within dac hierarchy 500 address decoder 585 decodes address 580 units 585 a 585 b and 585 c within address decoder address 580 to generate select signals 390 a 390 b and 390 c to select 1 st 2 nd and 3 rd hierarchy selection gates to complete the connection between the voltage divider node and dacout in accordance with the dac hierarchy of fig2 while unit 585 d recognizes and decodes fastpath addresses to generate fastpath select signals 590 d to operate fastpath select gates 570 and form a parallel conduction path for fastpath addresses for example dac hierarchy 500 has fastpath 575 a which connects voltage divider node 510 d to dacout in parallel with a series connection of selection gates 520 s 535 a and 550 a when voltage divider node 510 d is addressed in a similar manner fastpaths 575 b 575 w provide parallel connections to dacout when selected first hierarchy nodes 530 a 530 q each connect to a number represented by the ratio p q voltage divider nodes 510 to first hierarchy mux groups 525 a 525 q each comprise p q select gates 520 regardless of fastpaths 575 designed within dac hierarchy 500 fig6 details the workability of dac hierarchy 500 shown in fig5 a and 5b a prior art muxing structure in accordance with fig2 is shown by the red u201c dacoutold.