The BU4S584 is an ultra-compact IC with one circuit of the inverter-type Schmitt trigger, BU4584B, built into an SMP package.

FEATUREs
1) Low current dissipation.
2) Super-mini mold package designed for surface
   mounting.
3) Wide range of operating power supply voltage.
4) Direct drive of 2 L-TTL inputs and 1 LS-TTL input.