74LVC1G125FS3-7

Overview

The 74LVC1G125FS3-7 is a single non-inverting buffer and bus driver featuring a 3-state output, manufactured by Diodes Incorporated. It operates within a supply voltage range of 1.65V to 5.5V and provides an output drive capability of ±24mA at 3.3V. The device incorporates IOFF circuitry to support partial power-down applications by disabling the output and preventing damaging current backflow when powered down. Inputs are tolerant to 5.5V, enabling direct interface with TTL levels in mixed-voltage environments. It is housed in an X2-DFN0808-4 package.

Feature Summary

• Features a single non-inverting buffer with a 3-state output that enters a high-impedance state when the output enable pin receives a HIGH-level signal.
• Incorporates IOFF circuitry designed for partial power-down mode operation, which disables the output to prevent damaging current backflow during power-down states.
• Inputs accept voltages up to 5.5V, allowing compatibility and direct interface with TTL levels in mixed-voltage system environments.

Applications

• Voltage level shifting
• General purpose logic
• Power down signal isolation

Procurement Notes

Verify the specific FS3 suffix corresponds to the X2-DFN0808-4 package configuration before procurement. Confirm that the required operating temperature range aligns with the specified -40°C to +125°C limits. Ensure input signals remain within the absolute maximum ratings to prevent device failure. Check for compliance with RoHS and halogen-free requirements if environmental standards apply to the assembly process.

Selection Notes

Select this component for designs requiring a compact single-channel buffer with controlled output impedance. The wide supply voltage range supports various low-power digital systems. The inclusion of partial power-down capabilities makes it suitable for battery-operated devices where leakage current management is critical. Verify that the package dimensions fit the available PCB real estate constraints.

Part Context

This part belongs to the 74LVC1G125 series of single bus buffer gates with 3-state outputs produced by Diodes Incorporated. The FS3 ordering suffix specifically designates the X2-DFN0808-4 package variant. Other variants in the series utilize different packages such as SOT25 or SOT353, offering flexibility for diverse board layout requirements while maintaining identical logical functionality.

Replacement Considerations

Direct substitutes include other 74LVC1G125 variants from Diodes Incorporated using different packages like SE (SOT353) or W5 (SOT25). Cross-manufacturer equivalents must be verified against the electrical characteristics and pinout definitions to ensure functional compatibility without redesigning the host circuit.

FAQ

How does the device handle partial power-down scenarios?

The device includes IOFF circuitry that automatically disables the output when the device is powered down. This prevents damaging current backflow from the output pins into the VCC rail.

What is the function of the OE pin?

The Output Enable (OE) pin controls the 3-state output. When a HIGH-level signal is applied to the OE pin, the output enters a high-impedance state, effectively disconnecting it from the circuit.