SN75LBC784DWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN75LBC784DWRG4 is a quad RS-423B driver/receiver transceiver complying with EIA-232 and EIA-423-B standards, offering 4 bidirectional channels with differential Schmitt trigger inputs in a compact 28-pin SOIC package. Designed for reliable serial communication in industrial and telecom equipment, it delivers 100 µA maximum input current per channel. Available from global distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- SN75LBC784DWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN75LBC784DWRG4?
- Quad-channel EIA-423-B and EIA-232 compliant line transceiver supporting both standards in a single 28-pin SOIC device
- Differential Schmitt trigger inputs on all 4 receive channels for superior noise rejection in electrically noisy industrial serial communication environments
- High-level input current maximum of 100 µA per channel ensures compatibility with standard RS-423 line impedances without external pull resistors
What is SN75LBC784DWRG4 used for?
The SN75LBC784DWRG4 is well-suited for industrial control systems and telecom equipment requiring EIA-423-B serial communication over distances up to several hundred meters at moderate baud rates. Its quad-channel architecture makes it efficient for multi-port serial controllers, reducing PCB real estate versus discrete single-channel solutions. The 28-pin SOIC form factor also fits legacy system upgrades and industrial modems where both EIA-232 and EIA-423-B compatibility are needed simultaneously.
What are the specifications of SN75LBC784DWRG4?
| Pbfree Code | No |
| YTEOL | 0 |
| Differential Output | NO |
| Driver Number of Bits | 4 |
| High Level Input Current-Max | 0.0001A |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-232; EIA-423-B |
| JESD-30 Code | R-PDSO-G28 |
| Number of Functions | 4 |
| Out Swing-Min | 8V |
| Output Characteristics | TOTEM-POLE |
| Output Low Current-Max | 0.004A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 1000ns |
| Receiver Number of Bits | 4 |
| Supply Current-Max | 12mA |
| Supply Voltage-Max | 13.2V |
| Supply Voltage-Min | 10.8V |
| Supply Voltage-Nom | 12V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Transmit Delay-Max | 2700ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN75LBC784DWRG4 datasheet?
SN75LBC784DWRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN75LBC784DWRG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What serial communication standards does SN75LBC784DWRG4 support, and how does that affect system design?
SN75LBC784DWRG4 supports EIA-232 and EIA-423-B standards on all 4 channels, allowing the same device to interface with both RS-232 and RS-423 equipment without redesigning the signal chain. The differential Schmitt trigger receiver inputs reject common-mode noise, and the 28-pin SOIC package fits standard footprints used in legacy telecom and industrial serial port designs.
How does SN75LBC784DWRG4 compare to single-channel RS-423 drivers for a 4-port serial communication board?
Using SN75LBC784DWRG4 consolidates 4 driver/receiver pairs into one 28-pin device versus 4 separate single-channel ICs, reducing BOM count and PCB area by roughly 60-70% while keeping the high-level input current to 100 µA maximum per channel. The integrated Schmitt trigger inputs also eliminate external hysteresis components that single-channel discrete solutions often require.
What maximum cable length can be driven by SN75LBC784DWRG4 under EIA-423-B, and what data rate applies at that distance?
Under EIA-423-B, the cable length versus data rate relationship allows up to approximately 1200 m at low baud rates (under 1 kbps) or around 10 m at 100 kbps, following the standard distance-rate curve. SN75LBC784DWRG4 meets the full EIA-423-B driver output voltage swing requirements, making it appropriate for both long-distance low-speed industrial sensor links and shorter high-speed serial connections within 10 m.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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