Overview
The SN74121DE4 is a monostable multivibrator integrated circuit produced by Texas Instruments. This component is part of the 7400 series and is designed to generate a single pulse of a fixed duration in response to a trigger signal. It features Schmitt-trigger inputs, which provide noise immunity and stable operation. The SN74121DE4 is widely used in various electronic circuits where a precise timing signal is required.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 14-SOIC (0.154", 3.90mm Width) |
| Number of Pins | 14 |
| Logic Type | Monostable |
| Independent Circuits | 2 |
| Schmitt Trigger Input | No (but has Schmitt-trigger characteristics) |
| Propagation Delay | 45ns |
| Output Current | 400µA (high), 16mA (low) |
| Supply Voltage | 4.75 V ~ 5.25 V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| RoHS Compliance | Yes |
Key Features
- Monostable multivibrator with Schmitt-trigger inputs for noise immunity.
- Generates a single pulse of fixed duration in response to a trigger signal.
- Available in 14-pin SOIC package.
- Operating temperature range: 0°C to 70°C.
- Supply voltage range: 4.75 V to 5.25 V.
- Propagation delay of 45ns.
- Output current capability: 400µA (high), 16mA (low).
- RoHS compliant.
Applications
The SN74121DE4 is versatile and can be used in a variety of applications, including:
- Timing circuits: Generating precise timing signals.
- Pulse generation: Creating single pulses of fixed duration.
- Noise reduction: Utilizing Schmitt-trigger inputs to improve noise immunity.
- Sequential logic circuits: As part of more complex digital circuits requiring stable timing signals.
Q & A
- What is the SN74121DE4 used for? The SN74121DE4 is used as a monostable multivibrator to generate a single pulse of fixed duration in response to a trigger signal.
- What type of package does the SN74121DE4 come in? The SN74121DE4 comes in a 14-pin SOIC package.
- What is the operating temperature range of the SN74121DE4? The operating temperature range is 0°C to 70°C.
- What is the supply voltage range for the SN74121DE4? The supply voltage range is 4.75 V to 5.25 V.
- Does the SN74121DE4 have Schmitt-trigger inputs? Yes, it has Schmitt-trigger characteristics on its inputs.
- What is the propagation delay of the SN74121DE4? The propagation delay is 45ns.
- Is the SN74121DE4 RoHS compliant? Yes, it is RoHS compliant.
- What are the output current capabilities of the SN74121DE4? The output current capabilities are 400µA (high) and 16mA (low).
- Where can I use the SN74121DE4 in my circuit design? You can use it in timing circuits, pulse generation, noise reduction, and sequential logic circuits.
- How many independent circuits does the SN74121DE4 contain? The SN74121DE4 contains 2 independent circuits.
