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Product Detailed Parameters
- Description：49.5133 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：49.5133 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 18QHTF21-49.5133-OE is a crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 49.5133 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an Enable/Disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Supports LVCMOS output logic for standard digital interfacing
- Includes hardware enable/disable functionality for power management
- Utilizes hermetic ceramic leadless SMD packaging for reliability
Applications
- Precision frequency generation in digital circuits
- Clock source for communication systems requiring 49.5133 MHz
- Embedded systems utilizing 1.8V logic levels
Procurement Notes
Verify the specific ordering suffix to ensure the correct package type and electrical characteristics match the design requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the LVCMOS output compatibility is suitable for the connected load. Check for any specific environmental or temperature range certifications required for the application.
Selection Notes
Select this component when a precise 49.5133 MHz clock signal is required in a low-voltage 1.8V environment. The choice is driven by the need for LVCMOS compatibility and the physical constraints of the 2.0x1.6mm surface-mount package. Consider the enable/disable feature if dynamic power control is necessary for the system architecture.
Part Context
This part belongs to the QHTF series from Mercury Electronic, which offers various hermetic ceramic leadless SMD packages. The series supports frequencies from 1.0 MHz to 200 MHz across different supply voltages. Mercury Electronic is a pioneer in the quartz crystal industry with decades of manufacturing experience.
Replacement Considerations
Direct substitutes include other variants within the QHTF series such as the 18QHTF21-49.5133-PD, provided the package style and electrical specifications are identical. Cross-referencing with other manufacturers requires matching the 49.5133 MHz frequency, 1.8V operation, and LVCMOS output type.
