TOSHIBA TC74HC4049AF(EL,F)

The TC74HC4049AF and TC74HC4050AF are high speed CMOS HEX BUFFERs fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The TC74HC4049AF is an inverting buffer, while the TC74HC4050AF is a non - inverting buffer. The internal circuits are composed of 3 - stages (TC74HC4049AF) or 2 - stages (TC74HC4050AF) of inverter, which provided high noise immunity and stable output. Input protection circuits are different from those of other high speed CMOS IC's. They eliminate the diodes on the VCC side thus providing of logic - level conversion from high - level voltages up to 15 V to low - level voltages. They are useful for battery back up circuits, because input voltage can be applied on IC's which are not biased by VCC.

• High speed: Δtₚd = 9 ns (typ.) at VCC = 5.0 V
• Low power dissipation: ICC = 1.0 μA (max) at Ta = 25 ℃
• High noise immunity: VNIH = VNIL = 28 % VCC (min)
• Symmetrical Output impedance: I IOH I = IOL = 6 mA (min)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC(opr) = 2.0 V to 6.0 V
• Power - down protection is provided on all inputs.