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Product Detailed Parameters
- Description：74.7528 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：74.7528 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 18QHTF21-74.7528-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.7528 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Integrates LVCMOS output logic for digital signal interfacing
- Features active enable and disable control functionality
- Utilizes a surface-mount package design for automated assembly
Applications
- General clock generation for electronic circuits
- Digital system timing references
- Embedded device synchronization
Procurement Notes
Verify the specific frequency tolerance 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 4-SMD footprint matches the PCB layout constraints. Cross-reference the datasheet for operating temperature ranges to guarantee reliability under intended environmental conditions.
Selection Notes
Select this component when a precise 74.7528 MHz reference is required for low-voltage digital applications. The integrated enable pin allows for power management strategies within the system. Consider the small form factor suitable for space-constrained designs. Validate compatibility with the host controller's input thresholds and drive requirements.
Part Context
This oscillator belongs to the Mercury Electronics SMD oscillator series, which expanded from lead-type packages to surface-mount technologies. The manufacturer has decades of experience in quartz crystal production, offering products ranging from kilohertz to hundreds of megahertz frequencies for various industrial applications.
Replacement Considerations
Direct substitutes include other 74.7528 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and jitter before substitution.
