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Product Detailed Parameters
- Description：59.648 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：59.648 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)：24mA
- 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 18QHTF21-59.648-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 59.648 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a Standby (Power Down) function for enable/disable control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Supports Low EMI LVCMOS output logic for signal integrity
- Includes standby mode for power management via enable/disable pin
- Utilizes a small form factor surface-mount package
Applications
- General clock generation in embedded systems
- Data communication interfaces requiring precise timing
- Portable electronic devices with power constraints
Procurement Notes
Verify the specific suffix 'PD' confirms the presence of the Standby (Power Down) functionality as distinct from non-pd variants. Ensure the 1.8V supply requirement aligns with the target system's voltage rails. Confirm the 4-SMD no-lead package footprint matches the PCB layout design specifications before finalizing procurement orders.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside active power-down capabilities. The 2.0x1.6mm size is suitable for space-constrained designs. Compare against OE suffix versions if standby functionality is not needed, ensuring the correct electrical interface and package type are chosen for the application.
Part Context
This part belongs to the 18QHTF21 series of quartz crystal oscillators produced by Mercury Electronic Ind. Co. Ltd. The manufacturer is a specialized producer of frequency control products, including crystals and oscillators, with a history dating back several decades in Taiwan. This series typically offers standard performance characteristics for general-purpose timing applications.
Replacement Considerations
The 18QHTF21-59.648-OE is a related variant within the same series. However, the OE suffix typically denotes a different operational mode or feature set compared to the PD (Power Down) suffix. Verify that the absence of standby functionality in the OE version does not impact the system's power management requirements before considering it a direct substitute.
