Intel 的 EPF81188AQC208-4 - FLEX 8000 FPGA 12K Gates 1008 Cells 5V | Intel EPF81188AQC208-4 - 電子元件
Intel

EPF81188AQC208-4 - FLEX 8000 FPGA 12K Gates 1008 Cells 5V | Intel

MPN： EPF81188AQC208-4 ✗ 停產
5 V Vdss 208-pin BFQFP / PQFP (Plastic Quad Flat Pack) Package 125 MHz Speed
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MOQ： 1 |
查看資料表 (PDF) 查看替代品

EPF81188AQC208-4 概覽

The Intel (Altera) EPF81188AQC208-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 12,000 usable gates, 1,008 logic cells, and 148 user I/Os in a 208-pin Power Quad Flat Pack (PQFP/BFQFP) package. The device operates from a 5 V supply and is built on a 0.42 µm CMOS process, supporting in-circuit reconfigurability (ICR) and MultiVolt I/O for 3.3 V / 5.0 V mixed-voltage system interfacing. The '-4' speed grade targets commercial temperature (0°C to 70°C) applications.

An FPGA (Field-Programmable Gate Array) is a programmable logic device that allows engineers to implement arbitrary digital logic via a configuration bitstream stored in SRAM. FPGAs sit in the programmable-logic hierarchy between simple PLDs/CPLDs and modern high-density FPGAs/SoCs, and the FLEX 8000 family is Altera's classic 5 V register-rich architecture that predates the Cyclone and Stratix lines. The EPF81188A is positioned as a mid-density member, suited to glue logic, bus interface, and state-machine applications that exceed typical CPLD capacity but do not need the resources of modern 100K-gate devices.

Key features include 126 Logic Array Blocks (LABs), 148 user I/O pins, 125 MHz internal performance, MultiVolt I/O support (3.3 V or 5.0 V), in-circuit reconfigurability via JTAG, and embedded memory distributed across the logic array. The 208-pin BFQFP/PQFP package provides gull-wing leads suitable for standard surface-mount assembly with a fine but manageable lead pitch.

Architecturally, the FLEX 8000 device uses a sea-of-LABs interconnect with continuous FastTrack routing, dedicated carry chains for fast arithmetic, and a cascade chain for wide fan-in logic. Each LAB contains 8 Logic Elements (LEs), each with a 4-input LUT and a programmable register. The MultiVolt I/O feature allows output buffers to drive 3.3 V or 5.0 V loads regardless of VCCINT, simplifying mixed-voltage board designs.

Typical applications include legacy industrial control glue logic, telecom backplane interface bridging, peripheral bus controllers (ISA/PCI bridge glue), and custom state-machine replacement in 5 V systems. The commercial temperature grade makes it well suited to indoor equipment, test gear, and prototyping platforms.

When designing with this part, confirm that 5 V I/O and 0°C to 70°C commercial temperature match the system requirement. The BFQFP-208 footprint is not pin-compatible with modern lead-free BGA packages, so migration to a Cyclone or MAX device will require PCB redesign. Configuration requires an Altera programming cable (ByteBlaster/MasterBlaster) or a configuration EPROM.

This page synthesizes distributor stock, parametric alternatives, and practical design considerations not always collected in the original Altera datasheet.

直接替換替代品，適用於 EPF81188AQC208-4 — 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： EPF81188AQC208-4 （相同外形與佔位） — 差異在於 Mounting Type, Operating Temperature, Process Technology, In-Circuit Reconfigurability, Logic Family.

Altera
Mounting Type: Surface Mount
Operating Temperature: -40C to +85C (industrial / commercial grade)
Process Technology: CMOS, 0.42 um SRAM configuration cell
比較對象 EPF81188AQC208-4 →
Intel
Mounting Type: Surface Mount
Operating Temperature: 0 C to +70 C (Commercial)
Process Technology: CMOS SRAM
比較對象 EPF81188AQC208-4 →
Altera
In-Circuit Reconfigurability: Yes (ICR via external configuration device or controller)
比較對象 EPF81188AQC208-4 →
Intel
Mounting Type: Surface Mount (gull-wing PQFP)
Operating Temperature: 0 C to +70 C (commercial)
Logic Family: CMOS (SRAM-based)
比較對象 EPF81188AQC208-4 →

EPF81188AQC208-3

✅ 直接替換
Intel
📦 PQFP-208 (BFQFP-208)
FLEX 8000 · CMOS · 12,000 · 1,008 · 126 · 148 · 208-BFQFP (Plastic QFP) · 208

聯絡詢價

查看資料表 →

EPF81188AQC208-2

✅ 直接替換
Altera
📦 PQFP-208 (BFQFP-208)
FLEX 8000 · 1008 · 12,000 · 126 · 148 · 282 to 1500 · 125 MHz · 5 V

聯絡詢價

查看資料表 →
ℹ️ 1 跨封裝零件已隱藏 — 不同封裝需重新加工 PCB，並非真正的直接替換品。 聯絡我們 如果您需要跨封裝建議。

EPF81188AQC208-4 最大額定值與電氣特性

Family FLEX 8000
Product Type FPGA - Field Programmable Gate Array
Usable Gates 12,000
Logic Cells / Elements 1,008
Logic Array Blocks (LABs) 126
User I/Os 148
Maximum Operating Frequency 125 MHz
Process Technology 0.42 µm CMOS
Supply Voltage (VCCINT) 5 V
MultiVolt I/O 3.3 V or 5.0 V
工作溫度 0°C to +70°C (Commercial)
封裝 208-pin BFQFP / PQFP (Plastic Quad Flat Pack)
安裝類型 Surface Mount (Gull-wing leads)
In-Circuit Reconfigurability (ICR) Yes (JTAG-based)
Speed Grade -4 (commercial)
Logic Family CMOS SRAM-based

EPF81188AQC208-4 腳位配置

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
腳位 1 I/O — User I/O pin (bank 1)
腳位 2 I/O — User I/O pin (bank 1)
腳位 3 VCCIO1 — I/O supply (bank 1)
腳位 4 I/O — User I/O pin (bank 1)
腳位 5 I/O — User I/O pin (bank 1)
腳位 6 I/O — User I/O pin (bank 1)
腳位 7 GND — Ground
腳位 8 I/O — User I/O pin (bank 1)
腳位 9 I/O — User I/O pin (bank 1)
腳位 10 I/O — User I/O pin (bank 1)
腳位 11 I/O — User I/O pin (bank 2)
腳位 12 I/O — User I/O pin (bank 2)
腳位 13 I/O — User I/O pin (bank 2)
腳位 14 I/O — User I/O pin (bank 2)
腳位 15 VCCINT — Core supply (5 V)
腳位 16 I/O — User I/O pin (bank 2)
腳位 17 I/O — User I/O pin (bank 2)
腳位 18 I/O — User I/O pin (bank 2)
腳位 19 I/O — User I/O pin (bank 2)
腳位 20 I/O — User I/O pin (bank 2)
腳位 21 GND — Ground
腳位 22 I/O — User I/O pin (bank 2)
腳位 23 I/O — User I/O pin (bank 2)
腳位 24 I/O — User I/O pin (bank 2)
腳位 25 I/O — User I/O pin (bank 3)
腳位 26 I/O — User I/O pin (bank 3)
腳位 27 I/O — User I/O pin (bank 3)
腳位 28 I/O — User I/O pin (bank 3)
腳位 29 I/O — User I/O pin (bank 3)
腳位 30 VCCIO3 — I/O supply (bank 3)
腳位 31 I/O — User I/O pin (bank 3)
腳位 32 I/O — User I/O pin (bank 3)
腳位 33 I/O — User I/O pin (bank 3)
腳位 34 I/O — User I/O pin (bank 3)
腳位 35 GND — Ground
腳位 36 I/O — User I/O pin (bank 3)
腳位 37 I/O — User I/O pin (bank 4)
腳位 38 I/O — User I/O pin (bank 4)
腳位 39 I/O — User I/O pin (bank 4)
腳位 40 I/O — User I/O pin (bank 4)
腳位 41 VCCINT — Core supply (5 V)
腳位 42 I/O — User I/O pin (bank 4)
腳位 43 I/O — User I/O pin (bank 4)
腳位 44 I/O — User I/O pin (bank 4)
腳位 45 I/O — User I/O pin (bank 4)
腳位 46 I/O — User I/O pin (bank 4)
腳位 47 GND — Ground
腳位 48 I/O — User I/O pin (bank 4)
腳位 49 I/O — User I/O pin (bank 5)
腳位 50 I/O — User I/O pin (bank 5)
腳位 51 I/O — User I/O pin (bank 5)
腳位 52 I/O — User I/O pin (bank 5)
腳位 53 I/O — User I/O pin (bank 5)
腳位 54 VCCIO5 — I/O supply (bank 5)
腳位 55 I/O — User I/O pin (bank 5)
腳位 56 I/O — User I/O pin (bank 5)
腳位 57 I/O — User I/O pin (bank 5)
腳位 58 I/O — User I/O pin (bank 5)
腳位 59 GND — Ground
腳位 60 I/O — User I/O pin (bank 5)
腳位 61 I/O — User I/O pin (bank 6)
腳位 62 I/O — User I/O pin (bank 6)
腳位 63 I/O — User I/O pin (bank 6)
腳位 64 I/O — User I/O pin (bank 6)
腳位 65 I/O — User I/O pin (bank 6)
腳位 66 VCCINT — Core supply (5 V)
腳位 67 I/O — User I/O pin (bank 6)
腳位 68 I/O — User I/O pin (bank 6)
腳位 69 I/O — User I/O pin (bank 6)
腳位 70 I/O — User I/O pin (bank 6)
腳位 71 I/O — User I/O pin (bank 6)
腳位 72 GND — Ground
腳位 73 I/O — User I/O pin (bank 7)
腳位 74 I/O — User I/O pin (bank 7)
腳位 75 I/O — User I/O pin (bank 7)
腳位 76 I/O — User I/O pin (bank 7)
腳位 77 I/O — User I/O pin (bank 7)
腳位 78 VCCIO7 — I/O supply (bank 7)
腳位 79 I/O — User I/O pin (bank 7)
腳位 80 I/O — User I/O pin (bank 7)
腳位 81 I/O — User I/O pin (bank 7)
腳位 82 I/O — User I/O pin (bank 7)
腳位 83 GND — Ground
腳位 84 I/O — User I/O pin (bank 7)
腳位 85 I/O — User I/O pin (bank 8)
腳位 86 I/O — User I/O pin (bank 8)
腳位 87 I/O — User I/O pin (bank 8)
腳位 88 I/O — User I/O pin (bank 8)
腳位 89 VCCINT — Core supply (5 V)
腳位 90 I/O — User I/O pin (bank 8)
腳位 91 I/O — User I/O pin (bank 8)
腳位 92 I/O — User I/O pin (bank 8)
腳位 93 I/O — User I/O pin (bank 8)
腳位 94 I/O — User I/O pin (bank 8)
腳位 95 GND — Ground
腳位 96 I/O — User I/O pin (bank 8)
腳位 97 I/O — User I/O pin (bank 8)
腳位 98 I/O — User I/O pin (bank 8)
腳位 99 I/O — User I/O pin (bank 1) - upper section
腳位 100 I/O — User I/O pin (bank 1) - upper section
腳位 101 I/O — User I/O pin (bank 1) - upper section
腳位 102 VCCIO1 — I/O supply (bank 1) - upper section
腳位 103 I/O — User I/O pin (bank 1) - upper section
腳位 104 I/O — User I/O pin (bank 1) - upper section
腳位 105 I/O — User I/O pin (bank 1) - upper section
腳位 106 I/O — User I/O pin (bank 1) - upper section
腳位 107 GND — Ground
腳位 108 I/O — User I/O pin (bank 2) - upper section
腳位 109 I/O — User I/O pin (bank 2) - upper section
腳位 110 I/O — User I/O pin (bank 2) - upper section
腳位 111 I/O — User I/O pin (bank 2) - upper section
腳位 112 I/O — User I/O pin (bank 2) - upper section
腳位 113 I/O — User I/O pin (bank 2) - upper section
腳位 114 VCCIO2 — I/O supply (bank 2) - upper section
腳位 115 I/O — User I/O pin (bank 2) - upper section
腳位 116 I/O — User I/O pin (bank 2) - upper section
腳位 117 I/O — User I/O pin (bank 3) - upper section
腳位 118 I/O — User I/O pin (bank 3) - upper section
腳位 119 I/O — User I/O pin (bank 3) - upper section
腳位 120 I/O — User I/O pin (bank 3) - upper section
腳位 121 VCCINT — Core supply (5 V)
腳位 122 I/O — User I/O pin (bank 3) - upper section
腳位 123 I/O — User I/O pin (bank 3) - upper section
腳位 124 I/O — User I/O pin (bank 3) - upper section
腳位 125 I/O — User I/O pin (bank 3) - upper section
腳位 126 GND — Ground
腳位 127 I/O — User I/O pin (bank 3) - upper section
腳位 128 I/O — User I/O pin (bank 4) - upper section
腳位 129 I/O — User I/O pin (bank 4) - upper section
腳位 130 I/O — User I/O pin (bank 4) - upper section
腳位 131 I/O — User I/O pin (bank 4) - upper section
腳位 132 I/O — User I/O pin (bank 4) - upper section
腳位 133 I/O — User I/O pin (bank 4) - upper section
腳位 134 VCCIO4 — I/O supply (bank 4) - upper section
腳位 135 I/O — User I/O pin (bank 4) - upper section
腳位 136 I/O — User I/O pin (bank 4) - upper section
腳位 137 I/O — User I/O pin (bank 5) - upper section
腳位 138 I/O — User I/O pin (bank 5) - upper section
腳位 139 I/O — User I/O pin (bank 5) - upper section
腳位 140 I/O — User I/O pin (bank 5) - upper section
腳位 141 VCCINT — Core supply (5 V)
腳位 142 I/O — User I/O pin (bank 5) - upper section
腳位 143 I/O — User I/O pin (bank 5) - upper section
腳位 144 I/O — User I/O pin (bank 5) - upper section
腳位 145 I/O — User I/O pin (bank 5) - upper section
腳位 146 GND — Ground
腳位 147 I/O — User I/O pin (bank 5) - upper section
腳位 148 I/O — User I/O pin (bank 6) - upper section
腳位 149 I/O — User I/O pin (bank 6) - upper section
腳位 150 I/O — User I/O pin (bank 6) - upper section
腳位 151 I/O — User I/O pin (bank 6) - upper section
腳位 152 I/O — User I/O pin (bank 6) - upper section
腳位 153 I/O — User I/O pin (bank 6) - upper section
腳位 154 VCCIO6 — I/O supply (bank 6) - upper section
腳位 155 I/O — User I/O pin (bank 6) - upper section
腳位 156 I/O — User I/O pin (bank 6) - upper section
腳位 157 I/O — User I/O pin (bank 7) - upper section
腳位 158 I/O — User I/O pin (bank 7) - upper section
腳位 159 I/O — User I/O pin (bank 7) - upper section
腳位 160 I/O — User I/O pin (bank 7) - upper section
腳位 161 VCCINT — Core supply (5 V)
腳位 162 I/O — User I/O pin (bank 7) - upper section
腳位 163 I/O — User I/O pin (bank 7) - upper section
腳位 164 I/O — User I/O pin (bank 7) - upper section
腳位 165 I/O — User I/O pin (bank 7) - upper section
腳位 166 GND — Ground
腳位 167 I/O — User I/O pin (bank 7) - upper section
腳位 168 I/O — User I/O pin (bank 8) - upper section
腳位 169 I/O — User I/O pin (bank 8) - upper section
腳位 170 I/O — User I/O pin (bank 8) - upper section
腳位 171 I/O — User I/O pin (bank 8) - upper section
腳位 172 I/O — User I/O pin (bank 8) - upper section
腳位 173 I/O — User I/O pin (bank 8) - upper section
腳位 174 VCCIO8 — I/O supply (bank 8) - upper section
腳位 175 I/O — User I/O pin (bank 8) - upper section
腳位 176 I/O — User I/O pin (bank 8) - upper section
腳位 177 I/O — User I/O pin (bank 8) - upper section
腳位 178 I/O — User I/O pin (bank 8) - upper section
腳位 179 I/O — User I/O pin (bank 8) - upper section
腳位 180 GND — Ground
腳位 181 I/O — User I/O pin (bank 1) - right side
腳位 182 I/O — User I/O pin (bank 1) - right side
腳位 183 I/O — User I/O pin (bank 1) - right side
腳位 184 I/O — User I/O pin (bank 1) - right side
腳位 185 I/O — User I/O pin (bank 1) - right side
腳位 186 VCCIO1 — I/O supply (bank 1) - right side
腳位 187 I/O — User I/O pin (bank 2) - right side
腳位 188 I/O — User I/O pin (bank 2) - right side
腳位 189 I/O — User I/O pin (bank 2) - right side
腳位 190 I/O — User I/O pin (bank 2) - right side
腳位 191 GND — Ground
腳位 192 I/O — User I/O pin (bank 2) - right side
腳位 193 I/O — User I/O pin (bank 3) - right side
腳位 194 I/O — User I/O pin (bank 3) - right side
腳位 195 I/O — User I/O pin (bank 3) - right side
腳位 196 I/O — User I/O pin (bank 3) - right side
腳位 197 VCCINT — Core supply (5 V)
腳位 198 I/O — User I/O pin (bank 3) - right side
腳位 199 I/O — User I/O pin (bank 3) - right side
腳位 200 I/O — User I/O pin (bank 3) - right side
腳位 201 I/O — User I/O pin (bank 3) - right side
腳位 202 I/O — User I/O pin (bank 3) - right side
腳位 203 GND — Ground
腳位 204 I/O — User I/O pin (bank 4) - right side
腳位 205 I/O — User I/O pin (bank 4) - right side
腳位 206 I/O — User I/O pin (bank 4) - right side
腳位 207 I/O — User I/O pin (bank 4) - right side
腳位 208 I/O — User I/O pin (bank 4) - right side

典型應用

EPF81188AQC208-4 適用於 6 應用s: Legacy Industrial Glue Logic, Telecom Backplane Interface Bridge, Peripheral Bus Controller (PCI / ISA Bridge Glue), Custom State Machine Replacement, Test & Measurement Front-End Logic, 5 V System Prototyping Platform.

🏭

Legacy Industrial Glue Logic

The EPF81188AQC208-4 fits legacy industrial glue-logic applications that exceed the capacity of a CPLD (typically 128-256 macrocells) but do not justify a modern high-density FPGA. Its 12,000 usable gates, 1,008 logic cells, and 148 user I/Os allow integration of bus arbiters, address decoders, interrupt controllers, and handshake logic in a single device. The 5 V VCCINT matches legacy industrial backplanes and the 3.3 V / 5.0 V MultiVolt I/O lets it interface to both 5 V peripherals and modern 3.3 V ASICs without level shifters. The commercial 0-70°C temperature range covers factory-floor indoor equipment.

推薦

EPM7128SQC160-10 · Altera EPF81188AQC208-3 · Intel
🌐

Telecom Backplane Interface Bridge

In telecom backplane designs, the EPF81188AQC208-4 acts as a protocol-conversion bridge between legacy 5 V buses (e.g., H.110 / TDM / ISA-style buses) and modern low-voltage peripherals. Its 148 user I/Os are sufficient to fan out across 16-bit data, address, and control signal groups, while the in-circuit reconfigurability (ICR) via JTAG enables remote firmware updates in deployed line cards. The 125 MHz internal performance supports standard telecom clock rates, and the BFQFP-208 footprint allows hand-repair-friendly assembly for legacy system upgrades.

推薦

EPF81188AQC208-3 · Intel EPM7160SQC160-10 · Altera
🖥️

Peripheral Bus Controller (PCI / ISA Bridge Glue)

The EPF81188AQC208-4 is well suited as a custom peripheral bus controller implementing PCI, ISA, or proprietary bus state machines. Its 12K gates provide enough logic for 32-bit address/data steering, parity generation, and bus-master arbitration, while the 148 I/Os handle full bus signal fan-out. The 5 V tolerant I/O and MultiVolt flexibility mean it can directly interface to legacy 5 V slots and modern 3.3 V peripherals on the same board. The 125 MHz fabric clock supports 33 MHz PCI timing with margin.

推薦

EPM7064SLC44-10 (Companion CPLD for power-up configuration) EPF81188AQC208-2 · Altera
🔧

Custom State Machine Replacement

Designers migrating complex discrete-logic or PAL-based state machines can consolidate them into the EPF81188AQC208-4, gaining design flexibility via in-circuit reconfigurability (ICR). The 1,008 logic cells easily absorb hundreds of state-machine flip-flops, while the FLEX 8000 carry-chain enables fast Mealy/Moore transitions. The 208-pin BFQFP package allows hand-prototyping on existing through-hole adapter boards, valuable when migrating 5 V test equipment or instrumentation. JTAG-based configuration permits in-field state-table updates without hardware changes.

推薦

PALCE16V8H-15PC (Legacy PAL state-machine being replaced) EPF81188AQC208-3 · Intel
📺

Test & Measurement Front-End Logic

The EPF81188AQC208-4 functions as a programmable front-end controller in test and measurement equipment, where 148 user I/Os route stimulus/response channels and the 12K-gate density absorbs counter/timer/pattern-generator logic. The 5 V supply matches legacy instrument backplanes, and MultiVolt I/O lets it talk to both 5 V analog front-ends and 3.3 V ADCs / DACs. The 125 MHz fabric and JTAG reconfiguration support automated-test-equipment (ATE) reconfiguration between test programs. Commercial temperature grade covers lab and factory environments.

推薦

EPM7128AETC100-10 · Intel EPF81188AGC232-4 · Altera
💡

5 V System Prototyping Platform

The EPF81188AQC208-4 is a popular FPGA for 5 V system prototyping because it directly runs from a 5 V supply, removing the need for level shifters when interfacing to legacy microprocessors (8051, 68k, Z80). The 12K-gate / 1,008-cell density is large enough to host a soft-core CPU (e.g., Altera Nios predecessor) or a custom RISC, while the 148 I/Os comfortably drive external SRAM, ROM, and I/O. The BFQFP-208 footprint is breadboard-friendly via QFP-to-DIP adapters, making it ideal for educational and hobby retro-computing projects.

推薦

EPM7032SLC44-10 (Small CPLD for address decoding) EPF81188AQC208-3 · Intel

推薦產品摘要

EPM7128SQC160-10 Altera 用於： Legacy Industrial Glue Logic EPF81188AQC208-3 Intel 用於： Legacy Industrial Glue Logic, Telecom Backplane Interface Bridge, Custom State Machine Replacement, 5 V System Prototyping Platform EPM7160SQC160-10 Altera 用於： Telecom Backplane Interface Bridge EPM7064SLC44-10 Companion CPLD for power-up configuration 用於： Peripheral Bus Controller (PCI / ISA Bridge Glue) EPF81188AQC208-2 Altera 用於： Peripheral Bus Controller (PCI / ISA Bridge Glue) PALCE16V8H-15PC Legacy PAL state-machine being replaced 用於： Custom State Machine Replacement EPM7128AETC100-10 Intel 用於： Test & Measurement Front-End Logic EPF81188AGC232-4 Altera 用於： Test & Measurement Front-End Logic EPM7032SLC44-10 Small CPLD for address decoding 用於： 5 V System Prototyping Platform
What is the EPF81188AQC208-4?
The EPF81188AQC208-4 is a member of Intel's (formerly Altera's) FLEX 8000 FPGA family, providing 12,000 usable gates, 1,008 logic cells, and 148 user I/Os in a 208-pin BFQFP package. It operates from a 5 V supply at up to 125 MHz internal frequency and is built on a 0.42 µm CMOS process. The '-4' speed grade is the commercial-grade timing option, per the Altera FLEX 8000 datasheet family.
How many user I/O pins does the EPF81188AQC208-4 have?
The EPF81188AQC208-4 provides 148 user I/O pins across its 208-pin BFQFP package, with the remaining pins allocated to power, ground, JTAG, and dedicated configuration inputs. This I/O count is verified across Mouser, DigiKey, and Arrow listings, which all list '148 IOs' for this part number.
What is the difference between EPF81188AQC208-4 and EPF81188AQC208-3?
The EPF81188AQC208-4 and EPF81188AQC208-3 share the same 208-pin BFQFP package, FLEX 8000 architecture, and 12,000-gate / 1,008-cell density. The numeric suffix denotes the speed grade: '-4' is the slower commercial timing, while '-3' offers faster internal performance. Both versions are interchangeable in the same PCB footprint when timing closure permits.
Where can I buy the EPF81188AQC208-4?
As of 2026-09-12, the EPF81188AQC208-4 is listed as obsolete on the original Altera product page but is still in limited stock at distributors including Arrow, Mouser, and DigiKey, plus brokers such as Lisleapex and alterasemiconductor.com. Octopart indexes 2 distributors with bulk-discount pricing. Lead time for new production orders is typically quote-based.
What is the price of the EPF81188AQC208-4?
Distributor pricing as of 2026-09-12 (Octopart index) shows single-unit pricing around USD 95 with quantity breaks down to approximately USD 62 at 1,000 pieces. Pricing on the legacy / broker market fluctuates based on lot availability; sourcing through franchised distributors is strongly recommended to avoid counterfeits.
Is the EPF81188AQC208-4 obsolete?
Yes. The EPF81188AQC208-4 is part of the legacy Altera FLEX 8000 family that has been discontinued by Intel. Distributors list it as obsolete or last-time-buy, and remaining stock is offered through brokers and the secondary market. New designs should migrate to a Cyclone, MAX, or Lattice equivalent.
What package does the EPF81188AQC208-4 use?
The EPF81188AQC208-4 uses a 208-pin BFQFP (also referred to as PQFP) package with gull-wing leads suitable for surface-mount assembly. The '208' in the MPN encodes the pin count; 'AQC' indicates the BFQFP/PQFP package code with commercial temperature grade. Package dimensions and pin-1 location follow the JEDEC QFP family standard.
Does the EPF81188AQC208-4 support in-system programming?
Yes, the EPF81188AQC208-4 supports in-circuit reconfigurability (ICR) via the standard Altera JTAG interface, allowing the device to be reconfigured on the board without removal. According to the FLEX 8000 datasheet, configuration can be loaded via JTAG, a serial configuration EPROM, or a microprocessor, enabling field updates and design iteration.
What is the operating voltage of the EPF81188AQC208-4?
The EPF81188AQC208-4 operates from a 5 V VCCINT supply and supports MultiVolt I/O, allowing output buffers to drive 3.3 V or 5.0 V loads regardless of the core voltage. This MultiVolt feature is documented in the FLEX 8000 datasheet family and simplifies mixed-voltage system design with 3.3 V peripherals and 5 V legacy buses.
What is the difference between EPF81188AQC208-4 and EPF81188AGC232-4?
The EPF81188AQC208-4 uses a 208-pin BFQFP/PQFP package, while the EPF81188AGC232-4 uses a 232-pin PGA/BGA-style ceramic package. Both share the same 12,000-gate / 1,008-cell FLEX 8000 silicon, but the package change means they are NOT pin-compatible drop-in replacements - PCB redesign is required to migrate between them.
What is the best drop-in replacement for the EPF81188AQC208-4?
The best drop-in replacement is the EPF81188AQC208-3 (same 208-pin BFQFP, same silicon, faster speed grade) or the EPF81188AQC208-2 (same package, slowest speed grade), all from Intel/Altera. For modern alternatives, the Lattice ispMACH LC4256ZE or Altera MAX II EPM570 in TQFP-144 may be considered, but PCB redesign is typically required.
Where can I download the EPF81188AQC208-4 datasheet PDF?
The Altera FLEX 8000 datasheet family PDF can be downloaded from Intel's FPGA documentation archive (after registering) or from third-party repositories such as digchips.com and alterasemi.com. The exact document covers the entire FLEX 8000 family, including EPF81500A, EPF81188A, EPF8820A, and EPF8636A devices.
Where can I find the EPF81188AQC208-4 pinout?
The 208-pin BFQFP pinout is documented in the FLEX 8000 datasheet family, with separate pinout tables for the PQFP-208, PGA-232, and BGA-256 packages. Pin-1 is identified by the molded dot on the package top. The 148 user I/Os are multiplexed with configuration pins on power-up.
What are the key specifications of EPF81188AQC208-4 that engineers should know?
Key specifications of the EPF81188AQC208-4 include: 12,000 usable gates, 1,008 logic cells, 126 LABs, 148 user I/Os, 125 MHz maximum internal frequency, 5 V VCCINT, 3.3 V / 5.0 V MultiVolt I/O, 0°C to +70°C commercial temperature range, 0.42 µm CMOS process, and 208-pin BFQFP/PQFP package. Configuration is via JTAG or serial EPROM with in-circuit reconfigurability (ICR).

工程參考資料，適用於 EPF81188AQC208-4 — 比較、設計指引及合規資訊。

選型指南

Choose the EPF81188AQC208-4 when you need a 12,000-gate, 5 V FPGA in a 208-pin BFQFP/PQFP package for legacy 5 V industrial, telecom, or test-equipment designs. Choose the EPF81188AQC208-3 instead if you need faster internal timing (e.g., to meet 33 MHz PCI with margin), as it is a true drop-in replacement on the same footprint. Choose the EPF81188AQC208-2 if timing is not critical and you want maximum timing margin for low-power designs. For modern 3.3 V designs, consider the Altera MAX II EPM570F100C5N or Cyclone IV EP4CE6E22C8N - these require PCB redesign but offer lower power, higher density, and modern toolchains. Avoid confusing PQFP-208 with PGA-232 packages - they are NOT interchangeable.

與替代品比較

參數 本產品 EPF81188AQC208-3 EPF81188AQC208-2 EPF81188AGC232-4
Brand Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera)
Package PQFP-208 (BFQFP-208) PQFP-208 (BFQFP-208) - same PQFP-208 (BFQFP-208) - same PGA-232 (different)
Speed Grade -4 -3 (faster) -2 (slower) -4 (same)
Usable Gates 12,000 12,000 12,000 12,000
Logic Cells 1,008 1,008 1,008 1,008
Supply Voltage 5 V 5 V 5 V 5 V
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)

主要差異化特點

  • Pin-compatible speed-grade upgrade path within same package (對比EPF81188AQC208-3)
  • 5 V MultiVolt I/O support across 8 banks (對比Modern 3.3 V FPGAs (Cyclone, MAX II))
  • In-circuit reconfigurability (ICR) via JTAG (對比CPLDs such as EPM7128SQC160-10)

設計說明

The EPF81188AQC208-4 requires a stable 5 V VCCINT supply with sufficient decoupling: place one 100 µF bulk capacitor near the FPGA plus 0.1 µF high-frequency decoupling caps adjacent to every VCCINT and VCCIO pin pair. Per the FLEX 8000 datasheet, all VCCINT pins must be connected, and all GND pins must be tied to a low-impedance ground plane. MultiVolt I/O banks (VCCIO1..8) should be tied to 3.3 V or 5.0 V depending on the load device - never leave them floating.

Although the EPF81188AQC208-4 is a CMOS device with relatively modest power dissipation (typically 0.5 W to 2 W depending on utilization and toggle rate), the BFQFP-208 package relies on the PCB copper pour for heat spreading. Provide a continuous ground plane under the device and stitched thermal vias under the die-attached flag if present. For high-utilization designs (>70% LE usage at 125 MHz), consider airflow to keep junction temperature below 100°C.

Route all configuration pins (MSEL0, MSEL1, nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0) to a JTAG header or configuration EPROM socket before laying out the rest of the FPGA pinout. The FLEX 8000 datasheet recommends a pull-up on nCONFIG and a pull-down on nCE. Keep JTAG signals short and isolated from switching I/O to avoid programming failures. The BFQFP-208 has a 0.5 mm lead pitch typical of PQFP packages; use 0.2 mm trace/space with micro-via fanout if needed.

Do NOT mix up EPF81188AQC208-4 (PQFP-208) with EPF81188AGC232-4 (PGA-232) - they share silicon but the packages are completely different footprints and cannot be swapped on the same PCB. Also confirm MultiVolt I/O bank voltages before connecting to 3.3 V devices - although the I/O is 3.3 V tolerant when VCCIO is set to 3.3 V, leaving VCCIO at 5 V and driving into a 3.3 V receiver will damage the receiver.

合規資訊

RoHS
Non Compliant
REACH
Unknown
AEC-Q100
Not Applicable
無鉛
No
無鹵
Unknown
衝突礦產
Unknown

The EPF81188AQC208-4 is a legacy 5 V FLEX 8000 device with lead-containing PQFP-208 packaging (SnPb or pure Sn finish depending on date code). RoHS compliance status was not explicitly stated in verified web data - marked non_compliant by default for legacy 5 V FPGAs. Confirm with supplier for specific date-code compliance. Not AEC-Q100 qualified (commercial temperature grade only).

資料驗證日期： 2026-09-12 — 資料由 XAIPART 元件工程團隊驗證及整理

相關搜尋

EPF81188AQC208-4 EPF81188AQC208-4 datasheet FLEX 8000 FPGA 12K gates 5V EPF81188 vs EPF81188AQC208 EPF81188AQC208-4 drop-in replacement Altera FLEX 8000 PQFP-208 FPGA 148 I/O 5V FPGA BFQFP-208 EPF81188AQC208-4 buy obsolete stock EPF81188AQC208-4 vs EPF81188AQC208-3 5V FPGA MultiVolt I/O legacy industrial FLEX 8000 in-circuit reconfigurability JTAG what is EPF81188AQC208-4 equivalent

相關元件與詞彙

Intel Altera EPF81188AQC208-4 EPF81188AQC208-3 EPF81188AQC208-2 EPF81188AGC232-4 FLEX 8000 FPGA field programmable gate array CMOS SRAM-based logic PQFP-208 BFQFP-208 PGA-232 MultiVolt I/O 5 V logic 3.3 V I/O in-circuit reconfigurability JTAG ByteBlaster Logic Array Block Logic Element LUT carry chain FastTrack interconnect RoHS AEC-Q100 JEDEC QFP industrial glue logic PCI bridge ISA bus telecom backplane
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