Overview
The MC74AC132DR2G, produced by onsemi, is a Quad 2-Input NAND Schmitt Trigger integrated circuit. This device is part of the MC74AC/74ACT series and is designed to transform slowly changing input signals into sharply defined, jitter-free output signals. It features four 2-input NAND gates, each incorporating a Schmitt trigger, which uses positive feedback to speed up slow input transitions and provide hysteresis between positive and negative-going input thresholds. This hysteresis is essentially insensitive to temperature and supply voltage variations, making the device robust against noise and voltage fluctuations.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 2.0 | 5.0 | 6.0 | V |
| Vin, Vout (DC Input/Output Voltage) | 0 | VCC | V | |
| TA (Operating Ambient Temperature Range) | -40 | 25 | 85 | °C |
| IOH (Output Current - High) | -24 | mA | ||
| IOL (Output Current - Low) | 24 | mA | ||
| tPLH (Propagation Delay) | 2.0 | 13.0 | ns | |
| tPHL (Propagation Delay) | 2.0 | 13.5 | ns | |
| CIN (Input Capacitance) | 4.5 | pF | ||
| CPD (Power Dissipation Capacitance) | 30 | pF |
Key Features
- Schmitt Trigger Inputs: Each circuit contains a 2-input Schmitt trigger that speeds up slow input transitions and provides hysteresis between positive and negative-going input thresholds.
- Outputs Source/Sink 24 mA: The device can source or sink up to 24 mA of current.
- TTL Compatible Inputs (for MC74ACT132): The MC74ACT132 version has TTL compatible inputs.
- Pb-Free Packages: The device is available in lead-free packages, making it compliant with environmental regulations.
- Greater Noise Margin: The Schmitt trigger inputs provide greater noise margin compared to conventional NAND gates.
Applications
The MC74AC132DR2G is suitable for a variety of applications where clear and stable digital signals are required, such as:
- Digital Logic Circuits: It can be used in digital logic circuits to improve signal integrity and reduce noise.
- Signal Conditioning: The Schmitt trigger feature makes it ideal for conditioning slowly changing or noisy input signals.
- Automotive and Industrial Control Systems: Its robustness against temperature and voltage variations makes it suitable for use in harsh environments.
- Consumer Electronics: It can be used in consumer electronics to enhance the reliability of digital circuits.
Q & A
- What is the primary function of the MC74AC132DR2G?
The primary function is to transform slowly changing input signals into sharply defined, jitter-free output signals using 2-input NAND gates with Schmitt trigger inputs.
- What is the supply voltage range for the MC74AC132?
The supply voltage range is from 2.0 V to 6.0 V for the MC74AC version and from 4.5 V to 5.5 V for the MC74ACT version.
- What is the maximum output current of the MC74AC132DR2G?
The device can source or sink up to 24 mA of current.
- Does the MC74AC132DR2G have TTL compatible inputs?
Yes, the MC74ACT132 version has TTL compatible inputs.
- What is the operating temperature range of the MC74AC132DR2G?
The operating ambient temperature range is from -40°C to 85°C.
- What is the propagation delay of the MC74AC132DR2G?
The propagation delay ranges from 2.0 ns to 13.5 ns depending on the supply voltage and temperature.
- Is the MC74AC132DR2G available in Pb-Free packages?
Yes, the device is available in lead-free packages.
- What is the input capacitance of the MC74AC132DR2G?
The input capacitance is typically 4.5 pF.
- What are the typical applications of the MC74AC132DR2G?
It is used in digital logic circuits, signal conditioning, automotive and industrial control systems, and consumer electronics.
- How does the Schmitt trigger in the MC74AC132DR2G improve signal quality?
The Schmitt trigger speeds up slow input transitions and provides hysteresis, which helps in reducing noise and improving signal stability.
