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Product Detailed Parameters
- Description：49.14 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：49.14 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 18QHTF21-49.140-OE is a standard frequency crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.14 MHz and utilizes LVCMOS output logic. The device is designed for surface-mount installation in a compact 4-SMD, No Lead package configuration. It functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. This component belongs to the H21 series of clock oscillators.
Feature Summary
- Provides stable timing signals via LVCMOS output interface
- Features integrated enable and disable functionality for power control
- Utilizes a compact surface-mount package design
Applications
- General-purpose digital circuit timing
- Embedded system clock generation
- Communication equipment signal processing
Procurement Notes
Verify the specific operating temperature range and load capacitance requirements against the target application environment 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 precisely to avoid assembly issues. Cross-reference the datasheet for any specific handling precautions related to electrostatic discharge sensitivity during manufacturing.
Selection Notes
Select this component when a low-voltage, surface-mount oscillator is required for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the enable pin utility if dynamic power saving is necessary. Evaluate the 49.14 MHz frequency against available alternatives if standard frequencies like 50 MHz are acceptable for the design.
Part Context
This part is part of Mercury Electronics' portfolio of frequency control products, which includes quartz crystals, TCXOs, and VCTCXOs. The manufacturer has produced timing components since 1973. The H21 series represents their line of surface-mount oscillators designed for modern electronic applications requiring precise clock signals.
FAQ
What is the output logic type for this oscillator?
The 18QHTF21-49.140-OE uses LVCMOS (Low Voltage Complementary Metal-Oxide-Semiconductor) output logic.
Does this component support power management features?
Yes, it includes an enable and disable function to control the oscillator's operation state.
