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Product Detailed Parameters
- Description：68.92 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：68.92 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)：26mA
- 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 18QHTF21-68.920-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 68.92 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable control for power optimization
- Compact 4-SMD no-lead surface mount package
Applications
- General clock signal generation in embedded systems
- Timing reference for digital communication interfaces
- Consumer electronics requiring precise frequency sources
Procurement Notes
Verify the specific ordering suffix and frequency tolerance requirements against the official datasheet before procurement. Ensure that the 1.8V supply voltage and LVCMOS output characteristics align with the target circuit design. Confirm package dimensions and pinout configuration to guarantee mechanical fit on the printed circuit board.
Selection Notes
Select this component when a low-voltage 1.8V supply is available and LVCMOS signaling is required. The small 2.0x1.6 mm footprint makes it suitable for space-constrained designs. Consider the enable/disable feature if power efficiency during idle states is a priority for the application.
Part Context
This part belongs to the 18QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The 18QHTF21 variant specifically denotes the 1.8V supply voltage family with LVCMOS outputs, distinguishing it from higher voltage or different output logic variants within the broader product line.
Replacement Considerations
Direct substitutes include other 68.92 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pin-to-pin compatibility and electrical specifications such as load capacitance and drive strength before substitution.
