Overview
The MC74VHC1G125, produced by onsemi, is a single non-inverting 3-state buffer available in various tiny footprint packages such as SC-88A, SC-74A, UDFN6, SOT-553, and SOT-953. This device is designed to operate within a wide voltage range of 2.0 V to 5.5 V, making it versatile for interfacing between 5 V and 3 V circuits. The internal circuitry includes a buffered 3-state output, which enhances noise immunity and provides stable output signals. 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 |
|---|---|---|---|---|
| VCC (DC Supply Voltage) | 2.0 | 5.5 | V | |
| VIN (DC Input Voltage) | 0 | 5.5 | V | |
| VOUT (DC Output Voltage) | 0 | VCC + 0.5 | V | |
| VIH (High-Level Input Voltage) @ VCC = 5.5 V | 3.85 | V | ||
| VIL (Low-Level Input Voltage) @ VCC = 5.5 V | 1.65 | V | ||
| ICC (Quiescent Supply Current) | 1.0 | 40 | μA | |
| tPLH, tPHL (Propagation Delay, A to Y) | 3.5 | 12.0 | ns | |
| TA (Operating Temperature Range) | -55 | 125 | °C |
Key Features
- CMOS-level input thresholds for MC74VHC1G125 and TTL-level input thresholds for MC74VHC1GT125.
- Buffered 3-state output providing high noise immunity and stable output.
- Input structures protect against voltages up to 5.5 V, regardless of the supply voltage.
- Output structures protect against VCC = 0 V and output voltage exceeding VCC.
- Designed for 2.0 V to 5.5 V VCC operation.
- Available in tiny footprint packages such as SC-88A, SC-74A, UDFN6, SOT-553, and SOT-953.
Applications
The MC74VHC1G125 is suitable for a variety of applications where signal buffering and level translation are necessary. These include:
- Interface between 5 V and 3 V circuits.
- Signal buffering in digital circuits.
- Level translation in mixed-voltage systems.
- Use in battery backup and hot insertion scenarios due to its protective features.
Q & A
- What is the voltage range for the MC74VHC1G125?
The MC74VHC1G125 operates within a voltage range of 2.0 V to 5.5 V. - What are the input threshold levels for the MC74VHC1G125 and MC74VHC1GT125?
The MC74VHC1G125 has CMOS-level input thresholds, while the MC74VHC1GT125 has TTL-level input thresholds. - What is the purpose of the 3-state output in the MC74VHC1G125?
The 3-state output provides high noise immunity and stable output signals. - How does the MC74VHC1G125 protect against voltage mismatches?
The input and output structures protect against voltages up to 5.5 V, regardless of the supply voltage, and against VCC = 0 V and output voltage exceeding VCC. - What are the available package types for the MC74VHC1G125?
The device is available in SC-88A, SC-74A, UDFN6, SOT-553, and SOT-953 packages. - What is the operating temperature range for the MC74VHC1G125?
The operating temperature range is -55°C to 125°C. - What is the propagation delay for the MC74VHC1G125?
The propagation delay (tPLH, tPHL) ranges from 3.5 ns to 12.0 ns depending on the load and VCC. - Can the MC74VHC1G125 be used in battery backup scenarios?
Yes, the device is designed to protect against battery backup and hot insertion scenarios. - What is the quiescent supply current for the MC74VHC1G125?
The quiescent supply current (ICC) is typically 1.0 μA and can be up to 40 μA. - Is the MC74VHC1G125 suitable for mixed-voltage systems?
Yes, it is suitable for level translation in mixed-voltage systems.
