18QHTF21-21.474837-PD

Oscillators Overview

The 18QHTF21-21.474837-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 21.474837 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes a standby (power down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise clock signals with low power consumption.

Oscillators Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output compatibility

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail is stable to maintain oscillator performance. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions. Check for any specific handling instructions regarding ESD sensitivity during assembly. Validate that the standby control signal aligns with your system's power management strategy.

Oscillators Selection Notes

Select this model when a 21.474837 MHz clock source is required with minimal power usage. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the small form factor for space-constrained designs. Verify that the operating temperature range meets environmental conditions. Compare against other Mercury oscillators if different frequencies or voltage levels are needed.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized small outline package. The 'PD' suffix indicates the presence of a power-down feature. These components are commonly used in portable electronics and industrial controls where size and power efficiency are critical constraints.

Oscillators Replacement Considerations

Direct replacements must match the 21.474837 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Consult manufacturer cross-reference lists for equivalent parts from other suppliers ensuring identical functional specifications.