SN75LBC776DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN75LBC776DWG4 is a single-chip GeoPort transceiver from Texas Instruments supporting EIA-422-B, EIA-423-B, and AppleTalk interfaces. It integrates two differential transceiver functions with Schmitt-trigger inputs and a minimum output swing of 4 V in a 20-pin SOIC package. Suitable for serial communication bus interface designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN75LBC776DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Supports EIA-422-B, EIA-423-B, and AppleTalk interface standards in a single chip
- Dual transceiver functions with independent transmit and receive paths
- Differential Schmitt-trigger inputs providing noise-immune data reception
- Minimum differential output swing of 4 V for robust signal transmission
- 20-pin SOIC package enabling compact serial bus interface PCB designs
Applications
The SN75LBC776DWG4 is used in industrial serial communication networks, point-of-sale terminals, and legacy AppleTalk networking equipment requiring EIA-422 or EIA-423 compliant differential transceivers. It serves as a bus interface in factory automation, building control systems, and RS-422 multi-drop serial links where balanced differential signaling ensures reliable long-distance data transmission.
Specifications
| YTEOL | 0 |
| Differential Output | YES |
| Driver Number of Bits | 2 |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-422-B; EIA-423-B; APPLETALK |
| JESD-30 Code | R-PDSO-G20 |
| Number of Functions | 2 |
| Out Swing-Min | 4V |
| Output Low Current-Max | 0.002A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 75ns |
| Receiver Number of Bits | 3 |
| Supply Current-Max | 15mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4.75V |
| Supply Voltage-Nom | 5V |
| 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 | 75ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN75LBC776DWG4:
Frequently Asked Questions
What communication standards does the SN75LBC776DWG4 support?
The SN75LBC776DWG4 is compatible with EIA-422-B (balanced differential), EIA-423-B (unbalanced single-ended differential), and the AppleTalk serial interface standard. This multi-standard support makes it versatile for bridging legacy serial networks, industrial RS-422 buses, and older Apple networking equipment in mixed-interface system designs.
What is the output swing specification of the SN75LBC776DWG4?
The device provides a minimum differential output swing of 4 V, which ensures adequate signal margin over long cable runs and in the presence of common-mode noise. This meets the EIA-422-B specification requiring at least 2 V differential across the specified load resistance for reliable data transmission.
Does the SN75LBC776DWG4 use Schmitt-trigger inputs?
Yes. The receiver inputs use differential Schmitt-trigger architecture, providing hysteresis that improves immunity to common-mode noise, ground offsets, and reflections on long cable runs. This is especially important in industrial environments where electrical noise from motors and switching equipment can corrupt slow-edge differential signals.
What package does the SN75LBC776DWG4 use?
It comes in a 20-pin SOIC (Small Outline Integrated Circuit) package with a standard 0.3-inch body width. The SOIC format is widely supported in PCB CAD libraries and assembly processes, making the SN75LBC776DWG4 easy to integrate into industrial serial communication and legacy network interface board designs.
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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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