TC74HC4050AFTEL

The TC74HC4049AFT and TC74HC4050AFT 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 TC74HC4049AFT is an inverting buffer, while the TC74HC4050AFT is a non-inverting buffer. The internal circuits are composed of 3-stages (TC74HC4049AFT) or 2-stages (TC74HC4050AFT) 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.

Key features

• Wide operating temperature range: Topr = -40 to 125 °C
• High speed: Δtpd = 9 ns (typ.) at VCC = 5.0 V
• Low power dissipation: ICC = 1.0 μA (max) at Ta = 25 °C
• High noise immunity: VNIH = VNIL = 28 % VCC (min)
• Symmetrical Output impedance: | IOH | = IOL = 6 mA (min)
• Balanced propagation delays: ΔtPLH ≈ tPHL
• Wide operating voltage range: VCC(opr) = 2.0 V to 6.0 V
• Power-down protection is provided on all inputs.