The MC74VHC1G125 is an advanced high speed CMOS noninverting 3–state buffer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. The internal circuit is composed of three stages, including a buffered 3–state output which provides high noise immunity and stable output. The MC74VHC1G125 input structure provides protection when voltages up to 7V are applied, regardless of the supply voltage. This allows the MC74VHC1G125 to be used to interface 5V circuits to 3V circuits.
This datasheet describes the MC74VHC1G125, an advanced high‑speed CMOS non‑inverting 3‑state buffer with low power dissipation and high noise immunity. It includes the pinout for the 5‑lead SOT‑353 package, functional tables, and ordering information.
Key sections cover maximum ratings, recommended operating conditions, detailed DC and AC electrical characteristics, package dimensions, and tape‑and‑reel handling specifications, followed by legal notices and contact details for ON Semiconductor support.
| Typical propagation delay (tpp) | 3.5 ns (Typ) at Vcc=5 V |
|---|---|
| Low‑power dissipation (Icc) | 2 µA (Max) at 25 °C |
| Supply voltage range (VCC) | -0.5 V to +7.0 V |
| Input diode current | -20 mA |
| Output diode current | +20 mA |
| Maximum output current per pin | 25 mA |
| Power dissipation (still air) | 200 mW |
| Storage temperature range | -65 °C to +150 °C |
| Operating temperature range | -55 °C to +85 °C |
The typical propagation delay (tpp) is 3.5 ns at a 5 V supply.
The recommended supply voltage is 2.0 V to 5.5 V.
Each output pin can source up to 25 mA.