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Product Detailed Parameters
- Description：12.688375 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：12.688375 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 18QHTF21-12.688375-PD is a quartz crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 12.688375 MHz with an LVCMOS output logic level. The device functions on a 1.8V supply voltage and features a power-down capability for standby mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component is designed for surface-mount technology applications requiring precise timing signals.
Feature Summary
- Supports low voltage operation at 1.8V
- Includes power-down functionality for energy efficiency
- Utilizes LVCMOS output logic for digital interfacing
Applications
- Portable electronic devices
- Compact embedded systems
- Digital signal processing circuits
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable within the specified operating range to ensure consistent performance. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions for proper assembly.
Selection Notes
Select this component when a small form factor and low power consumption are critical. The 1.8V operation makes it suitable for battery-powered applications. Consider the LVCMOS interface compatibility with your microcontroller or FPGA. Verify that the 12.688375 MHz frequency aligns with your system clock requirements.
Part Context
This part belongs to the Mercury Electronics XO series, which specializes in surface-mount oscillators. The 'PD' suffix indicates the inclusion of a power-down pin or feature. The 18QHTF21 series is designed for high reliability in consumer electronics and industrial applications where space constraints are significant.
Replacement Considerations
Check datasheets for compatible parts from other manufacturers offering similar 1.8V LVCMOS oscillators in 2.0x1.6mm packages. Ensure frequency stability and phase noise specifications meet or exceed the original requirements for seamless integration.
