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Product Detailed Parameters
- Description：IC REDRIVER RS422/RS485 1CH 8DIP
- Series：-
- Mfr：Texas Instruments
- Package：Bulk,Tube
- 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：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Capacitance - Input：-
- Grade：-
- Qualification：-
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Overview
The SN75178BP is a differential bus repeater manufactured by Texas Instruments, designed for RS-422 and RS-485 communication standards. It integrates one driver and one receiver within an 8-pin PDIP package. The device operates on a single 5V supply with a voltage range of 4.75V to 5.25V. Key electrical specifications include a propagation delay of 19ns and a data rate capability of up to 10Mb/s. The unit draws approximately 57mA of supply current and functions reliably across an operating temperature range of 0°C to 70°C.
Feature Summary
- Provides differential signal repeating capabilities for robust long-distance communication
- Supports standard RS-422 and RS-485 interface protocols
- Features non-inverting logic polarity for straightforward signal integration
Applications
- RS-422 and RS-485 network node expansion
- Industrial control system signal buffering
- Building automation and security systems
Procurement Notes
Verify the specific suffix 'BP' indicates the PDIP package variant when sourcing. Confirm RoHS compliance status as manufacturing practices evolve. Check for end-of-life notifications or discontinuation notices from Texas Instruments prior to finalizing procurement plans for long-term projects.
Selection Notes
Select this component when through-hole mounting is required for the SN75178B functionality. Ensure the design accommodates the 8-pin DIP footprint dimensions. Verify that the 57mA supply current fits within the system power budget constraints compared to lower-power alternatives.
Part Context
This part belongs to the SN7517x series of differential bus repeaters from Texas Instruments. It serves as a legacy through-hole alternative to surface-mount variants like the SN75178BPSR. The component is widely recognized in industrial electronics for its reliability in noisy environments.
Replacement Considerations
SN75178BPSR (Surface Mount), SN75178BPE4 (RoHS Compliant PDIP).
FAQ
What is the maximum data rate supported by the SN75178BP?
The SN75178BP supports data rates up to 10Mb/s.
Does the SN75178BP support half-duplex or full-duplex operation?
As a bus repeater with one driver and one receiver, it is typically used in half-duplex configurations common to RS-485 networks.
