A no-trimming SLIC two-chip set with coin telephone signaling facilities. - Masao Akata; Yuichiro Nagataki; Kunihiro Koyabu; Kanji Mukai; Shinji Yoshida; Shegehi Morisaki; Masahiro Eda; Isamu Ueki; Toru Matsui (IEEE J. Solid State Circuits, 1990)