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Product Detailed Parameters
- Description：49.408 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：49.408 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)：23mA
- 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 18QHTF21-49.408-OE is a standard frequency crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.408 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- Provides stable clock signals via LVCMOS output interface
- Supports active enable and disable control functionality
- Operates on a low-voltage 1.8V power supply
- Utilizes a leadless SMD package for surface mounting
Applications
- Digital signal processing systems requiring precise clocking
- Communication equipment utilizing standard frequency references
- Embedded systems with low-voltage logic requirements
- Consumer electronics needing compact oscillator solutions
Procurement Notes
Verify the specific operating temperature range and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power architecture. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Check for any specific handling precautions related to electrostatic discharge during installation.
Selection Notes
Select this component when a 49.408 MHz reference is required with LVCMOS compatibility. Consider the 1.8V supply constraint and the need for enable/disable control. Evaluate the space constraints against the 4-SMD package size. Compare performance metrics such as phase noise and stability if available in official documentation to ensure suitability for the specific application environment.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The manufacturer has been producing crystals since 1973. This series typically offers standard oscillators with various frequencies and supply voltages. The 18QHTF21-49.408-OE represents a specific frequency variant within this broader family of surface-mount devices.
Replacement Considerations
No public substitute part numbers are confirmed in the provided data. Consult official distributor databases or manufacturer cross-reference lists for potential alternatives. Verify pinout compatibility and electrical specifications if considering third-party replacements.
