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Product Detailed Parameters
- Description：9.844 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：9.844 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 18QHTF21-9.844-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 9.844 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 3.3V and features an Enable/Disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable control functionality
- Compact surface-mount package design
Applications
- General clock signal generation
- Digital circuit timing reference
- Embedded system clock sources
Procurement Notes
Verify the specific operating voltage and load capacitance requirements against the target circuit design before procurement. Confirm that the 3.3V supply specification aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the part number suffix to confirm the exact frequency tolerance and temperature range specifications required for the application environment.
Selection Notes
Select this component when a low-profile, standard frequency oscillator is required for digital logic interfaces. The LVCMOS output is suitable for direct connection to microcontrollers or FPGAs without additional level shifting. Consider the 3.3V supply requirement and the enable pin utility for power management strategies during system design evaluation.
Part Context
This model belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a consistent 2.0x1.6mm form factor. The -OE suffix typically denotes specific packaging or tape-and-reel configuration details as defined by the manufacturer's ordering nomenclature.
Replacement Considerations
Direct substitutes include other 9.844 MHz LVCMOS oscillators in 4-SMD packages with compatible 3.3V operation. Verify pin-to-pin compatibility and electrical parameter equivalence before substitution.
