54LS173 Datasheet (National Semiconductor)

54LS173, 4-Bit D-Type Register

This four-bit register contains D-type flip-flops with totempole TRI-STATE outputs capable of driving highly capacitive or low-impedance loads The high-impedance state and increased high-logic-level drive provide these flip-flops with the capability of driving the bus lines in a bus-organized system

54LS173 Features

* Y TRI-STATE outputs interface directly with system bus Y Gated output control lines for enabling or disabling the outputs Y Fully independent clock eliminates restrictions for oper- ating in one of two modes Parallel load Do nothing (hold) Y For application as bus buffer registers Connection Diagra