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Product Detailed Parameters
- Description：74.28 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：74.28 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 18QHTF21-74.280-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 74.28 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- Generates a stable 74.28 MHz clock signal using LVCMOS logic levels
- Operates with a 1.8V supply voltage for low-power integration
- Includes hardware enable and disable functionality for active power control
Applications
- Digital signal processing systems requiring precise timing references
- Communication equipment utilizing standard clock interfaces
- Embedded systems with space-constrained surface-mount layouts
Procurement Notes
Verify the specific suffix 'OE' against the manufacturer's datasheet to confirm the enable/disable feature set. Ensure the 1.8V supply requirement aligns with the target system's voltage rails. Confirm that the 4-SMD no-lead package footprint matches the PCB design guidelines before finalizing procurement orders.
Selection Notes
Select this component when a 74.28 MHz frequency is required alongside LVCMOS compatibility. The enable/disable feature makes it suitable for systems needing dynamic power management. Consider the 1.8V operating voltage constraint during circuit design to ensure proper signal integrity and power delivery.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various frequencies and packages, with this specific model offering a standard XO configuration. Mercury Electronics has a long history in manufacturing crystal oscillators and related components.
Replacement Considerations
Check the 18QHTF21-74.280-PD variant, which shares the same frequency and package but may differ in the standby or enable mechanism. Verify electrical parameters and pinout compatibility before substituting any other oscillator models from different manufacturers.
