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Home > Discrete Semiconductors > Logic ICs > Flip Flops > Texas Instruments 74LS259B Octal Addressable Latch 4.75V-5.25V SIPO SOIC-16

Texas Instruments 74LS259B Octal Addressable Latch 4.75V-5.25V SIPO SOIC-16

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Texas Instruments 74LS259B Octal addressable latches 16-SOIC 0 to 70

Texas Instruments 74LS259B Octal Addressable Latch 4.75V-5.25V SIPO SOIC-16

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Texas Instruments 74LS259B / SN74LS259B Octal Addressable Latch Decoder, Non-Inverting, 4.75 -> 5.25 V, 16-Pin PDIP

These 8-bit addressable latches 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 are selectable by controlling the clear (CLR\) and enable (G\) inputs as enumerated in the function table. In the addressable-latch mode, data at the data-in terminal is written into the addressed latch. The addressed latch will follow 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, enable G\ should be held high (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode, the addressed output will follow 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 SN54259 and SN54LS259B are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74259 and SN74LS259B are characterized for operation from 0°C to 70°C.



Specifications
Operating Temperature Range(C) 0 to 70
3-State Output No
Approx. Price (US$) 0.36 | 1ku
Bits(#) 8
Technology Family LS
Rating Catalog
Schmitt Trigger No
tpd @ Nom Voltage(Max)(ns) 30
VCC(Max)(V) 5.25
F @ Nom Voltage(Max)(Mhz) 35
Voltage(Nom)(V) 5
Package Group PDIP,SO,SOIC
Output Drive (IOL/IOH)(Max)(mA) 8/-0.4
VCC(Min)(V) 4.75
ICC @ Nom Voltage(Max)(mA) 36

Additional Information

74LS259B
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