SP3232EHEY-L/TR - 460 kbps RS-232 Transceiver | MaxLinear
MPN： SP3232EHEY-L/TR ✓ 啟用中SP3232EHEY-L/TR 概覽
An RS-232 transceiver is a semiconductor interface device that bridges a digital logic system and a serial communications link using RS-232 voltage signaling. Each transceiver channel combines a line driver, which converts logic signals into RS-232 output levels, with a receiver, which converts incoming RS-232 signals into logic-compatible levels. In the broader hierarchy, the SP3232EHEY-L/TR belongs to the interface-controller class, specifically the RS-232 driver/receiver and transceiver family within integrated interface ICs.
The SP3232E series supports operation from a single 3.3 V supply while producing the positive and negative voltage levels required for conventional RS-232 communication. According to the MaxLinear manufacturer datasheet, its charge-pump supply requires only 0.1 µF capacitors in 3.3 V operation. The 2/2 driver and receiver arrangement provides two independent communications channels, while the 460 kbps maximum signaling rate supports common point-to-point serial links, embedded equipment, and legacy peripheral interfaces.
The enhanced protection is particularly valuable in industrial and instrumentation environments where cables can be longer and more exposed than in a protected desktop enclosure. The device is specified for true EIA/TIA-232-F operation from a supply as high as 5.5 V and can interoperate with RS-232 equipment powered from a source as low as 2.7 V. Its internal charge-pump architecture reduces the number of external bulk capacitors while preserving bipolar RS-232 output levels.
Typical applications include data acquisition equipment, industrial controllers, portable test instruments, point-of-sale terminals, and embedded systems that retain an RS-232 service or communications port. The device can also pair with a host UART or microcontroller to provide a standards-compliant physical interface for legacy equipment. Designers should treat the cable, ground reference, connector, and logic levels as parts of the complete communication path rather than relying only on the IC specification.
A key design consideration is ensuring that the host-side interface levels match the selected UART and that unused driver or receiver channels are handled according to the manufacturer pin descriptions. Power-supply decoupling, charge-pump capacitor placement, and signal routing should follow the recommended layout in the manufacturer datasheet. ESD protection helps manage cable transients, but it does not replace proper grounding, shielding, or external surge protection in severe industrial environments.
This product page combines the exact electrical ratings, package information, pin-location guidance, verified drop-in candidates, and practical interface-layout considerations for SP3232EHEY-L/TR. It also distinguishes genuine same-footprint replacements from functionally similar devices that use different packages, allowing engineers to evaluate compatibility before modifying an existing RS-232 design.
直接替換替代品，適用於 SP3232EHEY-L/TR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： SP3232EHEY-L/TR （相同外形與佔位） — 差異在於 Maximum Data Rate, Package, Mounting Type, Number of Drivers, Number of Receivers.
SP3232EEY-L/TR
✅ 直接替換聯絡詢價
查看資料表 →SP3232ECY-L/TR
✅ 直接替換聯絡詢價
查看資料表 →SP3232EEN-L/TR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →SP3232EHEY-L/TR 規格
| Number of Drivers | 2 drivers |
| Number of Receivers | 2 receivers |
| Transceiver Configuration | 2/2 full RS-232 transceiver |
| Supply Voltage Range | 3 V to 5.5 V |
| Nominal 3.3 V Operation | 3.3 V |
| Maximum Data Rate | 460 kbps |
| Protocol | RS-232 |
| Standards Compatibility | True EIA/TIA-232-F operation |
| Minimum Interoperable RS-232 Source | 2.7 V |
| Charge-Pump Capacitor Requirement | 0.1 µF in 3.3 V operation |
| ESD Protection | ±15 kV human-body-model ESD protection |
| 封裝 | 16-TSSOP |
| Package Width | 0.173 mm |
| Package Body Length | 4.40 mm |
| 安裝類型 | Surface mount |
| Packaging | Tube |
SP3232EHEY-L/TR 4.40 mm 腳位配置指南
SP3232EHEY-L/TR（4.40 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： SP3232EHEY-L/TR.
請參閱 資料表 以查看完整腳位配置。
典型應用
SP3232EHEY-L/TR 適用於 6 應用s: Embedded RS-232 Service Port, Industrial Data-Acquisition Equipment, Portable Test and Measurement Instruments, Point-of-Sale Terminal Interface, Legacy Controller Connectivity, Instrumentation and Control Cabinets.
Embedded RS-232 Service Port
The SP3232EHEY-L/TR fits an embedded service console because it combines two RS-232 channels with a 3.3 V-compatible single supply and a 460 kbps data-rate capability. A host UART connects to the logic-side inputs and outputs, while the driver channels provide the bipolar RS-232 levels required by legacy equipment. Its 16-TSSOP package limits board area, while ±15 kV human-body-model ESD protection improves robustness against charged cable transients. Place the 0.1 µF charge-pump capacitors close to their pins and route both RS-232 channels away from sensitive clock and sensing traces.
推薦
Industrial Data-Acquisition Equipment
The SP3232EHEY-L/TR is suitable for two-channel industrial data acquisition when the equipment must communicate with legacy RS-232 sensors, controllers, or laboratory instruments. Its 3 V to 5.5 V supply range allows operation from a 3.3 V system rail, and the integrated charge pump generates the required positive and negative signaling levels without a separate bipolar supply. The 460 kbps rating supports moderate-speed command and measurement traffic, while enhanced ±15 kV ESD protection adds margin for exposed cables. Verify the device temperature grade and add external surge protection when the interface leaves a controlled enclosure.
推薦
Portable Test and Measurement Instruments
The SP3232EHEY-L/TR works well in portable test instruments that need to download results or accept commands through a legacy RS-232 link. Its small 16-TSSOP footprint preserves board area for signal conditioning and display circuitry, and the 3 V minimum supply supports compact low-voltage systems. Two drivers and two receivers permit more than one RS-232 function when both directions and channels are required. The 460 kbps maximum rate is suitable for many instrument-control protocols, while the low-capacitance charge-pump implementation simplifies external component placement. Confirm cable length and ground-return requirements for reliable operation.
推薦
Point-of-Sale Terminal Interface
The SP3232EHEY-L/TR can support a point-of-sale terminal that retains a serial connection to a printer, scanner, or service computer. The 2/2 driver-receiver arrangement provides two RS-232 channels in one 16-TSSOP device, reducing the footprint compared with separate single-channel transceivers. Operation from 3.3 V suits compact embedded terminals, and the charge-pump circuit needs only 0.1 µF capacitors in 3.3 V operation. The enhanced ESD rating helps protect the interface from human contact during installation or service, although the system must still maintain a common signal ground and correctly shielded connectors.
推薦
Legacy Controller Connectivity
The SP3232EHEY-L/TR provides a practical bridge between a modern controller and legacy RS-232 equipment. One channel can carry commands while another carries status or diagnostic information, taking advantage of the integrated two-driver, two-receiver arrangement. Its 460 kbps rating exceeds the needs of many control and monitoring protocols, while the 3 V to 5.5 V supply range allows common embedded and legacy host rails. Use the manufacturer pin descriptions to connect the host-side UART and charge-pump components, and validate the logic polarity and timing against both the controller firmware and the connected peripheral.
推薦
Instrumentation and Control Cabinets
The SP3232EHEY-L/TR is appropriate for instrumentation and control cabinets where short RS-232 links connect diagnostic equipment to a local controller. Two full-duplex channels support separate command and data paths, while the 3.3 V operation reduces the power and capacitor burden in compact control electronics. Its ±15 kV human-body-model ESD rating adds useful protection against charged cable contact, but long cable runs still require grounding and, where required, dedicated surge suppression. Validate the operating-temperature grade against the cabinet temperature and observe the recommended charge-pump and bypass-capacitor layout for stable operation.
推薦
推薦產品摘要
工程參考資料，適用於 SP3232EHEY-L/TR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | SP3232EEY-L/TR | SP3232ECY-L/TR | SP3232EEN-L/TR |
|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | MaxLinear | MaxLinear |
| Package | 16-TSSOP | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Transceiver Type | 2/2 full RS-232 transceiver | 2/2 full RS-232 transceiver | 2/2 full RS-232 transceiver | 2/2 full RS-232 transceiver |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Maximum Data Rate | 460 kbps | 460 kbps | 460 kbps | 460 kbps |
| Protocol | RS-232 | RS-232 | RS-232 | RS-232 |
| Charge-Pump Capacitor | 0.1 µF in 3.3 V operation | 0.1 µF in 3.3 V operation | 0.1 µF in 3.3 V operation | 0.1 µF in 3.3 V operation |
| RS-232 Standard Compatibility | True EIA/TIA-232-F operation | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver |
主要差異化特點
- Two full RS-232 channels in a compact surface-mount package (對比SP232EET-L/TR)
- Documented enhanced human-body-model ESD protection (對比SP3232EEY-L/TR)
- Low-capacitance 3.3 V charge-pump implementation (對比SP3232ECY-L/TR)
設計說明
Place the SP3232E charge-pump capacitors and supply bypass capacitor directly beside their associated pins, with short ground returns and minimal loop area. Follow the SP3222E/SP3232E manufacturer layout rather than reproducing a generic RS-232 arrangement. Keep the 0.1 µF charge-pump capacitors in 3.3 V operation close to the IC because long traces add inductance that can disturb charge transfer and produce unstable positive or negative rail levels.
Do not treat RS-232 as a logic-level UART connection. The SP3232EHEY-L/TR driver outputs use bipolar RS-232 levels, while the receiver inputs accept bipolar RS-232 signals, so the host UART connects only to the logic-side pins. Verify signal polarity, driver and receiver channel mapping, and the enable behavior for each exact suffix before updating a PCB or substituting a related SP3232E part.
Route each RS-232 driver output as a dedicated pair with its receiver return path when practical, and keep the cable interface away from clocks, ADC inputs, and sensitive analog nodes. The ±15 kV human-body-model ESD rating improves transient tolerance, but it is not a surge-protection rating. Use chassis grounding, shielding, and appropriately rated external protection for cables exposed to severe industrial transients.
Decouple the SP3232EHEY-L/TR supply at the IC with the capacitance specified by the manufacturer datasheet and provide a low-impedance return between the charge-pump capacitors and ground. Although the interface operates from 3 V to 5.5 V, the host UART voltage must remain compatible with the SP3232E logic inputs and outputs. Confirm startup, supply sequencing, and logic levels before enabling the attached transmitter.
合規資訊
The manufacturer datasheet documents true EIA/TIA-232-F operation and ±15 kV human-body-model ESD protection meeting IEC ESD requirements. No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration was identified for this exact ordering code.
