The TC74HCT00AF is a high-speed CMOS Quad 2-Input NAND Gate manufactured by Toshiba Semiconductor and Storage. This device is pin and function compatible with 74LS00 while offering significantly improved performance due to its CMOS technology. The TC74HCT00AF utilizes silicon gate C2MOS technology to achieve operating speeds comparable to LSTTL but with the low power consumption characteristic of CMOS.

Applications

• Logic gates in digital circuits
• Simple combinational logic
• Buffers
• Oscillators
• Clock generation

Features

• High Speed: tpd = 11 ns (typ.) at VCC = 5V.
• Low Power Dissipation: ICC = 4 μA (max) at Ta = 25°C.
• TTL Input Compatibility: VIH = 2.0 V (min), VIL = 0.8 V (max).
• Output Drive Capability: 10 LSTTL Loads.
• Symmetrical Output Impedance: |IOH| = IOL = 4 mA (min).
• Wide Operating Voltage Range: VCC = 4.5 V to 5.5 V.

Benefits

• Simplified system upgrades due to pin-to-pin compatibility with 74LS00 series.
• Reduced power consumption leads to energy-efficient designs and extended battery life in portable applications.
• TTL input compatibility allows easy interfacing with existing TTL logic circuits.
• High-speed operation improves overall system performance.
• Improved noise margin with CMOS logic levels.
• Reduced component count due to the integration of four NAND gates in a single package.

Additional Details

The TC74HCT00AF operates within a supply voltage range of 4.5V to 5.5V. The device is housed in a small outline package (SOIC), making it suitable for surface mount applications. The inputs are protected against static discharge. The device is commonly used in digital logic circuits for basic NAND gate functionality. A NAND gate provides a low output only when both inputs are high; otherwise, the output is high.

The operating temperature range for this device is typically between -40°C and +85°C. It adheres to JEDEC standards for CMOS integrated circuits. The symmetrical output impedance ensures balanced signal propagation, which minimizes signal distortion. Its TTL compatible input thresholds allows easy integration with TTL devices. The high noise immunity ensures reliable operation even in environments with electrical noise, which makes it suitable for industrial and automotive applications.