Integrated Circuits

Integrated Circuit (IC)

• Semiconductor Devices• Circuit inside a chip—lots of transistors inside• Same Package, Different functions

Integrated Circuit

• All Integrated circuits have Datasheets

• Information: what it does, pin out diagram, electrical characteristics, heat dissipation info, physical dimensions

DIP

• DIP = Dual Inline PackageWhat it is

Pin 1 indicator

Notch indicating front of DIP

Dual Inline Package—how to read

555 Timer

• Very popular• Generate pulses• Few ways to hook up– Astable (square wave)– Monostable (one pulse

when triggered)– Bistable(simple memory, can

be set and reset)– Schmitt Trigger (inverting

buffer)

555 Astable

• Produces a square wave

555 Monostable

• Produces one pulse when triggered

555 Bistable

555 Schmitt Trigger

4017 Decade Counter

4017 Decade Counter

• Counter “Counts” by keeping track of how many pulses the input has and turning on corresponding outputs

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