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Product Detailed Parameters
- Description：1.73728 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：1.73728 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 18QHTF21-1.73728-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.73728 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications with a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount assembly. The component supports an operating temperature range from -40°C to +85°C, ensuring reliability across industrial environments.
Feature Summary
- LVCMOS output interface for digital logic compatibility
- Integrated enable and disable control functionality
- Compact 4-SMD no-lead surface mount package design
Applications
- General-purpose clock signal generation
- Microcontroller system timing references
- Embedded digital circuit synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific handling or storage instructions provided in the manufacturer's datasheet to maintain component integrity during assembly.
Selection Notes
Select this oscillator when a precise 1.73728 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V supply constraint and the need for software-controllable enable/disable features. Evaluate the thermal performance within the -40°C to +85°C range against your environmental conditions. Compare package dimensions against available board space to ensure mechanical fit.
Part Context
This component belongs to the 18QHTF21 series of standard crystal oscillators produced by Mercury Electronic. The series offers various frequency options while maintaining consistent electrical characteristics and packaging. Mercury Electronic specializes in frequency control products, including quartz crystals and oscillators, providing timing solutions for electronic systems.
Replacement Considerations
Direct substitutes include other 1.73728 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications before substitution. Alternative part numbers from the same manufacturer may offer different frequency stability ratings.
