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Product Detailed Parameters
- Description：10.949297 M XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：10.949297 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)：22mA
- 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 18QHTF21-10.949297-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 10.949297 MHz with LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated standby mode for power management
- Compact surface-mount package design
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 the target application's datasheet specifications. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when a precise 10.949297 MHz clock source is required with low power consumption capabilities. The integrated standby feature makes it suitable for battery-operated devices or systems requiring active power management. Ensure the operating temperature range meets the environmental conditions of the intended deployment scenario.
Part Context
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and supply voltages, including 2.5V variants. The 'PD' suffix indicates the inclusion of a power-down pin functionality, distinguishing it from standard continuous-operation models within the same physical package family.
Replacement Considerations
Direct substitutes include other 10.949297 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation and standby pins. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in high-speed digital applications.
