74LVC1G123DC-Q100H

Overview

The Nexperia 74LVC1G123DC-Q100H is a single retriggerable monostable multivibrator with Schmitt trigger inputs, housed in an 8-lead VSSOP (SOT765-1) package. It operates within a supply voltage range of 1.65 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features active HIGH output, negative-edge triggered input A, positive-edge triggered input B, and direct reset via CLR. Propagation delay ranges from 1.2 ns to 7.7 ns depending on load and voltage. Output drive capability reaches ±32 mA at 4.5 V.

Feature Summary

• Retriggerable functionality allows extension of the basic output pulse width up to a 100% duty factor by applying subsequent triggering edges.
• Schmitt trigger inputs provide high noise immunity and tolerance for slow input rise and fall times.
• Integrated IOFF circuitry disables outputs during partial power-down to prevent damaging backflow current.
• Direct reset input terminates the output pulse immediately and inhibits further triggering.

Applications

• Automotive electronics applications requiring AEC-Q100 Grade 1 qualification
• Mixed 3.3 V and 5 V logic environments utilizing level translation capabilities
• Timing circuits requiring precise pulse width control via external resistor and capacitor selection

Procurement Notes

Verify the specific ordering suffix DC corresponds to the VSSOP8 plastic very thin shrink small outline package (SOT765-1). Confirm that the Q100 designation indicates automotive qualification according to AEC-Q100 Grade 1 standards. Ensure the procurement documentation matches the Rev 5 datasheet dated 14 August 2023 for accurate electrical specifications and marking codes.

Selection Notes

Select this component when a single-channel monostable multivibrator with Schmitt triggers is required in a compact VSSOP8 footprint. It is suitable for designs needing retriggerable pulse generation or delay functions. Verify that the external timing components (REXT and CEXT) align with the recommended operating conditions for the target supply voltage and desired pulse width.

Part Context

This part belongs to the 74LVC1G123-Q100 family of single-function monostable multivibrators. The 'DC' variant specifically denotes the VSSOP8 package option, distinct from the TSSOP8 (DP) version. It shares functional characteristics with other LVC series devices but offers specific automotive reliability and low-voltage operation capabilities defined by the LVC logic family.

Replacement Considerations

The 74LVC1G123DP-Q100H serves as a pin-compatible alternative if a TSSOP8 package is acceptable instead of VSSOP8. Other monostable multivibrators may require significant schematic modifications due to differing trigger polarities or lack of Schmitt trigger inputs.