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Product Detailed Parameters
- Description：9.909116 MHz XO 1.8V 2.0X1.6 OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：9.909116 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 18QHTF21-9.909116-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 9.909116 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 with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes Enable/Disable pin for power management control
- Utilizes quartz crystal technology for frequency stability
Applications
- General purpose clock signal generation
- Embedded system timing references
- Digital circuit synchronization
Procurement Notes
Verify the specific ordering suffix OE to confirm the enable/disable functionality and 1.8V supply requirement. Ensure the target application supports LVCMOS logic levels. Confirm the 4-SMD no-lead package footprint matches the PCB design. Check datasheet specifications for operating temperature range and load capacitance requirements before integration.
Selection Notes
Select this component when a precise 9.909116 MHz clock source is required with low voltage operation. The enable feature allows for dynamic power control in battery-operated devices. Consider the small form factor for space-constrained designs. Verify that the LVCMOS output swing meets the input requirements of the downstream logic components.
Part Context
This part belongs to the QHTF series of surface mount oscillators from Mercury Electronics. The series offers various frequencies and supply voltages. The '18' prefix indicates the 1.8V supply variant. The 'OE' suffix denotes the enable capability. This model is distinct from similar parts like the 25QHTF21 which uses a 2.5V supply.
Replacement Considerations
Direct substitutes include the 25QHTF21-9.909116-OE if the system voltage can be adjusted to 2.5V. Other Mercury Electronics models in the QHTF series may offer compatible footprints but require verification of voltage and logic level compatibility.
