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Product Detailed Parameters
- Description：74.2 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：74.2 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 18QHTF21-74.200-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 74.2 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable pin for power control
- Compact 4-SMD no-lead surface mount package
Applications
- General purpose clock generation
- Digital signal processing systems
- Communication equipment timing
Procurement Notes
Verify the exact frequency specification against official manufacturer documentation before procurement. Ensure the supply voltage matches the system requirement of 1.8V. Confirm the package type is compatible with the PCB footprint. Check for any specific ordering suffixes that may alter electrical characteristics or packaging details.
Selection Notes
Select this component when a 74.2 MHz clock source is required with low voltage operation. Consider the enable/disable functionality if power efficiency is critical. Verify that the LVCMOS output levels are compatible with the receiving logic inputs. Ensure the operating temperature range meets the application environment requirements.
Part Context
This part belongs to the Mercury Electronic 18QHTF series of standard crystal oscillators. The series offers various frequencies and voltage options. Mercury Electronic is a Taiwan-based manufacturer specializing in quartz crystals and oscillators. This specific model provides a fixed frequency solution for timing applications.
Replacement Considerations
Direct substitutes include other 74.2 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers. Ensure voltage, current consumption, and pinout compatibility. Verify frequency tolerance and stability specifications match the original design requirements.
