MC33972DWBR2 ,Multiple Switch Detection Interface with Suppressed Wake-Upfunctional description of each terminal can be found in the System/Application Information section ..
MC33972TDWB , Multiple Switch Detection Interface with Suppressed Wake-Up
MC33981BPNA , Single High-Side Switch (4.0 mΩ), PWM clock up to 60kHz
MC33981BPNA , Single High-Side Switch (4.0 mΩ), PWM clock up to 60kHz
MC33982BPNA , Single Intelligent High-Current Self-Protected Silicon High-Side Switch (2.0 mohm)
MC33982PNA ,Single Intelligent High-Current Self-Protected Silicon High-Side SwitchFeatures• Single 2.0 mΩ Max High-Side Switch with Parallel Input or SPI Control • 6.0 V to 27 V Ope ..
MC74HC74AN ,Flip-Flop D-Type Type DualLOGIC DIAGRAMQ1 5 10 SET 2FUNCTION TABLEQ1 6 9 Q2Inputs OutputsGND 7 8 Q2Set Reset Clock Data Q QLH ..
MC74HC75D ,Dual 2-Bit Transparent LatchELECTRICAL CHARACTERISTICS (C = 50 pF, Input t = t = 6 ns)L r fÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
MC74HC75N ,Dual 2-Bit Transparent LatchMaximum Ratings are those values beyond which damage to the device may occur.ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
MC74HC75N ,Dual 2-Bit Transparent LatchMAXIMUM RATINGS*ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
MC74HC75N ,Dual 2-Bit Transparent LatchELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)Guaranteed LimitÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
MC74HC76N ,Dual JK Flip-Flop With Set and ResetMaximum Ratings are those values beyond which damage to the device may occur.ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
MC33972DWBR2
Multiple Switch Detection Interface with Suppressed Wake-Up
MOTOROLASEMICONDUCTOR TECHNICAL DATA
Document order number: MC33972
Rev 3.0, 12/2004Advance Information
Multiple Switch Detection Interface with Suppressed Wake-UpThe 33972 Multiple Switch Detection Interface with Suppressed Wake-Up is
designed to detect the closing and opening of up to 22 switch contacts. The
switch status, either open or closed, is transferred to the microprocessor unit
(MCU) through a serial peripheral interface (SPI). The device also features a
22-to-1 analog multiplexer for reading inputs as analog. The analog input
signal is buffered and provided on the AMUX output terminal for the MCU to
read.
The 33972 device has two modes of operation, Normal and Sleep. Normal
mode allows programming of the device and supplies switch contacts with
pullup or pulldown current as it monitors switch change of state. The Sleep
mode provides low quiescent current, which makes the 33972 ideal for
automotive and industrial products requiring low sleep state currents.
Features Designed to Operate 5.5 V ≤ VPWR ≤ 26V Switch Input Voltage Range -14 V to VPWR, 40 V Max Interfaces Directly to Microprocessor Using 3.3 V/5.0 V SPI Protocol Selectable Wake-Up on Change of State Selectable Wetting Current (16 mA or 2.0 mA) 8 Programmable Inputs (Switches to Battery or Ground) 14 Switch-to-Ground Inputs
•VPWR Standby Current 100 µA Typical, VDD Standby Current 20 µA
Typical Active Interrupt (INT) on Change-of-Switch State Pb-Free Packaging Designated by Suffix Code EW
Freescale Semiconductor, Inc.
