Model No: SN74LVC1G123DCTR
Texas Instruments SN74LVC1G123DCTR
Manufacturer: Texas Instruments
SEMICON NO.: SN74LVC1G123DCTR
Package: 8-SSOP
Stock: In stock
Description: Monostable Multivibrator 74LVC 18.5 ns SM8
SEMICON NO.: SN74LVC1G123DCTR
Package: 8-SSOP
Stock: In stock
Description: Monostable Multivibrator 74LVC 18.5 ns SM8
Quantity :
| Mfr | Texas Instruments |
| Device Type | Single Retriggerable Monostable Multivibrator |
| Logic Family | 74LVC |
| Operating Voltage | 1.65 V to 5.5 V |
| Maximum Supply Voltage | 6.5 V |
| High-Level Output Current | -32 mA |
| Low-Level Output Current | 32 mA |
| Maximum Output Current | 100 mA |
| Typical Propagation Delay | 18.5 ns |
| Operating Temperature | -40°C to +125°C |
| Package | 8-SSOP |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The SN74LVC1G123DCTR is a single retriggerable monostable multivibrator (one-shot) integrated circuit from Texas Instruments, supplied in an 8-pin VSSOP (DCU) package on a tape and reel. It features Schmitt-trigger inputs for high noise immunity and is designed for clean pulse generation and timing applications in modern digital systems. Operating from a 1.65V to 5.5V supply voltage, it is part of the LVC (Low-Voltage CMOS) family, offering high-speed operation and balanced output drive.
Key Features and Highlights:
● Retriggerable Monostable Operation: The output pulse width can be extended by applying additional trigger pulses during the active output period
● Wide Supply Voltage Range: Operates from 1.65V to 5.5V, making it compatible with various logic levels (1.8V, 2.5V, 3.3V, 5V)
● Schmitt-Trigger Inputs: All inputs incorporate hysteresis, allowing for slow or noisy input signal transition handling without causing output jitter
● Over-Voltage Tolerant Inputs: Input pins can tolerate voltages up to 5.5V regardless of the VCC supply voltage
● Low Power Consumption: Features a typical Icc of 20 µA and supports partial power-down (Ioff) protection
Application Scenarios:
● Pulse Width Stretching and Debouncing: Used to extend short pulses for reliable detection by slower logic or microcontrollers, and to debounce mechanical switch contacts by generating a clean, fixed-duration output pulse.
● Timing and Delay Generation: Serves as a simple, adjustable delay line or timer in control sequences, power-up reset circuits, and sequential logic where a precise time interval is needed.
● Noise Filtering and Signal Conditioning: The Schmitt-trigger inputs make it effective for cleaning up noisy digital signals or converting slow analog edges into clean digital pulses with defined widths.
● Interface and Glitch Elimination: Employed in level translation and interfacing between different logic families, and to eliminate narrow glitches or spikes on signal lines that could cause false triggering in downstream circuits.
Frequently Asked Questions (FAQ):
Q: What is the difference between retriggerable and non-retriggerable monostable multivibrators?
A: A retriggerable device (like the SN74LVC1G123) can have its output pulse extended by applying a new trigger before the current pulse ends. A non-retriggerable device ignores new triggers until the current pulse completes. The retriggerable feature is useful for creating variable delays or detecting pulse trains.
● Retriggerable Monostable Operation: The output pulse width can be extended by applying additional trigger pulses during the active output period
● Wide Supply Voltage Range: Operates from 1.65V to 5.5V, making it compatible with various logic levels (1.8V, 2.5V, 3.3V, 5V)
● Schmitt-Trigger Inputs: All inputs incorporate hysteresis, allowing for slow or noisy input signal transition handling without causing output jitter
● Over-Voltage Tolerant Inputs: Input pins can tolerate voltages up to 5.5V regardless of the VCC supply voltage
● Low Power Consumption: Features a typical Icc of 20 µA and supports partial power-down (Ioff) protection
Application Scenarios:
● Pulse Width Stretching and Debouncing: Used to extend short pulses for reliable detection by slower logic or microcontrollers, and to debounce mechanical switch contacts by generating a clean, fixed-duration output pulse.
● Timing and Delay Generation: Serves as a simple, adjustable delay line or timer in control sequences, power-up reset circuits, and sequential logic where a precise time interval is needed.
● Noise Filtering and Signal Conditioning: The Schmitt-trigger inputs make it effective for cleaning up noisy digital signals or converting slow analog edges into clean digital pulses with defined widths.
● Interface and Glitch Elimination: Employed in level translation and interfacing between different logic families, and to eliminate narrow glitches or spikes on signal lines that could cause false triggering in downstream circuits.
Frequently Asked Questions (FAQ):
Q: What is the difference between retriggerable and non-retriggerable monostable multivibrators?
A: A retriggerable device (like the SN74LVC1G123) can have its output pulse extended by applying a new trigger before the current pulse ends. A non-retriggerable device ignores new triggers until the current pulse completes. The retriggerable feature is useful for creating variable delays or detecting pulse trains.
Compatible Alternative Multivibrator List
● SN74LVC1G123DCUR: The same device in an 8-pin VSSOP package but supplied in a smaller reel or tube packaging option; confirm the exact suffix for procurement based on assembly volume needs.
● TPUL1G113: A newer Texas Instruments single retriggerable monostable multivibrator with a different timing method and potentially smaller package options, designed as a pin-to-pin functional replacement in some applications.
● CD4098B or HEF4528B: Classic dual monostable multivibrator ICs from the CD4000 or HEF4000 series; these are older CMOS parts operating at higher voltages (3-15V) and are not direct pin-compatible but serve similar timing functions.
● SN74LVC1G123DCUR: The same device in an 8-pin VSSOP package but supplied in a smaller reel or tube packaging option; confirm the exact suffix for procurement based on assembly volume needs.
● TPUL1G113: A newer Texas Instruments single retriggerable monostable multivibrator with a different timing method and potentially smaller package options, designed as a pin-to-pin functional replacement in some applications.
● CD4098B or HEF4528B: Classic dual monostable multivibrator ICs from the CD4000 or HEF4000 series; these are older CMOS parts operating at higher voltages (3-15V) and are not direct pin-compatible but serve similar timing functions.
