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Product Detailed Parameters
- Description：7.3704 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：7.3704 MHz
- Function：Standby (Power Down)
- 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 18QHTF21-7.3704-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 7.3704 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and supports a standby or power-down mode for energy management. It is housed in a compact 4-SMD, no-lead package designed for surface-mount assembly.
Feature Summary
- Supports low-voltage operation at 1.8V
- Includes standby functionality for power reduction
- Utilizes LVCMOS output interface
Applications
- General-purpose clock generation
- Embedded system timing references
- Portable electronic devices requiring low power
Procurement Notes
Verify the specific frequency tolerance and stability specifications against the official datasheet before integration. Confirm that the 1.8V supply requirement aligns with your system design. Ensure the 4-SMD no-lead package dimensions fit within your PCB layout constraints. Cross-reference the manufacturer part number to avoid confusion with similar models in the series.
Selection Notes
Select this component when a precise 7.3704 MHz reference is required for digital circuits. The LVCMOS output is suitable for standard logic interfaces. Consider the 1.8V operating voltage if your system utilizes low-power rails. The standby feature offers flexibility for battery-operated applications where power conservation is critical during idle periods.
Part Context
This model belongs to the 18QHTF21 series of oscillators from Mercury Electronics. The series typically includes various frequencies such as 15.7 MHz and 51.2 MHz, all sharing similar package types and voltage requirements. The 'PD' suffix likely indicates the power-down capability common across this product line.
Replacement Considerations
Direct substitutes include other variants within the 18QHTF21 series, such as the 18QHTF21-15.700-PD or 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application. Verify pin compatibility and electrical characteristics before swapping.
