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Product Detailed Parameters
- Description：8.4 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：8.4 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)：21mA
- 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 18QHTF21-8.400-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 8.4 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage for operation. 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 suitable for surface-mount assembly. It is designed for timing applications requiring precise clock signals.
Feature Summary
- LVCMOS output logic compatibility
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- General purpose clock signal generation
- Digital circuit timing reference
- Embedded system clock sources
Procurement Notes
Verify the specific operating temperature range and load capacitance requirements against your design specifications before procurement. Ensure the 1.8V supply rail stability meets the oscillator's jitter and phase noise requirements. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.
Selection Notes
Select this component when a low-voltage 1.8V supply is available and LVCMOS interface compatibility is required. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Consider the 8.4 MHz frequency point and package size constraints relative to other available frequencies in the 18QHTF21 series.
Part Context
This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronic. The series offers various frequencies and supply voltages. The suffix OE typically indicates specific packaging or tape-and-reel configuration details as per manufacturer standards. It is part of a broader lineup including TCXOs and VCXOs for different precision needs.
Replacement Considerations
Direct replacements must match the 8.4 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as jitter and phase noise. Consult the manufacturer's cross-reference list for approved alternatives.
