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Product Detailed Parameters
- Description：75.66 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：75.66 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 18QHTF21-75.660-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 75.66 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features an enable/disable control capability for power management. It is housed in a compact 4-SMD, no lead package, designed for surface-mount applications.
Feature Summary
- Standard XO configuration with LVCMOS output
- Integrated enable/disable functionality
- Compact 4-SMD no lead package design
Applications
- General clock signal generation
- Digital circuit timing references
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target application's specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the datasheet for temperature stability ratings to ensure compliance with operational environmental conditions.
Selection Notes
Select this component when a precise 75.66 MHz clock source is required with low voltage operation. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the enable pin feature if power conservation during idle states is necessary. Evaluate the physical dimensions of the 4-SMD package against available board space.
Part Context
This part belongs to the Mercury Electronics Ind. Co. Ltd oscillator series, which includes various frequencies and packages. The 18QHTF21 series typically denotes specific size and performance characteristics within their product line. It is distinct from other Mercury products like TCXOs or VCXOs due to its standard XO nature and fixed frequency output.
Replacement Considerations
Direct substitutes must match the 75.66 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter before substitution.
