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Product Detailed Parameters
- Description：IC FF D-TYPE SNGL 8BIT 20SOIC
- Series：74LVTH
- 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-SOIC
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Input Capacitance：4 pF
- Grade：-
- Qualification：-
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Overview
The Fairchild Semiconductor 74LVTH574WM is an octal D-type flip-flop featuring 3-state outputs, designed for low-voltage applications. It operates within a supply voltage range of 2.7V to 3.6V and supports data rates up to 150MHz. The device provides high drive capability with output currents of -32mA (high) and 64mA (low). It utilizes a 20-pin Wide SOIC package and functions across an industrial temperature range from -40°C to 85°C.
Feature Summary
- Octal D-type flip-flop architecture with positive-edge triggering
- 3-state outputs for effective bus isolation
- High drive strength supporting heavy capacitive loads
- Low voltage operation compatible with standard logic levels
Applications
- Parallel data storage in microprocessor systems
- I/O buffering for memory interfaces
- Clock distribution networks
- Bus transceiver input latching
Procurement Notes
Verify the specific manufacturer origin, as onsemi acquired Fairchild's semiconductor business. Confirm the exact suffix 'WM' matches the required wide-body SOIC-20 package dimensions. Check current lifecycle status, as many legacy Fairchild parts are now managed by onsemi or designated obsolete. Ensure RoHS compliance documentation aligns with current regional regulations.
Selection Notes
Select this component when an octal latch with strong drive capability is required for 3.3V logic systems. Compare propagation delay specifications against system timing requirements. Evaluate the wide SOIC package suitability for PCB layout constraints versus TSSOP alternatives. Consider power consumption characteristics relative to other LVT series devices.
Part Context
This part belongs to the LVTH series, optimized for low-voltage CMOS technologies. It serves as a digital storage element within broader logic families. The device complements other bus drivers and transceivers in complex digital designs requiring reliable data retention and high-speed switching capabilities.
Replacement Considerations
Direct substitutes include SN74LVTH574PW and SN74LVTH574PWR from Texas Instruments. Verify pin compatibility and electrical parameters before substitution. Alternative packages may require adapter solutions if physical footprint constraints exist.
