TC74VHC21FK Overview
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The internal circuit is posed of 4 stages including a buffer output, which provide high noise immunity and stable output. An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage.
TC74VHC21FK Key Features
- High speed: tpd = 3.3 ns (typ.) at VCC = 5 V
- Low power dissipation: ICC = 2 μA (max) at Ta = 25°C
- High noise immunity: VNIH = VNIL = 28% VCC (min)
- Power down protection is provided on all inputs
- Balanced propagation delays: tpLH ≈ tpHL
- Wide operating voltage range: VCC (opr) = 2 to 5.5 V
- Pin and function patible with 74ALS21