The TC74HC21AF(EL) is a high-speed dual 4-input AND gate from Toshiba Semiconductor and Storage, belonging to the High-speed CMOS (HC) logic family. This device operates with a supply voltage of 2V to 6V. It performs the logical AND function on four input signals. The output is HIGH only when all four inputs are HIGH; otherwise, the output is LOW. It's suitable for general-purpose logic applications where the AND function of multiple inputs is required.

Applications:

• Logic function implementation
• Address decoding
• Control logic
• Data comparison
• Signal gating

Features:

• High-speed operation: tpd = 11 ns (typ.) at VCC = 5V
• Wide operating voltage range: VCC = 2V to 6V
• Low power consumption: ICC = 1 μA (max.) at VCC = 5V
• Dual 4-input AND gates
• Symmetrical output drive: |IOH| = IOL = 4 mA
• Wide operating temperature range: -40°C to +85°C
• Package: SOIC14 (Small Outline Integrated Circuit)

Benefits:

• Fast logic operations in high-speed systems
• Low power consumption for energy efficiency
• Two independent AND gates for flexibility
• Suitable for a wide range of voltage levels
• Directly drives LEDs and other low-current loads
• Compact size for space-constrained applications

Additional Details:

The TC74HC21AF(EL) is fabricated using silicon gate CMOS technology. The device's inputs are equipped with clamp diodes. The 'AF' suffix denotes a surface mount package (SOIC14), and the 'EL' indicates an environmentally friendly lead-free version. Each AND gate operates independently, allowing for flexible circuit design. This device is frequently used in microprocessor systems, control logic circuits, and general-purpose digital logic applications. It is pin-compatible with standard TTL/CMOS AND gates.