The Intersil ACTS573MS is a Radiation Hardened Octal Transparent Latch with an active low output enable. The outputs are transparent to the inputs when the latch enable (LE) is High. When the latch goes low the data is latched. The output enable controls the three-state outputs. When the output enable pins (OE) are high the output is in a high impedance state. The latch operation is independent of the state of output enable.