Overview
The SN74LVC1G123DCURG4, produced by Texas Instruments, is a single retriggerable monostable multivibrator designed for a wide range of voltage operations from 1.65 V to 5.5 V. This device is part of the LVC family and is known for its versatility and robust features. It supports mixed-mode voltage operation on all ports and is available in the Texas Instruments NanoFree™ package. The SN74LVC1G123DCURG4 is ideal for applications requiring precise control over output pulse durations and high noise immunity.
Key Specifications
| Parameter | Unit | Min | Max |
|---|---|---|---|
| VCC Operating Voltage | V | 1.65 | 5.5 |
| Input Voltage | V | 0 | 5.5 |
| Output Drive Capability (VCC = 3.0 V) | mA | ±24 | |
| Propagation Delay (tpd) at 3.3 V | ns | 8 | |
| Operating Free-Air Temperature | °C | -40 | 125 |
| Junction-to-Ambient Thermal Resistance (RθJA) | K/W | 227 | |
| Package Type | VSSOP8 |
Key Features
- Supports 5-V VCC operation and accepts inputs up to 5.5 V.
- Schmitt-trigger circuitry on A and B inputs for slow input transition rates.
- Edge triggered from active-high or active-low gated logic inputs.
- Retriggerable for very long output pulses, up to 100% duty cycle.
- Overriding clear terminates output pulse.
- Glitch-free power-up reset on outputs.
- Ioff supports live insertion, partial-power-down mode, and back-drive protection.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- ESD protection exceeds JESD 22: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
Applications
- AV Receivers
- Blu-ray Players and Home Theaters
- DVD Recorders and Players
- Desktop PCs or Notebook PCs
- Digital Radio and Internet Radio Players
- Digital Video Cameras (DVC)
- Embedded PCs
- GPS: Personal Navigation Devices
- Mobile Internet Devices
- Network Attached Storage (NAS)
- Personal Digital Assistant (PDA)
- Server PSU
- Solid-State Drive (SSD): Client and Enterprise
- Video Analytics Servers
- Wireless Headsets, Keyboards, and Mice
The device is also suitable for switch debounce circuits, where it can convert multiple triggers from a switch into a single trigger, ensuring reliable operation.
Q & A
- What is the operating voltage range of the SN74LVC1G123DCURG4?
The operating voltage range is from 1.65 V to 5.5 V.
- What is the maximum propagation delay at 3.3 V?
The maximum propagation delay at 3.3 V is 8 ns.
- What types of inputs does the SN74LVC1G123DCURG4 support?
The device supports edge triggering from active-high or active-low gated logic inputs.
- How is the output pulse duration controlled?
The output pulse duration is controlled by selecting external resistance and capacitance values, and can also be reduced by taking the CLR input low.
- What is the significance of Schmitt-trigger circuitry on the inputs?
Schmitt-trigger circuitry on the A and B inputs provides sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs.
- What is the purpose of the clear (CLR) input?
The clear (CLR) input can terminate the output pulse.
- Does the SN74LVC1G123DCURG4 support live insertion and partial-power-down mode?
Yes, the device supports live insertion, partial-power-down mode, and back-drive protection through its Ioff feature.
- What kind of ESD protection does the SN74LVC1G123DCURG4 offer?
The device offers ESD protection exceeding JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- What are some common applications of the SN74LVC1G123DCURG4?
Common applications include AV receivers, Blu-ray players, DVD recorders, desktop PCs, digital video cameras, and more.
- What package options are available for the SN74LVC1G123DCURG4?
The device is available in the VSSOP8 package.
