Editing 4000-series integrated circuits (section)

==Design considerations==
The 4000 series facilitates simpler [[Electronic circuit|circuit]] design through relatively low [[Electric power|power]] consumption, a wide range of supply [[voltage]]s, and vastly increased [[fanout|load-driving capability (fanout)]] compared to [[Transistor–transistor logic|TTL]]. This makes the series ideal for use in prototyping [[Large Scale Integration#LSI|LSI]] designs. While [[Transistor-transistor logic|TTL]] ICs are similarly [[Modular design|modular]], these usually lack the symmetrical drive strength of CMOS and may therefore require more consideration of the loads applied on its outputs.
Just like with TTL, [[Buffer amplifier|buffered]] models can drive higher electrical current (mainly available for I/O-devices like octal latches and three-state drivers) but have a slightly higher risk of introducing [[Parasitic oscillation|ringing]] (transient oscillations) unless correctly damped or terminated.<ref>[http://focus.ti.com/lit/an/scha004/scha004.pdf Understanding Buffered and Unbuffered CD4xxxB Series Device Characteristics. Texas Instruments]</ref><ref>Lancaster, Don. ''CMOS Cookbook'', {{ISBN|0-672-21398-2}}</ref> Many models contain a high level of integration, including fully integrated [[Seven-segment display|7-segment display counters]], [[Ring counter|walking ring counters]], and [[Adder (electronics)|full adders]].