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Freescale Semiconductor Technical Data
Document Number: MC33298 Rev. 5.0, 10/2006
Eight Output Switch with Serial Peripheral Interface I/O
The 33298 is a smart eight-output low-side power switch. It is a versatile device incorporating an 8-bit serial-in shift register to control an 8-bit parallel output latch providing control of eight independent "ON/OFF" output switches. Applications include the control of solenoids, relays, lamps, small DC-motors, and other moderate current loads (1.0 – 3.0 A). The 33298 interfaces directly with a microcontroller to control various inductive or incandescent loads. Input control is fast. Data rates are guaranteed to 2.0 MHz but the device is capable of rates to 8.5 MHz @ 25°C.