18QHTF21-1.100-PD

Overview

The 18QHTF21-1.100-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.1 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Compact 4-SMD no lead surface mount package

Applications

• Low-frequency clock generation in portable electronics
• Timing reference for microcontrollers requiring 1.1 MHz input
• Battery-powered devices utilizing standby modes

Procurement Notes

Verify the specific suffix 'PD' against official Mercury Electronics documentation to confirm the presence of the power-down feature. Ensure the operating voltage requirement of 1.8V aligns with the target system design. Confirm that the 4-SMD no lead package footprint matches the PCB layout specifications before procurement.

Selection Notes

Select this component when a precise 1.1 MHz timing source is required with minimal power consumption during idle states. The choice depends on the compatibility of the LVCMOS signal levels with the receiving circuitry. Consider the physical constraints of the 2.0x1.6mm package size relative to available board space.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and output types within a standardized small form factor. The 'PD' suffix indicates specific operational characteristics regarding power management compared to other variants in the lineup.

Replacement Considerations

Direct substitutes include the 18QHTF21-1.100-OE and 18QHTF21-1.180-PD from the same manufacturer. Verify that alternative parts match the 1.1 MHz frequency and 1.8V supply requirements. Check if the OE variant provides equivalent power-down capabilities.