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Introduction Of SN75ALS199D

Auth: Date:2026/8/3 Source:WECHIP Visit:1 Related Key Words: RS-422 Receiver Differential Line Receiver Quad Receiver Industrial Interface IC TTL Compatible Output

Ⅰ.Overview of SN75ALS199D

The SN75ALS199D is a high-speed quadruple differential line receiver designed to convert differential input signals into standard TTL-compatible outputs. Featuring high noise immunity, low power consumption and 3-state outputs, it is widely used in RS-422 communication, industrial automation, instrumentation and high-speed data transmission applications.

 

 

. SN75ALS199D Parameter

Category: Integrated Circuits (ICs) Interface Drivers, Receivers, Transceivers

Voltage - Supply: 4.75V ~ 5.25V

Manufacturer: Texas Instruments

Operating Temperature: 0°C ~ 70°C

Packaging: Tube

Mounting Type: Surface Mount

Part Status: Obsolete

Package / Case: 16-SOIC (0.154", 3.90mm Width)

Type: Receiver

Supplier Device Package: 16-SOIC

Number of Drivers/Receivers: 0/4

Base Product Number: 75ALS199

Receiver Hysteresis: 120 mV                                           

 

 

. SN75ALS199D Characteristics

High-Speed Differential Signal Reception: The SN75ALS199D supports differential data transmission rates up to 20 Mbps, enabling reliable communication in high-speed industrial and communication systems while maintaining signal integrity.

Wide Common-Mode Voltage Range: The receiver operates with a ±7V common-mode input range and ±300mV input sensitivity, allowing stable communication even in electrically noisy environments.

Excellent Noise Immunity: Integrated input hysteresis improves immunity against electrical noise and prevents false switching caused by signal disturbances, ensuring reliable communication.

3-State TTL-Compatible Outputs: Each receiver provides 3-state TTL-compatible outputs, allowing multiple receivers to share the same data bus while simplifying system expansion.

High Input Impedance: The receiver features high input impedance, reducing loading effects on the communication line and supporting multi-drop network configurations.

 


. SN75ALS199D Application

RS-422 Communication Systems: Used as a differential receiver in RS-422 communication networks to ensure reliable long-distance data transmission.

Industrial Automation: Suitable for PLCs, industrial controllers and factory automation equipment requiring robust communication interfaces.

Instrumentation Equipment: Provides differential signal reception for measurement instruments and data acquisition systems, improving signal integrity.

Communication Equipment: Used in networking devices and communication modules to receive balanced differential data signals.

Embedded Systems: Interfaces with MCUs, DSPs and FPGAs to receive differential communication signals in embedded applications.

 


.Conclusion

The SN75ALS199D combines high-speed differential reception, wide common-mode tolerance, excellent noise immunity and low-power operation, making it an ideal solution for RS-422 communication and industrial data transmission systems.


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