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Product Detailed Parameters
- Description：78.0 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：78 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 18QHTF21-78.000-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 78.000 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, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- General clock signal generation in electronic circuits
- Timing reference for digital systems
- Embedded devices requiring stable frequency sources
Procurement Notes
Verify the specific suffix against official documentation to confirm electrical characteristics and pinout configuration. Ensure the selected variant matches the required operating temperature range and supply voltage specifications for the target application environment before finalizing procurement decisions.
Selection Notes
Select this component based on the requirement for a 78.000 MHz LVCMOS oscillator with 1.8V operation. Consider the physical dimensions of the 4-SMD package for PCB layout constraints. Confirm that the enable/disable feature aligns with system power management strategies and that the standard XO stability meets the design's jitter and accuracy requirements.
Part Context
This part belongs to the Mercury Electronics 18QHTF series of surface-mount oscillators. The series offers various frequencies and supply voltages, utilizing standard quartz crystal technology. The manufacturer specializes in frequency control products, providing components for timing applications across consumer and industrial electronics sectors.
Replacement Considerations
Cross-reference with other 18QHTF variants from Mercury Electronics or equivalent industry-standard 4-SMD LVCMOS oscillators. Verify frequency, voltage, and package compatibility when considering substitutes.
