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Digital logic (gates / K-map / truth table) templates

Physics — SR Latch (NAND)

Cross-coupled NAND gates form an active-low latch.

Template previewDigital logic (gates / K-map / truth table)
SR latch (NAND, active-low)SRG1G2QQnSequential — `G1` then `G2` then `G1` is a feedback loop, so this circuit has no truth table.This circuit has feedback: `G1` then `G2` then `G1`. That makes it SEQUENTIAL — its outputs depend on wha…

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title "SR latch (NAND, active-low)"
type gates
input S at (0,0)
input R at (0,4)
gate NAND G1 at (4,1)
gate NAND G2 at (4,3)
output Q at (8,1)
output Qn at (8,3)
wire S G1
wire R G2
wire G1 Q
wire G2 Qn
wire G1 G2
wire G2 G1