circuitry and methods allow selected memory word lines to be deactivated without using a global deactivate signal . all active wls do not therefore have to be deactivated simultaneously , which can cause voltage at a common deactivate node to rise undesirably . this undesirable voltage rise can adversely affect a system by , for example , inadvertently activating an inactive wl . the invention advantageously limits the voltage fluctuation at the common deactivate node .