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SP211ECT-L
MaxLinear, Inc.
IC TRANSCEIVER FULL 4/4 28SOIC
2320 Pcs New Original In Stock
4/5 Transceiver Full RS232 28-SOIC
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5.0 / 5.0
- (247 Ratings)
SP211ECT-L
Product Overview
6696663
DiGi Electronics Part Number
SP211ECT-L-DGManufacturer
MaxLinear, Inc.
SP211ECT-L
Description
IC TRANSCEIVER FULL 4/4 28SOICInventory
2320 Pcs New Original In Stock
4/5 Transceiver Full RS232 28-SOIC
Quantity
Minimum 1
Minimum 1
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SP211ECT-L Technical Specifications
Category
Interface, Drivers, Receivers, Transceivers
Packaging
-
Series
-
Product Status
Discontinued at Digi-Key
Type
Transceiver
Protocol
RS232
Number of Drivers/Receivers
4/5
Duplex
Full
Receiver Hysteresis
500 mV
Data Rate
230kbps
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SOIC (0.295", 7.50mm Width)
Supplier Device Package
28-SOIC
Datasheet & Documents
HTML Datasheet
SP211ECT-L-DG
Environmental & Export Classification
RoHS Status
RoHS Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
1016-1689
SP211ECT-L-DG
SP211ECTL
Standard Package
27
Alternative Parts
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Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
我非常滿意他們的售後服務，每次都能得到耐心解答，價格又很合理！
December 02, 2025
La coordination entre leur service logistique et le support client est parfaite.
December 02, 2025
Das After-Sales-Team ist äußerst engagiert und sorgt dafür, dass alle Anliegen zeitnah geklärt werden.
December 02, 2025
DiGi Electronics offers exceptional after-sales support that truly sets them apart.
December 02, 2025
Order arrived faster than I expected, with secure packaging.
December 02, 2025
DiGi Electronics' after-sales support is proactive and empathetic, making our partnership very smooth.
December 02, 2025
DiGi Electronics' customer service is friendly and efficient.
December 02, 2025
Excellent after-sales support! Their team is always quick to respond and resolve any issues I encounter.
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Frequently Asked Questions (FAQ)
Can the SP211ECT-L be used in a 3.3V system if I only need basic RS232 communication, and what are the risks of operating it outside its specified 4.5V–5.5V supply range?
The SP211ECT-L is not recommended for 3.3V operation, as its datasheet specifies a minimum supply voltage of 4.5V. Attempting to run it at 3.3V may result in unreliable charge pump operation, insufficient RS232 output levels (which require ±5V minimum), and potential failure to meet EIA/TIA-232 signal standards. This could lead to intermittent communication, increased error rates, or complete link failure—especially under load or temperature variation. If 3.3V compatibility is required, consider replacing it with a true 3.3V RS232 transceiver like the MAX3232E or SP3232E, which integrate internal voltage doublers and inverters optimized for lower supply rails.
What are the key reliability concerns when using the SP211ECT-L in an industrial environment with ambient temperatures near 65°C, given its 0°C to 70°C operating range?
Operating the SP211ECT-L near its upper temperature limit (70°C) in an industrial setting increases the risk of accelerated aging, reduced charge pump efficiency, and potential drift in receiver hysteresis (500 mV nominal). At sustained high temperatures, capacitor leakage in the internal charge pump can degrade, leading to diminished RS232 output swing and possible communication failures during peak data bursts. To mitigate this, ensure adequate PCB copper pour for thermal dissipation, avoid enclosing the device in tight enclosures without airflow, and consider derating by selecting a transceiver rated for -40°C to 85°C—such as the ADM561JRZ—if long-term field reliability is critical.
Can I replace the discontinued SP211ECT-L with the HIN211ECBZ in an existing 5V design without modifying the PCB or firmware?
The HIN211ECBZ is a functional drop-in replacement for the SP211ECT-L in most 5V applications, sharing the same 28-SOIC package, pinout, and 4-driver/5-receiver configuration. Both support full-duplex RS232 communication at up to 230 kbps and operate from 4.5V to 5.5V. However, verify that the HIN211ECBZ’s receiver hysteresis and propagation delay meet your timing margins, especially in noisy environments. While no firmware changes are typically needed, test signal integrity under worst-case load conditions, as subtle differences in output slew rate or load driving capability could affect long-cable performance. Always confirm RoHS and MSL compatibility during procurement.
What design constraints should I consider when routing the SP211ECT-L’s charge pump capacitors on a dense 4-layer PCB to avoid noise coupling into sensitive analog sections?
The SP211ECT-L relies on external charge pump capacitors (typically 0.1 µF) to generate RS232-compliant ± voltages from a single 5V supply. Poor layout can inject switching noise into adjacent analog circuits. Route these capacitors as close as possible to pins 15–18 (C1+, C1–, C2+, C2–), use short, direct traces, and avoid running high-speed digital or analog signals beneath the device or capacitor paths. Place a solid ground plane beneath the IC but avoid splitting it; instead, use a unified ground with a single-point connection to the system ground if mixed-signal isolation is needed. Failure to follow these practices may result in increased EMI, reduced receiver sensitivity, or false triggering due to coupled transients.
Is the SP211ECT-L suitable for multi-drop RS232 networks with more than two nodes, and what are the limitations compared to alternatives like the ADM561JRZ?
The SP211ECT-L is not designed for multi-drop RS232 networks. RS232 is inherently point-to-point, and connecting multiple receivers to a single driver exceeds the standard’s load specification (typically 3kΩ to 7kΩ per receiver). Doing so with the SP211ECT-L can cause signal degradation, reduced voltage swing, and communication errors due to excessive capacitive and resistive loading. In contrast, the ADM561JRZ offers improved drive strength and better tolerance to marginal loads, but even it is not a true multi-drop solution. For networked communication, consider switching to RS485 with transceivers like the MAX485 or SN65HVD72, which support up to 32 nodes on a single bus with proper termination and biasing.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
SP211ECT-L CAD Models
MaxLinear, Inc. SP211ECT-L PCB symbols & footprints
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