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Product Detailed Parameters
- Description：1.44 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：1.44 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 18QHTF21-1.440-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.44 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Integrates LVCMOS output interface for digital circuit compatibility
- Features active enable/disable pin for low-power operation control
- Utilizes surface-mount no-lead packaging for automated assembly
Applications
- General clock signal generation for embedded systems
- Timing reference for microcontroller units
- Synchronization source for digital communication interfaces
Procurement Notes
Verify the specific suffix 'OE' against the manufacturer's current datasheet to confirm the enable/disable functionality and voltage tolerance. Ensure the 1.8V supply requirement aligns with the target system design. Confirm the 4-SMD footprint matches the PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when a precise 1.44 MHz timing source is required with minimal board space. The integrated enable feature makes it suitable for battery-powered applications requiring power conservation. Verify that the LVCMOS output swing is compatible with the receiving input logic thresholds of the connected circuitry.
Part Context
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The 'OE' designation indicates specific operational characteristics regarding the enable pin, distinguishing it from standard continuous-output variants in the same physical package family.
Replacement Considerations
Direct replacements must match the 1.44 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm footprint. Verify that substitute parts also support the enable/disable control function if power management is critical to the application design.
