The IDT 54FCT573T is an octal transparent latch with 3-state outputs and is intended for bus oriented applications. The flip-flops appear transparent to the data when Latch Enable (LE) is high. When LE is low, the data that meets the set-up time is latched. The 54FCT573T operates at -55C to +125C. (For commercial version, see 74FCT573T)