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Product Detailed Parameters
- Description：13.576 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：13.576 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)：22mA
- 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 18QHTF21-13.576-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.576 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Features LVCMOS output logic for digital interface compatibility
- Includes enable/disable functionality for power optimization
- Designed as a standard XO for precise clock signal generation
Applications
- Timing and clock signal generation in electronic devices
- Embedded systems requiring stable frequency references
- Consumer electronics utilizing low-voltage CMOS interfaces
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Ensure the 1.8V supply requirement aligns with the target circuit design. Confirm the 4-SMD no-lead package footprint matches the PCB layout to avoid assembly issues. Check for any specific handling requirements related to electrostatic discharge during installation.
Selection Notes
Select this component when a low-profile, surface-mount oscillator is required for 1.8V logic systems. The enable pin makes it suitable for battery-powered applications needing power management. Consider the 2.0x1.6mm size constraint for dense PCB layouts. Verify that the LVCMOS output swing meets the input requirements of the downstream clock receiver.
Part Context
This part belongs to the QuikXO series from Mercury Electronic, known for fast delivery and standard CMOS outputs. The '18' prefix indicates the 1.8V supply voltage, while 'QHTF21' denotes the specific package and performance class. This series targets applications demanding reliable timing solutions in compact form factors.
Replacement Considerations
Direct substitutes must match the 13.576 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility, specifically the enable/disable function placement. Cross-reference electrical specifications such as phase noise and jitter if critical for the application.
