18QHTF21-57.393667-PD

Overview

The 18QHTF21-57.393667-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 57.393667 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a Standby (Power Down) control function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise timing signals within low-power electronic systems.

Feature Summary

• LVCMOS output logic for standard digital interface compatibility
• Integrated standby mode to reduce power consumption during idle periods
• Compact surface-mount package design suitable for space-constrained layouts

Applications

• General purpose clock generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interfaces requiring stable frequency sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions. Check availability status as some variants may be discontinued or subject to long lead times. Validate thermal performance under maximum operating conditions.

Selection Notes

Select this oscillator when a precise 57.393667 MHz signal is required with low power consumption. Consider the LVCMOS output level compatibility with downstream logic circuits. Evaluate the need for standby functionality to manage system power states. Compare package size constraints against available board real estate. Assess temperature stability requirements against the component's specified operating range.

Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply variant. The 'PD' suffix typically denotes the presence of a power-down feature. These components are widely used in consumer electronics and industrial equipment requiring reliable clock signals.

FAQ

Does the 18QHTF21-57.393667-PD support active high or active low standby control?

The datasheet specifies a Standby (Power Down) function but does not explicitly define the logic polarity for the control pin in the provided summary information.

What is the exact height dimension of the 4-SMD package?

While the length and width are specified as 2.0x1.6mm, the exact height dimension is not provided in the available public documentation.