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Product Detailed Parameters
- Description：74.0193 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：74.0193 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 18QHTF21-74.0193-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 74.0193 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, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- Integrates enable/disable functionality for power management
- Utilizes LVCMOS output logic for digital interface compatibility
- Features a leadless SMD package for automated assembly
Applications
- General-purpose clock generation
- Digital signal processing systems
- Embedded controller timing
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 PCB footprint matches the 4-SMD no-lead package dimensions specified in the official datasheet to prevent mounting issues during assembly.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside an active high/low enable pin for power optimization. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the small form factor if board space is constrained in portable or dense electronic designs.
Part Context
This part belongs to the H21 series of surface-mount oscillators from Mercury Electronics. The series is characterized by low power consumption and small footprints. The 'OE' suffix typically denotes the inclusion of an enable/disable pin, distinguishing it from standard continuous-output variants within the same frequency and package family.
Replacement Considerations
Direct substitutes must match the 74.0193 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility, specifically the enable pin configuration, to ensure seamless integration without circuit redesign.
