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SN54LS256

Motorola Inc
Part Number SN54LS256
Manufacturer Motorola Inc
Description DUAL 4-BIT ADDRESSABLE LATCH
Published Apr 16, 2005
Detailed Description SN54/74LS256 DUAL 4-BIT ADDRESSABLE LATCH The SN54/74LS256 is a Dual 4-Bit Addressable Latch with common control inputs;...
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SN54LS256
SN54LS256

Overview
SN54/74LS256 DUAL 4-BIT ADDRESSABLE LATCH The SN54/74LS256 is a Dual 4-Bit Addressable Latch with common control inputs; these include two Address inputs (A0, A1), an active LOW Enable input (E) and an active LOW Clear input (CL).
Each latch has a Data input (D) and four outputs (Q0 – Q3).
When the Enable (E) is HIGH and the Clear input (CL) is LOW, all outputs (Q0 – Q3) are LOW.
Dual 4-channel demultiplexing occurs when the (CL) and E are both LOW.
When CL is HIGH and E is LOW, the selected output (Q0 – Q3), determined by the Address inputs, follows D.
When the E goes HIGH, the contents of the latch are stored.
When operating in the addressable latch mode (E = LOW, CL = HIGH), changing more...


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