l9947 STMicroelectronics, l9947 Datasheet - Page 5

• Manufacturer Part Number: l9947
• Description: Quad Half-bridge And Single High-side Driver
• Manufacturer: STMicroelectronics

APPLICATION CIRCUIT DIAGRAM
Fogure 1: Recommended Application Circuit.
FUNCTIONAL DESCRIPTION
The L9947 is a power interface circuit designed
for a multiplex system controlled by a parallel C
bus. The bus consists of four bidirectional data
wires D0 - D3 and three control wires read/write
(R/WN), mode (MODE) and chip select (CSN).
The device needs two supply voltages. The first
voltage supplies the half bridges, high side driver
and its driving part. The second one is a 5V stabi-
lized supply. The function of the device in the typi-
cal operating modes is described in the following
tables.
L9947
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