SN65C1167ERGYRG4 Texas Instruments Integrated Circuit (Other) In Stock
SN65C1167ERGYRG4 is a full-duplex RS-422/RS-485 line transceiver with 2 drivers and 2 receivers in a 16-pin VQFN package. It features differential Schmitt-trigger inputs for noise immunity and supports EIA-422-B and TIA-422-B standards. Designed for industrial data communication, it suits multi-drop and point-to-point serial links in control and automation systems.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN65C1167ERGYRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2-driver / 2-receiver full-duplex RS-422 and RS-485 transceiver
- Differential Schmitt-trigger inputs for high common-mode noise immunity
- Compliant with EIA-422-B, TIA-422-B, and V.11 interface standards
- 16-pin VQFN (4 mm × 3.5 mm) package for compact PCB integration
- Low input high-level current (1 µA max) minimizing bus loading
- Differential output architecture for long-distance balanced-line signaling
- 15-year product lifecycle commitment for long-service industrial designs
Applications
The SN65C1167E is used in industrial automation fieldbus links and PLC communication ports where RS-422 or RS-485 differential signaling must span distances up to 1200 meters at reduced data rates. It suits multi-drop serial networks in building management systems, SCADA front-end interfaces, and motor drive communication cards. The compact VQFN package makes it a practical choice for high-density industrial I/O boards with many communication ports per unit area.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Differential Output | YES |
| Driver Number of Bits | 2 |
| High Level Input Current-Max | 0.000001A |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-422-B; TIA-422-B; V.11 |
| JESD-30 Code | R-XQCC-N16 |
| JESD-609 Code | e4 |
| Number of Functions | 2 |
| Out Swing-Min | 2V |
| Output Low Current-Max | 0.02A |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC16/20,.14X.16,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 27ns |
| Receiver Number of Bits | 2 |
| Supply Current-Max | 9mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 16ns |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN65C1167ERGYRG4:
Frequently Asked Questions
Does the SN65C1167ERGYRG4 support both RS-422 and RS-485, and what is the practical difference?
Yes, it is compliant with both EIA-422-B (point-to-point, full-duplex) and TIA-422-B/RS-485 (multi-drop, up to 32 unit loads per bus). RS-422 uses separate transmit and receive pairs for full-duplex operation, while RS-485 allows a single pair shared by multiple nodes. The 2 drivers and 2 receivers on this device map directly to a full-duplex RS-422 configuration.
How does the differential Schmitt-trigger input improve noise rejection in an industrial wiring environment?
The Schmitt-trigger input adds hysteresis of typically 50 mV to 100 mV on top of the differential receiver's common-mode rejection, which already spans ±7 V. In noisy factory floors with VFD switching transients or relay contact bounce, this dual noise-rejection mechanism prevents false data transitions that would occur with a standard comparator-input receiver.
How small is the SN65C1167ERGYRG4 package, and how does it compare to a typical SOIC-16 transceiver?
The 16-pin VQFN body measures 4 mm × 3.5 mm, occupying roughly 14 mm² of PCB area. A standard SOIC-16 package typically measures 10 mm × 4 mm, occupying approximately 40 mm². The VQFN is therefore about 65% smaller — a significant saving on high-density industrial I/O cards where 8 or more transceivers may be mounted on a single board.
At what maximum data rate can the SN65C1167 reliably transmit data over a 100-meter RS-422 cable?
RS-422 balanced-line transceivers like the SN65C1167 typically support data rates up to 10 Mbps over short cables (under 10 meters). At 100 meters, the cable capacitance limits practical throughput to approximately 1 Mbps for 24 AWG twisted-pair. For longer runs of 1200 meters the usable rate drops to roughly 100 kbps, consistent with the TIA-422-B standard's distance-rate trade-off.
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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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