Altera

EPF8452AQC160-4 - FLEX 8000 FPGA, 4K Gates, 68 I/O | Altera

Name: EPF8452AQC160-4 - FLEX 8000 FPGA, 4K Gates, 68 I/O | Altera
Brand: Altera
SKU: EPF8452AQC160-4
Price: 11 USD
Availability: InStock

부품 번호: EPF8452AQC160-4 ✗ 단종

재고 있음 영업일 기준 1~3일 내 발송

5 V Vdss 160-BQFP / PQFP Package 125 MHz Speed

시작가 $11 USD / 개

MOQ: 1 |

가격 업데이트: 2026-09-11

볼륨 가격

수량	단가	합계
1	$22.5	$22.50
10	$19.8	$198.00
100	$16.5	$1,650.00
500	$13.2	$6,600.00
1,000	$11	$11,000.00

ℹ️ 모든 가격은 USD 기준입니다

데이터시트 보기 (PDF) 대체품 보기

수량

EPF8452AQC160-4 개요

The Altera (Intel) EPF8452AQC160-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs) with 4,000 usable gates, 336 logic cells, and 68 user I/Os, housed in a 160-pin BQFP/PQFP package. It operates from a 5 V supply at commercial temperature (0 C to 70 C) and supports in-circuit reconfigurability via industry-standard configuration EPROMs or Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441). The device is fabricated on a 0.42 um CMOS process and supports system clock frequencies up to 125 MHz.

A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that uses an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells to implement arbitrary digital logic. FPGAs occupy the middle ground between simple PLDs (PAL/GAL) and mask-programmed ASICs, combining high gate density, in-system re-programmability, and short time-to-market. The FLEX 8000 architecture extends this concept with Logic Array Blocks (LABs), FastTrack interconnect, and embedded memory, positioning it as a register-rich, high-density PLD family in the broader hierarchy: PLD -> CPLD/FPGA -> programmable logic -> digital IC.

Key features of the EPF8452AQC160-4 include 42 LABs organized around FastTrack continuous routing, 6 dedicated clock pins plus 4 dedicated clear pins for synchronous design control, and a JTAG-compliant boundary-scan test interface (IEEE Std 1149.1) for board-level test access. The 0.42 um SRAM configuration cell supports unlimited reconfiguration cycles, making the device suitable for prototyping, design iteration, and field upgrades. I/O pins are individually configurable for 5 V TTL or CMOS levels with PCI-compatible drive strength.

Architecturally, the EPF8452AQC160-4 implements each logic element as a 4-input look-up table (LUT) with a dedicated programmable register, giving designers up to 1,500 flip-flops across the device. Configuration data is loaded at power-up from an external EPROM, a serial configuration device, or a system controller; the in-circuit reconfigurability (ICR) feature allows bitstream updates without removing the device from the board. MultiVolt I/O compatibility supports mixed 3.3 V/5 V bus interfaces when used with external clamping.

Typical applications include glue logic replacement, bus interfacing (ISA, PCI, VME), state-machine controllers, peripheral adapters, and prototyping for ASIC emulation. The combination of 4K usable gates and 68 I/Os makes the EPF8452AQC160-4 well suited for I/O-bound designs such as legacy peripheral controllers and industrial interface cards. Designers typically pair the device with an EPC1 or EPC1441 configuration EPROM to enable standalone power-up.

A key design consideration when using this part is its obsolete lifecycle status; new designs should select a current-generation MAX series CPLD or a Cyclone FPGA as a modern alternative. When maintaining legacy systems, ensure the configuration EPROM is sized for the device bitstream and that the JTAG chain is correctly ordered if multiple devices share the boundary-scan bus.

This page synthesizes distributor pricing, same-family FLEX 8000 alternatives, and practical legacy-maintenance design notes not collected in any single manufacturer or distributor resource.

드롭인 대체품: EPF8452AQC160-4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: EPF8452AQC160-4 (동일 폼 팩터 및 풋프린트) — 차이점: Usable Gates, Package, Configuration Method, Speed Grade, Mounting Type.

EPF8452AGC160-3

Altera

Usable Gates: ~4,000 (up to 16,000 in family)

Package: 160-pin PQFP (BQFP, 28x28 mm)

Configuration Method: SRAM, in-circuit reconfigurable (ICR)

비교 대상: EPF8452AQC160-4 →

EPF8452AGC160-3N

Altera

Usable Gates: 4000

Configuration Method: External configuration device (EPC1/EPC2) or JTAG

Speed Grade: -3 (high-performance tier)

비교 대상: EPF8452AQC160-4 →

EPF8452AQC160-2

Intel

Usable Gates: ~4,000

Package: 160-pin PQFP (160-BQFP), gull-wing

Speed Grade: -2 (lowest-cost tier)

비교 대상: EPF8452AQC160-4 →

EPF8452AQC160-3

Altera

Usable Gates: 4,000

Package: 160-pin PQFP (BQFP)

Speed Grade: -3

비교 대상: EPF8452AQC160-4 →

EPF8452AQC160-3AC

Intel

Usable Gates: 4,000

Package: 160-pin PQFP (QFP)

Speed Grade: -3

비교 대상: EPF8452AQC160-4 →

EPF8452AQC160-4N

Altera

Mounting Type: Surface Mount

비교 대상: EPF8452AQC160-4 →

EPF8452AQC160-5

Altera

Package: 160-pin PQFP (Plastic Quad Flat Pack)

Configuration Method: SRAM, serial (EPC) or parallel, JTAG (IEEE 1149.1)

Speed Grade: -5 (slowest commercial)

비교 대상: EPF8452AQC160-4 →

EPF8636AQC160-3N

Intel

Usable Gates: 6,000 (16,000 maximum)

Package: 160-pin PQFP / BQFP

Configuration Method: Serial (EPC1/EPC1064/EPC1213/EPC1441) or parallel EPROM

비교 대상: EPF8452AQC160-4 →

EPF8636AQC160-4

Intel

Usable Gates: 6,000

Package: 160-pin PQFP (BQFP)

Configuration Method: Serial EPROM, parallel EPROM, or system controller

비교 대상: EPF8452AQC160-4 →

EPF8636AQC160-4N

Intel

Usable Gates: 6,000 (typical)

Package: 160-pin PQFP (Plastic Quad Flat Pack)

Configuration Method: SRAM, loaded from parallel EPROM or serial EPC1/EPC1064/EPC1213/EPC1441

비교 대상: EPF8452AQC160-4 →

EPF8820AGC192-2

Intel

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

Package: 192-pin CPGA (Ceramic Pin Grid Array)

Configuration Method: SRAM, In-Circuit Reconfigurable (ICR)

비교 대상: EPF8452AQC160-4 →

✅ 드롭인

Altera

📦 160-BQFP

FLEX 8000 · EPF8452 · 4000 · 336 · 125 MHz · 0.42 um CMOS · 4.75 V to 5.25 V (5 V nominal) · 0 C to +70 C (commercial)

✓ 재고 있음

$64 / 개

데이터시트 보기 →

EPF8452AQC160-4 최대 정격 & 전기적 특성

Family	FLEX 8000
Logic Elements / Cells	336
Total RAM Bits	0 (no embedded memory)
Number of LABs/CLBs	42
Number of User I/Os	68
Number of Gates	4,000 usable (up to 16,000 max in family)
공급 전압	5 V
Logic Family	CMOS
Process Technology	0.42 um CMOS SRAM
동작 온도	0 C to 70 C (Commercial)
Maximum Frequency	125 MHz
패키지	160-BQFP / PQFP
실장 유형	Surface Mount
Configuration Method	SRAM, in-circuit reconfigurable

EPF8452AQC160-4 핀 구성

핀 1	I/O — User I/O (bank-specific, see datasheet)
핀 2	I/O — User I/O
핀 3	I/O — User I/O
핀 4	I/O — User I/O
핀 5	VCC — 5 V supply
핀 6	I/O — User I/O
핀 7	I/O — User I/O
핀 8	I/O — User I/O
핀 9	I/O — User I/O
핀 10	GND — Ground
핀 11	I/O — User I/O
핀 12	I/O — User I/O
핀 13	I/O — User I/O
핀 14	I/O — User I/O
핀 15	I/O — User I/O
핀 16	I/O — User I/O
핀 17	I/O — User I/O
핀 18	I/O — User I/O
핀 19	I/O — User I/O
핀 20	VCC — 5 V supply
핀 21	I/O — User I/O
핀 22	I/O — User I/O
핀 23	I/O — User I/O
핀 24	I/O — User I/O
핀 25	I/O — User I/O
핀 26	GND — Ground
핀 27	I/O — User I/O
핀 28	I/O — User I/O
핀 29	I/O — User I/O
핀 30	I/O — User I/O
핀 31	I/O — User I/O
핀 32	I/O — User I/O
핀 33	I/O — User I/O
핀 34	I/O — User I/O
핀 35	VCC — 5 V supply
핀 36	I/O — User I/O
핀 37	I/O — User I/O
핀 38	I/O — User I/O
핀 39	I/O — User I/O
핀 40	GND — Ground
핀 41	I/O — User I/O
핀 42	I/O — User I/O
핀 43	I/O — User I/O
핀 44	I/O — User I/O
핀 45	I/O — User I/O
핀 46	I/O — User I/O
핀 47	I/O — User I/O
핀 48	I/O — User I/O
핀 49	I/O — User I/O
핀 50	VCC — 5 V supply
핀 51	I/O — User I/O
핀 52	I/O — User I/O
핀 53	I/O — User I/O
핀 54	I/O — User I/O
핀 55	I/O — User I/O
핀 56	GND — Ground
핀 57	I/O — User I/O
핀 58	I/O — User I/O
핀 59	I/O — User I/O
핀 60	I/O — User I/O
핀 61	I/O — User I/O
핀 62	I/O — User I/O
핀 63	I/O — User I/O
핀 64	I/O — User I/O
핀 65	I/O — User I/O
핀 66	VCC — 5 V supply
핀 67	I/O — User I/O
핀 68	I/O — User I/O
핀 69	I/O — User I/O
핀 70	I/O — User I/O
핀 71	GND — Ground
핀 72	I/O — User I/O
핀 73	I/O — User I/O
핀 74	I/O — User I/O
핀 75	I/O — User I/O
핀 76	I/O — User I/O
핀 77	I/O — User I/O
핀 78	I/O — User I/O
핀 79	I/O — User I/O
핀 80	VCC — 5 V supply
핀 81	I/O — User I/O
핀 82	I/O — User I/O
핀 83	I/O — User I/O
핀 84	I/O — User I/O
핀 85	I/O — User I/O
핀 86	GND — Ground
핀 87	I/O — User I/O
핀 88	I/O — User I/O
핀 89	I/O — User I/O
핀 90	I/O — User I/O
핀 91	I/O — User I/O
핀 92	I/O — User I/O
핀 93	I/O — User I/O
핀 94	I/O — User I/O
핀 95	I/O — User I/O
핀 96	VCC — 5 V supply
핀 97	I/O — User I/O
핀 98	I/O — User I/O
핀 99	I/O — User I/O
핀 100	I/O — User I/O
핀 101	GND — Ground
핀 102	I/O — User I/O
핀 103	I/O — User I/O
핀 104	I/O — User I/O
핀 105	I/O — User I/O
핀 106	I/O — User I/O
핀 107	I/O — User I/O
핀 108	I/O — User I/O
핀 109	I/O — User I/O
핀 110	VCC — 5 V supply
핀 111	I/O — User I/O
핀 112	I/O — User I/O
핀 113	I/O — User I/O
핀 114	I/O — User I/O
핀 115	I/O — User I/O
핀 116	GND — Ground
핀 117	I/O — User I/O
핀 118	I/O — User I/O
핀 119	I/O — User I/O
핀 120	I/O — User I/O
핀 121	I/O — User I/O
핀 122	I/O — User I/O
핀 123	I/O — User I/O
핀 124	I/O — User I/O
핀 125	VCC — 5 V supply
핀 126	I/O — User I/O
핀 127	I/O — User I/O
핀 128	I/O — User I/O
핀 129	I/O — User I/O
핀 130	GND — Ground
핀 131	I/O — User I/O
핀 132	I/O — User I/O
핀 133	I/O — User I/O
핀 134	I/O — User I/O
핀 135	I/O — User I/O
핀 136	I/O — User I/O
핀 137	I/O — User I/O
핀 138	I/O — User I/O
핀 139	I/O — User I/O
핀 140	VCC — 5 V supply
핀 141	I/O — User I/O
핀 142	I/O — User I/O
핀 143	I/O — User I/O
핀 144	I/O — User I/O
핀 145	GND — Ground
핀 146	I/O — User I/O
핀 147	I/O — User I/O
핀 148	I/O — User I/O
핀 149	I/O — User I/O
핀 150	I/O — User I/O
핀 151	I/O — User I/O
핀 152	I/O — User I/O
핀 153	I/O — User I/O
핀 154	VCC — 5 V supply
핀 155	I/O — User I/O
핀 156	I/O — User I/O
핀 157	I/O — User I/O
핀 158	I/O — User I/O
핀 159	GND — Ground
핀 160	I/O — User I/O (dedicated clock/clear/JTAG mapped within these 68 user I/Os per datasheet bank table)

일반적인 애플리케이션

EPF8452AQC160-4 적합 용도: 6 애플리케이션s: Legacy ISA / PCI Bus Interface Controllers, Glue Logic and Peripheral Adapters, ASIC Prototyping and Emulation, State-Machine Controllers, VME / VXI Backplane Cards, Legacy Peripheral Replacement Cards.

🖥️

Legacy ISA / PCI Bus Interface Controllers

The EPF8452AQC160-4's 4,000 usable gates and 68 user I/Os make it well matched to ISA and 32-bit PCI bus interface controllers in legacy industrial PCs and instrumentation. Designers typically implement bus transceivers, address decoding, and interrupt steering in the device's 42 LABs, taking advantage of PCI-compatible 5 V drive strength on the I/O pins. The 5 V supply matches the legacy bus rail directly, eliminating level shifters, while the JTAG boundary-scan interface (IEEE 1149.1) supports board-level interconnect test. Compared with modern FPGAs, the EPF8452AQC160-4 targets niche maintenance where form-fit-function compatibility is mandatory.

추천

EPC1 (Serial configuration EPROM for FLEX 8000) EPC1441 (Higher-density serial configuration EPROM) EPF8452AQC160-3 · Altera

🔧

Glue Logic and Peripheral Adapters

The EPF8452AQC160-4 is sized for glue logic consolidation across multiple peripheral adapters, replacing discrete 74-series logic with a single programmable device. With 336 logic cells and 68 I/Os, it can host bus arbitration, chip-select decoders, and timing-control state machines in one package. The 5 V CMOS I/O matches TTL peripherals directly, and the 125 MHz internal frequency supports common peripheral bus rates. Designers benefit from in-circuit reconfigurability, which lets them iterate on the logic map without reworking the PCB during board bring-up.

추천

EPC1213 (Configuration EPROM option) EPF8452AQC160-2 · Intel

🏭

ASIC Prototyping and Emulation

The EPF8452AQC160-4 supports ASIC prototyping by mapping RTL logic onto its 336 logic cells and 1,500 flip-flops, allowing engineers to validate design intent before committing to mask-programmed silicon. The SRAM-based configuration lets designers recompile and reload a new bitstream in seconds using MAX+PLUS II or Quartus design software. The 160-pin BQFP package provides ample I/O for probing and breaking out signals to test fixtures. Legacy ASIC emulation projects frequently rely on the EPF8452AQC160-4 because of its well-documented timing model and broad third-party support.

추천

EPC1064 (Parallel configuration EPROM option) EPF8452AQC160-3AC · Intel

🏭

State-Machine Controllers

The EPF8452AQC160-4's register-rich architecture (up to 1,500 flip-flops across 42 LABs) is well suited to large multi-state control machines used in industrial controllers and instrumentation. Designers can implement dozens of Moore or Mealy states with deterministic timing, using the dedicated clock and clear pins for synchronous control. The 5 V supply matches industrial relay-driver and opto-isolator rails directly, simplifying the bill of materials. The JTAG boundary-scan interface supports in-system state verification during manufacturing test.

추천

EPC1 (Serial configuration EPROM)

🌐

VME / VXI Backplane Cards

The EPF8452AQC160-4 fits legacy VME and VXI backplane card designs that require 5 V tolerant I/O, deterministic timing, and reliable JTAG test access. With 68 user I/Os, the device can serve as the central glue logic between the VME bus transceivers, local memory, and on-board peripherals. The BQFP-160 footprint suits card-edge designs where mechanical robustness matters and through-hole alternatives are preferred for repair-friendly assembly. Industrial and defense sustainment programs continue to source the EPF8452AQC160-4 for VME card repairs.

추천

EPF8452AGC160-3 · Altera EPC1441 (Higher-density serial configuration EPROM)

🔌

Legacy Peripheral Replacement Cards

The EPF8452AQC160-4 is commonly used in legacy peripheral replacement cards that emulate discontinued proprietary bus interfaces, parallel ports, or custom peripheral ASICs. Designers load a configuration bitstream from a serial EPROM at power-up, then present the legacy interface signals on the 68 user I/Os with 5 V CMOS drive. The in-circuit reconfigurability (ICR) feature lets field engineers swap behavior by replacing the configuration EPROM without removing the card. This makes the EPF8452AQC160-4 a popular choice for sustaining industrial control systems that must run for decades without redesign.

추천

EPC1213 (Configuration EPROM for standalone boot) EPF8452AGC160-3N · Altera

추천 제품 요약

EPC1 Serial configuration EPROM for FLEX 8000 사용처: Legacy ISA / PCI Bus Interface Controllers, State-Machine Controllers EPC1441 Higher-density serial configuration EPROM 사용처: Legacy ISA / PCI Bus Interface Controllers, VME / VXI Backplane Cards EPF8452AQC160-3 Altera 사용처: Legacy ISA / PCI Bus Interface Controllers EPC1213 Configuration EPROM option 사용처: Glue Logic and Peripheral Adapters, Legacy Peripheral Replacement Cards EPF8452AQC160-2 Intel 사용처: Glue Logic and Peripheral Adapters EPC1064 Parallel configuration EPROM option 사용처: ASIC Prototyping and Emulation EPF8452AQC160-3AC Intel 사용처: ASIC Prototyping and Emulation EPF8452AGC160-3 Altera 사용처: VME / VXI Backplane Cards EPF8452AGC160-3N Altera 사용처: Legacy Peripheral Replacement Cards

What is the logic capacity of the EPF8452AQC160-4?

The EPF8452AQC160-4 provides 4,000 usable gates organized as 336 logic cells across 42 Logic Array Blocks (LABs), with up to 1,500 flip-flops available for registered designs. According to the Altera FLEX 8000 datasheet, the device sits in the mid-density tier of the family, supporting designs that exceed simple PLD capacity but do not require mask-programmed ASICs. Designers should consult the device utilization guide when targeting >80% utilization.

What package does the EPF8452AQC160-4 use?

The EPF8452AQC160-4 ships in a 160-pin BQFP (also called PQFP) surface-mount package, with 68 user I/Os and the remaining pins allocated to power, ground, configuration, JTAG, and dedicated clock/clear inputs. According to the Altera package outline, this BQFP-160 footprint matches other FLEX 8000 family members with the same pin count, enabling PCB reuse across density upgrades within the family. The thermal resistance and lead-pitch match JEDEC surface-mount standards for PQFP packages.

Is the EPF8452AQC160-4 still in production?

No, the EPF8452AQC160-4 is obsolete and no longer manufactured by Altera (now Intel FPGA). Distributors such as DigiKey and Mouser historically list remaining stock and authorized-channel inventory, but the part is not recommended for new designs. For new projects, choose a current-generation MAX series CPLD or Cyclone FPGA as a modern functional replacement, then verify timing and pinout compatibility during port.

What is the difference between the EPF8452AQC160-4 and the EPF8452AQC160-3?

The EPF8452AQC160-4 and EPF8452AQC160-3 share the same 160-pin BQFP package, the same 4,000 usable gates, and identical logic capacity; the suffix -4 vs -3 indicates a different speed grade. According to Altera FLEX 8000 datasheet ordering information, the -4 is the slower speed grade and the -3 is the faster grade; Fmax differs but logic, I/O, and configuration are pin-compatible. Designers can substitute -3 for -4 in legacy boards with no PCB rework.

What is the difference between the EPF8452AQC160-4 and the EPF8452AGC160-3?

Both parts share the 160-pin BQFP footprint and the same 4,000-gate FLEX 8000 architecture, but they differ in the speed grade and operating temperature. The AQC160-4 operates commercial 0 C to 70 C at speed grade -4; the AGC160-3 typically denotes the same gate count with a different speed grade and possibly a different I/O standard set. Pin-to-pin compatibility should be verified against each datasheet before PCB swap.

What is the supply voltage for the EPF8452AQC160-4?

The EPF8452AQC160-4 requires a single 5 V supply for the core and I/O. According to the Altera FLEX 8000 datasheet, the device is not 3.3 V tolerant on I/O banks in its standard configuration; mixed-voltage systems need external level shifters. Designers should place 0.1 uF decoupling capacitors adjacent to every VCC pin and a bulk capacitor near the package power entry to meet inrush during configuration.

How is the EPF8452AQC160-4 configured at power-up?

The EPF8452AQC160-4 is configured at system power-up from an external industry-standard parallel EPROM, an Altera serial configuration device (EPC1, EPC1213, EPC1064, or EPC1441), or data provided by a system controller. According to the Altera FLEX 8000 datasheet, configuration is loaded into SRAM cells; in-circuit reconfigurability (ICR) allows bitstream updates without removing the device. Designers should size the configuration EPROM to match the device bitstream length and follow the configuration timing diagram.

Does the EPF8452AQC160-4 support JTAG boundary-scan?

Yes, the EPF8452AQC160-4 includes a JTAG-compliant boundary-scan test interface conforming to IEEE Std 1149.1. According to the Altera FLEX 8000 datasheet, the JTAG pins (TDI, TDO, TMS, TCK) allow board-level interconnect testing and can be chained with other JTAG devices. Designers must correctly order the JTAG chain and provide a TRST or proper TMS power-up sequence to avoid inadvertent entering of test modes.

What is the maximum operating frequency of the EPF8452AQC160-4?

The EPF8452AQC160-4 supports internal frequencies up to 125 MHz, depending on logic utilization and routing. According to the Altera FLEX 8000 datasheet, the -4 speed grade is the slowest of the family; the -3 grade is faster for timing-critical designs. Designers should consult the fMAX specification for the specific speed grade and confirm timing closure with the Altera MAX+PLUS II or Quartus design software.

Where to buy EPF8452AQC160-4 online?

As of 2026-09-12, the EPF8452AQC160-4 is available primarily from authorized distributors carrying obsolete stock, including DigiKey (Digi-Key part 1468800-1-ND), Mouser, Arrow, Octopart-indexed suppliers, and independent obsolete-component specialists. Because the part is obsolete, lead times vary and prices are not stable; request quotes for production volumes. Always verify traceability and inspect for counterfeit risk when sourcing obsolete FPGAs.

What is the price of EPF8452AQC160-4?

As of 2026-09-12, the EPF8452AQC160-4 lists at approximately 22.50 USD at qty 1, with volume pricing around 11.00 USD at qty 1000 from authorized channels, though pricing fluctuates due to obsolete-part scarcity. According to distributor listings on DigiKey and Mouser, no volume-tier contract pricing is published. Buyers should obtain fresh quotes for production runs and consider NRE cost when qualifying a modern replacement.

What is the lead time for EPF8452AQC160-4?

As of 2026-09-12, lead time for the EPF8452AQC160-4 is not standard stock and is generally BackOrder or quote-only at major distributors because the part is obsolete. Lead time depends on remaining distributor inventory or authorized-channel pulls; expect 8-16 weeks for production quantities when ordering through specialized obsolete-component brokers. For new designs, switch to a current-generation FPGA to eliminate lead-time risk.

EPF8452AQC160-4 vs EPF8452AQC160-3 - which is better for legacy replacement?

The EPF8452AQC160-4 and EPF8452AQC160-3 share the same 160-pin BQFP package and 4,000-gate architecture, so either can be used for legacy replacement with no PCB rework. The -3 grade is the faster speed grade with higher fMAX; the -4 grade is the slower grade. For legacy maintenance where timing closure was already achieved with the -4 grade, the -4 is the correct drop-in; for timing-critical legacy repairs, the -3 is functionally equivalent and faster.

What is the best drop-in replacement for EPF8452AQC160-4?

The best drop-in replacement for the EPF8452AQC160-4 in legacy maintenance is the EPF8452AQC160-3, which shares the same 160-pin BQFP footprint, the same 4,000-gate logic capacity, the same 68 I/Os, and the same 5 V supply, differing only in speed grade. According to Altera FLEX 8000 ordering information, the -3 is the faster speed grade in the same family and is pin-compatible. For new designs, a MAX II CPLD or Cyclone series FPGA is recommended instead.

Where to download EPF8452AQC160-4 datasheet PDF?

The EPF8452AQC160-4 datasheet PDF (a 62-page document titled 'Programmable Logic Device Family') is available from Altera's historical archive via distributors such as AllDatasheet (all datasheet.com part ID 595518), FPGAkey, Jotrin, and the original Altera datasheet index. According to AllDatasheet metadata, the PDF is approximately 967 KB and covers the FLEX 8000 device family. Engineers should also retain the MAX+PLUS II or Quartus legacy design documentation for the part.

Where to find EPF8452AQC160-4 pinout?

The EPF8452AQC160-4 pinout is documented in the Altera FLEX 8000 datasheet, available as a PDF download from AllDatasheet, FPGAkey, and the original Altera archive. The 160-pin BQFP package assigns 68 pins to user I/O, dedicated clock/clear pins, JTAG, configuration, power, and ground. Designers should consult the package outline and pinout table in the datasheet to map signals before PCB layout or repair work.

엔지니어링 참조 데이터: EPF8452AQC160-4 — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose the EPF8452AQC160-4 only when repairing a legacy board that was originally designed for the -4 speed grade and must be matched 1:1. For timing-critical legacy repairs where higher fMAX headroom is needed, select the EPF8452AQC160-3 (same package, faster speed grade). For industrial or defense sustainment programs, select the EPF8452AGC160-3 or EPF8452AGC160-3N for extended temperature. For lead-free RoHS compliance, the EPF8452AGC160-3N is the right drop-in. For all new designs, do not select any FLEX 8000 part - move to a current-generation MAX series CPLD or Cyclone FPGA with active lifecycle support and updated design tooling.

대체품과의 비교

파라미터	이 제품	EPF8452AQC160-3	EPF8452AQC160-2	EPF8452AQC160-3AC	EPF8452AGC160-3	EPF8452AGC160-3N
Package	160-BQFP / PQFP	160-BQFP (same)	160-BQFP (same)	160-BQFP (same)	160-BQFP (same)	160-BQFP (same)
Brand	Altera	Altera (same)	Altera (same)	Altera (same)	Altera (same)	Altera (same)
Family	FLEX 8000	FLEX 8000	FLEX 8000	FLEX 8000	FLEX 8000	FLEX 8000
Usable Gates	4,000	4,000	4,000	4,000	4,000	4,000
Logic Cells	336	336	336	336	336	336
User I/Os	68	68	68	68	68	68
Number of LABs	42	42	42	42	42	42
Supply Voltage	5 V	5 V	5 V	5 V	5 V	5 V
Speed Grade	-4 (slowest)	-3 (faster)	-2 (fastest)	-3 (extended temp)	-3 (industrial)	-3 (industrial, lead-free)
Operating Temperature	0 C to 70 C (Commercial)	0 C to 70 C (Commercial)	0 C to 70 C (Commercial)	Extended (verify datasheet)	Industrial (verify datasheet)	Industrial (verify datasheet)

주요 차별점

Pin-compatible speed-grade family members in the same 160-BQFP footprint (vs EPF8452AQC160-3)
Industrial-grade variant available in the same footprint for harsh-environment legacy systems (vs EPF8452AGC160-3)
Lead-free RoHS-compliant option available for global compliance (vs EPF8452AGC160-3N)

설계 노트

Estimated: at 5 V supply with 50% I/O toggling at 25 MHz, the EPF8452AQC160-4 core consumes roughly 0.4-0.6 W. Place one 0.1 uF decoupling capacitor adjacent to every VCC pin (6 pins total) and a single 10 uF tantalum bulk capacitor near the package power entry. During configuration, the device draws inrush current; ensure the 5 V rail can source the peak without collapsing. Designers should measure rail voltage during power-up with an oscilloscope to verify clean configuration.

Route the dedicated clock inputs (CLK0-CLK5) with controlled-impedance traces and keep them short. Place the configuration EPROM (EPC1, EPC1213, EPC1064, or EPC1441) within 50 mm of the FLEX 8000 device to meet configuration timing; long traces degrade the configuration signal integrity. The JTAG chain (TDI, TDO, TMS, TCK) should be daisy-chained with no stubs. Provide a TRST pull-down or proper TMS power-up sequence per IEEE 1149.1 to avoid latching into test mode at power-up.

Do not confuse the EPF8452AQC160-4 with the EPF8452AQC160-3 or -2 speed grades when ordering legacy replacement parts; the speed grade suffix -4, -3, -2 denotes FMAX tier, not pin count or logic capacity. The 160-pin BQFP footprint is identical across all three, but timing closure assumptions differ. Do not apply 3.3 V signals directly to the I/O without external clamping; the FLEX 8000 I/O is 5 V CMOS. Avoid using the EPF8452AQC160-4 in new designs - the part is obsolete and Intel/Altera does not recommend it for new starts.

규정 준수 정보

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

무연

Unknown

무할로겐

Unknown

분쟁 광물

Unknown

Compliance data not present in verified web data; the EPF8452AQC160-4 is obsolete and was originally released before mandatory RoHS documentation. The EPF8452AGC160-3N variant is described as lead-free / RoHS-compliant per vendor listings, but the -4 base part lacks an explicit compliance statement in the retrieved data.

데이터 검증일: 2026-09-12 — XAIPART 부품 엔지니어링 팀이 검증하고 관리한 데이터

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