Setup & Hold TimeThe two timing windows around a clock edge, and the very different fixes each needs.Electrical EngineeringData must be stable for the setup time before aclock edge and for the hold time after it.T_clk ≥ t_cq + t_logic + t_setup + t_skew0.4 + 3.2 + 0.3 ns3.9 ns per cycleIgnoring skew.Maximum clockAbout 256 MHz1 ÷ 3.9 ns.Hold violationAdd path delayNot a slower clock.THE COMMON MISTAKESlowing the clock to fix a hold violationAdding delay to the offending short pathHold time depends on the fastest path after an edge, not on the clock period, soa slower clock changes nothing at all.Violating either window risks metastability. Synchronising anasynchronous input takes two flip-flops in series, never one.Setup & Hold Timelearnposters.com
Setup & Hold Time — printable engineering wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Setup & Hold Time poster

The rule, 3 worked examples, and the mistake everyone makes.

Violating either window risks metastability. Synchronising an asynchronous input takes two flip-flops in series, never one.

Questions about the Setup & Hold Time poster

What’s on the Setup & Hold Time poster?
The rule, 3 worked examples, and the mistake everyone makes. Data must be stable for the setup time before a clock edge and for the hold time afte…; T_clk ≥ t_cq + t_logic + t_setup + t_skew; 0.4 + 3.2 + 0.3 ns = 3.9 ns per cycle; Maximum clock = About 256 MHz; Hold violation = Add path delay; Common mistake: Slowing the clock to fix a hold violation → Adding delay to the offen…. Violating either window risks metastability. Synchronising an asynchronous input takes two flip-flops in series, never one.
Who is the Setup & Hold Time poster for?
Setup & Hold Time belongs to the Electrical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning digital logic can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Setup & Hold Time poster?
Use it to work out a maximum clock rate, or to read a static timing report. A wall chart earns its place by being glanceable from where the work is happening, so Setup & Hold Time belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
What other posters go with Setup & Hold Time?
Adders, Boolean Algebra and Counters & Registers sit alongside Setup & Hold Time in the Electrical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.AddersBoolean AlgebraCounters & Registers
Is the Setup & Hold Time poster free to download and print?
Yes. Setup & Hold Time downloads as a free PDF with no account, no email and no watermark, like everything else in the Electrical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Setup & Hold Time poster print at?
Setup & Hold Time is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Setup & Hold Time loses nothing.Printing guide

Related posters

Charts that sit alongside Setup & Hold Time on the same wall.

Browse every Electrical Engineering poster, or start from the full catalogue.