SP3082E
Overview
Information | Advanced Failsafe RS-485/RS-422 Transceivers 1/8th Unit Load, Slew-Rate Limited, ±15kV ESD-Protected |
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Supported Protocols | RS-422, RS-485 |
Supply Voltage (Nom) (V) | 5 |
No. of Tx | 1 |
No. of Rx | 1 |
Duplex | Half |
Data Rate (MAX) (Mbps) | 0.115 |
EFT (±kV) | |
HBM ESD (kV) | 15 |
IEC 61000-4-2 Contact (±kV) | 8 |
Rx Fail-Safe | Advanced |
Multi-Drop Nodes | 256 |
Transient Tolerance (V) | -65 to 65 |
Fault Tolerance (V) | |
VL Pin | |
Temperature Range (°C) | -40 to 85 |
Package | NSOIC-8 |
ICC (Max) (mA) | 0.9 |
Shutdown | ✔ |
Typ Shutdown Current (µA) | 1 |
Hot Swap | ✔ |
PROFIBUS (5V) or High Output (3V) |
The SP3080E-SP3088E family of RS-485 devices are designed for reliable,
bidirectional communication on multipoint bus transmission lines. Each
device contains one differential driver and one differential receiver.
The SP3082E, SP3085E and SP3088E are half-duplex devices; other part
numbers are full-duplex. All devices comply with TIA/EIA-485 and
TIA/EIA-422 standards. Lead-free and RoHS compliant packages are
available for all models.
These devices are ruggedized for use in harsh operating conditions over
the entire common-mode voltage range from -7V to +12V. Receivers are
specially designed to fail-safe to a logic high output state if the
inputs are left un-driven or shorted. All RS-485 bus-pins are protected
against severe ESD events up to ±15kV (Air-Gap and Human Body Model) and
up to ±8kV Contact Discharge (IEC 1000- 4-2). Drivers are protected
from excess current flow caused by bus contention or output
short-circuits by both an internal current limit and a thermal-overload
shutdown. Devices are rated for industrial (-40 to +85oC) operating
temperatures. Receivers have exceptionally high input impedance, which
places only 1/8th the standard load on a shared bus. Up to 256
transceivers may coexist while preserving full signal margin.
- Half Duplex RS485 Transceiver
- 5.0V Single Supply Operation
- Slew rate controlled driver, Low EMI
- 115kbps data rate
- Receiver failsafe on open, short or terminated lines
- 1/8th Unit Load, 256 transceivers on bus
- Hot Swap glitch protection on control inputs
- Driver short circuit current limit and thermal shutdown for overload protection
- Ultra-low 400μA Quiescent Current
- 1μA shutdown mode
- Industry standard package footprints
- Robust ESD Specifications:
- ±15KV Human Body Model
- ±8KV IEC1000-4-2 Contact Discharge
- Related Products with ±2KV EFT (MxL83101, MxL83102).
Documentation & Design Tools
Type | Title | Version | Date | File Size |
---|---|---|---|---|
Data Sheets | SP308xE Advanced-Failsafe RS-485 / RS-422 Transceivers | 2.0.0 | July 2022 | 480.5 KB |
Application Notes | DAN-190, MaxLinear UARTs in RS-485 Applications | R01 | July 2023 | 2.4 MB |
Application Notes | AN-291, RS-485 Advanced Fail-Safe Feature | R01 | May 2023 | 3.7 MB |
Application Notes | RS-232 and RS-485 PCB Layout Application Note | R00 | December 2022 | 2.8 MB |
Application Notes | AN-292, RS-485 Cable Lengths vs Data Signaling Rate | R01 | July 2022 | 2.7 MB |
Application Notes | AN-214, RS-485 Transient vs. Fault Protection | October 2011 | 142.2 KB | |
Application Notes | ANI-13, RS-485 and RS-422 Physical Topologies | D | December 2006 | 183.2 KB |
Application Notes | ANI-20, Advanced Features of the SP3070E-SP3078E and SP3080E- SP3088E High Performance RS-485 Transceivers | K | October 2006 | 615.7 KB |
Product Brochures | Interface Brochure | R01 | June 2024 | 3.6 MB |
Quality & RoHS
Part Number | RoHS | Exempt | RoHS | Halogen Free | REACH | TSCA | MSL Rating / Peak Reflow | Package |
---|---|---|---|---|---|---|---|
SP3082EEN-L/TR | N | Y | Y | Y | Y | L1 / 260ᵒC | NSOIC8 |
SP3082EEN-L | N | Y | Y | Y | Y | L1 / 260ᵒC | NSOIC8 |
Click on the links above to download the Certificate of Non-Use of Hazardous Substances.
Parts & Purchasing
Part Number | Pkg Code | Min Temp | Max Temp | Status | Buy Now | Order Samples |
---|---|---|---|---|---|---|
SP3082EEN-L | NSOIC8 | -40 | 85 | Active | Click Buy Now | Order |
SP3082EEN-L/TR | NSOIC8 | -40 | 85 | Active | Click Buy Now | Order |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
Pkg Code | Details | Quantities | Dimensions |
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NSOIC8 |
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Notifications
Distribution Date | Description | File |
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07/17/2023 | In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM A: Fixed MBB label logo for DX204001 to MaxLinear logo. ADDENDUM B: Replaced ‘All other affected products outer box label’ with clearer pictures. Corrected Date Issued (from original PCN) issue date +90 days to August 30, 2023. | PCN & PDN Download |
06/01/2023 | In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. | PCN & PDN Download |
06/01/2023 | In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM: Fixed MBB label logo for DX204001 to MaxLinear logo. | PCN & PDN Download |
08/11/2022 | Description and Purpose of Change: MaxLinear has qualified Key Foundry wafer foundry in order to increase production capacity and to facilitate long term support of the product line. The wafer process is 0.18um BCD. The process has been optimized to produce very similar product characteristics as the currently shipping devices from TSMC foundry and will meet existing datasheet specifications. Greatek is qualified for assembly of 8L NSOIC packages and is added as a supplier to the devices included in this notice. There are no changes in device reliability. (See PCN for details) | PCN & PDN Download |
07/14/2022 | Description and Purpose of Change: MaxLinear has qualified Key Foundry wafer foundry in order to increase production capacity and to facilitate long term support of the product line. The wafer process is 0.18um BCD. The process has been optimized to produce very similar product characteristics as the currently shipping devices from TSMC foundry and will meet existing datasheet specifications. Greatek is qualified for assembly of 8L NSOIC packages and is added as a supplier to the devices included in this notice. There are no changes in device reliability. (See PCN for details) | PCN & PDN Download |
07/11/2017 | Product Discontinuation Notification | PCN & PDN Download |
02/15/2017 | Qualification of alternate assembly subcon, ANST. | PCN & PDN Download |
04/28/2016 | Qualification of alternate assembly subcon, JCET. | PCN & PDN Download |
07/03/2013 | Addition of qualified 6 inch wafer processing line in Episil, in addition to the currently qualified 5 inch wafer processing line. Other change (foundry 6 inch wafer qualification). | PCN & PDN Download |
07/02/2013 | Qualification of an alternate qualified assembly supplier, ASE Chung-Li (Taiwan) for the 8L NSOIC package using copper wire bonding. Material change and alternate assembly supplier qualified. | PCN & PDN Download |
05/06/2013 | Qualified TSMC as an alternate foundry supplier. Qualified Cu wire bonding assembly process at Carsem, Ipoh, Malaysia and ASE, Chung-Li, Taiwan. Alternate foundry supplier. | PCN & PDN Download |
03/08/2012 | Wafer Fabrication Facility Wafer foundry request. | PCN & PDN Download |
12/07/2009 | Enhancement of NSOIC 8, NSOIC14 and NSOIC16 packages to Green (halogen-free) via Mold Compound & Die Attach Material. Enhance packages to be Green (halogen-free). | PCN & PDN Download |
10/03/2008 | Wafer Fabrication – Episil 1.2um CMOS To correct auto-doping of N-Well causing Vtp variation and to eliminate device leakage. | PCN & PDN Download |
FAQs & Support
Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.
Submit a Technical Support Question As a New Question
For RS-232 it is 50 feet (15 meters), or the cable length equal to a capacitance of 2500 pF, at a maximum transmission rate of 19.2kbps. When we reduce the baud rate, it allows for longer cable length. For Example:
Baud Rate (bps) | Maximum RS-232 Cable Length (ft) |
19200 | 50 |
9600 | 500 |
4800 | 1000 |
2400 | 3000 |
Fail Safe is an attempt to keep the output of the RS-485 receiver to a known state. Transceivers may have standard fail safe or advanced / enhanced receiver fail safe features. Standard fail safe supports open inputs while enhanced fail safe transceivers such as the SP339 and XR34350 support open input, shorted input and undriven terminated lines without external biasing. See Application Note ANI-22 for more detail.
The Parts & Purchasing section of the product page shows the Status of all orderable part numbers for that product. Click Show obsolete parts, to see all EOL or OBS products.
Videos
RS-485 Transceivers - Advance vs. Standard Failsafe
MaxLinear offers RS-485 transceivers with both standard and advanced receiver failsafe features. This video will show the main differences and advantages between advanced failsafe receivers and standard failsafe receivers in a typical RS485 installation.
Tips to Maintain a Successful RS-485 Link
This video provides four tips to help maintain RS-485 serial communication without data loss