18QHTF21-59.300-PD

Overview

The 18QHTF21-59.300-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a fixed frequency of 59.3 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm. This component serves as a precise clock source for digital circuits requiring low-profile surface-mount integration.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital loads
• Includes power-down functionality to enable standby mode operation
• Utilizes a compact 4-SMD no-lead package for space-constrained designs

Applications

• General purpose clock generation for embedded systems
• Timing reference for consumer electronics devices
• Clock source for portable digital equipment

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly errors. Cross-reference the part number suffix to confirm the packaging format and tape-and-reel specifications if automated placement is required.

Selection Notes

Select this component when a low-voltage 1.8V clock source is required for space-limited applications. The LVCMOS output is suitable for standard CMOS logic families. Consider the power-down feature if energy efficiency during idle states is a priority. Verify that the 59.3 MHz frequency meets the system timing requirements without the need for additional frequency multiplication or division stages.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The brand specializes in quartz crystals and oscillators, offering various packages and frequencies. The 18QHTF21 series indicates a specific form factor and performance class within their product line, targeting general-purpose timing applications in modern electronic assemblies.

Replacement Considerations

Direct substitutes must match the 59.3 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Check equivalent parts from other manufacturers for pin compatibility and electrical parameter alignment. Verify that any replacement supports the same power-down control mechanism.