11596-21 (PnP ISA BIF) 80-pin PQFP R6761-21 RCVDL56ACF/SP 84-pin PLCC with parallel host interface R6761-22 RCVDL56ACFW/SP 84-pin PLCC with parallel host interface R6761-23 RCVDL56ACF 84-pin PLCC with parallel host interface R6761-25 RCVDL56ACF 84-pin PLCC with parallel host interface R6761-27 RCVDL56ACF/SVD 84-pin PLCC with parallel host interface R6762-21 RCVDL56ACF/SP 84-pin PLCC with serial DTE interface R6762-23 RCVDL56ACF