CD74HC4053M96

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1. Description

The CD74HC4053M96 devices are digitally controlled analog switches that use silicon gate CMOS technology to achieve operating speeds similar to LSTTL with the low-power consumption of standard CMOS integrated circuits. These analog multiplexers and demultiplexers control analog voltages that may vary across the voltage supply range (for example, VCC to VEE). They are bidirectional switches that allow any analog input to be used as an output and vice versa. The switches have low ON resistance and low OFF leakages. In addition, all these devices have an enable control that, when high, disables all switches to their OFF state.

2. Features

    1. Wide Analog Input Voltage Range: ±5-V Maximum

    2. Low ON-Resistance

        – 70-Ω Typical (VCC – VEE = 4.5 V)

        – 40-Ω Typical (VCC – VEE = 9 V)

    3. Low Crosstalk Between Switches

    4. Fast Switching and Propagation Speeds

    5. Break-Before-Make Switching

    6. Wide Operating Temperature Range: –55°C to +125°C

    7. CD54HC and CD74HC Types

        – Operation Control Voltage: 2 V to 6 V

        – Switch Voltage: 0 V to 10 V

    8. CD54HCT and CD74HCT Types

        – Operation Control Voltage: 4.5 V to 5.5 V

        – Switch Voltage: 0 V to 10 V

        – Direct LSTTL Input Logic Compatibility VIL = 0.8-V Max, VIH = 2-V Min

        – CMOS Input Compatibility II ≤ 1 µA at VOL, VOH

3. Applications

    1. Digital Radio

    2. Signal Gating

    3. Factory Automation

    4. Televisions

    5. Appliances

    6. Programmable Logic Circuits

    7. Sensors

4. Feature Description

The CD74HC4053M96 line of multiplexers and demultiplexers can accept a wide range of analog signal levels from –5 to +5 V. They have low ON resistance, typically 70-Ω for VCC – VEE = 4.5 V and 40-Ω for VC – VEE = 4.5 V, which allows for very little signal loss through the switch. Binary address decoding on chip makes channel selection easy. When channels are changed, a break-beforemake system eliminates channel overlap.

5. Typical Application

One application of the CD74HC4053M96 device is used in conjunction with a microcontroller to poll a keypad. The microcontroller uses the channel-select pins to cycle through the different channels while reading the input to see if a user is pressing any of the keys. This is a very robust setup that allows for simultaneous key presses with very little power consumption. It also uses very few pins on the microcontroller. The down side of polling is that the microcontroller must frequently scan the keys for a press.