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Product Detailed Parameters
- Description：74.1758 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：74.1758 MHz
- Function：Enable/Disable
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：26mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-74.1758-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 74.1758 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features an enable/disable control interface. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- Supports active low or high enable/disable control functionality
- Provides stable LVCMOS clock signal output
- Utilizes a leadless surface-mount package design
Applications
- Embedded system clock generation
- Digital signal processing timing references
- Communication interface synchronization
Procurement Notes
Verify the specific suffix 'OE' against official datasheets to confirm enable pin polarity and electrical characteristics. Ensure the operating temperature range meets system requirements. Cross-reference the 4-SMD no-lead footprint dimensions with PCB layout guidelines to guarantee accurate assembly and soldering integrity during production.
Selection Notes
Select this component when a 1.8V supply and LVCMOS interface are required. Consider the 74.1758 MHz frequency for specific data rate synchronization needs. Evaluate the small form factor for space-constrained designs. Confirm that the enable function aligns with system power management strategies before finalizing the bill of materials.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers various frequencies and packages, serving as a reliable timing source for modern electronic circuits requiring low power consumption.
Replacement Considerations
Check the 18QHTF21-74.1758-PD variant if standby power down functionality is preferred over simple enable/disable control. Verify pinout compatibility and electrical specifications before substituting with other manufacturers' oscillators offering similar frequencies and voltages.
