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Product Detailed Parameters
- Description：76.121875 M XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：76.121875 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 18QHTF21-76.121875-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 76.121875 MHz and utilizes LVCMOS output logic levels. The device features an enable/disable control function powered by a 1.8V supply voltage. It is housed in a compact 4-SMD, no lead package with dimensions of 0.079 inches in length and 0.063 inches in width, equivalent to 2.00mm x 1.60mm.
Feature Summary
- Provides stable clock signals via LVCMOS output interface
- Includes hardware enable and disable control functionality
- Designed for low-voltage operation at 1.8V
- Utilizes a small form factor surface-mount package
Applications
- General digital circuit timing references
- Embedded system clock generation
- Communication equipment signal processing
- Consumer electronics internal synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the PCB footprint matches the 2.00mm x 1.60mm 4-SMD no lead package dimensions to prevent assembly issues. Check for any specific handling instructions regarding electrostatic discharge protection during installation.
Selection Notes
Select this component when a precise 76.121875 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage constraint and ensure compatibility with downstream logic levels. Evaluate the space constraints within the enclosure, as the 4-SMD package offers a minimal footprint suitable for dense layouts. Compare performance characteristics such as phase noise and stability if available in official documentation to meet application reliability standards.
Part Context
This oscillator belongs to the standard XO series from Mercury Electronics Ind. Co. Ltd, a manufacturer specializing in quartz frequency control products. The company has a long history in Taiwan's quartz industry. This specific model represents a single-ended output solution designed for applications requiring reliable timing signals in compact electronic devices.
Replacement Considerations
No public confirmed substitute part numbers are identified in the provided data. Direct replacement requires matching the exact frequency, voltage, package, and output type.
