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Product Detailed Parameters
- Description：10.4 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：10.4 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)：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 18QHTF21-10.400-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.4 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an active-low enable/disable control pin for power management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Integrates LVCMOS output interface for direct digital logic compatibility
- Includes hardware enable/disable functionality to reduce power consumption
- Utilizes a leadless surface-mount package for automated assembly
Applications
- Clock signal generation for microprocessors and FPGAs
- Timing reference for communication interfaces such as UART or SPI
- System clock sources for portable consumer electronics
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's jitter specifications. Ensure the PCB footprint matches the 2.0x1.6mm SMD land pattern to guarantee proper solder joint integrity during reflow processes.
Selection Notes
Select this component when a low-voltage 1.8V supply is available and space constraints require a 2.0x1.6mm footprint. Consider the LVCMOS output swing levels to ensure compatibility with downstream logic inputs. Evaluate the need for the enable pin feature if dynamic power saving is required in the application design.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor oscillators. The series typically offers various frequencies within the same physical package, allowing for design flexibility. The 'OE' suffix indicates the inclusion of the enable/disable control function, distinguishing it from standard continuous-output variants.
Replacement Considerations
Direct replacements must match the 10.4 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify that substitute parts support the enable/disable pin configuration if power management is critical to the system operation.
