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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 SN75178BPSRE4 is a differential bus repeater manufactured by Texas Instruments, designed for RS-422 and RS-485 communication standards. It features one channel with a single driver and receiver pair housed in an 8-SOIC package. The device operates within a supply voltage range of 4.75V to 5.25V and draws a supply current of 57mA. It supports data rates up to 10Mb/s with a propagation delay of 19ns. The component functions across an operating temperature range of 0°C to 70°C and includes ESD protection on its inputs.
Feature Summary
- Provides differential signal transmission for robust noise immunity in industrial environments
- Includes input ESD protection to enhance reliability against electrostatic discharge events
- Supports standard RS-422 and RS-485 protocols for half-duplex bus communication
Applications
- RS-422 and RS-485 communication networks
- Industrial control systems requiring long-distance data transmission
- Building automation and security systems
Procurement Notes
Verify the specific suffix 'E4' indicates lead-free compliance during procurement. Confirm the package type matches the required PCB footprint. Check current availability status as distribution channels may vary. Ensure the operating temperature range meets the target application requirements before finalizing orders.
Selection Notes
Select this component when a single-channel differential repeater is needed for RS-422 or RS-485 buses. Compare propagation delay and supply current against system timing constraints. Verify that the 8-SOIC package dimensions fit the mechanical design. Consider thermal management if multiple units are placed closely together on the board.
Part Context
This part belongs to the SN7517x series of differential bus transceivers from Texas Instruments. It serves as a buffer and line driver for serial communication interfaces. The 'E4' suffix typically denotes environmental compliance, specifically lead-free manufacturing, distinguishing it from standard commercial variants while maintaining identical electrical performance.
Replacement Considerations
SN75178BP: Pin-compatible alternative with similar electrical characteristics but potentially different packaging or compliance status. SN75176BPSR: Similar function but verify specific interface compatibility and pinout alignment before substitution.
