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Product Detailed Parameters
- Description：72.30417 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：72.30417 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 18QHTF21-72.30417-OE is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 72.30417 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is RoHS compliant and classified under MSL Level 1, indicating unlimited shelf life under standard conditions.
Feature Summary
- LVCMOS output logic for standard digital interface compatibility
- Integrated enable and disable control for power efficiency
- Compact surface-mount design suitable for space-constrained layouts
Applications
- General clock signal generation in embedded systems
- Timing reference for digital communication interfaces
- Power management circuits requiring precise timing
Procurement Notes
Verify the specific suffix 'OE' against official Mercury Electronics documentation to confirm it denotes the correct enable/disable variant and packaging type. Ensure that the 1.8V supply requirement aligns with the target system's voltage rails before integration. Cross-reference the 4-SMD No Lead footprint with the manufacturer's recommended land pattern to guarantee proper soldering reliability and mechanical stability during assembly processes.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS signaling levels. The enable/disable feature makes it suitable for battery-powered or power-sensitive applications where active standby modes are necessary. Consider the small 2.0x1.6mm package size if board real estate is limited. Verify that the operating temperature range meets the environmental specifications of the final application environment.
Part Context
This part belongs to the QHTF series of oscillators from Mercury Electronics, a pioneer in quartz crystal manufacturing since 1973. The series includes various differential and single-ended oscillators designed for high-frequency stability. The 18QHTF21 model specifically targets applications requiring precise timing in a miniature form factor, leveraging the company's long-standing expertise in Taiwan's quartz industry.
Replacement Considerations
Direct substitutes may include other 72.30417 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers, provided they match the 1.8V supply and pinout. Check datasheets for equivalent enable/disable functionality and similar dimensional constraints to ensure mechanical interchangeability without PCB redesign.
