CD74HCT646E - Brand New Texas Instruments IC Chips

In Stock:150 ,Ready for Immediate Shipping
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In Stock: 150, Ready for Immediate Shipping
Category:IC Chips
Chipdatas Part No.:CD92-CD74HCT646E
Manufacturer Part No.:CD74HCT646E
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  • Description

    The CD74HCT646E is a 16-bit register file designed with simultaneous and independent read and write operations. It is organized as 4 words x 4 bits, with four data inputs for storing a 4-bit word. The write address inputs determine the location of the stored word in the register.

    Specifications and Features

    • Simultaneous and independent read and write operations
    • Expandable to 512 words of n-bits
    • Three-state outputs
    • Organized as 4 words x 4 bits wide
    • Buffered inputs
    • Typical read time of 16ns for 'HC670 VCC = 5V, CL = 15pF, TA = 25°C
    • Fanout (Over Temperature Range):
      • Standard outputs: 10 LSTTL loads
      • Bus driver outputs: 15 LSTTL loads
    • Wide operating temperature range: -55oC to 125oC
    • Balanced propagation delay and transition times
    • Significant power reduction compared to LSTTL logic ICs
    • HC Types:
      • 2V to 6V operation
      • High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
    • HCT Types:
      • 4.5V to 5.5V operation
      • Direct LSTTL input logic compatibility: VIL= 0.8V (Max), VIH = 2V (Min)
      • CMOS input compatibility: Il ≤ 1µA at VOL, VOH

    Application Scenarios

    The CD74HCT646E can be used in various applications that require simultaneous read and write operations, such as memory registers, data storage systems, and parallel processing units. Its wide operating temperature range makes it suitable for both industrial and automotive applications.


    • Simultaneous and independent read and write operations
    • Expandable to 512 words of n-bits
    • Wide operating temperature range
    • Significant power reduction compared to LSTTL logic ICs
    • Higher noise immunity compared to some other logic ICs
  • Similar parts: 430483 , Click to view
    Attributes Value
    Category IC Chips
    Manufacturer Texas Instruments
    Product Category IC Chips
    Mfr Harris Corporation
    Series 74HCT
    Package Bulk
    Product-Status Active
    Logic-Type Transceiver Non-Inverting
    Number-of-Elements 1
    Number-of-Bits-per-Element 8
    Input-Type -
    Output-Type 3-State
    Current-Output-High-Low 6mA 6mA
    Voltage-Supply 4.5V ~ 5.5V
    Operating-Temperature -55°C ~ 125°C (TA)
    Mounting-Type Through Hole
    Package-Case 24-DIP (0.300" 7.62mm)
    Supplier-Device-Package 24-DIP
    Base-Product-Number 74HCT646
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  • Shopping guide

    • - 30-day money-back return policy,
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Additional Information
  • Datasheet: Download CD74HCT646E
  • Chipdatas Part: CD92-CD74HCT646E
  • Warehouse: China, Hong Kong
  • Dispatch: Within 24 hours
  • Free Shipping: Yes
  • Prority Shipping: Yes, 3-5 days
  • Last Updated: 2023/12/11 10:54 +0800
    • Full Refund if you don't receive your order
    • Full or Partial Refund , If the item is not as described
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