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Product Detailed Parameters
- Description：49.248 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：49.248 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)：23mA
- 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 18QHTF21-49.248-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 49.248 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features enable/disable functionality for power management. It is designed for surface mount installation in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The unit supports an operating temperature range from -40°C to 85°C and has a maximum supply current of 23mA.
Feature Summary
- Integrated enable and disable control mechanism for efficient power management
- Compact surface-mount design suitable for space-constrained applications
- LVCMOS output interface compatible with standard digital logic circuits
Applications
- Portable electronic devices requiring low-power clock signals
- Embedded systems utilizing LVCMOS-compatible processors
- Industrial control modules operating within extended temperature ranges
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable pin logic levels are compatible with your microcontroller or GPIO outputs to prevent unintended oscillator states during operation.
Selection Notes
Select this component when a precise 49.248 MHz timing reference is required in a minimal footprint. Consider the 1.8V supply constraint and the need for software-controllable power gating. Evaluate the thermal performance within the -40°C to 85°C range to ensure stability under varying environmental conditions for your specific application scenario.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control solutions. The series includes various frequencies and packages, catering to diverse timing needs in consumer and industrial electronics. Mercury Electronic Ind. Co., Ltd. provides these components as part of their broader portfolio of crystals, TCXOs, and VCXOs.
Replacement Considerations
Direct substitutes include other 49.248 MHz LVCMOS oscillators in 4-SMD No Lead packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as current consumption and frequency stability before swapping. Alternative models from different manufacturers may require layout adjustments if package dimensions differ.
