XCR3256XL-10TQG144I

Overview

The XCR3256XL-10TQG144I is a Complex Programmable Logic Device (CPLD) from the XCR3256XL family, manufactured by AMD/Xilinx. It features 256 macrocells and 120 I/O pins housed in a TQFP-144 surface-mount package. The device operates within a supply voltage range of 2.7 V to 3.6 V and supports an industrial temperature range of -40°C to +85°C. Key electrical specifications include a maximum operating frequency of 154 MHz, a maximum propagation delay of 7 ns, and a typical operating current of 30 mA. It utilizes EEPROM storage technology for non-volatile configuration.

Feature Summary

• Contains 256 macrocells and 6000 system gates with 2 Logic Array Blocks (LABs).
• Supports System In-Programmability (SIP) via JTAG interface.
• High-speed performance with 7 ns max propagation delay and 154 MHz clock frequency.
• Industrial grade operation (-40°C to +85°C) with 2.7 V to 3.6 V supply voltage.

Applications

• General-purpose logic replacement in industrial control systems.
• Address bus decoding and chip select generation in embedded designs.
• State machine implementation for communication protocols.
• Interface bridging between different voltage domains or logic families.

Procurement Notes

This component is listed as obsolete or end-of-life by the manufacturer. Availability is limited to existing stock or surplus channels. Verify authenticity carefully due to the high risk of counterfeits for legacy programmable logic devices. Check RoHS compliance status specifically, as older batches may differ from current environmental standards. Lead times are unpredictable and depend entirely on third-party distributor inventory.

Selection Notes

Select this part when a moderate density CPLD with high pin count (120 I/O) is required in a TQFP package. Ensure the design fits within the 256 macrocell limit and 6000 gate capacity. Verify that the 7 ns propagation delay meets timing requirements for the target clock speed of 154 MHz. Confirm that the 2.7 V to 3.6 V I/O voltage levels are compatible with the rest of the system logic.

Part Context

The XCR3256XL-10TQG144I belongs to the XCR3000XL series, which was designed to offer higher density and performance compared to earlier XCR3000 devices. It serves as a bridge between low-density PLDs and larger FPGAs. The '10' suffix indicates the speed grade, while 'TQG144' specifies the TQFP-144 package. The 'I' suffix denotes the industrial temperature range. This series is largely superseded by newer Xilinx FPGA and CPLD lines.

Replacement Considerations

No direct public substitute is confirmed. Higher density alternatives in the Xilinx portfolio include the XC9500XL or Spartan/FPGA families, though these require significant design re-verification. For pin-compatible replacements, check with authorized distributors for any remaining original equipment manufacturer stock, as cross-manufacturer pin compatibility is not guaranteed.