Overview
The SN74LVC1G123DCTRG4, produced by Texas Instruments, is a single retriggerable monostable multivibrator. This device is designed to operate over a wide voltage range of 1.65V to 5.5V VCC, making it versatile for various applications. It features output pulse-duration control through three distinct methods, utilizing external resistance and capacitance values to program the pulse duration. The device is available in the Texas Instruments NanoFree™ package and supports mixed-mode voltage operation on all ports, making it suitable for a broad range of electronic systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage (VCC) | 1.65 | - | 5.5 | V |
| Input Voltage | - | - | 5.5 | V |
| Propagation Delay Time (tpd) at 3.3V | - | - | 8 | ns |
| Operating Temperature Range | -40 | - | 125 | °C |
| Low-Level Output Current (IOL) at VCC = 3V | - | - | 16 | mA |
| External Timing Resistance (Rext) at VCC ≥ 3V | - | - | 1 kΩ | - |
| Junction-to-Ambient Thermal Resistance (RθJA) for SSOP package | - | - | 220 | °C/W |
Key Features
- Available in the Texas Instruments NanoFree™ package
- Supports 5V VCC operation and inputs up to 5.5V
- Maximum propagation delay time (tpd) of 8 ns at 3.3V
- Supports mixed-mode voltage operation on all ports
- Supports down translation to VCC
- 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 can also be used in switch debounce circuits to handle multiple triggers from switches, ensuring a single, stable output pulse.
Q & A
- What is the operating voltage range of the SN74LVC1G123DCTRG4?
The operating voltage range is from 1.65V to 5.5V VCC.
- What is the maximum propagation delay time (tpd) at 3.3V?
The maximum propagation delay time (tpd) at 3.3V is 8 ns.
- What types of inputs does the device support?
The device supports inputs up to 5.5V and features Schmitt-trigger circuitry on A and B inputs.
- How is the output pulse duration controlled?
The output pulse duration is controlled by selecting external resistance and capacitance values and can be triggered by three different methods involving the A, B, and CLR inputs.
- What is the purpose of the clear (CLR) input?
The clear (CLR) input overrides and terminates the output pulse.
- Does the device support mixed-mode voltage operation?
Yes, the device supports mixed-mode voltage operation on all ports.
- What kind of ESD protection does the device have?
The device has ESD protection exceeding JESD 22: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- What is the operating temperature range of the device?
The operating temperature range is from -40°C to 125°C.
- Can the device be used in switch debounce circuits?
Yes, the device can be used in switch debounce circuits to handle multiple triggers from switches.
- What are some common applications of the SN74LVC1G123DCTRG4?
Common applications include AV receivers, Blu-ray players, DVD recorders, desktop PCs, digital video cameras, and more.
