SN74HC259

Features: · 8-Bit Parallel-Out Storage Register Performs Serial-to-Parallel Conversion With Storage· Asynchronous Parallel Clear· Active-High Decoder· Enable Input Simplifies Expansion· Expandable for n-Bit Applications· Four Distinct Functional Modes· Package Options Include Plastic Small-Outline...

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SN74HC259 Picture
SeekIC No. : 004498928 Detail

SN74HC259: Features: · 8-Bit Parallel-Out Storage Register Performs Serial-to-Parallel Conversion With Storage· Asynchronous Parallel Clear· Active-High Decoder· Enable Input Simplifies Expansion· Expandable f...

floor Price/Ceiling Price

Part Number:
SN74HC259
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/10/30

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Product Details

Description



Features:

· 8-Bit Parallel-Out Storage Register Performs Serial-to-Parallel Conversion With Storage
· Asynchronous Parallel Clear
· Active-High Decoder
· Enable Input Simplifies Expansion
· Expandable for n-Bit Applications
· Four Distinct Functional Modes
· Package Options Include Plastic Small-Outline (D), Thin Shrink Small-Outline (PW), and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs



Pinout

  Connection Diagram


Specifications

Supply voltage range, VCC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . .±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1)  . . . . . . . . . . . . . . . .±20 mA
Continuous output current, IO (VO = 0 to VCC). . . . . . . . . . . . . . . . . . . . . . . . .. . . ±25 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Package thermal impedance, JA (see Note 2): D package  . . . . . . . . . . . . . . . . .113°C/W
                                                                           N package . . . . . . . . . . . . . . . .. . 78°C/W
                                                                           PW package . . . . . . . . . . . . . . . .149°C/W
Storage temperature range, Tstg  . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. .65°C to 150°C



Description

These 8-bit addressable latches of the SN74HC259 are designed for general-purpose storage applications in digital systems. Specific uses include working registers, serial-holding registers, and active-high decoders or demultiplexers. They are multifunctional devices capable of storing single-line data in eight addressable latches, and being a 1-of-8 decoder or demultiplexer with active-high outputs.

Four distinct modes of operation of the SN74HC259 are selectable by controlling the clear (CLR) and enable (G) inputs. In the addressable-latch mode, data at the data-in terminal is written into the addressed latch. The addressed latch follows the data input with all unaddressed latches remaining in their previous states. In the memory mode, all latches remain in their previous states and are unaffected by the data or address inputs. To eliminate the possibility of entering erroneous data in the latches, G should be held high (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode, the addressed output follows the level of the D input with all other outputs low. In the clear mode, all outputs are low and unaffected by the address and data inputs.

The SN74HC259 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74HC259 is characterized for operation from 40°C to 85°C.




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