CD4093BM96E4

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CD4093BM96E4 is a quad 2-input NAND Schmitt trigger with open collector outputs, that are characterized for use over a wide range of supply voltages up to 20V. This type of digital logic device is suitable for many general purpose logic applications, and is a popular choice for use in logic-level or power-switching circuits. CD4093BM96E4 provides the perfect combination of switching performance and lower power consumption, making it ideal for applications in which the designer needs to preserve battery life, maximize the speed of operation, and ensure reliable signal switching.

CD4093BM96E4 is available in 14-lead hermetic dual in-line ceramic packages. This logic device also contains a Schmitt trigger circuit to provide hysteresis control (positive threshold and negative threshold) in order to reduce switching noise. This hysteresis feature gives CD4093BM96E4 the ability to differentiate between voltage changes that are due to rapid switching transients and slow, gradual voltage swings that can cause noise problems. Therefore, the device helps eliminate the false switching caused by the presence of noise.

CD4093BM96E4 is designed to operate in the temperature range of -55°C to +125°C. The output is capable of sinking as much as 25mA of current at 1V DC, making it easy to connect to other logic devices or external components. The “open collector” output makes it easier to implement complementary outputs for applications such as power switching. The device also features low power consumption, approximately 2mA typical.

Applications for CD4093BM96E4 logic device include logic-level drivers, pulse distribution networks, pulse-delay circuits, low power amplifier stages, power switching circuits, power switching regulators, and multiplexing applications. Its features make it suitable for many circuit applications where noise might otherwise be a problem.

Working Principle of CD4093BM96E4

CD4093BM96E4 operates in the form of a differential switching circuit. It consists of four independent 2-input NAND Schmitt triggers. Each Schmitt trigger is connected in a manner such that each input pair (A & B) is connected causally. The Schmitt triggers are designed so that they can detect and hold waveshapes that have both positive and negative going transitions.

The differential switching circuit of CD4093BM96E4 works on the principle of two transistors connected in series between the two inputs and the output. The transistors act as switches, controlling the flow of current from the input to the output. When the input voltage is lower than the negative threshold voltage, the transistor connected to the positive terminal is enabled, providing a “high” logic level at the output of the circuit.

When the input voltage is higher than the positive threshold voltage, the transistor connected to the negative terminal is enabled, providing a “low” logic level at the output of the circuit. The threshold voltage difference between these two levels is called the hysteresis threshold. This feature of CD4093BM96E4 reduces the sensitivity of the circuit to noise and prevents false switching due to noise or other factors. The hysteresis is adjustable within certain limits.

The open collector outputs of CD4093BM96E4 make it easier to implement complementary outputs for applications such as power switching. The device can be used in combination with other logic devices, such as buffers, gates, and inverters, to construct complex logical circuits. In addition, the device features low power consumption, approximately 2 mA typical.

Conclusion

CD4093BM96E4 is a quad 2-input NAND Schmitt trigger logic device, featuring an open collector output structure and performing low power consumption. Its applications include logic-level drivers, pulse distribution networks, pulse-delay circuits, low power amplifier stages, power switching circuits, power switching regulators, multiplexing applications, etc. Its differential switching circuit operates on the principle of two transistors, who’s threshold voltage difference (hysteresis) between low and high logic levels is adjustable but limited. It provides the perfect combination of switching performance and lower power consumption, making it ideal for applications in which the designer needs to preserve battery life, maximize the speed of operation, and ensure reliable signal switching.

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