Overview
Information | 3.3V, 15kV, Failsafe RS-485/RS-422 Full-Duplex |
---|---|
Supported Protocols | RS-422, RS-485 |
Supply Voltage (Nom) (V) | 3.3 |
No. of Tx | 1 |
No. of Rx | 1 |
Duplex | Full |
Data Rate (MAX) (Mbps) | 0.5 |
HBM ESD (kV) | 15 |
IEC 61000-4-2 Contact (±kV) | 8 |
Rx Fail-Safe | Advanced |
Multi-Drop Nodes | 256 |
Transient Tolerance (V) | |
Fault Tolerance (V) | |
VL Pin | |
Temperature Range (°C) | -40 to 85 |
Package | NSOIC-8 |
ICC (Max) (mA) | 1.5 |
Shutdown | |
Typ Shutdown Current (µA) | 0.05 |
Hot Swap | |
PROFIBUS (5V) or High Output (3V) |
The SP3070E-3078E differential line transceivers are suitable for
bidirectional communication on balanced multipoint bus transmission
lines and comply with both RS485 and RS422 EIA Standards. Each device
consists of a differential driver and differential receiver. All devices
operate from a 3.3V power supply.
High receiver input impedance allows a large number of transceivers to
share a common data bus while maintaining signal margin and without
excessive loading or use of expensive repeaters. The high impedance
driver output is maintained over the entire common-mode voltage range
from -7 to +12V. Receivers will failsafe to logic 1 output when inputs
are open, shorted or terminated. Drivers include built-in short-circuit
protection and a thermal-overload shutdown to protect against excessive
power dissipation from bus contention or cable faults. All RS485
receiver inputs and driver outputs are ESD protected up to ±15kV
(Air-Gap and Human Body Model) and up to ±8kV Contact discharge (IEC
1000-4-2).
- ±15kV ESD protection for RS485 pins
- 3.3V low-power operation
- Advanced receiver-failsafe protection for open, shorted or terminated lines
- Up to 256 Transceivers may share bus
- Very low load for 8x greater fan-out
- Hot Swap glitch protection RE and DE
- Thermal shutdown protects against driver contention
- Available in three industry standard footprints
- SP3070E, SP3073E and SP3076E in Full-Duplex (14 pin)
- SP3071E, SP3074E and SP3077E in Full-Duplex (8 pin)
- SP3072E, SP3075E and SP3078E in Half-Duplex (8 pin)
- Three applications-optimized speed grades
- SP3070-72E: 250kbps fully slew-limited
- SP3073-75E: 500kbps slew-limited
- SP3076-78E: 16Mbps high speed
- Small form factor SO-narrow packages
- Industrial (-40 to +85ºC) & Extended (-40 to +85ºC) temperature grades
Documentation & Design Tools
Type | Title | Version | Date | File Size |
---|---|---|---|---|
Data Sheets | SP3070E - SP3078E Family ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers | 2.0.0 | August 2020 | 300.7 KB |
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 | 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 |
Product FAQs | SP3074e FAQ | 1.0.0 | February 2007 | 234.9 KB |
Quality & RoHS
Parts & Purchasing
Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | Buy Now | Order Samples | PDN |
---|---|---|---|---|---|---|---|---|
SP3074EEN-L | NSOIC8 | -40 | 85 | OBS | ||||
SP3074EEN-L/TR | NSOIC8 | -40 | 85 | Active | Click Buy Now | Order | ||
SP3074EMN-L | NSOIC8 | -40 | 125 | OBS | SP3074EEN-L/TR |
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 |
---|---|---|
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 |
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 |
08/27/2015 | Exar has qualified 0.25um CMOS process at TSMC.Alternate assembly sites have been qualified: - Carsem has been added for 8L and 14L nSOIC- ASE Chung-Li has been added for 8L nSOIC Process change, alternate foundry and assembly sites | PCN & PDN Download |
09/09/2013 | Qualification of 0.25um CMOS process at TSMC and alternate assembly sites, Carsem (for 8 and 14L nSOIC) and ASE Chung-Li (for 8L nSOIC). Process Change and Alternate Foundry & Assembly/Test Site. | PCN & PDN Download |
07/26/2013 | 5-inch wafer with PSG 10KÅ passivation Material and other (foundry 6 inch wafer qualification) changes. | 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 |
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 |
02/28/2007 | Product Obsolescence Letter and Discontinuation Notification. Discontinued. | PCN & PDN Download |
06/26/2006 | Amendment of PCN transferring certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Episil instead of Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site | PCN & PDN Download |
05/08/2006 | Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site | PCN & PDN Download |
02/02/2006 | Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site | 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