SN75189AD

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Receiver
Protocol:	RS232
Number of Drivers/Receivers:	0/4
Duplex:	--
Data Rate:	--
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	SN75189A

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SN75189AD Application Field and Working Principle

Introduction

The SN75189AD is a low-power, 3-state, logic circuit driver and receiver. It is a member of the Texas Instruments SN75189AD family. In addition to being a logic driver and receiver, it has an outstanding performance in automotive applications due to its special protection features. It also provides protection against electrostatic discharge (ESD). Its low-power operation ensures an efficient system design and eliminates the need for excessive heatsinks.

Application Field

The SN75189AD can be used in automotive applications such as engine control and anti-lock brake systems. It is also suitable for applications in other high temperature environments. Its unique ESD protection circuit prevents damage to the device during long term operation.The SN75189AD is also suitable for battery charging applications due to its low-power operation and low-voltage drop on the output. Its protection features such as thermal shutdown and overvoltage protection minimize the risk of component failure in high temperature environments. These features are invaluable in battery charging applications.

Working Principle

The SN75189AD is a logic circuit driver and receiver. Its operating voltage range is from 4.5V to 18V and it has a maximum output current of 15mA. Its low-power operation reduces the need for excessive heatsinks and allows the device to operate within its specified temperature range.The SN75189AD has two input pins, "IN" and "EN," and two output pins, "OUT" and "EN." The input pins can be used to select the logic state at the output pins. "IN" is the logic input and "EN" is the logic enable. When "EN" is at logic "1," the device is enabled and "OUT" is driven according to the logic at the "IN" pin. When "EN" is at logic "0," the device is disabled and "OUT" is in the high-impedance state.The SN75189AD also has an ESD protection circuit. This circuit limits the peak current and ensures that severe ESD events do not damage the output pins. It also prevents false signals from being generated due to ESD events.The SN75189AD can also be used in battery charging applications. It offers features such as thermal shutdown and overvoltage protection which protect the device from excessive voltage and temperature.

Conclusion

The SN75189AD is a low-power, logic circuit driver and receiver. Its high operating voltage range, low-power operation, and special protection features make it suitable for applications such as automotive, battery charging, and other high temperature environments. Its protection circuit also prevents false signals from being generated due to ESD events.

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