SN54LS259

SN54/74LS259 8-BIT ADDRESSABLE LATCH The 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. 8-BIT ADDRESSABLE LATCH LOW POWER SCHOTTKY 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) 16 J SUFFIX CERAMIC CASE 620-09 1 VCC 16 C 15 E 14 D 13 Q7 12 Q6 11 Q5 10 Q4 9 16 1 N SUFFIX PLASTIC CASE 648-08 1 Ao 2 A1 3 A2 4 Q0 5 Q1 6 Q2 7 Q3 8 GND 16 1 D SUFFIX SOIC CASE 751B-03 PIN NAMES LOADING (Note a) HIGH LOW 0.25 U.L. 0.25 U.L. 0.5 U.L. 0.25 U.L. 5 (2.5) U.L. A0, A1, A2 D E C Q0 to Q7 Address lnputs Data Input Enable (Active LOW) Input Clear (Active LOW) input Parallel Latch Outputs (Note b) 0.5 U.L. 0.5 U.L. 1.0 U.L. 0.5 U.L. 10 U.L. ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC 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 Symbol...