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Product Detailed Parameters
- Description：79.94464 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：79.94464 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)：26mA
- 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 18QHTF21-79.94464-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 79.94464 MHz and utilizes LVCMOS output logic. The device is designed for low voltage operation with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable functionality for power management
- Operates at a nominal supply voltage of 1.8V
Applications
- Digital signal processing systems
- Communication equipment requiring precise timing
- Embedded control circuits
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current documentation to ensure the correct voltage and package variant. Confirm that the LVCMOS output type matches the target circuit requirements. Check for any recent updates to the datasheet regarding mechanical dimensions or thermal characteristics before finalizing the procurement order.
Selection Notes
Select this component when a stable 79.94464 MHz clock source is required for 1.8V logic families. Ensure the design accommodates the 4-SMD no-lead footprint. Consider the enable pin requirement if dynamic power saving is necessary. Verify that the operating temperature range meets the environmental conditions of the intended application.
Part Context
This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers standard frequency options with low voltage operation. The '18' prefix indicates the 1.8V supply variant, distinguishing it from other voltage versions within the same product family.
Replacement Considerations
Direct substitutes include the 25QHTF21-79.94464-OE, which shares the same frequency and package but operates at 2.5V. Ensure voltage level compatibility when swapping between these variants.
