Overview
The SN74LV14APWR is a hex Schmitt-trigger inverter produced by Texas Instruments. This device is designed to operate within a wide voltage range of 2 V to 5.5 V, making it versatile for various applications. The SN74LV14APWR contains six independent inverters, each performing the Boolean function Y = A. Although the device is now obsolete and no longer in production, it remains relevant for existing designs and legacy systems.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| VCC Operating Voltage | - | V | 2 | - | 5.5 |
| Positive-going Threshold (VT+) | VCC = 2.5 V | V | 1.75 | 1.75 | - |
| Positive-going Threshold (VT+) | VCC = 3.3 V | V | 2.31 | 2.31 | - |
| Positive-going Threshold (VT+) | VCC = 5 V | V | 3.5 | 3.5 | - |
| Negative-going Threshold (VT–) | VCC = 2.5 V | V | 0.75 | 0.75 | - |
| Negative-going Threshold (VT–) | VCC = 3.3 V | V | 0.99 | 0.99 | - |
| Negative-going Threshold (VT–) | VCC = 5 V | V | 1.5 | 1.5 | - |
| Hysteresis (ΔVT) | VCC = 2.5 V | V | 0.25 | 0.25 | - |
| Hysteresis (ΔVT) | VCC = 3.3 V | V | 0.33 | 0.33 | - |
| Hysteresis (ΔVT) | VCC = 5 V | V | 0.5 | 0.5 | - |
| High-level Output Voltage (VOH) | IOH = –50 μA, VCC = 2 V to 5.5 V | V | VCC – 0.1 | VCC – 0.1 | - |
| Low-level Output Voltage (VOL) | IOL = 50 μA, VCC = 2 V to 5.5 V | V | 0.1 | 0.1 | - |
| Propagation Delay Time (tpd) | CL = 15 pF, VCC = 5 V | ns | 5.1 | 8.6 | 10 |
Key Features
- Wide Operating Voltage Range: Operates from 2 V to 5.5 V, allowing for flexibility in various applications.
- Schmitt-Trigger Inputs: Allows for slow or noisy inputs, providing hysteresis to improve noise immunity.
- Mixed-Mode Voltage Operation: Supports mixed-mode voltage operation on all ports, enabling voltage translation between different logic levels.
- Ioff Feature: Supports partial-power-down mode operation, preventing damaging current backflow through the devices when they are powered down.
- High-Speed Operation: Maximum propagation delay time of 10 ns at 5 V.
- Low Output Ground Bounce and Undershoot: Typical VOLP < 0.8 V and VOHV > 2.3 V at VCC = 3.3 V and TA = 25°C.
Applications
- Network Switches: Used in network infrastructure for reliable signal processing.
- Wearable Health and Fitness Devices: Suitable for low-power, compact designs in wearable technology.
- PDAs and Mobile Devices: Ideal for portable electronic devices requiring low power consumption and high reliability.
- LCD TVs and Display Systems: Used in display systems for signal inversion and noise reduction.
- Power Infrastructure: Applied in power management and control circuits due to its robust and reliable performance.
Q & A
- What is the operating voltage range of the SN74LV14APWR?
The SN74LV14APWR operates within a voltage range of 2 V to 5.5 V.
- What type of inputs does the SN74LV14APWR have?
The device features Schmitt-trigger inputs, which provide hysteresis to improve noise immunity.
- How many independent inverters does the SN74LV14APWR contain?
The SN74LV14APWR contains six independent inverters.
- What is the maximum propagation delay time of the SN74LV14APWR at 5 V?
The maximum propagation delay time is 10 ns at 5 V.
- Does the SN74LV14APWR support mixed-mode voltage operation?
- What is the Ioff feature in the SN74LV14APWR?
The Ioff feature allows for partial-power-down mode operation, preventing damaging current backflow through the devices when they are powered down.
- What are some typical applications of the SN74LV14APWR?
It is used in network switches, wearable health and fitness devices, PDAs, LCD TVs, and power infrastructure.
- Is the SN74LV14APWR still in production?
No, the SN74LV14APWR is obsolete and no longer in production by Texas Instruments.
- What are the package options available for the SN74LV14APWR?
The device is available in TVSOP, SOIC, and SSOP packages.
- What is the significance of hysteresis in the SN74LV14APWR?
The hysteresis provided by the Schmitt-trigger inputs improves noise immunity by allowing for slow or noisy inputs.
