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Home > Products > Integrated Circuits (ICs) > Interface - Drivers, Receivers, Transceivers > SP310ACT-L/TR
MaxLinear, Inc.
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SP310ACT-L/TR

Manufacturer Part Number:
SP310ACT-L/TR
Manufacturer / Brand
MaxLinear, Inc.
Part of Description:
IC TRANSCEIVER FULL 2/2 18SOIC
Datasheets:
SP310ACT-L/TR(1).pdfSP310ACT-L/TR(2).pdf
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 17592 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number SP310ACT-L/TR
Manufacturer / Brand MaxLinear, Inc.
Stock Quantity 17592 pcs Stock
Category Integrated Circuits (ICs) > Interface - Drivers, Receivers, Transceivers
Description IC TRANSCEIVER FULL 2/2 18SOIC
Lead Free Status / RoHS Status: RoHS Compliant
RFQ SP310ACT-L/TR Datasheets SP310ACT-L/TR Details PDF
SP310ACT-L/TR Details PDF for KR.pdf
SP310ACT-L/TR Details PDF for IT.pdf
SP310ACT-L/TR Details PDF for ES.pdf
SP310ACT-L/TR Details PDF for FR.pdf
SP310ACT-L/TR Details PDF for DE.pdf
Voltage - Supply 4.5V ~ 5.5V
Type Transceiver
Supplier Device Package 18-SOIC
Series -
Receiver Hysteresis 500 mV
Protocol RS232
Package / Case 18-SOIC (0.295', 7.50mm Width)
Package Tape & Reel (TR)
Operating Temperature 0°C ~ 70°C
Number of Drivers/Receivers 2/2
Mounting Type Surface Mount
Duplex Full
Data Rate 240kbps

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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SP310ACT-L/TR Product Details:

The Exar Corporation SP310ACT-L/TR is a 2/2 Transceiver Full RS232 18-SOIC device that provides a comprehensive interface solution for data communication applications. This integrated circuit (IC) belongs to the Interface - Drivers, Receivers, Transceivers category, offering a robust and reliable interface between digital logic and RS232 serial ports.

Designed to address the challenges of modern data communication systems, the SP310ACT-L/TR features a full-duplex transceiver with two drivers and two receivers, supporting data rates up to 240kbps. The device operates within a wide voltage range of 4.5V to 5.5V, making it compatible with a variety of power supplies.

The key specifications of the SP310ACT-L/TR include a 500mV receiver hysteresis, ensuring reliable signal detection and noise immunity. The product is RoHS compliant and lead-free, addressing the industry's growing demand for environmentally-friendly electronics.

The primary advantages of the SP310ACT-L/TR include its versatility, high-speed data transmission, and robust interface capabilities. This product is well-suited for a wide range of applications, such as industrial control systems, medical equipment, point-of-sale terminals, and other data communication devices that require a reliable RS232 interface.

The SP310ACT-L/TR is packaged in an 18-SOIC (Small Outline Integrated Circuit) format and is available in Tape & Reel (TR) packaging, simplifying integration and assembly processes. The device has a Moisture Sensitivity Level (MSL) of 3, requiring 168 hours of pre-conditioning for surface mount applications.

While the SP310ACT-L/TR is a unique product, there are several equivalent or alternative models available from Exar Corporation and other manufacturers. Some comparable products include the MAX232, ST232, and SN75176 series, which offer similar functionality and interface capabilities. However, it is important to carefully review the specific features and compatibility requirements of each model to ensure it meets the needs of the intended application.

SP310ACT-L/TR Image
SP310ACT-L/TR (1)

SP310ACT-L/TR Key Technical Attributes

Manufacturer Part Number: SP310ACT-L/TR

Manufacturer: Exar Corporation

Package / Case: 18-SOIC (0.295", 7.50mm Width)

SP310ACT-L/TR Packing Size

Manufacturer's packaging: 18-SOIC

Encapsulation: SOP18

Package: Tape & Reel (TR)

Moisture Sensitivity Level (MSL): 3 (168 Hours)

SP310ACT-L/TR Application

Used in digital communication systems, particularly where RS232 protocol is required for the interface between drivers and receivers.

SP310ACT-L/TR Features

The SP310ACT-L/TR, a 2/2 Transceiver Full RS232, operates within a supply voltage range of 4.5 V to 5.5 V, ensuring compatibility with standard logic levels. It supports a Data Rate of 240kbps, which is suitable for low-speed communication interfaces. Duplex type is full, allowing for simultaneous two-way data transmission. The device also features a receiver hysteresis of 500mV to improve noise immunity.

SP310ACT-L/TR Quality and Safety Features

Lead-Free / RoHS Compliant, making it suitable for environmentally sensitive applications. The surface mount type of mounting ensures a secure attachment to the printed circuit board and is optimal for machine assembly.

SP310ACT-L/TR Compatibility

Designed for interfacing in environments that require adherence to the RS232 protocol with a total of 2 drivers and receivers each.

SP310ACT-L/TR Datasheet PDF

For the most detailed and authoritative specifications and operational guidelines for the SP310ACT-L/TR, please download the datasheet available on our website.

Quality Distributor

IC-Components is a premium distributor of Exar Corporation products. We offer competitive pricing, expert support, and reliable supply of the SP310ACT-L/TR model. Get your quote directly from our website today to ensure you are sourcing genuine components with ease and confidence.

Frequently Asked Questions

What are the key power supply design considerations when integrating the SP310ACT-L/TR into a 5V system with noisy digital logic?
The SP310ACT-L/TR requires a stable 4.5 V to 5.5 V supply, but its RS232 line drivers generate significant transient currents during signal transitions. To prevent noise coupling into sensitive analog or digital circuits, use a dedicated low-ESR bypass capacitor (100 nF ceramic) placed as close as possible to each VCC pin, supplemented by a 10 µF bulk capacitor on the local supply rail. Avoid sharing power planes with high-speed digital logic unless properly partitioned and filtered.
Can the SP310ACT-L/TR be used in industrial environments with ambient temperatures exceeding 70°C, and what derating or cooling measures are necessary?
No, the SP310ACT-L/TR is rated for an operating temperature range of 0°C to 70°C and is not suitable for continuous operation above this limit. In industrial applications where ambient temperatures may exceed 70°C, consider using a transceiver with an extended temperature grade (e.g., SP310ECT-L/TR, if available), or implement active cooling and thermal isolation. Prolonged operation beyond the specified range may degrade reliability and violate the device’s MSL3 rating.
What are the risks of replacing a MAX3222 or MAX3232 with the SP310ACT-L/TR in an existing RS232 design, and what modifications might be required?
While the SP310ACT-L/TR offers similar functionality (2-driver/2-receiver RS232 transceiver), it lacks the integrated charge pump capacitors found in Maxim’s MAX3222/MAX3232. The SP310ACT-L/TR requires external capacitors for its internal DC-DC converter, typically four 1 µF capacitors (two for voltage doubling, two for voltage inversion). Ensure your PCB layout includes these capacitors and verify startup timing, as improper capacitor selection or placement can cause output voltage instability or failure to meet RS232 voltage levels (±5 V minimum).
How does the receiver hysteresis of 500 mV on the SP310ACT-L/TR impact noise immunity in electrically noisy environments such as motor control or factory floors?
The 500 mV receiver hysteresis improves noise immunity by preventing multiple transitions from signal bounce or induced noise near the threshold voltage. This is particularly beneficial in industrial settings with EMI from motors or relays. However, it also means the input must swing at least ±250 mV around the threshold to trigger a state change. Ensure signal integrity by minimizing trace length, using shielded cables, and avoiding routing RS232 lines parallel to high-current paths.
Is the SP310ACT-L/TR suitable for battery-powered applications requiring low standby current, and what quiescent current should be expected during inactive communication periods?
The SP310ACT-L/TR is not optimized for ultra-low-power operation. While specific quiescent current isn’t detailed in the provided parameters, typical RS232 transceivers with internal charge pumps draw several milliamps even when idle due to capacitor refresh cycles. For battery-powered designs, consider alternatives with shutdown modes (e.g., SP3222E or MAX3221), which reduce current to microamps. If using the SP310ACT-L/TR, disable unused drivers via external control if possible, though it lacks a dedicated shutdown pin.
What layout and grounding practices are critical when designing a PCB with the SP310ACT-L/TR to ensure reliable RS232 signal integrity and ESD protection?
Use a solid ground plane beneath the SP310ACT-L/TR and minimize loop area between the device, charge pump capacitors, and RS232 I/O traces. Place all four charge pump capacitors (1 µF) within 5 mm of the IC pins. Route RS232 signals away from high-speed digital lines and use series termination resistors (33–100 Ω) at the driver outputs to reduce ringing. Include TVS diodes rated for ±15 kV ESD protection on all RS232 lines, connected to the chassis or signal ground with short, low-inductance paths.
Can the SP310ACT-L/TR support data rates up to 240 kbps reliably over long cable runs (e.g., 15 meters), and what factors limit performance at maximum speed?
While the SP310ACT-L/TR supports a data rate of 240 kbps, actual performance over 15-meter cables depends on cable capacitance, termination, and environmental noise. RS232 specifications limit capacitance to 2500 pF; standard cables may exceed this at longer lengths, causing signal distortion. Use low-capacitance cables (<100 pF/m) and consider reducing the baud rate or adding slew-rate control if signal integrity degrades. The internal driver strength of the SP310ACT-L/TR is fixed, so external buffering may be needed for marginal links.
What are the implications of the MSL3 (168 Hours) rating for the SP310ACT-L/TR during high-volume manufacturing and storage?
The MSL3 rating means the SP310ACT-L/TR can be exposed to ambient conditions for up to 168 hours after removal from its moisture barrier bag before requiring baking. In high-volume production, ensure components are used within this floor life or stored in dry cabinets (<10% RH). If reflow is delayed beyond 168 hours, bake the parts at 125°C for 24 hours to prevent moisture-induced delamination or “popcorning” during solder reflow, especially in 18-SOIC packages which are more susceptible to moisture absorption.
How does the SP310ACT-L/TR compare to the SP310ECT-L/TR in terms of temperature range and long-term reliability for commercial vs. industrial applications?
The SP310ACT-L/TR is specified for 0°C to 70°C, making it suitable only for commercial indoor environments. The SP310ECT-L/TR (if available from Exar) typically extends this range to -40°C to +85°C, enabling use in industrial, automotive, or outdoor applications. For long-term reliability, the extended temperature version undergoes more rigorous qualification. Migrating from ACT to ECT requires verifying pin compatibility and supply current differences, but the footprint and functionality remain consistent.
What configuration or external components are required to ensure the SP310ACT-L/TR meets RS232 voltage levels (±5 V to ±15 V) without a dual power supply?
The SP310ACT-L/TR generates required RS232 bipolar voltages using an internal charge pump, eliminating the need for a dual supply. However, it requires four external 1 µF capacitors: two for the voltage doubler (C1, C2) and two for the inverter (C3, C4). Use X5R or X7R ceramic capacitors rated for at least 10 V. Insufficient capacitance or high ESR can result in output voltages below ±5 V, violating RS232 standards. Verify output levels under load using an oscilloscope during initial prototyping.

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