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Product Detailed Parameters
- Description：74.813422 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：74.813422 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)：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 18QHTF21-74.813422-PD is a 74.813422 MHz crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates on a 1.8V supply voltage and utilizes LVCMOS output logic. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It features a Standby function for power management and is supplied in a Strip packaging format.
Feature Summary
- Standard LVCMOS output logic for digital interface compatibility
- Integrated standby mode to reduce power consumption during idle periods
- Compact surface-mount design suitable for space-constrained PCB layouts
Applications
- Precision timing applications in electronic devices
- Clock signal generation for digital circuits
- Consumer electronics requiring low-power oscillators
Procurement Notes
Verify the specific ordering suffix '-PD' corresponds to the required strip packaging configuration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 2.0x1.6mm footprint matches the designed PCB land pattern. Check for any specific handling requirements associated with the no-lead SMD package type.
Selection Notes
Select this component when a precise 74.813422 MHz frequency is required with low voltage operation. The LVCMOS output is suitable for standard digital logic families. Consider the small form factor for dense circuit designs. Verify thermal performance within the specified operating temperature range for the intended environment.
Part Context
This part belongs to the Mercury Electronics XO series, which includes various frequencies and packages. The '18QHTF21' prefix indicates the specific series and package style. The manufacturer is a Taiwan-based supplier specializing in quartz crystals and oscillators since 1973. This model represents a standard non-spread spectrum oscillator variant.
Replacement Considerations
The 18QHTF21-74.813422-OE from Mercury United Electronics, Inc. is a listed substitute with identical frequency and logic specifications. Verify pinout and electrical parameters before substitution.
