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Product Detailed Parameters
- Description：7.1640625 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：7.1640625 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)：21mA
- 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 18QHTF21-7.1640625-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 7.1640625 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, no lead package, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output interface for digital logic compatibility
- Integrated enable/disable control pin for power optimization
- Compact 4-SMD no lead surface-mount package design
Applications
- General-purpose digital circuit timing
- Embedded system clock generation
- Consumer electronics timing references
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 PCB footprint matches the 4-SMD no lead package dimensions provided in the official mechanical drawing to prevent assembly issues.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside an enable/disable feature for power efficiency. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the 4-SMD no lead form factor for space-constrained designs where traditional leaded packages are unsuitable.
Part Context
This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequency options within a small surface-mount package. Mercury Electronics specializes in quartz crystal and oscillator manufacturing, providing frequency control solutions for electronic devices.
Replacement Considerations
Direct substitutes include other 18QHTF21 series variants with compatible frequencies or different supply voltages if the enable function remains necessary. Verify electrical parameters such as output swing and current consumption when cross-referencing with alternative manufacturers' offerings.
