | 12,000 | 12,000 |
| Logic Elements | 1,008 | 1,008 | 1,008 | 1,008 | 1,008 | 1,008 |
| Configurable I/O | 148 | 148 | 148 | 148 | 148 | 148 |
| Core Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| I/O Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
主要差異化特點
- Industrial temperature grade in PQFP-208 footprint (對比EPF81188AQC208-3)
- Balanced speed/cost trade-off at -3 speed grade (對比EPF81188AQI208-2)
- 5V native I/O without external level shifters (對比EPF81188AQC240-3 (different package))
設計說明
Estimated: at 5V core supply and typical 5% VCCIO usage across 148 I/O, the EPF81188AQI208-3 can draw 200-500 mA during configuration and active operation. Use a 4-layer PCB with a dedicated VCC plane and place 0.1 µF X7R ceramic decoupling capacitors within 5 mm of every VCC/VCCIO/VCCINT pin pair. Add bulk tantalum or polymer capacitors (22-47 µF) at each voltage-rail entry point to suppress the inrush current during configuration bitstream loading.
Estimated: at full I/O toggle (148 outputs, 20 pF load, 50 MHz) the EPF81188AQI208-3 dissipates roughly 1.5-2.0 W. The PQFP-208 package does not have an exposed pad, so thermal relief relies entirely on PCB copper pour. Provide a copper area of at least 4 square inches on the top layer beneath the device, with thermal vias to inner ground planes. For sealed enclosures, derate junction temperature by 10-15C from the 85C industrial limit.
The 208-pin PQFP gull-wing lead pitch is 0.5 mm; solder pad length should be 1.5-2.0 mm with 0.1 mm stencil aperture for lead-free reflow. Use a no-clean SAC305 paste and follow the J-STD-020 moisture sensitivity level (MSL) handling procedure - PQFP packages are typically MSL 3. Lead coplanarity must be within 0.08 mm for reliable solder joint formation. Place configuration EEPROM (e.g., EPC2 or EPC8) within 50 mm of the FPGA's DATA0/DCLK/nCONFIG pins to keep configuration traces short.
Do not confuse the EPF81188AQI208-3 (208-pin PQFP, industrial grade) with EPF81188AQC240-3 (240-pin PQFP, commercial grade) - the different pin counts make them NOT pin-compatible despite the same die. Verify that the JTAG chain order matches the BSDL file for the FLEX 8000 family, especially when mixing FLEX 8000 with FLEX 10K or MAX devices on the same scan chain. Finally, ensure the configuration mode (PS, AS, JTAG) is correctly selected via MSEL pins before power-up, as misconfiguration can prevent the device from entering user mode.
Estimated: 5V CMOS I/O on the EPF81188AQI208-3 has typical edge rates of 2-3 ns; long parallel buses (>50 mm) should be series-terminated with 33 ohm resistors to damp reflections. Keep clock traces on inner signal layers with continuous ground reference; use 4-layer stack-up with ground plane directly beneath the FPGA. For multi-FPGA designs sharing a configuration bus, add 100 ohm series resistors at each FPGA's DCLK pin to isolate configuration clock loading.
合規資訊
RoHS, REACH, lead-free, halogen-free, and conflict-minerals status could not be confirmed from the verified web data; original FLEX 8000 family parts pre-date widespread RoHS compliance requirements and many PQFP variants are non-RoHS. AEC-Q100 not qualified - this is an industrial-grade (not automotive-grade) part.
