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Part No SN74ALS564BDW
Manufacturer Texas Instruments
Catalog Logic - Flip Flops

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Products specifications

Categories Integrated Circuits
Manufacturer Texas Instruments
Packaging Tube
Function Standard
Type D-Type
Output Type Tri-State, Inverted
Number of Elements 1
Number of Bits per Element 8
Clock Frequency 30MHz
Max Propagation Delay at V, Max CL 14ns at 5V, 50pF
Trigger Type Positive Edge
Current - Output High, Low 2.6mA, 24mA
Supply Voltage (V) 4.5V ~ 5.5V
Current - Quiescent (Iq) 18mA
Temperature Range - Operating 0°C ~ 70°C
Mounting Style SMD
Manufacturer Package 20-SOIC
Family Part Number 74ALS564
Manufacturer Pack Quantity 25
MSL Level 1 (Unlimited)
Win Source Part Number 1253792-SN74ALS564BDW
Manufacturer Homepage
Popularity Medium
Fake Threat In the Open Market 50 pct.
Supply and Demand Status Limited


The SN74ALS564BDW is a high-performance integrated circuit designed and manufactured by Texas Instruments, a leader in semiconductor solutions. This particular device is an octal D-type flip-flop with a clear function, belonging to the 'ALS' series known for their advanced low-power Schottky technology. It is ideal for a wide range of applications that require the capture and control of data within digital systems.

Key Features:

  • Edge-Triggered D-Type Flip-Flops: The SN74ALS564BDW consists of eight edge-triggered flip-flops, which are designed to store data by operating on the edge of a clock signal, providing precise control over data flow.
  • Direct Clear Function: Each flip-flop features a direct clear input, allowing for the immediate resetting of the flip-flop’s output to a low state, which is critical for initialization and synchronization processes within digital circuits.
  • Wide Operating Voltage Range: The device supports a wide range of operating voltages from 4.5V to 5.5V, making it versatile for use in various logic-level environments.
  • High-Current Outputs: The SN74ALS564BDW is capable of driving high-current loads, making it suitable for interfacing with other logic families or driving heavier loads within a circuit.
  • 20-Pin Wide Body SOIC Package: The device is packaged in a 20-pin wide body small-outline integrated circuit (SOIC) package, denoted by the 'DW' suffix, which is suitable for surface mounting and space-saving on printed circuit boards (PCBs).


The SN74ALS564BDW is used in a variety of digital applications, including:

  • Buffer/Storage Registers
  • Shift Registers
  • Data Storage
  • Pattern Generators
  • System Control Logic

Quality and Reliability:

As with all Texas Instruments products, the SN74ALS564BDW is manufactured to the highest quality standards, ensuring reliability and performance in even the most demanding applications. The device is also supported by Texas Instruments' extensive technical documentation and application notes, which provide valuable guidance for designers and engineers.

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