The TC74VHC14AF is a high-speed CMOS Schmitt trigger inverter fabricated with silicon gate CMOS technology by Toshiba Semiconductor and Storage. It achieves high-speed operation similar to equivalent Bipolar Schottky TTL devices, while maintaining the CMOS low power dissipation. Due to the Schmitt trigger action, the TC74VHC14AF features different thresholds for positive-going (VT+) and negative-going (VT-) signals. These devices are used in applications where noise or slow input signals could cause problems for standard inverters.

Applications

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators
• High-noise-environment applications

Features

• High-speed operation: tpd = 5.2 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
• High noise immunity: VH = 1.7 V (min), VL = 0.8 V (max)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |IOH| = IOL = 8 mA (min)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 2 V to 5.5 V
• Pin and function compatible with 74HC14

Benefits

• Increased system performance due to high-speed operation.
• Reduced power consumption leading to longer battery life in portable devices.
• Improved noise immunity ensures reliable operation in noisy environments.
• Ability to drive a large number of loads simplifies system design.
• Symmetrical output impedance minimizes signal distortion.
• Balanced propagation delays ensure accurate timing.
• Wide operating voltage provides flexibility in power supply design.

Additional Details

The TC74VHC14AF is supplied in a SOP14 package and is suitable for surface mount applications. The operating temperature range is -40°C to 85°C.

The inputs are equipped with protection circuits against static discharge or transient excess voltage. This ensures the device is robust and reliable in demanding applications.