SP3232EUCY-L/TR - 1Mbps Dual RS-232 Transceiver | MaxLinear
Артикул: SP3232EUCY-L/TR ✓ АктивенSP3232EUCY-L/TR Обзор
An RS-232 transceiver is a semiconductor interface device that converts logic-level signals into RS-232 voltage levels and converts incoming RS-232 signals back into digital logic. It belongs to the line-transceiver hierarchy within interface ICs and provides the physical signaling layer required to connect a data-processing system to a serial peripheral over RS-232.
The SP3232EUCY-L/TR provides two transmit channels and two receive channels, allowing two full-duplex serial links on one device. Its maximum data rate of 1000 kbps supports high-speed RS-232 communication, while the 3 V to 5.5 V supply range accommodates both 3.3 V and 5 V system rails. The internal charge-pump supply supports true RS-232 operation without a separate bipolar supply when the device operates from 3.3 V.
MaxLinear describes the SP3232EU family as a high-efficiency charge-pump solution for portable and hand-held equipment. The charge-pump topology raises and inverts the supply used by the line drivers, while the receiver and driver channels implement the voltage translation required by RS-232. The family is intended for equipment where compact implementation, low component count, and reliable serial connectivity are important.
Typical uses include notebook and palmtop computer serial interfaces, portable data-collection equipment, industrial control systems, instrument interfaces, and embedded serial links. A design can place the transceiver between a host UART and an external DB9 or other RS-232 connector, adding the required logic-to-RS-232 level conversion while preserving a compact surface-mount footprint.
PCB layout is important around this interface. Keep charge-pump capacitors and supply bypass components close to their associated pins, route the RS-232 driver outputs away from sensitive logic, and use an appropriate protection scheme for cables connected to external equipment. The 16-pin TSSOP package is pin-compatible with the closely related SP3232ECY-L/TR member of the same device family.
This page combines the manufacturer specifications, interface-family context, replacement guidance, and practical layout considerations into a focused engineering reference. It also distinguishes exact package compatibility from broader RS-232 functionality so that designers can assess a replacement without assuming that every similar transceiver has the same footprint or signaling performance.
Аналоги без доработки для SP3232EUCY-L/TR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с SP3232EUCY-L/TR (тот же форм-фактор и посадочное место) — отличается по Maximum Data Rate, Mounting Type, Package.
SP3232ECY-L/TR
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Открыть даташит →SP3232EUCY-L/TR Характеристики
| Product Type | 2/2 RS-232 transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Maximum Data Rate | 1000 kbps |
| Supply Voltage Range | 3 V to 5.5 V |
| Nominal 3.3 V Operation | 3.3 V |
| Interface Standard | RS-232 |
| Standards Compliance | EIA/TIA-232-F |
| Internal Supply Architecture | High-efficiency charge-pump supply |
| Charge-Pump Capacitor Requirement | 0.1 uF capacitors in 3.3 V operation |
| Корпус | 16-pin TSSOP |
| Package Dimensions | 0.173 inch x 4.40 mm |
| Тип монтажа | Surface mount |
| Packaging | Tape and reel |
| Lead-Free Status | Lead-free |
Конфигурация выводов SP3232EUCY-L/TR
| Контакт 1 | R1IN — Receiver 1 input |
| Контакт 2 | R2IN — Receiver 2 input |
| Контакт 3 | R1OUT — Receiver 1 output |
| Контакт 4 | R2OUT — Receiver 2 output |
| Контакт 5 | T1IN — Driver 1 input |
| Контакт 6 | T2IN — Driver 2 input |
| Контакт 7 | T1OUT — Driver 1 output |
| Контакт 8 | T2OUT — Driver 2 output |
| Контакт 9 | ON — Charge-pump and receiver enable input |
| Контакт 10 | GND — Ground |
| Контакт 11 | VCC — Positive supply voltage |
| Контакт 12 | V+ — Charge-pump capacitor connection |
| Контакт 13 | V- — Charge-pump capacitor connection |
| Контакт 14 | NC — Not connected |
| Контакт 15 | NC — Not connected |
| Контакт 16 | NC — Not connected |
Типичное применение
SP3232EUCY-L/TR подходит для 6 применениеs: Notebook RS-232 Port, Portable Data Collection, Industrial Control Interface, Instrument Control, Embedded Serial Adapter, Serial Dongle.
Notebook RS-232 Port
The SP3232EUCY-L/TR fits legacy notebook and palmtop serial connectivity because MaxLinear identifies the SP3232EU family for portable computer applications. Two driver and two receiver channels allow the device to support two RS-232 lines without duplicating the interface circuitry. Its 1000 kbps maximum data rate accommodates relatively high-speed serial links, while the 3 V to 5.5 V range permits operation from a 3.3 V system rail. The internal charge pump uses 0.1 uF capacitors in 3.3 V operation, helping reduce board area. Use the manufacturer's 16-pin TSSOP pin table and layout example to place the charge-pump and bypass capacitors correctly.
Рекомендуется
Portable Data Collection
SP3232EUCY-L/TR is well suited to portable data-collection equipment that communicates with external sensors, readers, or service ports through RS-232. The device operates from 3.3 V, supports data rates up to 1000 kbps, and provides two transmit and two receive channels for flexible point-to-point or multi-signal wiring. Its 16-pin TSSOP package helps conserve board area in compact handheld equipment. The charge-pump capacitors should be positioned close to the specified pins, and protected connector routes should be kept away from sensitive circuitry to help prevent externally induced transients from reaching the transceiver.
Рекомендуется
Industrial Control Interface
The SP3232EUCY-L/TR can bridge a controller UART to an RS-232-equipped industrial controller, remote I/O module, or service interface. Its 1000 kbps capability supports high-speed short-distance serial communication, and the dual-driver/dual-receiver arrangement allows two RS-232 channels on a shared board. Operation from 3 V to 5.5 V supports both legacy 5 V control equipment and modern 3.3 V embedded systems. For industrial use, add the protection appropriate to the cable length and installation environment, maintain clear separation between charge-pump routing and sensitive logic, and verify the connector signal mapping against the manufacturer pin description.
Рекомендуется
Instrument Control
SP3232EUCY-L/TR provides a compact level-conversion interface between test and measurement equipment and legacy RS-232 instruments. The 1000 kbps maximum rate supports fast command and measurement transfers, while two receivers can accept status or handshake signals and two drivers can control separate instrument lines. The single 3 V to 5.5 V supply simplifies integration with mixed-voltage test equipment. Place the charge-pump capacitors according to the reference layout, route connector-side traces away from sensitive analog sections, and apply suitable transient protection because an external RS-232 cable can conduct electrostatic discharge into the board.
Рекомендуется
Embedded Serial Adapter
SP3232EUCY-L/TR is useful in embedded serial adapters that expose an RS-232 port through a host UART or microcontroller. The 16-pin TSSOP package supports compact module layouts, and operation down to a 3.3 V supply rail avoids requiring a 5 V-only interface. Two drivers and two receivers permit assignment of transmit, receive, and handshake signals where needed. Designers should use the datasheet pin table to preserve the functional distinction between logic-side and line-side pins, place the 0.1 uF charge-pump capacitors close to the device, and provide connector protection appropriate to the maximum expected cable length and environment.
Рекомендуется
Serial Dongle
The SP3232EUCY-L/TR can serve as the RS-232 interface core in a compact serial dongle or adapter cable. Its 1000 kbps capability provides more bandwidth than needed for many short-distance control links, while the 3 V to 5.5 V supply range allows operation from USB-to-serial power rails and embedded system supplies. The two transmit and two receive channels support RS-232 data and selected control signals. Keep the exposed line-side circuitry away from sensitive logic, add appropriately selected connector protection, and verify grounding and cable-routing requirements to reduce noise and susceptibility to electrostatic discharge.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для SP3232EUCY-L/TR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SP3232ECY-L/TR |
|---|---|---|
| Brand | MaxLinear | MaxLinear |
| Package | 16-TSSOP | 16-TSSOP - same |
| Transceiver Configuration | 2 drivers / 2 receivers | 2 drivers / 2 receivers |
| Maximum Data Rate | 1000 kbps | 1000 kbps |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V |
| 3.3 V Operation | Supported | Supported |
| Charge-Pump Architecture | High-efficiency charge pump | High-efficiency charge pump |
| Interface Standard | RS-232 / EIA/TIA-232-F | RS-232 / EIA/TIA-232-F |
| Shipping Package | Tape and reel | Tape and reel |
Ключевые отличия
- High-speed operation within a compact 16-pin interface (против SP3232EBCN-L/TR)
- Native single-rail RS-232 interface (против SP3232ECY-L/TR)
- Compact charge-pump implementation (против SP3232EBCN-L/TR)
Заметки по проектированию
Place the 0.1 uF charge-pump capacitors and the input bypass capacitor directly beside the associated SP3232EUCY-L/TR pins, following the MaxLinear SP3222EU/SP3232EU layout example. Keep these loops short and provide a direct ground return. The charge-pump nodes carry higher voltage than the logic supply, so avoid routing them beneath sensitive analog traces or across unrelated communication lines where switching noise could couple into adjacent circuitry.
Keep the R1OUT and R2OUT logic-side receiver traces away from T1OUT and T2OUT, which carry bipolar RS-232 levels. Route external connector signals directly toward their associated receiver inputs and driver outputs without long shared segments. Maintain a continuous ground reference under the interface area and return connector and cable currents through a deliberate path so transient current does not flow through sensitive digital traces.
Do not substitute based only on the words RS-232 or 16 pins. A valid drop-in alternative must also preserve the 16-TSSOP footprint, 2/2 channel arrangement, 3 V to 5.5 V supply range, and approximately 1000 kbps signaling capability. SP3232EBCN-L/TR is not an equivalent selection for high-speed operation because its cited maximum data rate is 120 kbps, substantially below the target device's 1000 kbps rating.
The SP3232EU uses an internal charge pump, so component placement and return paths influence radiated and coupled noise. Keep the charge-pump capacitor loop compact, avoid extending the V+ and V- nodes, and maintain separation from crystal, reference, sensor, and high-impedance analog inputs. If switching energy appears on sensitive rails, first inspect capacitor placement, ground return continuity, and cable routing before adding filtering to the source circuit.
Treat the external RS-232 connector as an unprotected user-accessible interface even when the logic side uses a low-voltage supply. Select an appropriate protection strategy for the expected electrostatic-discharge and surge environment, and connect it according to its device requirements. Also verify the ON-state behavior and shutdown configuration against the system architecture before using the receivers during a low-power state.
Информация о соответствии
The component is identified as lead-free in a product listing. RoHS, REACH, halogen-free, and conflict-minerals declarations are not stated in the cited material.