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SP3221ECY-L Equivalent & Substitute Parts
Part Overview
The SP3221ECY-L is a 1/1 RS232 transceiver IC manufactured by MaxLinear, Inc., housed in a 16-TSSOP surface mount package. This interface 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, making equivalent and substitute parts necessary for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SP3221ECY-L |
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 1/1 |
| Receiver Hysteresis | 300 mV |
| Data Rate | 250kbps |
| Voltage - Supply | 3V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the SP3221ECY-L is determined by the following critical parameters:
- Protocol Compatibility: RS232 transceiver function
- Channel Configuration: 1/1 driver/receiver configuration
- Package Type: 16-TSSOP surface mount package
- Supply Voltage Range: 3V to 5.5V operation
- Data Rate: 250kbps minimum capability
- Receiver Hysteresis: 300mV or 500mV acceptable
- Operating Temperature Range: 0°C to 70°C minimum
- Electrical Characteristics: Pin-compatible interface
Substitute parts are grouped into three categories: direct equivalents (matching all primary specifications), upgrades (enhanced temperature range or performance), and manufacturer-recommended alternatives (functionally equivalent with different sourcing).
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Receiver Hysteresis | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| SP3221ECY-L | MaxLinear, Inc. | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 300 mV | 16-TSSOP | Obsolete | N/A |
| SN75C3221PW | Texas Instruments | RS232 | 1/1 | 1Mbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 16-TSSOP | Obsolete | ROHS3 Compliant |
| SP3221EEY-L/TR | MaxLinear, Inc. | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 300 mV | 16-TSSOP | Active | RoHS Compliant |
| TRS3221ECPWR | Texas Instruments | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 16-TSSOP | Active | ROHS3 Compliant |
| TRS3221EIPW | Texas Instruments | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500 mV | 16-TSSOP | Obsolete | ROHS3 Compliant |
| TRS3221EIPWR | Texas Instruments | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500 mV | 16-TSSOP | Active | ROHS3 Compliant |
| TRS3221IPW | Texas Instruments | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500 mV | 16-TSSOP | Obsolete | ROHS3 Compliant |
| TRS3221IPWR | Texas Instruments | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | -40°C ~ 85°C | 500 mV | 16-TSSOP | Active | ROHS3 Compliant |
| ICL3221CVZ | Intersil | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 300 mV | 16-TSSOP | Active | ROHS3 Compliant |
| ICL3221CVZ-T | Renesas Electronics Corporation | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 300 mV | 16-TSSOP | Active | ROHS3 Compliant |
| ICL3221ECVZ | Renesas Electronics Corporation | RS232 | 1/1 | 250kbps | 3V ~ 5.5V | 0°C ~ 70°C | 500 mV | 16-TSSOP | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalent (Preferred for Obsolete Part Replacement):
SP3221EEY-L/TR is the direct equivalent from MaxLinear, Inc., matching all electrical specifications of the SP3221ECY-L while offering an extended operating temperature range (-40°C to 85°C) and active product status. This part carries RoHS compliance and is available in Tape & Reel packaging with substantial inventory.
Active Alternatives with Matching Specifications:
ICL3221CVZ-T (Renesas Electronics Corporation) and ICL3221CVZ (Intersil) provide functionally equivalent RS232 transceiver performance with identical receiver hysteresis (300mV) and data rate (250kbps). Both are active products with ROHS3 compliance and 16-TSSOP packaging. These parts are manufacturer-recommended alternatives suitable for new designs and legacy system support.
Texas Instruments Options:
TRS3221ECPWR and TRS3221EIPWR are active Texas Instruments alternatives. TRS3221ECPWR maintains the original 0°C to 70°C temperature range, while TRS3221EIPWR extends operation to -40°C to 85°C. Both feature 500mV receiver hysteresis and ROHS3 compliance. TRS3221EIPWR is recommended for applications requiring extended temperature operation.
Compliance Considerations:
All recommended substitute parts carry ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. The SP3221ECY-L lacks documented RoHS status; substitution with compliant alternatives is advised for new production.
Frequently Asked Questions (FAQ)
Q: Can I directly replace SP3221ECY-L with SP3221EEY-L/TR?
A: Yes. SP3221EEY-L/TR is the direct MaxLinear equivalent with identical electrical specifications (1/1 RS232 transceiver, 250kbps, 3V-5.5V supply, 300mV hysteresis, 16-TSSOP package). The primary difference is extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and active product status.
Q: What is the difference between ICL3221CVZ and ICL3221CVZ-T?
A: Both are functionally identical RS232 transceivers from Renesas Electronics Corporation with matching electrical specifications. ICL3221CVZ-T is supplied in Cut Tape & Digi-Reel packaging with MSL 3 (168 Hours), while ICL3221CVZ is supplied in Bulk packaging. Selection depends on packaging and moisture handling requirements.
Q: Why do some substitutes have 500mV receiver hysteresis instead of 300mV?
A: Receiver hysteresis affects noise immunity and signal detection thresholds. Parts with 500mV hysteresis (SN75C3221PW, TRS3221 series, ICL3221ECVZ) provide enhanced noise rejection compared to the original 300mV specification. Both values are compatible with RS232 protocol requirements and do not prevent substitution.
Q: Are all substitute parts RoHS compliant?
A: All recommended substitute parts carry ROHS3 compliance certification. The original SP3221ECY-L does not document RoHS status. Substitution with compliant alternatives is necessary for applications subject to RoHS regulations.
Q: Can I use TRS3221EIPWR in place of SP3221ECY-L?
A: Yes. TRS3221EIPWR is an active Texas Instruments alternative with identical RS232 protocol, 1/1 channel configuration, 250kbps data rate, and 3V-5.5V supply range. It operates across -40°C to 85°C (extended range) and carries ROHS3 compliance. Pin compatibility and 16-TSSOP packaging ensure direct substitution.
Q: What packaging options are available for substitutes?
A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape & Digi-Reel (CT), Tube, and Bulk. Selection depends on production volume and handling requirements. SP3221EEY-L/TR and TRS3221EIPWR are recommended for high-volume applications due to standard packaging availability.
Q: Is the higher data rate of SN75C3221PW (1Mbps vs 250kbps) a concern?
A: No. Higher data rate capability is backward compatible with 250kbps operation. SN75C3221PW can operate at the original 250kbps specification without performance degradation. The higher rating provides design margin and future upgrade potential.
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