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SP211EHEA-L RS232 Transceiver Equivalent & Substitute Parts
Part Overview
The SP211EHEA-L is a full-duplex RS232 transceiver manufactured by MaxLinear, Inc., featuring 4 drivers and 5 receivers in a 28-SSOP package. This component is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent parts for ongoing design support and procurement. The part operates across the industrial temperature range of -40°C to 85°C with a 230 kbps data rate capability and 4.5V to 5.5V supply voltage range.
Substiute Parts
Key Parameters
| Parameter | SP211EHEA-L |
|---|---|
| Manufacturer | MaxLinear, Inc. |
| Type | Transceiver |
| Protocol | RS232 |
| Drivers/Receivers | 4/5 |
| Duplex | Full |
| Data Rate | 230 kbps |
| Supply Voltage | 4.5V – 5.5V |
| Operating Temperature | -40°C to 85°C |
| Package | 28-SSOP (0.209", 5.30mm Width) |
| Receiver Hysteresis | 500 mV |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| MSL Rating | 2 (1 Year) |
Substitute Part Grouping Explanation
Substitution eligibility for the SP211EHEA-L is determined by the following critical parameters:
- Protocol: RS232 (mandatory match)
- Drivers/Receivers: 4/5 configuration (mandatory match)
- Duplex: Full (mandatory match)
- Supply Voltage: 4.5V – 5.5V range (mandatory match)
- Operating Temperature: -40°C to 85°C minimum (mandatory match)
- Package: 28-SSOP or 28-TSSOP (pin-compatible packages)
- Mounting Type: Surface Mount (mandatory match)
The substitute parts identified are manufactured by Analog Devices Inc. and maintain functional equivalence across these core parameters. All substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain continuity.
Parameter Comparison
| Part Number | Manufacturer | Drivers/Receivers | Data Rate | Supply Voltage | Operating Temp | Package | Receiver Hysteresis | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SP211EHEA-L | MaxLinear, Inc. | 4/5 | 230 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-SSOP | 500 mV | Discontinued | RoHS Compliant |
| ADM211ARSZ | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
| ADM211ARSZ-REEL | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
| ADM211EARSZ | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
| ADM211EARSZ-REEL | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
| ADM211EARUZ | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-TSSOP | 650 mV | Active | ROHS3 Compliant |
| ADM211EARUZ-REEL | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-TSSOP | 650 mV | Active | ROHS3 Compliant |
| ADM211EARUZ-REEL7 | Analog Devices Inc. | 4/5 | 120 kbps | 4.5V – 5.5V | -40°C to 85°C | 28-TSSOP | 650 mV | Active | ROHS3 Compliant |
| ADM241LARSZ | Analog Devices Inc. | 4/5 | 120 kbps | 4.75V – 5.25V | -40°C to 85°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
| ADM241LARSZ-REEL | Analog Devices Inc. | 4/5 | 120 kbps | 4.75V – 5.25V | -40°C to 85°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
| ADM241LJRSZ | Analog Devices Inc. | 4/5 | 120 kbps | 4.75V – 5.25V | 0°C to 70°C | 28-SSOP | 650 mV | Active | ROHS3 Compliant |
Engineering Selection Recommendations
All identified substitute parts are manufactured by Analog Devices Inc. and maintain active product status with ROHS3 compliance certification, ensuring regulatory alignment and supply chain stability. The ADM211 and ADM241 series provide direct functional equivalence to the SP211EHEA-L across the mandatory RS232 protocol, 4/5 driver-receiver configuration, full-duplex operation, and surface-mount 28-pin packaging.
For applications requiring the original -40°C to 85°C operating temperature range with 4.5V to 5.5V supply voltage, the ADM211ARSZ, ADM211EARSZ, and related variants in 28-SSOP packaging provide direct substitution. The ADM211EARUZ series offers the same electrical specifications in a 28-TSSOP package (0.173" width versus 0.209"), which is suitable for space-constrained layouts while maintaining pin compatibility.
The ADM241LARSZ series operates within a narrower supply voltage window (4.75V – 5.25V) and is recommended only for applications with regulated power supplies within this specification. The ADM241LJRSZ variant operates across a reduced temperature range (0°C to 70°C) and is suitable for commercial-grade applications only.
Frequently Asked Questions (FAQ)
Q: Can ADM211EARUZ (28-TSSOP) be used as a direct replacement for SP211EHEA-L (28-SSOP)?
A: The ADM211EARUZ maintains electrical equivalence across all critical parameters: RS232 protocol, 4/5 drivers/receivers, full-duplex operation, -40°C to 85°C temperature range, and 4.5V – 5.5V supply voltage. The 28-TSSOP package is physically smaller (0.173" width) than 28-SSOP (0.209" width) but maintains the same pin count and pitch. PCB layout modification is required; direct socket substitution is not possible.
Q: What is the difference between ADM211ARSZ and ADM211EARSZ?
A: Both parts are functionally equivalent RS232 transceivers with identical electrical specifications. The designation difference reflects internal temperature grading or manufacturing process variations within Analog Devices product lines. Both are rated for -40°C to 85°C operation and are suitable for industrial applications.
Q: Why do some substitute parts have lower data rates (120 kbps versus 230 kbps)?
A: The SP211EHEA-L specifies 230 kbps maximum data rate, while Analog Devices ADM211 and ADM241 series specify 120 kbps. Both ratings exceed typical RS232 communication speeds (9.6 kbps to 115.2 kbps). The lower specification does not indicate reduced performance for standard RS232 applications; it reflects conservative manufacturer rating practices. Applications requiring data rates above 120 kbps should be evaluated against actual system requirements.
Q: What is the significance of the -REEL suffix in part numbers?
A: The -REEL suffix indicates tape-and-reel packaging for automated assembly processes. ADM211ARSZ-REEL and ADM211EARSZ-REEL are electrically identical to their tube-packaged counterparts (ADM211ARSZ and ADM211EARSZ) and differ only in packaging format. Selection depends on procurement and assembly requirements.
Q: Is ADM241LJRSZ suitable for industrial temperature range applications?
A: No. The ADM241LJRSZ operates across 0°C to 70°C, which does not meet the SP211EHEA-L industrial specification of -40°C to 85°C. This variant is restricted to commercial-grade applications within the narrower temperature window.
Q: Are all substitute parts RoHS compliant?
A: Yes. All identified Analog Devices substitute parts carry ROHS3 compliance certification, meeting current regulatory requirements for hazardous substance restrictions.
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