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

MPN: EPF8452AQC160-4 ✗ End of Life

In Stock Ships in 1-3 business days

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

From $11 USD / Unit

MOQ: 1 |

Price updated: 2026-09-11

Volume Pricing

Qty	Unit Price	Extended
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 All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for EPF8452AQC160-4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

EPF8452AQC160-3

✅ Drop-In

Altera

📦 160-BQFP

FLEX 8000 · 4,000 · 336 · 42 · 120 · 68 · -3 · 0.42 µm CMOS

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$13.85 / Unit

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EPF8452AQC160-2

✅ Drop-In

Intel

📦 160-BQFP

FLEX 8000 · 336 · ~4,000 · 42 · 120 (per Altera data), 68 (per DigiKey listing) · ~1,500 · 5 V (4.75 V to 5.25 V) · 0.42 µm CMOS SRAM

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$23.85 / Unit

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EPF8452AQC160-3AC

✅ Drop-In

Intel

📦 160-BQFP

FLEX 8000 · 336 · 4,000 · 120 · 8 · 0.42 µm CMOS SRAM · 5 V · 3.3 V and 5 V

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$14.1 / Unit

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EPF8452AGC160-3

✅ Drop-In

Altera

📦 160-BQFP

FLEX 8000 · 336 · ~4,000 (up to 16,000 in family) · 120 · 4.75 V to 5.25 V · 5 V · 0 C to +70 C (Commercial) · -3

✓ In Stock

$23.1 / Unit

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EPF8452AGC160-3N

✅ Drop-In

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)

✓ In Stock

$64 / Unit

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EPF8452AQC160-4 Maximum Ratings & Electrical Characteristics

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)
Supply Voltage	5 V
Logic Family	CMOS
Process Technology	0.42 um CMOS SRAM
Operating Temperature	0 C to 70 C (Commercial)
Maximum Frequency	125 MHz
Package	160-BQFP / PQFP
Mounting Type	Surface Mount
Configuration Method	SRAM, in-circuit reconfigurable

EPF8452AQC160-4 Pin Configuration

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

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

EPF8452AQC160-4 is suitable for 6 applications: 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.

Recommended

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.

Recommended

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.

Recommended

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.

Recommended

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.

Recommended

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.

Recommended

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

Recommended Products Summary

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

Engineering reference data for EPF8452AQC160-4 — comparison, design guidance, and compliance information.

Selection Guide

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.

Comparison with Alternatives

Parameter	This Product	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)

Key Differentiators

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)

Design Notes

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.

Compliance Information

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

Lead Free

Unknown

Halogen Free

Unknown

Conflict Minerals

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.

Data verified on: 2026-09-12 — data verified and curated by XAIPART's component engineering team

Sources: Distributor, Distributor, Manufacturer_Datasheet, Manufacturer_Datasheet, Distributor, Octopart, Manufacturer_Product_Page, Manufacturer_Datasheet

Related Components & Terms

Altera Intel FPGA EPF8452AQC160-4 EPF8452AQC160-3 EPF8452AQC160-2 EPF8452AQC160-3AC EPF8452AGC160-3 EPF8452AGC160-3N FLEX 8000 FPGA Field Programmable Gate Array Programmable Logic Device PLD CPLD Logic Array Block LAB Look-Up Table LUT BQFP PQFP 160-BQFP CMOS SRAM 5 V CMOS logic JTAG IEEE 1149.1 boundary-scan EPC1 EPC1213 EPC1064 EPC1441 configuration EPROM in-circuit reconfigurability ICR MAX+PLUS II Quartus PCI bus ISA bus VME bus RoHS lead-free AEC-Q100 JEDEC surface mount SMD industrial temperature grade commercial temperature grade logic cell flip-flop register FastTrack interconnect