Overview
The SN74LVC1G123DCTR is a single retriggerable monostable multivibrator designed and manufactured by Texas Instruments. This device is part of the LVC (Low-Voltage CMOS) technology family and is optimized for 1.65-V to 5.5-V VCC operation. It features output pulse-duration control through three distinct methods, utilizing external resistance and capacitance values to program the pulse duration. The device includes Schmitt-trigger inputs to handle slow input transition rates with jitter-free triggering at the outputs.
The SN74LVC1G123DCTR is available in various package options, including SSOP, VSSOP, and DSBGA, making it versatile for different design requirements. It supports mixed-mode voltage operation on all ports and includes features such as glitch-free power-up reset and Ioff for partial-power-down applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Min) | 1.65 | V |
| Supply Voltage (Max) | 5.5 | V |
| Input Type | Schmitt-Trigger | |
| Output Type | Push-Pull | |
| Supply Current | 20 | µA |
| IOL (Max) | 32 | mA |
| IOH (Max) | -32 | mA |
| Operating Temperature Range | -40 to 125°C, -40 to 85°C | °C |
| Maximum Propagation Delay (tpd) at 3.3V | 8 | ns |
Key Features
- Output Pulse-Duration Control: The device allows for pulse-duration control through three methods using external resistance and capacitance values.
- Schmitt-Trigger Inputs: The A and B inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering.
- Mixed-Mode Voltage Operation: Supports mixed-mode voltage operation on all ports, allowing inputs up to 5.5 V.
- Glitch-Free Power-Up Reset: Ensures that all outputs are in a defined state during power-up.
- Ioff Support: Includes Ioff circuitry for partial-power-down applications, preventing damaging current backflow when the device is powered down.
- Low Power Consumption: Suitable for battery-powered and portable devices due to its low power consumption.
- Compact Packaging: Available in SSOP, VSSOP, and DSBGA packages, making it ideal for space-constrained designs.
Applications
- Pulse Shaping and Timing Circuits: Useful in applications requiring precise timing and pulse generation.
- Switch Debounce Circuits: Can be used to debounce switches, converting multiple triggers into a single trigger.
- Automotive Electronics: Suitable for use in automotive systems due to its robust operating temperature range and low power consumption.
- Industrial Control Systems: Used in industrial control systems for timing and pulse generation.
- Portable Devices: Ideal for battery-powered devices such as digital cameras, GPS devices, and mobile internet devices.
- Embedded Systems: Can be integrated into embedded PCs, network attached storage (NAS), and solid-state drives (SSD).
Q & A
- What is the operating voltage range of the SN74LVC1G123DCTR?
The operating voltage range is from 1.65 V to 5.5 V.
- What types of inputs does the SN74LVC1G123DCTR have?
The device has Schmitt-trigger inputs.
- How is the output pulse duration controlled in the SN74LVC1G123DCTR?
The output pulse duration is controlled by selecting external resistance and capacitance values.
- What is the maximum propagation delay at 3.3 V for the SN74LVC1G123DCTR?
The maximum propagation delay at 3.3 V is 8 ns.
- Does the SN74LVC1G123DCTR support partial-power-down applications?
Yes, it includes Ioff circuitry for partial-power-down applications.
- What are the package options available for the SN74LVC1G123DCTR?
The device is available in SSOP, VSSOP, and DSBGA packages.
- Can the SN74LVC1G123DCTR be used in automotive electronics?
Yes, it is suitable for use in automotive systems due to its robust operating temperature range and low power consumption.
- How does the SN74LVC1G123DCTR handle slow input transition rates?
The device handles slow input transition rates with jitter-free triggering using Schmitt-trigger inputs.
- What is the purpose of the CLR input in the SN74LVC1G123DCTR?
The CLR input can be used to terminate the output pulse early or override the A or B inputs.
- Is the SN74LVC1G123DCTR suitable for battery-powered devices?
Yes, it is suitable due to its low power consumption and compact packaging.
