18QHTF21-42.7581-PD

Oscillators Overview

The 18QHTF21-42.7581-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.7581 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports standby mode via power-down functionality
• Utilizes LVCMOS output logic interface
• Compact surface-mount form factor

Oscillators Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 42.7581 MHz clock source is required for low-voltage digital systems. The LVCMOS output ensures compatibility with standard logic families operating at 1.8V. Consider the power-down feature if system-level power efficiency is a priority. Verify that the physical dimensions fit within the constrained space of the intended electronic enclosure.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The manufacturer specializes in quartz crystals and oscillators, offering various packages and frequencies. This specific model represents a small-form-factor option suitable for modern portable and high-density electronic designs requiring reliable timing signals.

Oscillators Replacement Considerations

Direct substitutes must match the 42.7581 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Check datasheets for equivalent parts from other manufacturers ensuring identical pinout and electrical characteristics to maintain system compatibility without redesign.