AMD XC4008E-4PG191I

Overview

XC4008E-4PG191I from Xilinx is a Field-Programmable Gate Array (FPGA) with 8,000 usable gates, 191-pin plastic quad flat pack (PQFP) package, -4 speed grade (15 ns CLB propagation delay), and industrial temperature range (-40°C to +100°C). It implements synchronous digital logic in embedded control and interface bridging applications.

For engineers reviewing the XC4008E-4PG191I datasheet, pinout, applications, or equivalent options, key selection criteria include gate count, I/O count (144 user I/Os), speed grade timing, PQFP thermal and routing constraints, and legacy 5V CMOS compatibility.

Technical Context

The XC4008E-4PG191I belongs to Xilinx's XC4000E FPGA family, built on 0.5 µm CMOS technology. It contains configurable logic blocks (CLBs), input/output blocks (IOBs), and interconnect resources programmable via SRAM configuration memory.

Configuration is performed serially through the JTAG boundary-scan port or parallel mode using an external PROM. The device supports IEEE 1149.1 compliance and in-system reprogrammability without power cycle.

Key Specifications

Pinout & Package

XC4008E-4PG191I uses a 191-pin PQFP package with 144 user I/Os, 4 dedicated configuration pins (INIT, PROGRAM, CCLK, DIN), and power/ground distribution across multiple pins for noise reduction and thermal management.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA logic implementation applications.

Compared with XC4008E-4PG191I, the XC4008E-4PQ208C offers identical functionality in a larger package for commercial use, while the XC4010E-4PG191I delivers higher gate count in the same footprint - enabling scalability without board redesign.

Availability

XC4008E-4PG191I is available at Aetrix Electronics and suitable for industrial PLCs, legacy bus interface bridges, motor control systems, and medical instrumentation requiring stable component supply and long-term obsolescence management.

Supply support for XC4008E-4PG191I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Xilinx, now part of AMD, pioneered commercial FPGA technology and developed scalable programmable logic architectures for high-reliability embedded systems.

The XC4000E family was designed for cost-sensitive, high-volume industrial and instrumentation applications requiring field-upgradable logic with 5V compatibility and robust configuration security.

FAQ

What is the maximum operating frequency supported by XC4008E-4PG191I?

The XC4008E-4PG191I has a -4 speed grade specifying 15 ns CLB propagation delay, enabling reliable synchronous operation up to approximately 40 MHz for register-to-register paths in typical designs. Actual system frequency depends on logic depth, routing congestion, and I/O timing constraints - verified per design using Xilinx Foundation or Alliance software timing analysis.

Does XC4008E-4PG191I support in-system programming?

Yes, XC4008E-4PG191I supports in-system programming via its JTAG port compliant with IEEE 1149.1. Configuration bitstream can be loaded dynamically without power interruption, enabling field updates and diagnostics. The device does not retain configuration when powered off, requiring reload from external PROM or host processor on each power-up.

What package type and dimensions does XC4008E-4PG191I use?

XC4008E-4PG191I uses a 191-pin plastic quad flat pack (PQFP) with 28 mm × 28 mm body size and 0.65 mm lead pitch. It features gull-wing leads compatible with standard surface-mount reflow profiles. Thermal dissipation is managed through distributed V_CC and GND pins across all four sides.

Can XC4008E-4PG191I operate with 3.3V I/O interfaces?

No, XC4008E-4PG191I is a 5V-only device. Its I/O structure and internal voltage references require a nominal 5.0 V ±5% supply (V_CCO). Interfacing with 3.3V systems requires external level-shifting circuitry - such as dual-supply translators or resistor-divider networks - to avoid damage or signal integrity issues.

Is XC4008E-4PG191I still in active production?

XC4008E-4PG191I is discontinued by AMD/Xilinx but remains available through authorized legacy component distributors and Aetrix Electronics' long-term inventory program. Full datasheets, application notes, and configuration tools are archived and accessible for design reuse and repair support.