CD74HCT86E – HARRIS

Overview

The Texas Instruments CD74HCT86E is a high-speed, quad 2-input XOR gate designed for digital logic applications. Its primary function is to implement the exclusive-OR Boolean operation, outputting a logic HIGH only when its two inputs are at differing logic states. A critical design consideration for the HCT family, including this device, is the trade-off between its TTL-compatible input thresholds and its CMOS output drive capabilities; while enabling easy interfacing with older TTL systems, careful attention must be paid to output loading to avoid exceeding the specified current limits and impacting switching speed.

Key Features

• Logic Function: Quad 2-Input Exclusive-OR (XOR)
• Logic Family: High-Speed CMOS (HCT)
• Propagation Delay: 32 ns (typical)
• Operating Supply Voltage: 4.5 V to 5.5 V
• Output Current: ±4 mA (low/high level)
• Package: PDIP-14 (Through Hole), 19.3 mm x 6.35 mm x 4.57 mm

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Arithmetic circuit implementation (e.g., adders, subtractors)
• Data comparison and error detection logic
• Parity generation and checking circuits
• Control signal multiplexing and demultiplexing