The 74VHC4051AFT, 74VHC4052AFT and 74VHC4053AFT are high-speed, low-voltage drive analog multiplexer/demultiplexers using silicon gate CMOS technology. In 3 V and 5 V systems these can achieve high- speed operation with the low power dissipation that is a feature of CMOS. The 74VHC4051AFT, 74VHC4052AFT and 74VHC4053AFT offer analog/digital signal selection as well as mixed signals. The 74VHC4051AFT has an 8-channel configuration, the 74VHC4052AFT has an 4-channel x2 configuration, and the 74VHC4053AFT has a 2-channel x3 configuration. The switches for each channel are turned ON by the control pin digital signals. All control inputs are equipped with a newly developed input protection circuit that avoids the need for a diode on the plus side (forward side from the input to the VCC). As a result, for example, 5.5 V signals can be permitted on the inputs even when the power supply voltage to the circuits is off. As a result of this input power protection, the 74VHC4051AFT, 74VHC4052AFT and 74VHC4053AFT can be used in a variety of applications, including in the system which has two power supplies, and in battery backup circuits
Wide operating temperature range: Topr = -40 to 125 Low ON-resistance: RON = 45 Ω (typ.) (VCC = 3.0 V) RON = 24 Ω (typ.) (VCC = 4.5 V) Low power dissipation: ICC = 2.0 μA (max) (Ta = 25°C) High noise immunity: VIL = 0.8 V (max) VCC =3.0 V VIH = 2.0 V (min) VCC =3.0 V Power down protection is provided on all control inputs
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