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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20SOP
- Series：74LVT
- Mfr：Fairchild Semiconductor
- Package：Tube
- Function：Standard
- Type：D-Type
- Output Type：Tri-State, Non-Inverted
- Number of Elements：1
- Number of Bits per Element：8
- Clock Frequency：150 MHz
- Max Propagation Delay @ V, Max CL：4.6ns @ 3.3V, 50pF
- Trigger Type：Positive Edge
- Current - Output High, Low：32mA, 64mA
- Voltage - Supply：2.7V ~ 3.6V
- Current - Quiescent (Iq)：190 µA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：20-SOP
- Package / Case：20-SOIC (0.209", 5.30mm Width)
- Input Capacitance：4 pF
- Grade：-
- Qualification：-
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Overview
The Fairchild Semiconductor 74LVT574SJ is a low voltage octal D-type flip-flop featuring three-state outputs. It operates within a supply voltage range of 2.7V to 3.6V and supports a maximum clock frequency of 75 MHz. The device exhibits a maximum propagation delay of 16.7ns at 3.3V with a 50pF load. Quiescent current is specified at 190 µA, with an input capacitance of 4 pF. It is housed in a 20-SOP package and functions across a temperature range of -40°C to 85°C.
Feature Summary
- Octal D-type flip-flop architecture with positive edge triggering for data storage
- Three-state outputs designed for efficient bus-organized system applications
- Low voltage operation compatible with standard 3.3V logic levels
- Surface mount packaging suitable for automated assembly processes
Applications
- Bus-oriented digital systems requiring parallel data latching
- Memory interface circuits for address or data storage
- Register arrays in microcontroller peripheral interfaces
- Clock domain crossing synchronization elements
Procurement Notes
Verify component authenticity through authorized distributors due to discontinuation status. Confirm package integrity and pin alignment against the 20-SOP specification. Check manufacturing date codes for age-related reliability concerns. Ensure replacement parts match electrical characteristics if sourcing alternatives from other manufacturers.
Selection Notes
Select this component for designs requiring eight-bit parallel data retention with tri-state control. Consider the 2.7V to 3.6V operating window for power compatibility. Evaluate the 75 MHz clock limit against system timing requirements. Assess thermal performance within the specified industrial temperature range for environmental stability.
Part Context
This part belongs to the LVT series of low-voltage logic devices, bridging legacy TTL functionality with modern CMOS efficiency. It serves as a foundational building block for sequential logic circuits. The SJ suffix indicates specific packaging and tape-and-reel configuration options available during production.
Replacement Considerations
Public confirmed substitute part numbers include SN74LV574ADW and SN74LV574ADWR from Texas Instruments. These alternatives offer similar logical functionality and pinout compatibility for direct board-level substitution.
