Device description

AN2478

4/21

1

Device description

The STP08DP05 and STP16DP05 are monolithic, low voltage shift registers. The device

contains either an 8-bit (STP08DP05) or a 16-bit (STP16DP05) serial-in, parallel-out shift

register that feeds an 8-bit or 16-bit D-type storage register. Eight or sixteen regulated

currents are present in the output stage that provide 5-80 mA constant current to drive the

LEDs. The secondary device functionality (error detection) provides a status check of the

LEDs to detect any possible error during driving.

Figure 1.

Typical application of STP08DP05 and/or STP16DP05 devices