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Product Detailed Parameters
- Description：120.237 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：120.237 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)：28mA
- 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 18QHTF21-120.237-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 120.237 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.
Feature Summary
- Supports enable and disable control functions for active power management
- Utilizes LVCMOS output logic for digital interface compatibility
- Designed as a standard crystal oscillator with quartz type construction
Applications
- Digital signal processing systems requiring precise clock timing
- Communication equipment utilizing standard frequency references
- Embedded systems needing low-power standby capabilities
Procurement Notes
Verify the specific suffix OE indicates the enable/disable functionality distinct from other variants like PD or no suffix. Confirm the 1.8V supply requirement matches the target circuit design. Ensure the 4-SMD no lead package footprint aligns with the PCB layout specifications before finalizing procurement orders.
Selection Notes
Select this component when a 120.237 MHz reference is required with active power control. Compare against similar models such as the 18QHTF21-120.237-PD to determine if standby mode suffices instead of enable/disable. Evaluate thermal performance and load capacitance requirements against the host system's clock input specifications.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which includes various frequencies and control options. Related parts include the 18QHTF21-37.300-OE and 18QHTF21-44.200-OE, sharing the same package and voltage but differing in frequency and control logic.
Replacement Considerations
Direct substitutes within the same series include the 18QHTF21-120.237-PD, though it offers standby rather than enable/disable control. Verify pinout compatibility and electrical characteristics before swapping with other Mercury Electronics oscillators.
