18QHTF21-74.175824-PD

Overview

The 18QHTF21-74.175824-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 74.175824 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby (power down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Standby control capability for power management
• Compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded microcontroller clock sources

Procurement Notes

Verify the specific ordering suffix to ensure the correct control function and voltage level. Confirm that the 1.8V supply requirement matches the target circuit design. Check package dimensions against PCB footprint specifications to ensure mechanical compatibility during assembly.

Selection Notes

Select this component when a precise 74.175824 MHz reference is required with low power consumption. The LVCMOS output is suitable for standard digital logic families. Ensure the system design accommodates the standby control pin if power saving modes are utilized in the application.

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. The -PD suffix typically indicates the power down feature, distinguishing it from other variants like -OE which may offer enable/disable controls.

Replacement Considerations

Direct substitutes must match the 74.175824 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pinout compatibility and electrical specifications before swapping with other manufacturers' components.