Input/Output Functions - Component Selection Guide

Component Name	Features/Description
IBUF*, IBUF4, IBUF8, IBUF16	Input buffer
IOPAD*, IOPAD4, IOPAD8, IOPAD16	Input/output pad
IPAD*, IPAD4, IPAD8, IPAD16	Input pad
OBUF*, OBUF4, OBUF8, OBUF16	Output buffer
OBUFE*, OBUFE4, OBUFE8, OBUFE16	3-state output buffer with active-high enable
OBUFT*, OBUFT4, OBUFT8, OBUFT16	3-state output buffer with active-low enable
OPAD*, OPAD4, OPAD8, OPAD16	Output pad
UPAD*	Unbonded I/O pad