An Introduction to HEF4093BP CMOS NAND Schmitt Trigger
29 December 2023
Ⅱ. Symbol, footprint and 3D model of HEF4093BP
Ⅲ. The specifications of HEF4093BP
Ⅳ. Limiting values of HEF4093BP
Ⅷ. What is the role of HEF4093BP's clamping diode?
HEF4093BP is a quad two-input NAND Schmidt trigger made by NXP. It has the characteristics of low power consumption, low output impedance, high noise resistance and high input impedance. HEF4093BP is suitable for digital logic circuits such as triggers, oscillators, counter, and displacement registers. It also applies to analog circuits, such as signal regulation, active filter and sampling maintenance circuits. This article will introduce the information of the HEF4093BP.
The HEF4093BP is a versatile integrated circuit featuring a quad two-input NAND gate design with Schmitt trigger inputs, accompanied by clamp diodes at the inputs. This unique configuration enables seamless connection of the input interface to voltages surpassing VDD, facilitated by the incorporation of current limiting resistors. In addition, the HEF4093BP's Schmitt trigger inputs are capable of converting slowly changing input signals into clearly defined and jitter-free output signals. Encased in a PDIP-14 package, this device operates within a voltage range of 3V to 15V and demonstrates resilience across a broad temperature spectrum ranging from -40°C to 125°C. Primarily designed for applications such as waveform and pulse shaping, as well as serving in roles such as unstable polytunnel oscillators and monostable polytunnel oscillators, the HEF4093BP stands as an ideal solution for electronic systems demanding precision and reliability.
Replacements and equivalents:
• CD4093BE
• HCF4093BEY
• Manufacturr: NXP Semiconductors
• Length: 19.5 mm
• Width: 6.48 mm
• Height: 3.2 mm
• PACKAGE / CASE: PDIP-14
• Packaging: Bulk
• Supply Voltage: 3V ~ 15V
• Operating Temperature: -40°C ~ 85°C
• NUMBER of Gates: 4 Gate
• Logic Type: CMOS
• Propagation delay time: 185 ns
• Mounting style: Through Hole
• Product Category: Logic Gates
It complies with the absolute maximum ratings system (IEC 60134). Voltages are referenced to Vss=0V (ground).
[1] For DIP14 packages: above Tamb=70°C, Ptot derates linearly with 12mW/K.
[2] For SO14 packages: above Tamb=70°C, Ptot derates linearly with 8mW/K.
The working principle of HEF4093BP is based on the logic state of input and the logic function of the NAND door. First, we provide 5V power for HEF4093BP. HEF4093BP has four independent NAND doors, and each door has two input pins. The input pin is used to receive digital signals, which can be a logical high level (usually indicated as 1) or logic low (usually represents 0). Each NAND door has two inputs and one output. The output of the NAND door is equal to the logic of the two inputs. Specifically, if both inputs are high levels of logic, the output is a low logic low. In other cases, the output is a logical high level. Each NAND door can be used as a dual -stabilized trigger. When the input signal changes, the trigger can switch from one steady -state to another. The design of HEF4093BP allows the output to feedback the output to the input, thereby forming a basic dual-stable-state trigger. This means that the output changes can affect the input and achieve the storage state.
In the past three months, the price and inventory trend of HEF4093BP on the market have shown different changes.
1. Price trend (2023.09.24 ~ 2023.12.17)
Note: The following is the average market reference price in RMB.
Huaqiangyun platform data shows that the HEF4093BP price of the Toshiba brand is stable between 0.8 yuan and 1 yuan. According to observations, the price of the product gradually rose from September to October, from 0.87 yuan to 1 yuan, and then fell to 0.8 yuan in December. It is worth noting that the HEF4093BP of the NXP brand was lower than Toshiba before. In November, the price was stable at 1 yuan, and in December, the price fluctuated slightly. The above data is for reference only, and the specific price may fluctuate due to market changes.
2. Inventory trend (2023.09.24 ~ 2023.12.17)
As shown in the figure, in mid-November, the inventory of HEF4093BP was slightly reduced compared to September and October. This trend shows that the market's demand for HEF4093BP is increasing. Overall, the current market inventory of HEF4093BP is relatively sufficient.
HEF4093BP can be applied to the following fields:
• Digital control system: It is an integrated circuit chip with rich logical functions that can play an important role in the digital control system. By using the HEF4093BP, we can easily implement various logic functions, such as and gates, or gates, and non-gates, to achieve precise control of the system.
• Digital signal processing: HEF4093BP can basic processing and analysis of digital signals, such as filtering, spectrum analysis and feature extraction. For some basic digital signal processing requirements, HEF4093BP can provide stable and efficient processing capabilities, simplify the design process and reduce costs.
• Oscillator: In a particular circuit setup, the HEF4093BP can function as an element within a straightforward oscillator circuit, generating periodic waveforms.
• Trigger: As a four-trigger integrated circuit, HEF4093BP can be used to store and process digital signal trigger applications, such as triggers in the timing circuit.
• Logic door circuit: HEF4093BP contains four door circuits. The powerful functions of these four door circuits enable HEF4093BP to be widely used in building various logical circuits, such as counter, comparators, etc.
• Power management: In complex power management circuits, HEF4093BP logical chip is a very important component. It can generate accurate control signals and trigger various power management operations to ensure the stable operation of the equipment.
• Pulse generator: Since the HEF4093BP contains Schmidt trigger, it can be used as a pulse generator to generate a stable pulse signal.
In HEF4093BP, the clamping diode plays a vital role. It can control the voltage in the circuit to ensure that it is stable within a specific range. Clamping diodes can effectively prevent damage to the circuit due to excessive voltage or low voltage, and provide safety protection for other components in the circuit. When the voltage in the circuit exceeds a predetermined value, the clamping diode will quickly conduct, limiting the voltage to a safe range, thereby protecting other components in the circuit from damage. This function is critical to maintaining stable operation of the circuit, especially in high-voltage or high-current applications.
Frequently Asked Questions
1. What does a Schmitt trigger do?
Schmitt triggers can be used to change a sine wave into a square wave, clean up noisy signals, and convert slow edges to fast edges.
2. How does HEF4093BP work?
The HEF4093BP contains four flip-flops that can be used as RS flip-flops or inverters. It usually works in digital circuits, receiving input signals and producing output signals based on specific logic conditions. The clock input (C, CP) and the reset input (R) control the state of the flip-flop.
3. What is the power supply voltage range for the HEF4093BP?
The typical power supply voltage range for the HEF4093BP is 3V to 15V.
4. What may the Schmitt trigger be used for?
Schmitt trigger devices are typically used in signal conditioning applications to remove noise from signals used in digital circuits, particularly mechanical contact bounce in switches.
