MC33993DWB Datasheet

Multiple Switch Detection Interface

The 33993 Multiple Switch Detection Interface 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 pin for the MCU to read.

The 33993 device has two modes of operation, Sleep and Normal. The Sleep mode provides low quiescent current and enables the wake-up features of the device. Normal mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors switch change of state.
The 33993 is packaged in the 32-pin wide-body SOIC, reducing circuit board area. Low quiescent current makes the 33993 ideal for automotive and industrial products requiring low sleep state currents. The internal block diagram of the 33993 is illustrated in Figure 1, page 2.

Features

• Designed to Operate 5.5 V ≤ VPWR ≤ 26 V
• 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

Who we are?

is a professional electronic marketing corporation entirely engaged in the fields of semi-conductors and electronic components sale and service for clients over 10 years, specialize in selling the new and unused, original factory sealed packing electronic components. specialize in IC,diode,transistor,IGBT,DC-DC converter.....***has set up our own sales service conception and has already established strong partnerships with many famous manufacturers and we have more than 5,000,000 kinds of electronic components for your choices, always at your services !

FAQ
Q: Are you trading company or manufacturer?
A: We are original manufacturer OF Integrated Circuit Chip . We can do OEM/ODM business.
Q: How long is your delivery time?
A: Group buying delivery time: 30-60 days; General delivery time: 20 days.
Q: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery.
Q: How to buy your products?
A: You can buy the products from our company directly.Normally the procedure is sign the contract, payment by T/T,Contact the shipping company to delivery the goods to your country.
Q: What is the warranty ?
A: The free warranty is one year from the day of Commissioning qualified.If there is any fault for our products within the free warranty period, we will repair it and change the fault assembly for free.
6-TSSOP,

Quality

At the heart of jinshengweiye Elec. lies a commitment to total customer satisfaction with a secure quality system .We have professional testing facilities and experienced QC& engineering team.With advanced equipment and experienced industry experts, jinshengweiye Elec. is committed to fulfilling the needs of our customers .

Inventory

jinshengweiye Elecs stocks components are ready to be shipped.
Hard-to-find,obsolete and high demand integrated circuit & LCD display ect. can be found by us.

Team

Our sales representatives, customer service agents,quality inspectors and component engineers strive to

Price

We offer the most competitive price for you , purchasing cost.

Speed

jinshengweiye Electronics has established a well- developed logistics system and global logistics network which guarantees our service is very quick, convenient and efficient. attention to environmental protection.

Environmental

Our service is in strict compliance with global environmental regulations and standards. We resolve to fulfill social responsibility and pay

Logistics

Fast&safe delivery Cooperated international express with good discount components Perfessional expert/import documentation work Profdeeional safe packing materials for international transportation

Source

Powerful source offer you hard to find electronic CooperatedFranchised distributor Quick quotation&fast response to order with competitive price