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SP3243EBCA-L Equivalent & Substitute Parts
Part Overview
The SP3243EBCA-L is a full-duplex RS232 transceiver IC manufactured by MaxLinear, Inc., configured with 3 drivers and 5 receivers in a 28-SSOP surface mount package. This component operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility for existing designs or new production requirements.
Substiute Parts
Key Parameters
| Parameter | SP3243EBCA-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS232 |
| Drivers/Receivers | 3/5 |
| Duplex | Full |
| Data Rate | 250kbps |
| Voltage Supply | 3V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Package | 28-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| Receiver Hysteresis | 300mV |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict alignment with the following core parameters:
- Protocol: RS232 (full-duplex)
- Configuration: 3 drivers / 5 receivers
- Package: 28-SSOP surface mount
- Voltage Supply: 3V ~ 5.5V
- Data Rate: 250kbps or higher
- Mounting Type: Surface mount
Substitute parts are grouped into two categories:
Direct Substitutes maintain all electrical and mechanical specifications of the SP3243EBCA-L while offering active product status and improved availability. These parts are pin-compatible and functionally equivalent.
Upgrade Substitutes extend the operating temperature range to -40°C ~ 85°C or increase data rate capability to 500kbps or 1Mbps, providing enhanced performance margins while maintaining backward compatibility with the original design envelope.
Parameter Comparison
| Part Number | Manufacturer | Drivers/Receivers | Data Rate | Voltage Supply | Operating Temp | Receiver Hysteresis | Product Status | Packaging |
|---|---|---|---|---|---|---|---|---|
| SP3243EBCA-L | MaxLinear, Inc. | 3/5 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 300mV | Obsolete | 28-SSOP |
| MAX3243ECAI+ | Analog Devices Inc./Maxim Integrated | 3/5 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP (Tube) |
| MAX3243ECAI+T | Analog Devices Inc./Maxim Integrated | 3/5 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP (CT & Digi-Reel) |
| MAX3244ECAI+ | Analog Devices Inc./Maxim Integrated | 3/5 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP (Tube) |
| MAX3244ECAI+T | Analog Devices Inc./Maxim Integrated | 3/5 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP (TR) |
| MAX3245ECAI+ | Analog Devices Inc./Maxim Integrated | 3/5 | 1Mbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP (Tube) |
| MAX3245ECAI+T | Analog Devices Inc./Maxim Integrated | 3/5 | 1Mbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP (TR) |
| TRS3243CDBR | Texas Instruments | 3/5 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500mV | Active | 28-SSOP |
| MAX3243EEAI+ | Analog Devices Inc./Maxim Integrated | 3/5 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500mV | Active | 28-SSOP (Tube) |
| MAX3243EEAI+T | Analog Devices Inc./Maxim Integrated | 3/5 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500mV | Active | 28-SSOP (CT & Digi-Reel) |
| MAX3243EIDBR | Texas Instruments | 3/5 | 500kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500mV | Active | 28-SSOP (CT & Digi-Reel) |
Engineering Selection Recommendations
For Direct Replacement (Same Operating Envelope):
Select MAX3243ECAI+, MAX3243ECAI+T, MAX3244ECAI+, MAX3244ECAI+T, or TRS3243CDBR when the design operates within the 0°C to 70°C temperature range and 250kbps data rate requirement. These parts maintain full electrical compatibility with the SP3243EBCA-L while offering active product status and ROHS3 compliance. The MAX3243 and MAX3244 variants from Analog Devices provide superior receiver hysteresis (500mV vs. 300mV), enhancing noise immunity. Packaging options include Tube, Cut Tape & Digi-Reel, and Tape & Reel configurations to match production requirements.
For Enhanced Performance (Extended Temperature or Higher Data Rate):
Select MAX3245ECAI+ or MAX3245ECAI+T for applications requiring 1Mbps data rate capability while maintaining the 0°C to 70°C operating range. These parts provide a 4x performance margin over the original specification.
Select MAX3243EEAI+, MAX3243EEAI+T, or MAX3243EIDBR for designs requiring extended temperature operation from -40°C to 85°C. The MAX3243EIDBR additionally supports 500kbps data rate, doubling the original specification while extending temperature range.
All recommended substitutes carry ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring long-term reliability and supply chain stability.
Frequently Asked Questions (FAQ)
Q: Can MAX3245ECAI+ or MAX3245ECAI+T be used as direct replacements for SP3243EBCA-L?
A: Yes. The MAX3245 variants maintain identical pin configuration, voltage supply range (3V ~ 5.5V), operating temperature (0°C ~ 70°C), and 3/5 driver/receiver configuration. The 1Mbps data rate exceeds the original 250kbps specification, providing backward compatibility with no design modifications required.
Q: What is the difference between MAX3243ECAI+ and MAX3243ECAI+T?
A: Both parts are electrically identical. MAX3243ECAI+ is supplied in Tube packaging, while MAX3243ECAI+T is supplied in Cut Tape & Digi-Reel format. Selection depends on production volume and assembly equipment compatibility.
Q: Are the MAX3243EEAI+ variants suitable for industrial temperature applications?
A: The MAX3243EEAI+ and MAX3243EEAI+T extend the operating temperature range to -40°C ~ 85°C, making them suitable for industrial and automotive environments. They maintain 250kbps data rate and all other electrical specifications of the SP3243EBCA-L.
Q: How does receiver hysteresis affect substitution compatibility?
A: The SP3243EBCA-L specifies 300mV receiver hysteresis, while all substitute parts provide 500mV hysteresis. Higher hysteresis improves noise immunity and signal integrity, making these substitutes functionally superior for the same application without requiring design changes.
Q: Is TRS3243CDBR from Texas Instruments a viable alternative to Maxim/Analog Devices parts?
A: Yes. TRS3243CDBR maintains identical electrical specifications (3/5 configuration, 250kbps, 3V ~ 5.5V, 0°C ~ 70°C) and 28-SSOP package. It provides an alternative source for supply chain diversification while maintaining full compatibility.
Q: What packaging options are available for high-volume production?
A: For automated assembly, Tape & Reel (TR) and Cut Tape & Digi-Reel (CT) options are available: MAX3243ECAI+T, MAX3244ECAI+T, MAX3245ECAI+T, MAX3243EEAI+T, and MAX3243EIDBR. Tube packaging (MAX3243ECAI+, MAX3244ECAI+, MAX3245ECAI+, MAX3243EEAI+) is suitable for lower-volume or manual assembly operations.
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