33880 Datasheet, PDF (14/25 Pages) Freescale Semiconductor, Inc – Configurable Octal Serial Switch with Serial Peripheral Interface I/O

FUNCTIONAL DESCRIPTION
LOGIC POWER (VDD)
The V_DD pin supplies logic power to the 33880 device and
is used for power-on reset (POR). To achieve low standby
current on V_PWR supply, power must be removed from the
V_DD pin. The device will be in reset with all drivers off when
V_DD is below 3.9 V_DC.
OPEN DRAIN OUTPUT (D1 – D8)
The D1 – D8 pins are the open drain outputs of the 33880.
For High-Side Drive configurations, the drain pins are
connected to battery supply. In Low-Side Drive
configurations, the drain pins are connected to the low side of
the load. All outputs may be configured individually as
desired. When Low-Side Drive is used, the 33880 limits the
positive transient for inductive loads to 45 V.
SOURCE OUTPUT (S1 – S8)
The S1 – S8 pins are the source outputs of the 33880. For
High-Side Drive configurations, the source pins are
connected directly to the load. In Low-Side Drive
configurations the source is connected to ground. All outputs
may be configured individually as desired. When High-Side
drive is used, the 33880 will limit the negative transient for
inductive loads to -20 V.
33880
14
Analog Integrated Circuit Device Data
Freescale Semiconductor