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Product Detailed Parameters
- Description：1.125 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：1.125 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 18QHTF21-1.125-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 1.125 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 active enable and disable functionality via control pin
- Utilizes LVCMOS output logic for digital interface compatibility
- Designed for low-voltage operation at 1.8V
Applications
- General clock signal generation in embedded systems
- Timing reference for microcontroller units
- Data communication interface synchronization
Procurement Notes
Verify the specific frequency suffix matches the required 1.125 MHz specification. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint is compatible with the PCB layout. Check for any specific operating temperature range requirements against the datasheet.
Selection Notes
Select this component when a precise 1.125 MHz timing source is required for low-power applications. The LVCMOS output ensures direct interfacing with standard digital logic families. The enable feature allows for power management strategies in battery-operated devices. Verify package compatibility before integration into the design.
Part Context
This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies and voltage options within a standardized 2.0x1.6mm footprint. It serves as a compact timing solution for modern electronic designs requiring reliable clock signals.
Replacement Considerations
Direct substitutes include other 1.125 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Cross-reference pinouts and electrical characteristics carefully. Verify thermal performance and frequency stability specifications match the original design requirements.
