Overview
The MC74VHC1G14DTT1G, produced by onsemi, is a single Schmitt-Trigger Inverter integrated circuit. This device is available in a tiny footprint TSOP-5 package, making it ideal for space-constrained applications. The MC74VHC1G14 features CMOS-level input thresholds, while its counterpart, the MC74VHC1GT14, has TTL-level input thresholds. The internal circuit consists of three stages, including a buffered output, which enhances noise immunity and provides stable output. The input and output structures are designed to protect the device from voltage mismatches, battery backup, hot insertion, and other potential damage scenarios.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| DC Supply Voltage (VCC) | -0.5 | 6.5 | V | |
| DC Input Voltage (VIN) | -0.5 | 6.5 | V | |
| DC Output Voltage (VOUT) | -0.5 | VCC + 0.5 | V | |
| Positive Input Threshold Voltage (VT+) | 2.0 | 3.15 | 3.85 | V |
| Negative Input Threshold Voltage (VT-) | 0.9 | 1.35 | 1.65 | V |
| Hysteresis Voltage (VH) | 0.30 | 0.40 | 0.50 | V |
| Input Leakage Current (IIN) | ±1.0 | μA | ||
| Quiescent Supply Current (ICC) | 40 | μA | ||
| Operating Temperature Range (TA) | -55 | 125 | °C |
Key Features
- CMOS-level input thresholds for MC74VHC1G14 and TTL-level input thresholds for MC74VHC1GT14.
- Three-stage internal circuit with a buffered output for high noise immunity and stable output.
- Input structures provide protection against voltages up to 5.5 V, regardless of the supply voltage.
- Output structures protect the device when VCC = 0 V and when the output voltage exceeds VCC.
- Operates over a wide voltage range from 2.0 V to 5.5 V.
- Available in various tiny footprint packages including TSOP-5, SC-88A, SOT-953, and UDFN6.
Applications
The MC74VHC1G14DTT1G is suitable for a variety of applications where a single Schmitt-Trigger Inverter is required. These include:
- Interface between 5 V and 3 V circuits.
- Noise reduction and signal conditioning in digital circuits.
- Battery backup and hot insertion scenarios.
- General-purpose digital logic applications requiring high noise immunity.
Q & A
- What is the primary function of the MC74VHC1G14DTT1G?
The MC74VHC1G14DTT1G is a single Schmitt-Trigger Inverter, which inverts the input signal while providing hysteresis to improve noise immunity. - What are the input threshold levels for the MC74VHC1G14 and MC74VHC1GT14?
The MC74VHC1G14 has CMOS-level input thresholds, while the MC74VHC1GT14 has TTL-level input thresholds. - What is the operating voltage range for the MC74VHC1G14DTT1G?
The device operates over a voltage range from 2.0 V to 5.5 V. - What types of packages are available for the MC74VHC1G14?
The device is available in TSOP-5, SC-88A, SOT-953, and UDFN6 packages. - What is the significance of the hysteresis voltage in the MC74VHC1G14?
The hysteresis voltage (VH) helps in reducing noise by providing a difference between the positive and negative input threshold voltages. - Can the MC74VHC1G14 be used in battery backup and hot insertion scenarios?
Yes, the device is designed to protect against voltage mismatches, battery backup, and hot insertion. - What is the maximum operating temperature range for the MC74VHC1G14DTT1G?
The device can operate over a temperature range from -55°C to 125°C. - What is the quiescent supply current (ICC) for the MC74VHC1G14?
The quiescent supply current is typically up to 40 μA. - How does the MC74VHC1G14 protect against input voltage exceeding the supply voltage?
The input structures provide protection when voltages up to 5.5 V are applied, regardless of the supply voltage. - What are some common applications of the MC74VHC1G14DTT1G?
Common applications include interface between 5 V and 3 V circuits, noise reduction, and general-purpose digital logic.
