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Product Detailed Parameters
- Description：IC FF D-TYPE QUAD 20SO
- Series：74LVQ
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Function：-
- Type：-
- Output Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：-
- Trigger Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Supplier Device Package：20-SO
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Input Capacitance：-
- Grade：-
- Qualification：-
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Overview
The STMicroelectronics 74LVQ574MTR is an octal D-type transparent latch featuring three-state outputs, housed in a 20-SOIC surface-mount package. It operates within a supply voltage range of 2V to 3.6V and supports a wide operating temperature range from -55°C to +125°C. The component belongs to the 74LVQ logic series and is designed for SMT installation. It is currently classified as obsolete or not recommended for new designs.
Feature Summary
- Octal D-type transparent latch architecture with eight independent data paths
- Three-state output capability for bus-oriented memory and line driving applications
- Wide operating temperature range suitable for demanding industrial environments
- RoHS compliant construction adhering to environmental safety standards
Applications
- Bus-oriented memory register implementations
- Line drivers for high-capacitance loads
- Industrial control system data latching
- Temperature-sensitive electronic instrumentation
Procurement Notes
This component is officially listed as obsolete by the manufacturer. Procurement requires verification of remaining stock availability through authorized distributors or surplus suppliers. Buyers must confirm that the specific lot meets RoHS requirements and assess the long-term viability of using end-of-life components for production. Alternative sourcing strategies should be evaluated to ensure supply chain continuity for existing maintenance or replacement needs.
Selection Notes
Engineers selecting this part should consider its low-voltage operation between 2V and 3.6V, which distinguishes it from standard 5V logic families. The 20-SOIC package offers a compact footprint for surface-mount assembly. Due to its obsolete status, design-in decisions should prioritize available replacements or verify if the component is still permitted for use in current manufacturing processes without violating supply constraints.
Part Context
The 74LVQ574MTR is part of STMicroelectronics' 74LVQ series, which focuses on low-voltage CMOS technology. This series provides performance benefits over older generations while maintaining compatibility with standard digital logic interfaces. The MTR suffix indicates the tape-and-reel packaging format intended for automated surface-mount placement equipment.
Replacement Considerations
Direct substitutes include SN74AC374DWR (Texas Instruments) and MC74AC574DWG (onsemi). These alternatives offer similar octal D-type latch functionality but may differ in electrical specifications such as supply voltage ranges and switching speeds. Verification of pinout compatibility and logical function equivalence is required before substitution.
