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Product Detailed Parameters
- Description：115.44 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：115.44 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)：28mA
- 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 18QHTF21-115.440-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 115.44 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. Maximum supply current is specified at 28mA.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable functionality for power management
- Utilizes a base crystal resonator for frequency stability
Applications
- Digital signal processing systems requiring precise clocking
- Communication equipment utilizing high-frequency data transmission
- Embedded systems with low-voltage power constraints
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply rail is stable within the operational limits defined in the official datasheet. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues during manufacturing.
Selection Notes
Select this component when a fixed 115.44 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage and small form factor as primary constraints. Evaluate the enable/disable feature if dynamic power saving is necessary for the application. Compare against other Mercury Electronics models in the 18QHTF21 series for alternative frequencies or package options.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics Ind. Co. Ltd, which offers various frequency options within a standardized 2.0x1.6 mm SMD package. The series is characterized by low voltage operation and LVCMOS outputs, targeting portable and space-constrained electronic devices. Mercury Electronics is a established manufacturer of frequency control products based in Taiwan.
Replacement Considerations
Direct substitutes include other variants within the 18QHTF21 series such as 18QHTF21-44.200-OE or 18QHTF21-33.200-OE if different frequencies are acceptable. Ensure any replacement maintains the same 1.8V supply, LVCMOS output type, and 4-SMD package dimensions to fit existing board layouts.
