SN75173DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN75173DG4 is a quad differential line receiver compliant with RS-422, RS-485, and RS-423 interface standards, featuring differential Schmitt trigger inputs and 16 mA output drive. Housed in a 16-pin SOIC package, it is RoHS-compliant and available from stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN75173DG4 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
- Quad differential Schmitt trigger inputs with hysteresis for superior noise rejection on RS-422/RS-485 bus lines in electrically noisy industrial environments
- Compliance with multiple interface standards including EIA-422-B, EIA-485-A, V.10, and V.11 enabling versatile deployment across diverse serial communication protocols
- 16 mA totem-pole output drive capability supporting direct connection to TTL and CMOS logic inputs without additional buffering
Applications
The SN75173DG4 is used in industrial RS-422 and RS-485 multi-drop communication networks for long-distance serial data reception at up to several hundred meters, typical in factory automation, PLCs, and SCADA systems. It is also applied in motor control interfaces, building automation bus receivers, and data acquisition systems where 4 independent differential receiver channels in a single 16-pin SOIC package reduce BOM count.
Specifications
| YTEOL | 0 |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE RECEIVER |
| Interface Standard | V.10; V.11; X.26; X.27; EIA-422-B; TIA-422-B; EIA-423-B; TIA-423-B; EIA-485-A; TIA-485-A |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Functions | 4 |
| Output Characteristics | TOTEM-POLE |
| Output Low Current-Max | 0.016A |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 35ns |
| Receiver Number of Bits | 4 |
| Supply Current-Max | 70mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4.75V |
| Supply Voltage-Nom | 5V |
| Supply Voltage1-Max | 5.25V |
| Supply Voltage1-Min | 4.75V |
| Supply Voltage1-Nom | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN75173DG4:
Frequently Asked Questions
Which serial communication standards does the SN75173DG4 support?
The SN75173DG4 is compliant with EIA-422-B, TIA-422-B, EIA-485-A, TIA-485-A, EIA-423-B, TIA-423-B, V.10, V.11, X.26, and X.27 standards, covering the most widely deployed RS-422 and RS-485 differential serial protocols used in industrial automation and instrumentation at data rates up to several Mbps.
How does the differential Schmitt trigger input improve signal integrity on long RS-485 cable runs?
The SN75173DG4's differential Schmitt trigger inputs provide input hysteresis that rejects noise and ground-induced common-mode voltages, enabling reliable reception even when the differential input signal drops below 200 mV across cable runs exceeding 100 meters. This prevents spurious switching that would occur with standard differential inputs under noisy industrial conditions.
Can the SN75173DG4 replace the AM26LS32 in an existing RS-422 PCB design?
Yes, the SN75173DG4 is functionally and pin-compatible with the AM26LS32 quad RS-422 receiver, making it a direct drop-in replacement. Both devices operate from a 5 V supply and provide 4 differential receiver channels in a 16-pin package with 16 mA output sink current, so no circuit changes are required.
What output current does the SN75173DG4 provide to drive downstream logic devices?
The SN75173DG4 outputs a maximum low-state current (I_ol) of 16 mA per channel using a totem-pole output stage. This is sufficient to drive standard TTL and 5 V CMOS logic inputs directly, accommodating bus lines with up to 8 unit loads typical in RS-422 and RS-485 receiver-end applications.
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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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