Overview
The M74VHC1GT14DFT1G is a single gate CMOS Schmitt-trigger inverter fabricated with silicon gate CMOS technology. It is part of the 74VHC high-speed silicon-gate CMOS logic family from onsemi. This device achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the low power dissipation characteristic of CMOS technology.
The internal circuit of the M74VHC1GT14DFT1G is composed of three stages, including a buffer output, which provides high noise immunity and stable output. The device is compatible with TTL-type input thresholds and has a full 5V CMOS level output swing. It also features input protection circuitry that allows overvoltage tolerance, enabling it to act as a logic-level translator between different voltage levels of CMOS logic.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | −0.5 to +7.0 | V |
| DC Input Voltage (VIN) | −0.5 to +7.0 | V |
| DC Output Voltage (VOUT) | −0.5 to VCC + 0.5 | V |
| Propagation Delay (tPD) at VCC = 5V | 3.5 ns (Typ) | ns |
| Supply Current (ICC) at TA = 25°C | 1 µA (Max) | µA |
| TTL-Compatible Input Thresholds | VIL = 0.8V, VIH = 2.0V | V |
| CMOS-Compatible Output Levels | VOH > 0.8VCC, VOL < 0.1VCC @ Load | V |
| Power Down Protection | Provided on Inputs and Outputs | |
| Package Type | SC-88A / SC-70-5 / SOT-353 |
Key Features
- High Speed Operation: Similar to Bipolar Schottky TTL with propagation delays as low as 3.5 ns at VCC = 5V.
- Low Power Dissipation: Maximum supply current of 1 µA at TA = 25°C.
- TTL-Compatible Inputs: Compatible with TTL-type input thresholds (VIL = 0.8V, VIH = 2.0V).
- CMOS-Compatible Outputs: Full 5V CMOS level output swing (VOH > 0.8VCC, VOL < 0.1VCC @ Load).
- Input and Output Protection: Overvoltage tolerance up to 7V on inputs and protection when VCC = 0V.
- Balanced Propagation Delays: Ensures consistent timing in logic circuits.
- Pb-Free Packages: Available in lead-free packages.
- Pin and Function Compatibility: Compatible with other standard logic families.
Applications
The M74VHC1GT14DFT1G is suitable for a wide range of applications due to its high speed, low power consumption, and robust input/output protection features. It can be used in:
- Logic-Level Translation: Between different voltage levels of CMOS logic (e.g., 1.8V to 3V, 3V to 5V).
- Noise Immunity Enhancement: To improve the stability of logic signals in noisy environments.
- Waveform Squaring: To square up slowly changing waveforms.
- General Logic Circuits: In various digital circuits requiring high speed and low power consumption.
Q & A
- What is the M74VHC1GT14DFT1G?
The M74VHC1GT14DFT1G is a single gate CMOS Schmitt-trigger inverter fabricated with silicon gate CMOS technology.
- What are the key features of the M74VHC1GT14DFT1G?
Key features include high speed operation, low power dissipation, TTL-compatible inputs, CMOS-compatible outputs, and input/output protection.
- What is the propagation delay of the M74VHC1GT14DFT1G at VCC = 5V?
The propagation delay is typically 3.5 ns at VCC = 5V.
- What is the maximum supply current of the M74VHC1GT14DFT1G at TA = 25°C?
The maximum supply current is 1 µA at TA = 25°C.
- Is the M74VHC1GT14DFT1G compatible with TTL inputs?
Yes, it is compatible with TTL-type input thresholds (VIL = 0.8V, VIH = 2.0V).
- What kind of output levels does the M74VHC1GT14DFT1G provide?
The output levels are CMOS-compatible with a full 5V CMOS level output swing (VOH > 0.8VCC, VOL < 0.1VCC @ Load).
- Does the M74VHC1GT14DFT1G have input and output protection features?
Yes, it has overvoltage tolerance up to 7V on inputs and protection when VCC = 0V.
- What are the typical applications of the M74VHC1GT14DFT1G?
Typical applications include logic-level translation, noise immunity enhancement, waveform squaring, and general logic circuits.
- Is the M74VHC1GT14DFT1G available in Pb-free packages?
Yes, it is available in lead-free packages.
- Is the M74VHC1GT14DFT1G compatible with other standard logic families?
Yes, it is pin and function compatible with other standard logic families.
