18QHTF21-117.964-PD

Overview

The 18QHTF21-117.964-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 117.964 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes a power-down feature accessible via a standby control pin. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm by 1.6mm. This surface-mount oscillator is engineered for high-frequency timing applications requiring precise clock signals.

Feature Summary

• Generates a stable 117.964 MHz clock signal using LVCMOS logic levels
• Operates on a single 1.8V power supply rail
• Features integrated power-down capability for energy management
• Utilizes a small form-factor 4-SMD no-lead package design

Applications

• High-speed digital system clock generation
• Communication equipment timing references
• Network infrastructure signal processing
• Embedded systems requiring precise frequency standards

Procurement Notes

Verify the specific ordering suffix PD to confirm the tape-and-reel packaging configuration. Ensure the 1.8V supply requirement aligns with the target circuit design. Confirm the 4-SMD footprint matches the PCB layout constraints. Check the datasheet for operating temperature ranges suitable for the intended environment. Validate that LVCMOS output compatibility exists with the receiving logic inputs.

Selection Notes

Select this component when a 117.964 MHz frequency is strictly required for system synchronization. The 1.8V operation makes it suitable for low-voltage digital circuits. Consider the small 2.0x1.6mm package size for space-constrained designs. The power-down feature supports applications needing active power management. Ensure the LVCMOS output swing meets the noise margin requirements of the connected components.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies within the standard XO category. These devices are characterized by their compact SMD packages and low voltage operation. The manufacturer specializes in quartz crystal products with extensive industry experience. This specific model provides a fixed frequency solution for timing-critical applications.

Replacement Considerations

Direct substitutes must match the 117.964 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with other manufacturers offering similar SMD XO specifications.