Overview
The MC74VHC1GT125DT1G is a single gate noninverting buffer fabricated with silicon gate CMOS technology. It is designed to achieve high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the low power dissipation characteristic of CMOS devices. This buffer is part of the VHC logic family and is compatible with TTL-type input thresholds, allowing it to interface seamlessly between different voltage levels, such as from 3.0V CMOS logic to 5.0V CMOS logic or from 1.8V CMOS logic to 3.0V CMOS logic. The device features a 3-state control input (OE(bar)) that must be set High to place the output into the high impedance state, enhancing its versatility in various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (DC Supply Voltage) | 2.0 | 5.5 | V | |
| VIN (DC Input Voltage) | 0 | 5.5 | V | |
| VIH (High-Level Input Voltage) at VCC = 5V | 2.0 | V | ||
| VIL (Low-Level Input Voltage) at VCC = 5V | 0.8 | V | ||
| VOH (High-Level Output Voltage) at IOH = -50 μA | 0.8 * VCC | V | ||
| VOL (Low-Level Output Voltage) at IOL = 50 μA | 0.1 * VCC | V | ||
| tPD (Propagation Delay) at VCC = 5V, CL = 15 pF | 3.5 | ns | ||
| ICC (Quiescent Supply Current) at VCC = 5V | 1 | μA | ||
| TA (Operating Temperature Range) | -55 | 125 | °C |
Key Features
- High Speed: Propagation delay of 3.5 ns (typ) at VCC = 5V.
- Low Power Dissipation: Quiescent supply current of 1 μA (max) at TA = 25°C.
- TTL-Compatible Inputs: High-level input voltage (VIH) of 2.0 V and low-level input voltage (VIL) of 0.8 V.
- CMOS-Compatible Outputs: High-level output voltage (VOH) greater than 0.8 * VCC and low-level output voltage (VOL) less than 0.1 * VCC.
- Over-Voltage Tolerance: Inputs and outputs are tolerant up to 5.5 V, regardless of the supply voltage.
- Partial Power Down Protection: IOFF supports partial power down protection.
- Package Options: Available in SC-88A, SC-74A, SOT-953, and UDFN6 packages.
- RoHS Compliant: Pb-free, halogen-free/BFR-free.
Applications
The MC74VHC1GT125DT1G is suitable for general usage and can be applied in various scenarios, including:
- Interface between different voltage level circuits (e.g., 5V to 3V or 1.8V to 3V).
- Logic-level translation in mixed-voltage systems.
- High-speed buffering in digital circuits.
- Applications requiring low power consumption and high speed operation.
Q & A
- What is the primary function of the MC74VHC1GT125DT1G?
The MC74VHC1GT125DT1G is a single gate noninverting buffer.
- What are the input voltage thresholds for the MC74VHC1GT125DT1G?
The device has TTL-compatible input thresholds with VIH of 2.0 V and VIL of 0.8 V at VCC = 5V.
- What is the propagation delay of the MC74VHC1GT125DT1G at VCC = 5V?
The propagation delay is typically 3.5 ns at VCC = 5V and CL = 15 pF.
- Is the MC74VHC1GT125DT1G over-voltage tolerant?
Yes, the inputs and outputs are tolerant up to 5.5 V, regardless of the supply voltage.
- What are the operating temperature ranges for the MC74VHC1GT125DT1G?
The operating temperature range is from -55°C to 125°C.
- What are the available package options for the MC74VHC1GT125DT1G?
The device is available in SC-88A, SC-74A, SOT-953, and UDFN6 packages.
- Is the MC74VHC1GT125DT1G RoHS compliant?
Yes, the device is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What is the quiescent supply current of the MC74VHC1GT125DT1G at VCC = 5V?
The quiescent supply current is typically 1 μA at VCC = 5V and TA = 25°C.
- Can the MC74VHC1GT125DT1G be used for logic-level translation?
Yes, it can be used to translate logic levels between different voltage systems, such as from 3.0V to 5.0V or from 1.8V to 3.0V.
- Does the MC74VHC1GT125DT1G support partial power down protection?
Yes, the device supports partial power down protection through the IOFF feature.
