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Product Detailed Parameters
- Description：8.334959 MHz XO 1.8V 2.0X1.6 PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：8.334959 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 18QHTF21-8.334959-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.334959 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down capability. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6mm.
Feature Summary
- Supports low-voltage operation at 1.8V
- Includes standby and power-down functionality
- Utilizes LVCMOS output logic for digital interfacing
Applications
- General clock signal generation
- Digital circuit timing references
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a precise 8.334959 MHz clock source is required for low-power applications. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the 1.8V operating voltage and power-down feature for systems requiring energy efficiency. Verify that the small form factor fits within the available board space constraints.
Part Context
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of power-down control capabilities, distinguishing it from standard continuous-operation variants within the same package family.
Replacement Considerations
Direct substitutes include other 18QHTF21 series parts with identical pinout and electrical characteristics but different frequencies, such as 18QHTF21-6.000-PD or 18QHTF21-51.200-PD, provided the frequency requirement can be adjusted.
