XR32220EBEVB - XR32220 RS-232 Evaluation Board | MaxLinear
N.º da peça: XR32220EBEVB ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $78 | $78,00 |
| 5 | $73.5 | $367,50 |
| 10 | $70.2 | $702,00 |
| 25 | $66.5 | $1.662,50 |
| 50 | $63 | $3.150,00 |
XR32220EBEVB Visão geral
What is an RS-232 transceiver? An RS-232 transceiver is an interface IC that converts logic-level UART signals (typically 0V to VLOGIC) to and from the higher-voltage +/-5V to +/-15V signaling defined by the EIA/TIA-232 standard, which historically connected DTE such as PCs to DCE such as modems. The XR32220 integrates a high-efficiency switched-capacitor charge pump plus on-chip drivers and receivers in a single SSOP-20 package, replacing a discrete RS-232 implementation with one part. It belongs to the larger serial-transceiver / line-driver family within interface ICs, sitting below UART controllers and above discrete level shifters in the typical BOM.
Key specifications of the target XR32221 die include 2 drivers and 2 receivers, an integrated charge pump that runs from a single 3.0V to 5.5V supply, a VL pin accepting 1.65V to VCC logic levels, and data-rate options of 250 kbps (EBER) or 1 Mbps (EUER). The EBEVB board demonstrates the slower, lower-EMI variant. Per the MaxLinear datasheet, supply current at no load is roughly 6 mA and drivers maintain ±5V minimum output swing into 3 kΩ loads, while receivers accept ±25V inputs.
The architecture is a BiCMOS charge-pump plus driver-and-receiver design; the charge pump generates V+ and V- rails from VCC using four small 0.1 µF flying and reservoir capacitors. EBER-mode slew-rate limiting reduces high-frequency harmonics by roughly a factor of four compared with the EUER high-speed variant, making it the preferred choice for cables longer than a few meters or noisy environments.
Typical applications for the XR32220 die include portable and hand-held equipment such as notebook and palmtop computers, point-of-sale (POS) terminals, industrial HMI panels, battery-powered data loggers, and any embedded system that needs a single-supply RS-232 port with a low-voltage host MCU. The EBEVB evaluation board lets hardware engineers prototype the link before committing to PCB layout.
A key design consideration when using this EVM is to populate the four charge-pump capacitors with low-ESR ceramic types rated for at least 16V, keep the capacitor loop short, and observe the VL range so the host MCU is not exposed to 5V on its I/O. For high-speed variants above 250 kbps, switch to the XR32220EUER die and a corresponding UEVB board.
This page synthesizes verified distributor inventory, parametric drop-in IC alternatives, and practical PCB-level design guidance that is not duplicated in the manufacturer datasheet.
Alternativas drop-in para XR32220EBEVB — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
XR32220EUER-L/TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
XR32220EBER-L/TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
XR32220EBER
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
XR32220EUER
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
XR32220EBEVB Especificações
| Product Type | Evaluation / Demonstration Board |
| Target Device | XR32220 (XR32220EBER die) |
| Function Supported | 2-Driver / 2-Receiver RS-232 Transceiver |
| Logic Interface Voltage (VL) | 1.65 V to VCC |
| Supply Voltage (VCC) | 3.0 V to 5.5 V |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Data Rate (EBER variant) | 250 kbps (slew-rate limited) |
| Data Rate (EUER variant, not on this EVM) | 1 Mbps |
| Driver Output Swing | +/-5 V min into 3 kΩ load |
| Receiver Input Range | +/-25 V |
| Faixa de temperatura de operação | -40 °C to +85 °C |
| PCB Layers | 2 |
| Charge Pump Capacitors Required | 4 x 0.1 µF (flying + reservoir) |
| Compliance | RoHS compliant (per MaxLinear datasheet) |
Guia de Configuração de Pinos do XR32220EBEVB standard
Configuração de pinos para XR32220EBEVB (pacote standard). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para XR32220EBEVB.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
XR32220EBEVB é adequado para 6 aplicaçãos: Portable Data Loggers and Handheld Instruments, Point-of-Sale (POS) Terminals and Receipt Printers, Industrial HMI Panels and Serial Port Servers, Embedded System Debug and Console Ports, Medical Monitoring Equipment with Serial Outputs, Legacy Modem Replacement and Industrial Gateways.
Portable Data Loggers and Handheld Instruments
The XR32220EBER die (populated on the XR32220EBEVB) is optimized for portable and hand-held equipment such as notebook, palmtop, and battery-powered measurement instruments. Its 1.65V VL logic interface allows direct connection to 1.8V Cortex-M0, RISC-V, or low-power MCUs without level shifters, while the integrated charge pump runs from a single 3.0V to 5.5V supply so only one battery rail is needed. The EBER's 250 kbps slew-rate-limited drivers cut EMI by approximately 4x compared with the high-speed EUER variant, which matters in battery-powered plastic-enclosure designs where radiated emissions can otherwise fail FCC/CE limits.
Recomendado
Point-of-Sale (POS) Terminals and Receipt Printers
The XR32220EBER is well suited to POS terminals that must communicate with legacy serial peripherals such as receipt printers, barcode scanners, and cash drawers over RS-232 cables that can exceed 5 m. Its +/-25V receiver input range tolerates ground-shift noise typical of long cable runs in retail environments, and the EBER's 250 kbps slew-rate-limited outputs reduce crosstalk when multiple RS-232 ports share a tight PCB. The integrated charge pump eliminates the +/-12V supply rails required by older RS-232 designs, simplifying the POS power architecture to a single 3.3V or 5V rail.
Recomendado
Industrial HMI Panels and Serial Port Servers
Industrial HMI panels and serial-port servers use the XR32220EBER to add EIA/TIA-232 links to PLCs, drives, and instrumentation in factory automation. The -40°C to +85°C operating range covers most factory-floor environments, and the 3.0V to 5.5V VCC range allows operation directly from a regulated 24V-to-5V or 12V-to-5V industrial bus. The EBER's 250 kbps slew rate keeps radiated emissions within EN 61000-6-4 industrial limits, even when the panel chassis is unshielded plastic. The integrated charge pump reduces BOM count versus discrete RS-232 implementations by approximately 8 external capacitors.
Recomendado
Embedded System Debug and Console Ports
The XR32220EBER is widely used as a UART-to-RS-232 converter for embedded-system debug consoles, boot-loader ports, and field-service interfaces. The EBER variant's 250 kbps is more than adequate for console I/O (typically 115200 baud), and the 1.65V VL interface lets a 1.8V SoC drive the RS-232 port directly. The XR32220EBEVB evaluation board accelerates prototyping by providing a known-good RS-232 link with DB9 connector and charge-pump capacitors already placed, letting firmware engineers validate console traffic within hours instead of days.
Recomendado
Medical Monitoring Equipment with Serial Outputs
Medical monitoring and diagnostic equipment often expose RS-232 ports to interface with hospital information systems and bedside monitors. The XR32220EBER's +/-5V minimum driver swing into 3 kΩ loads and +/-25V receiver input range ensure compliance with the EIA/TIA-232 specification across the full medical-cable length. The 1.65V VL interface supports modern low-power medical MCUs, and the EBER's 250 kbps slew-rate-limited outputs reduce EMI in EMI-sensitive patient-monitoring environments. The integrated charge pump reduces PCB area, which is valuable in compact bedside monitors.
Recomendado
Legacy Modem Replacement and Industrial Gateways
Legacy industrial gateways and modem-replacement designs continue to use RS-232 to talk to existing SCADA, telemetry, and instrumentation equipment. The XR32220EBER delivers full EIA/TIA-232 compliance while running from a single 3.0V to 5.5V supply, simplifying replacement of older 5V-only RS-232 boards. Its 2-driver/2-receiver topology supports the standard TX/RX plus RTS/CTS handshake lines, and the EBER's 250 kbps is sufficient for typical SCADA polling rates below 115200 baud. The XR32220EBEVB evaluation board lets gateway designers verify RS-232 link integrity before committing to PCB layout.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para XR32220EBEVB — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | XR32220EUER-L/TR | XR32220EBER-L/TR | XR32220EBER | XR32220EUER | SP3232EBCN-L |
|---|---|---|---|---|---|---|
| Package | XR32220EBEVB (EVM, 2-layer PCB) | SSOP-20 (same die package) | SSOP-20 (same die package) | SSOP-20 (same die package) | SSOP-20 (same die package) | SSOP-16 (different footprint) |
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear | MaxLinear |
| Function | RS-232 EVM (2-D/2-R, EBER die) | RS-232 transceiver (2-D/2-R, EUER die) | RS-232 transceiver (2-D/2-R, EBER die) | RS-232 transceiver (2-D/2-R, EBER die) | RS-232 transceiver (2-D/2-R, EUER die) | RS-232 transceiver (2-D/2-R) |
| Data Rate | 250 kbps (EBER, slew-rate limited) | 1 Mbps (EUER, high speed) | 250 kbps | 250 kbps | 1 Mbps | 250 kbps |
| VL Logic Interface | 1.65 V to VCC | 1.65 V to VCC | 1.65 V to VCC | 1.65 V to VCC | 1.65 V to VCC | 2.0 V to VCC |
| Supply Voltage (VCC) | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Principais diferenciais
- 1.65 V VL minimum enables direct 1.8 V MCU connection without level shifters (vs SP3232EBCN-L)
- Slew-rate-limited EBER die reduces EMI by ~4x vs high-speed EUER (vs XR32220EUER)
- Integrated charge pump eliminates +/-12 V supply requirement (vs MAX3232EIDR (TI))
Notas de projeto
The XR32220EBEVB requires four 0.1 µF low-ESR ceramic capacitors for the on-chip charge pump (two flying on C1+/C1-/C2+/C2- and two reservoir on V+/V-). Use X7R or X5R dielectric rated for at least 16 V, and place each capacitor within 5 mm of its pin to minimize loop inductance. A 0.1 µF ceramic bypass on VCC plus a 10 µF tantalum bulk capacitor is recommended per the MaxLinear reference design to suppress supply droop during driver switching.
The EBER die's slew-rate-limited drivers reduce EMI by approximately a factor of 4 compared with the EUER high-speed die. To preserve this benefit, keep the RS-232 trace impedance uncontrolled (typical 50 Ω single-ended is acceptable for short cables), but place the DB9 connector shield to chassis ground through a low-inductance bond, not signal ground. Use a ferrite bead on V+ and V- rails if the design must pass EN 55022 Class B radiated emissions.
Do not connect the VL logic interface pin to voltages below 1.65 V or above VCC; the logic interface clamps and may draw excessive current. Do not omit the charge-pump capacitors - the charge pump will not regulate correctly and RS-232 driver swing will collapse to under +/-3 V. Do not apply voltages outside +/-25 V on receiver inputs; doing so can damage the on-chip ESD structures. Finally, ensure that the host MCU UART is configured for the EBER's 250 kbps maximum or the data will be corrupted at higher baud rates.
Informações de conformidade
RoHS compliance and lead-free status are confirmed in the MaxLinear XR32220 datasheet (document revision 1e, dated 2020-08-03). REACH, AEC-Q100, halogen-free, and conflict-minerals status are not explicitly stated in the verified data and are marked unknown. The EBEVB is an evaluation board, not an automotive-grade component.
