(Hong Kong)
Product Summary
The MC33993DWB is a Multiple Switch Detection Interface 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 MC33993DWB 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 pin for the MCU to read.
Parametrics
MC33993DWB absolute maximum ratings: (1)VDD Supply Voltage: -0.3 to 7.0 VDC; (2)CS, SI, SO, SCLK, INT, AMUX: -0.3 to 7.0 VDC; (3)WAKE : -0.3 to 40 VDC; (4)VPWR Supply Voltage: -0.3 to 50 VDC; (5)Switch Input Voltage Range: -14 to 40 VDC; (6)Frequency of SPI Operation (VDD = 5.0 V): 6.0 MHz; (7)Storage Temperature, TSTG: -55 to 150℃; (8)Operating Case Temperature, TC: -40 to 125℃; (9)Operating Junction Temperature, TJ: -40 to 150℃; (10)Power Dissipation (TA = 25℃), PD: 1.7 W.
Features
MC33993DWB features: (1)Designed to Operate 5.5 V ≤ VPWR ≤ 26 V; (2)Switch Input Voltage Range -14 V to VPWR, 40 V Max; (3)Interfaces Directly to Microprocessor Using 3.3 V/5.0 V SPI Protocol; (4)Selectable Wake-Up on Change of State; (5)Selectable Wetting Current (16 mA or 2.0 mA); (6)8 Programmable Inputs (Switches to Battery or Ground); (7)14 Switch-to-Ground Inputs ; (8)VPWR Standby Current 100 μA Typical, VDD Standby Current 20 μA Typical; (9)Active Interrupt (INT) on Change-of-Switch State.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||
|---|---|---|---|---|---|---|---|---|---|---|
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 MC33993DWB |
Freescale Semiconductor |
Interface - Specialized MSDI |
Data Sheet |
Negotiable |
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MC33993DWBR2 |
Freescale Semiconductor |
Interface - Specialized MSDI |
Data Sheet |
Negotiable |
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