74HC131

HD74HC131 3-to-8-line Decoder/Demultiplexer with Edge-Triggered Address Registers Description The HD74HC131 is 3-to-8 linedecoder. It has Address select inputs (A,B,C) and D type register. Address select data store to D type registers, during the positive going transition of the clock pulse. Output control (G 1, G2) are independent of select input and CLK input, and when G1 is low or G2 = High, all outputs is high. Features High Speed Operation: tpd (CLK to Y) = 20 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 V to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) HD74HC131 Function Table Inputs Enable Select Outputs CLK G1 G2 C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 XX H X X X H H H H H H H H XL X X X X H H H H H H H H H L L L L L H H HH H HH H L L L H HL H HH H HH H L L H L HH L HH H HH H L L H H HH H L H H HH H L HL L HH H HL H HH H L HL H HH H HH L HH H L HH L HH H HH H L H H L HH H HH H HH H HL LH L XX X Outputs corresponding to stored address, L; all others H Pin Arrangement A1 B2 C3 CLK 4 G2 5 G1 6 Y7 7 GND 8 (Top view) 16 VCC 15 Y0 14 Y1 13 Y2 12 Y3 11 Y4 10 Y5 9 Y6 2 Logic Diagram A B C CLK G2 G1 HD74HC131 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 3 HD74HC131 DC Characteristics Item Input voltage Output voltage Input current Quiescent supply current Ta = 25°C Ta = –40 to +85°C Symbol VIH VCC (V) Min Typ Max Min 2.0 1.5 — — 1.5 4.5 3.15 — — 3.15 Ma...