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CD54HC259

Features: • Buffered Inputs and Outputs• Four Operating Modes• Typical Propagation Delay of 15ns at VCC = 5V, CL = 15pF, TA = 25• Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 1...

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SeekIC No. : 004311663 Detail

CD54HC259: Features: • Buffered Inputs and Outputs• Four Operating Modes• Typical Propagation Delay of 15ns at VCC = 5V, CL = 15pF, TA = 25• Fanout (Over Temperature Range) - Standard O...

CD54HC259 Data Sheet

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Part Number:
CD54HC259
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Buffered Inputs and Outputs
• Four Operating Modes
• Typical Propagation Delay of 15ns at VCC = 5V, CL = 15pF, TA = 25
• Fanout (Over Temperature Range)
    - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
    - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55 to 125
• 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 1mA at VOL, VOH


Pinout

Connection Diagram


Specifications

DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . ...±20mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC or IGND . . . . . . . . . . . . . . . ..±50mA 


Description

The 'HC259 and 'HCT259 Addressable Latch features the low-power consumption associated with CMOS circuitry and has speeds comparable to low-power Schottky.

This CD54HC259 latches three active modes and one reset mode. When both the Latch Enable (LE) and Master Reset (MR) inputs are low (8-line Demultiplexer mode) the output of the addressed latch follows the Data input and all other outputs are forced low. When both MR and LE are high (Memory Mode), all outputs are isolated from the Data input, i.e., all CD54HC259 latches hold the last data presented before the LE transition from low to high. A condition of LE low and MR high (Addressable Latch mode) allows the addressed latch's output to follow the data input; all other latches are unaffected. The Reset mode (all outputs low) results when LE is high and MR is low.




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