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Product Detailed Parameters
- Description：57.553667 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：57.553667 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 18QHTF21-57.553667-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 57.553667 MHz with an LVCMOS output signal. The device requires a supply voltage of 1.8V and features a standby or power-down mode for energy management. It is housed in a compact 4-SMD, no-lead package suitable for surface-mount applications.
Feature Summary
- Supports low-voltage operation at 1.8V
- Includes standby functionality for power reduction
- Utilizes LVCMOS output interface
Applications
- General-purpose digital systems requiring precise timing
- Embedded devices utilizing LVCMOS logic levels
- Portable electronics benefiting from low-power standby modes
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail is stable to maintain oscillator performance. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.
Selection Notes
Select this component when a fixed frequency of 57.553667 MHz is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint relative to your system's power domain. Evaluate the need for standby capabilities if power efficiency is a critical design parameter for the target application.
Part Context
This model belongs to the QHTF series of standard oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a small form factor. The 'P' suffix often indicates a specific packaging or tape-and-reel configuration, while the numeric code defines the exact frequency.
Replacement Considerations
Direct substitutes must match the 57.553667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications such as phase noise and jitter against the original datasheet to ensure functional equivalence.
