LTC2851IMS8#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LTC2851IMS8#TRPBF is a 3.3 V full-duplex RS-485/RS-422 transceiver by Analog Devices supporting data rates up to 20 Mbps with differential Schmitt-trigger receiver inputs for high noise immunity. Housed in an 8-pin MSOP package, it is rated for industrial -40°C to +85°C operation and drives bus networks with up to 32 unit loads. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LTC2851IMS8#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.6000(MOQ 19)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC2851IMS8#TRPBF?
- Full-duplex RS-485/RS-422 operation at up to 20 Mbps on a single 3.3 V supply, enabling high-speed industrial serial communication without a dual-supply design
- Differential Schmitt-trigger receiver inputs with ±7 V common-mode range (EIA-485-A/EIA-422 compliant) for robust noise rejection on long industrial cable runs
- Compact 8-pin MSOP package supporting up to 32 unit loads on the bus, making it suitable for multi-node industrial networks in space-constrained control boards
What is LTC2851IMS8#TRPBF used for?
The LTC2851IMS8#TRPBF is used in industrial automation, PLC communication networks, and motor drive systems where RS-485/RS-422 full-duplex links must reliably transmit data at 20 Mbps over distances up to 100 meters. Its 3.3 V single-supply operation and high noise immunity make it well-suited for multi-drop bus architectures in factory floor equipment, building automation controllers, and smart energy meters. It also supports point-to-point RS-422 links in medical instruments, test equipment, and ruggedized embedded computing platforms.
What are the specifications of LTC2851IMS8#TRPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1660 |
| YTEOL | 10 |
| Differential Output | YES |
| Driver Number of Bits | 1 |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | EIA-485-A; TIA-485-A; EIA-422 |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 70ns |
| Receiver Number of Bits | 1 |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transmit Delay-Max | 50ns |
| ## LTC2851IMS8#TRPBF Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the LTC2851IMS8#TRPBF datasheet?
LTC2851IMS8#TRPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC2851IMS8#TRPBF?
Compatible alternatives and drop-in replacements for LTC2851IMS8#TRPBF:
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Frequently Asked Questions
What maximum data rate does the LTC2851IMS8#TRPBF support on an RS-485 bus, and how far can it drive data at lower speeds?
The LTC2851IMS8#TRPBF supports up to 20 Mbps data rate on RS-485/RS-422. At reduced data rates of 100 kbps or less, the cable length can extend to approximately 1200 meters using standard 120 Ω twisted-pair cable. At 20 Mbps, the maximum reliable distance drops to roughly 10–15 meters, so the designer must balance speed against cable length based on the specific application topology.
How does the differential Schmitt-trigger receiver in the LTC2851IMS8#TRPBF improve noise immunity compared to a standard RS-485 receiver?
The Schmitt-trigger hysteresis on the differential receiver inputs typically provides 50–200 mV of switching hysteresis, preventing false triggering from noise superimposed on the bus. Combined with a ±7 V common-mode input range (EIA-485-A compliant), the receiver rejects ground potential differences of up to 7 V between nodes — essential in industrial environments where equipment ground planes can differ by several volts due to long cable runs and nearby switching power supplies.
How many nodes can share an RS-485 bus driven by the LTC2851IMS8#TRPBF, and what termination resistor is recommended?
The LTC2851IMS8#TRPBF presents a standard 1 unit load (UL) on the RS-485 bus. An RS-485 bus can accommodate up to 32 standard unit loads, so theoretically 32 LTC2851IMS8 nodes can coexist on a single bus segment. A 120 Ω termination resistor matched to the cable's characteristic impedance should be placed at each end of the bus cable to minimize reflections at 20 Mbps data rates.
Is the LTC2851IMS8#TRPBF suitable for a 3.3 V microcontroller interface, and does it require a separate RS-485 bus supply?
Yes, the LTC2851IMS8#TRPBF operates entirely from a 3.3 V supply, so its logic-side signals connect directly to 3.3 V microcontroller UART TX/RX and direction-enable pins without level shifters. The bus-side differential outputs also derive from the same 3.3 V rail, exceeding the EIA-485 minimum differential output voltage of 1.5 V. No separate higher-voltage bus supply is needed, simplifying power supply design in 3.3 V embedded systems.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $3.4500 | $65.55 |
| 500+ | $2.8250 | $1412.50 |
| 1000+ | $2.6000 | $2600.00 |
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