DM8859
DM8859 is TTL compatible hex LED drivers manufactured by National Semiconductor.
description
The DM8859, DM8869 are TTL patible hex LED drivers with programmable current source outputs. The current sources are nominally set at 20 m A but may be adjusted by external resistors for any value between 0-50 m A. Each device contains six latches which may be set by input data terminals. A strobe mon to all six latches enables the data input terminals. The DM8859 current source outputs are switched on by entering a high level into the latches and the DM8869 current source outputs are switched on by entering a low level into the latches.
The devices are available in either a molded or cavity package. In order not to damage the devices there is a limit placed on the power dissipation allowable for each package type. This information is shown in the graph on the back page. o
3:
00 00 U1 CD o 3:
00 00 en
CD schematic diagram
INPUT DATA 1
OUTPUT t
MON STROBE
TO OTHER LATCHES...
