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SP233ECT-L
MaxLinear, Inc.
IC TRANSCEIVER FULL 2/2 20SOIC
3608 Pcs New Original In Stock
2/2 Transceiver Full RS232 20-SOIC
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5.0 / 5.0
- (109 Ratings)
SP233ECT-L
Product Overview
6686572
DiGi Electronics Part Number
SP233ECT-L-DGManufacturer
MaxLinear, Inc.
SP233ECT-L
Description
IC TRANSCEIVER FULL 2/2 20SOICInventory
3608 Pcs New Original In Stock
2/2 Transceiver Full RS232 20-SOIC
Quantity
Minimum 1
Minimum 1
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SP233ECT-L Technical Specifications
Category
Interface, Drivers, Receivers, Transceivers
Packaging
-
Series
-
Product Status
Discontinued at Digi-Key
Type
Transceiver
Protocol
RS232
Number of Drivers/Receivers
2/2
Duplex
Full
Receiver Hysteresis
500 mV
Data Rate
240kbps
Voltage - Supply
4.5V ~ 5.5V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (0.295", 7.50mm Width)
Supplier Device Package
20-SOIC
Datasheet & Documents
HTML Datasheet
SP233ECT-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
1016-1889-5
SP233ECTL
SP233ECT-L-DG
Standard Package
37
Alternative Parts
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Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
L'emballage biodégradable est à la fois pratique et respectueux de la planète.
December 02, 2025
Günstige Preise bei DiGi Electronics lassen mich immer wieder zugreifen.
December 02, 2025
I have always received my orders on the promised date, which is impressive.
December 02, 2025
I was impressed by how quickly my order was processed and shipped. The logistics efficiency truly exceeded my expectations.
December 02, 2025
The pricing at DiGi Electronics is highly competitive, providing great value for quality components.
December 02, 2025
Their customer care after a sale is superb, always ensuring my concerns are addressed.
December 02, 2025
Clear pricing and consistent quality have made me a loyal customer.
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Frequently Asked Questions (FAQ)
What are the key risks when replacing the discontinued SP233ECT-L with the SP232ACT-L in an existing RS232 design, and how can I ensure signal integrity is maintained?
The SP233ECT-L and SP232ACT-L share similar pinouts and functionality, but the SP232ACT-L operates at a lower maximum data rate (120 kbps vs. 240 kbps) and has different charge pump characteristics, which may affect rise/fall times and output voltage levels under load. If your application operates near 240 kbps or uses long cables, signal degradation or timing errors may occur. To mitigate risk, validate the SP232ACT-L under worst-case load and cable length conditions, and consider adding series termination resistors or reducing baud rate if necessary. Always verify ±5V RS232 output compliance with your receiver thresholds.
Can the SP233ECT-L be used in industrial environments with temperatures exceeding 70°C, and what derating or design modifications are needed?
No, the SP233ECT-L is rated for 0°C to 70°C operation, and exceeding this range risks latch-up, increased leakage, or premature failure. For industrial use (e.g., -40°C to 85°C), consider upgrading to a qualified industrial-grade alternative like the MAX3232E (from Maxim Integrated), which offers extended temperature range and improved ESD protection. If redesign isn't feasible, implement thermal monitoring, heatsinking, or airflow to keep the junction temperature within spec—especially critical given the 20-SOIC package’s limited thermal dissipation.
How does the SP233ECT-L’s 500 mV receiver hysteresis impact noise immunity in electrically noisy environments like motor control or factory floors?
The 500 mV hysteresis in the SP233ECT-L improves noise immunity by preventing chatter on slowly rising or noisy RS232 signals, but it may not be sufficient in high-interference environments with ground loops or EMI from motors/relays. In such cases, add external RC filtering at the receiver inputs (e.g., 100 Ω + 100 pF) and ensure proper grounding and shielding of RS232 cables. For critical applications, consider transceivers with higher hysteresis (e.g., 700 mV in the MAX3232) or use isolated RS232 converters to break ground loops.
Is it safe to operate the SP233ECT-L at 5.5V supply voltage continuously, and what long-term reliability concerns should I consider?
Yes, 5.5V is within the absolute maximum supply range, but continuous operation at the upper limit increases power dissipation in the internal charge pump and may accelerate oxide wear in CMOS structures. This can reduce long-term reliability, especially near the 70°C thermal limit. To enhance lifespan, operate at 5.0V ±5% when possible, ensure adequate PCB copper pour for heat spreading, and avoid simultaneous high data rates and high ambient temperatures. Monitor for increased supply current as an early indicator of degradation.
What design considerations are critical when integrating the SP233ECT-L into a space-constrained 2-layer PCB with mixed digital and analog signals?
When placing the SP233ECT-L on a 2-layer board, prioritize short, direct traces for the RS232 I/O lines to minimize inductance and crosstalk. Keep the charge pump capacitors (C1–C4) within 5 mm of the IC pins to reduce loop area and EMI. Avoid routing high-speed digital signals (e.g., SPI, clocks) parallel to RS232 lines—use ground guard traces if necessary. Since the 20-SOIC package has limited thermal relief, dedicate a solid ground plane under the device and connect it via multiple vias to improve heat dissipation and reduce ground bounce, which is critical for maintaining ±5V RS232 output levels.
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.
SP233ECT-L CAD Models
MaxLinear, Inc. SP233ECT-L PCB symbols & footprints
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