Overview
The 74LVT14DB,112 is a high-performance BiCMOS hex inverter with Schmitt-trigger inputs, designed and manufactured by NXP Semiconductors. This device is optimized for operation at a supply voltage (VCC) of 3.3 V and is capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. It features a wide supply voltage range from 2.7 to 3.6 V and is tolerant of slow input transitions, making it suitable for various digital logic applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 2.7 | 3.6 | V | ||
| Input Threshold Voltages (VT+ and VT-) | 600 mV (typical differential) | mV | |||
| Propagation Delay (tPLH) | VCC = 3.3 V | 1.0 | 3.8 | 5.7 | ns |
| Propagation Delay (tPHL) | VCC = 3.3 V | 1.0 | 3.2 | 4.5 | ns |
| Output Current Capability | +32 mA / -20 mA | mA | |||
| Operating Temperature Range | -40 °C | +85 °C | °C | ||
| Package Type | SSOP14 (SOT337-1) |
Key Features
- Different positive and negative going input threshold voltages due to the Schmitt trigger.
- Tolerant of slow input transitions, ensuring stable output even with gradual input changes.
- High noise immunity, enhancing the reliability of the device in noisy environments.
- TTL input and output switching levels, allowing direct interface with TTL logic circuits.
- Output capability of +32 mA and -20 mA, supporting a wide range of load conditions.
- Latch-up protection exceeds 500 mA per JESD78 class II level A, ensuring device safety.
- ESD protection: HBM (Human Body Model) exceeds 2000 V and MM (Machine Model) exceeds 200 V.
- Bus hold data inputs eliminate the need for external pull-up resistors to define unused inputs.
- IOFF circuitry provides partial power-down mode operation, preventing backflow current when powered down.
Applications
The 74LVT14DB,112 is versatile and can be used in various digital logic applications, including:
- Interface circuits between different logic families.
- Buffering and inverting signals in digital systems.
- Applications requiring high noise immunity and stable output signals.
- Partial power-down applications where IOFF circuitry is beneficial.
- TTL-compatible systems that require BiCMOS performance.
Q & A
- What is the primary function of the 74LVT14DB,112?
The primary function is to act as a hex inverter with Schmitt-trigger inputs, transforming slowly changing input signals into sharply defined output signals.
- What is the operating supply voltage range for the 74LVT14DB,112?
The device operates within a supply voltage range of 2.7 to 3.6 V.
- What are the key benefits of the Schmitt trigger in the 74LVT14DB,112?
The Schmitt trigger provides different positive and negative going input threshold voltages, enhances noise immunity, and speeds up slow input transitions.
- What is the output current capability of the 74LVT14DB,112?
The device can drive outputs up to +32 mA and -20 mA.
- Does the 74LVT14DB,112 have any special power-down features?
Yes, it includes IOFF circuitry that disables the output and prevents backflow current during partial power-down mode.
- What kind of ESD protection does the 74LVT14DB,112 offer?
The device offers ESD protection exceeding 2000 V for HBM and 200 V for MM.
- What are the typical propagation delays for the 74LVT14DB,112?
The typical propagation delays are 3.8 ns for tPLH and 3.2 ns for tPHL at VCC = 3.3 V.
- What is the operating temperature range for the 74LVT14DB,112?
The device operates within a temperature range of -40 °C to +85 °C.
- What package types are available for the 74LVT14DB,112?
The device is available in SSOP14 (SOT337-1), among other package types.
- Does the 74LVT14DB,112 require external pull-up resistors for unused inputs?
No, the bus hold data inputs eliminate the need for external pull-up resistors.
