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Product Detailed Parameters
- Description：74.55 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：74.55 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 18QHTF21-74.550-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.55 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
- LVCMOS output logic for digital interface compatibility
- Integrated enable and disable control functionality
- Compact surface-mount package design
Applications
- General clock signal generation in electronic circuits
- Data communication systems requiring precise timing
- Embedded systems utilizing low-voltage logic interfaces
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 no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.
Selection Notes
Select this component when a stable 74.55 MHz clock source is required for LVCMOS-compatible digital logic. The choice is driven by the need for a low-profile surface-mount solution with integrated enable controls. Consider the 1.8V operating voltage constraint and ensure the application environment supports the specified temperature range for reliable oscillator performance.
Part Context
This part belongs to the Mercury Electronics 18QHTF series of standard XO oscillators. The series offers various frequencies within a small SMD form factor. The suffix OE indicates specific packaging or ordering configurations defined by the manufacturer. This model provides a dedicated clock signal for synchronous digital systems requiring precise frequency accuracy.
FAQ
What is the output logic type of the 18QHTF21-74.550-OE?
The output logic type is LVCMOS.
Does this oscillator support external control signals?
Yes, it features an enable/disable control function.
