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Product Detailed Parameters
- Description：IC REDRIVER RS422/RS485 1CH 8SO
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：Buffer, ReDriver
- Applications：RS422, RS485
- Input：-
- Output：-
- Data Rate (Max)：-
- Number of Channels：1
- Delay Time：19ns
- Signal Conditioning：-
- Voltage - Supply：4.75V ~ 5.25V
- Current - Supply：57mA
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.209", 5.30mm Width)
- Supplier Device Package：8-SO
- Capacitance - Input：-
- Grade：-
- Qualification：-
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Overview
The SN75178BPSR is a single-channel RS-422/RS-485 line transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.75V to 5.25V and draws a typical supply current of 57mA. The device supports data rates up to 10 Mb/s with a propagation delay of 19ns. It features three-state outputs and is housed in an 8-SOIC package (5.30mm width). The component functions as a buffer and adapter driver, designed for half-duplex communication applications.
Feature Summary
- Integrates one differential driver and one receiver in a single channel configuration
- Provides high noise immunity through Schmitt-trigger inputs on the receiver
- Supports standard RS-422 and RS-485 communication protocols
- Features three-state outputs to facilitate bus sharing in multi-drop networks
Applications
- Industrial control systems requiring robust serial communication
- Building automation and security network interfaces
- Multi-point data transmission links using RS-485 standards
- Process control instrumentation with differential signaling requirements
Procurement Notes
Verify the specific suffix 'PSR' confirms the tape-and-reel packaging format and SOIC-8 footprint. Confirm RoHS compliance status matches current environmental regulations. Check for obsolescence notices or lifecycle changes from Texas Instruments prior to finalizing procurement plans.
Selection Notes
Select this component when a single-channel RS-485 transceiver with low power consumption is required. Ensure the design accommodates the 4.75V to 5.25V supply voltage range. Verify that the 19ns propagation delay meets the timing constraints of the target application's baud rate and cable length.
Part Context
This part belongs to the SN7517x family of RS-422/RS-485 interface ICs. It shares functional similarities with the SN75176BPSR but differs in specific electrical characteristics and pinout configurations. The SN75178BPSR is distinct from quad receivers like the SN75175DR, offering integrated transmit and receive capabilities in a compact 8-pin package.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Texas Instruments official cross-reference tools for compatible alternatives.
