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Product Detailed Parameters
- Description：1.18784 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：1.18784 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 18QHTF21-1.18784-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.18784 MHz and utilizes LVCMOS output logic levels. The device supports voltage control via an active-low enable/disable pin, allowing for power management in embedded systems. It is housed in a compact 4-SMD, no-lead package designed for surface-mount assembly. The component requires a supply voltage of 1.8V to function correctly within its specified operational parameters.
Feature Summary
- LVCMOS output interface for digital signal compatibility
- Active-low enable/disable pin for power control
- Compact 4-SMD no-lead surface-mount package
Applications
- Embedded system clock generation
- Microcontroller timing references
- Low-power portable electronics
Procurement Notes
Verify the specific suffix 'OE' corresponds to the enable/disable functionality and 1.8V supply requirement. Confirm the package dimensions match the 4-SMD no-lead specification during PCB layout. Ensure the design supports the required LVCMOS voltage levels. Cross-reference the manufacturer's latest datasheet for any updates on recommended soldering profiles or storage conditions prior to procurement.
Selection Notes
Select this component when a precise 1.18784 MHz reference is required with low power consumption capabilities. The 1.8V operating voltage makes it suitable for modern low-voltage digital circuits. The enable/disable feature allows for dynamic power management. Consider the small form factor for space-constrained designs. Verify that the load requirements of the target circuit align with the oscillator's specifications.
Part Context
This part belongs to the 18QHTF21 series of SMD oscillators from Mercury Electronic. The series includes various frequencies and voltage options, such as 3.3V variants and different package types like the PD suffix. The OE suffix specifically denotes the enable/disable capability. This family is designed for applications requiring stable clock signals in compact electronic devices.
Replacement Considerations
Direct substitutes may include other 1.18784 MHz LVCMOS oscillators in a 4-SMD no-lead package with 1.8V operation and enable pins. Verify electrical compatibility including output swing and current consumption. Check mechanical footprint alignment. Alternative parts from other manufacturers must meet the same frequency stability and package constraints.
