MAX3388ECUG+ - 2.5V 460kbps RS-232 Transceiver | Maxim
MPN： MAX3388ECUG+ ✓ 啟用中MAX3388ECUG+ 概覽
An RS-232 transceiver is an interface integrated circuit that converts between complementary TTL/CMOS logic levels and the bipolar voltage levels used by RS-232 equipment. The MAX3388ECUG+ sits within the interface IC hierarchy as an EIA/TIA-232 communications transceiver, combining line drivers and receivers in one package. Its 2.5V supply operation is particularly useful for reducing the power burden in battery-powered phones, personal digital assistants, and other mobile equipment.
The principal features include three transmit drivers, two receive inputs, operation from a single 2.5V supply, support for data rates as high as 460kbps, and enhanced ESD protection up to 15kV. These characteristics make the device suitable for portable equipment that must communicate with RS-232 peripherals while preserving a compact, low-voltage power architecture.
The device's multi-driver arrangement allows several unidirectional RS-232 outputs alongside two receive channels, enabling asymmetric links such as command, control, status, and diagnostic paths. Its 24-pin TSSOP package provides a conventional surface-mount footprint that can simplify board layout relative to discrete driver and receiver implementations. Low-voltage operation also allows the IC to share a compact portable power rail without requiring a separate 5V interface supply.
Typical applications include serial adapters for personal digital assistants, communication ports in cellular telephones, data acquisition equipment, industrial controllers, and portable test instruments. It is particularly appropriate where an equipment designer needs a compact EIA/TIA-232 interface, multiple logic-level outputs, receive inputs, and stronger ESD tolerance on externally accessible serial lines.
When laying out a design, keep the transceiver's logic-side traces away from the exposed RS-232 connector and route driver outputs as short, direct connections to the interface pins. Confirm the connector's signal polarity and the logic-level relationship of the connected UART before using each driver and receiver, because the RS-232 electrical standard is not directly compatible with ordinary CMOS signals.
This page combines the device's interface functions, RS-232 operating characteristics, verified package information, sourcing guidance, and application-focused design guidance to support faster component selection and implementation. For a replacement, verify the exact suffix, pin assignment, electrical ratings, and system-level RS-232 polarity before production release.
直接替換替代品，適用於 MAX3388ECUG+ — 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。
MAX3388EEUG
✅ 直接替換📋 參考替代品（不在目錄中）
MAX3388EEUG+T
✅ 直接替換聯絡詢價
查看資料表 →MAX3388ECUG+ 規格
| Product Type | 3/2 RS-232 transceiver |
| 供應電壓 | 2.5 V |
| Maximum Data Rate | 460kbps |
| Enhanced ESD Protection | 15kV |
| Number of Drivers | 3 |
| Number of Receivers | 2 |
| Interface Standard | EIA/TIA-232, RS-232 |
| Communication Protocol | V.28/V.24 |
| 封裝 | 24-TSSOP |
| 腳位數 | 24 pins |
| 安裝類型 | Surface mount |
MAX3388ECUG+ 24-tssop 腳位配置指南
MAX3388ECUG+（24-tssop 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： MAX3388ECUG+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX3388ECUG+ 適用於 6 應用s: Portable Data Terminals, Cellular Phone Accessories, Industrial Serial Controllers, Portable Test and Measurement, Data Acquisition Equipment, Embedded Serial Adapters.
Portable Data Terminals
The MAX3388ECUG+ fits portable data terminals that need an RS-232 interface without adding a separate 5V interface supply. Its 2.5V operating supply reduces the power burden, while three drivers and two receivers support command, status, and diagnostic paths. The 460kbps capability is suitable for configuration transfers and moderate-rate serial data. According to the Maxim Integrated datasheet, the device also provides enhanced ESD protection up to 15kV, which is valuable when the serial connector is accessible during field use.
推薦
Cellular Phone Accessories
The MAX3388ECUG+ can support external RS-232 connectivity in cellular phones and closely related mobile accessories. The 2.5V supply operation aligns with compact, low-power product architectures, while three transmit drivers permit multiple unidirectional control outputs. Two receive inputs can monitor equipment status or incoming serial data. Its enhanced 15kV ESD rating is particularly relevant to a connector exposed to electrostatic discharge during charging, accessory connection, and everyday handling.
推薦
Industrial Serial Controllers
The MAX3388ECUG+ is suitable for compact industrial controllers that expose an RS-232 service or configuration port. Three drivers and two receivers allow separate command, status, and alarm signals, and the 460kbps rate supports faster data exchange than a low-speed serial link. The 24-TSSOP package supports conventional surface-mount assembly, while 15kV enhanced ESD protection adds defense at an externally accessible interface. Grounding and signal-polarity checks remain essential because RS-232 is not directly compatible with CMOS logic.
推薦
Portable Test and Measurement
The MAX3388ECUG+ can form the host-side RS-232 port of a portable test instrument or programming fixture. Its 2.5V operation supports low-power portable equipment, and its 460kbps data rate accommodates instrument commands and measured-data transfers. The three-driver, two-receiver arrangement can implement asymmetric control and response channels in one device. Enhanced ESD protection up to 15kV adds useful robustness when the user connects probes, adapters, or external serial equipment in field conditions.
推薦
Data Acquisition Equipment
The MAX3388ECUG+ is appropriate for data-acquisition equipment that communicates with an external controller over RS-232. The three drivers can carry separate commands or configuration outputs, while two receivers can return status and measurement results. Operation up to 460kbps supports moderate-rate acquisition traffic, and the 2.5V supply helps simplify portable instrument power design. For exposed equipment ports, the 15kV enhanced ESD rating helps protect the interface, but cable routing and connector grounding still require careful implementation.
推薦
Embedded Serial Adapters
The MAX3388ECUG+ fits compact embedded adapters that translate a low-voltage processor or controller into an RS-232 connection. Its 2.5V supply operation reduces the need for a separate interface rail, while the 24-TSSOP package provides a compact surface-mount implementation. Three drivers and two receivers support multi-signal adapters without requiring several discrete interface packages. The 460kbps rate covers command traffic and moderate data transfer, and 15kV enhanced ESD protection is useful for cable-connected external ports.
推薦
推薦產品摘要
工程參考資料，適用於 MAX3388ECUG+ — 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 | MAX3388EEUG | MAX3388EEUG+T |
|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 24-TSSOP | 24-TSSOP | 24-TSSOP |
| Device Type | 3/2 RS-232 transceiver | 3/2 RS-232 transceiver | 3/2 RS-232 transceiver |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V |
| Maximum Data Rate | 460kbps | 460kbps | 460kbps |
| Number of Drivers | 3 | 3 | 3 |
| Number of Receivers | 2 | 2 | 2 |
| Communication Standard | EIA/TIA-232, V.28/V.24 | EIA/TIA-232, V.28/V.24 | EIA/TIA-232, V.28/V.24 |
主要差異化特點
- Lower supply voltage for portable interface designs (對比MAX211IDWR)
- Documented complete replacement path (對比MAX3388EEUG)
- 460kbps operation with three drivers and two receivers (對比MAX3388EEUG+T)
設計說明
Route the three RS-232 driver outputs directly toward the connector-side protection and interface circuitry, and keep those traces away from clock, UART logic, and sensitive analog signals. Place the transceiver close enough to the connector that exposed line segments remain short. Cross-reference documentation identifies consistent terminals for MAX3388EEUG and MAX3388EEUG+T, but the PCB should still be checked against the exact suffix's pin description.
Treat each RS-232 driver and receiver route as a potential noise source. Keep the logic-side UART trace short, provide a solid ground reference, and avoid sharing narrow return paths with switching currents. If a cable leaves the enclosure, use the interface's 15kV enhanced ESD capability as one layer of protection and follow the connector's recommended grounding and shielding arrangement.
Do not connect the MAX3388ECUG+ directly to a TTL or CMOS UART without the transceiver's internal RS-232 level conversion. Verify driver polarity, receiver input assignment, logic-side voltage levels, and the meaning of every enabled pin in the manufacturer pin-description table. In particular, an unused receiver input must be handled according to the datasheet rather than left floating without guidance.
Build the interface around the device's 2.5V operating supply and verify that the selected regulator can support the transceiver plus any external interface circuitry. Place local supply decoupling where the manufacturer schematic recommends it, with a short return path to the device ground. Confirm the actual supply-voltage and quiescent-current limits in the electrical-characteristics table before releasing the power design.
合規資訊
The product is an interface IC, so AEC-Q100 qualification is not applicable. Specific RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not identified.