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SN54LS259-SN54LS259J-SN74LS259N
8-BIT ADDRESSABLE LATCH
8-BIT ADDRESSABLE LATCHThe SN54/74LS259 is a high-speed 8-Bit Addressable Latch designed for
general purpose storage applications in digital systems. It is a multifunctional
device capable of storing single line data in eight addressable latches, and
also a 1-of-8 decoder and demultiplexer with active HIGH outputs. The device
also incorporates an active LOW common Clear for resetting all latches, as
well as, an active LOW Enable. Serial-to-Parallel Conversion Eight Bits of Storage With Output of Each Bit Available Random (Addressable) Data Entry Active High Demultiplexing or Decoding Capability Easily Expandable Common Clear-- - - -- ---- --- -- -- -- -- ---
CONNECTION DIAGRAM DIP (TOP VIEW)
PIN NAMES LOADING (Note a)A0, A1, A2 Address lnputs Data Input Enable (Active LOW) Input Clear (Active LOW) input
Q0 to Q7 Parallel Latch Outputs (Note b)
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 μA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial
(74) Temperature Ranges.
GUARANTEED OPERATING RANGES
