MAX3232IDBG4 - Dual 250kbps RS-232 Transceiver | Texas Instruments
料号： MAX3232IDBG4 ✗ 停产MAX3232IDBG4 概述
An RS-232 transceiver is the interface circuit that converts logic-level signals into RS-232 voltage levels and restores incoming RS-232 signals to logic-compatible levels. The MAX3232 belongs to the interface IC and RS-232 transceiver hierarchy, where the charge-pump circuitry supports single-supply operation without a separate negative power rail. The two-driver, two-receiver arrangement provides two complete point-to-point serial channels in one package.
Key features include a 3 V to 5.5 V operating range, 250 kbps data-rate capability, two drivers, two receivers, and ±15 kV ESD protection on the serial-port connections. According to the Texas Instruments MAX3232 datasheet, the device meets the requirements of TIA/EIA-232-F. Its industrial temperature option operates from −40°C to +85°C, making the part suitable for equipment operating across extended commercial and industrial temperature ranges.
The internal dual charge-pump circuit generates the positive and negative voltage levels required by RS-232 while operating from one low-voltage supply. Charge-pump capacitors are required to implement this function, while the external interface also needs the application-specific charge-pump capacitor arrangement and input/output bypass capacitors described in the manufacturer datasheet. The charge pumps do not eliminate the need for correct bypass-capacitor selection; their switching activity must remain compatible with the signal quality required by the connected equipment.
Typical uses include RS-232 adapters, industrial control panels, test equipment, barcode scanners, data loggers, embedded service interfaces, and legacy peripheral connections. A particularly suitable use is a two-channel industrial controller that requires two RS-232 ports while operating from a 3.3 V or 5 V system supply. For long cables or externally accessible connectors, the ±15 kV ESD rating adds protection, although board-level grounding and surge design must still address the complete enclosure and cable environment.
Designers should preserve the manufacturer-specified charge-pump and bypass-capacitor values, place them close to their associated pins, and route RS-232 driver outputs and receiver inputs away from sensitive low-level circuitry. Do not substitute a functionally similar transceiver without checking its package pinout, supply range, driver and receiver count, data rate, and ESD implementation. These checks are essential because a shared package name alone does not guarantee electrical or timing compatibility.
This product guide combines the manufacturer specification with application-oriented integration guidance, drop-in alternatives, and a parameter comparison that supports faster design reviews. It also emphasizes practical distinctions involving the improved MAX3232E family, package compatibility, operating temperature, channel count, and interface protection so engineers can select a replacement without overlooking board-level constraints.
直接替换替代料： MAX3232IDBG4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
MAX3232EIDBG4
✅ 直接替换联系询价
查看数据手册 →MAX3232CDBR
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232IDB
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232IDBRE4
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232EEAE
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232IDBG4 规格参数
| Product Type | Dual RS-232 line driver and receiver |
| Supply Voltage Range | 3 V to 5.5 V |
| Maximum Data Rate | 250 kbps |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| ESD Protection | ±15 kV |
| Internal Charge Pumps | 2 |
| 封装 | 16-pin SSOP |
| 工作温度 | −40°C to +85°C |
| Interface Standard | TIA/EIA-232-F |
| 安装类型 | Surface mount |
| ESD Protection Scope | Serial-port connection pins, including GND |
| Driver and Receiver Configuration | 2/2 full-duplex transceivers |
| Single-Supply Operation | 3 V to 5.5 V |
MAX3232IDBG4 16-pin ssop 引脚配置指南
MAX3232IDBG4（16-pin ssop 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： MAX3232IDBG4.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX3232IDBG4 适用于 6 应用s: Industrial Controller Serial Interfaces, RS-232 Test and Measurement Equipment, Data Loggers and Barcode Scanners, Embedded Equipment Service Ports, RS-232-to-TTL Interface Cards, Networking and Communication Equipment.
Industrial Controller Serial Interfaces
The MAX3232IDBG4 fits industrial controllers requiring two RS-232 ports on a common 3.3 V or 5 V rail. Its two drivers and two receivers provide two complete channels, while the 250 kbps maximum rate covers common configuration and service protocols. The −40°C to +85°C operating range supports extended industrial environments. Place the charge-pump and bypass capacitors close to the device and route the two RS-232 channels away from sensitive control circuitry.
推荐
RS-232 Test and Measurement Equipment
The MAX3232IDBG4 is useful in test instruments that expose two legacy RS-232 ports for instrument control or data capture. Its 250 kbps rate supports moderate-speed serial commands and legacy communications, and the 3 V to 5.5 V range permits operation from either 3.3 V or 5 V instrumentation rails. The dual charge-pump architecture avoids a separate negative supply, while ±15 kV ESD protection adds robustness at accessible serial connectors.
推荐
Data Loggers and Barcode Scanners
The MAX3232IDBG4 can bridge low-voltage controller logic to RS-232 barcode scanners, label printers, and compact data loggers. Two channels allow one port to handle a peripheral while another supports configuration or diagnostics, subject to the 250 kbps interface rate. Its single 3 V to 5.5 V supply operation simplifies portable and embedded equipment, and the 16-pin SSOP package preserves board area in compact systems.
推荐
Embedded Equipment Service Ports
The MAX3232IDBG4 fits embedded systems that retain an RS-232 service interface for configuration, diagnostics, or field maintenance. Two drivers and two receivers support two serial links from one device, and the 250 kbps rate is suitable for many service protocols. Operating from 3.3 V or 5 V reduces supply complexity, while the extended −40°C to +85°C temperature range supports equipment deployed outside controlled room temperatures.
推荐
RS-232-to-TTL Interface Cards
The MAX3232IDBG4 is appropriate for compact interface cards that translate host logic levels to RS-232. Its two independent driver and receiver paths support two serial ports on one card, and the 3 V to 5.5 V supply range allows compatibility with common embedded logic levels. The 250 kbps data-rate limit should be checked against the intended protocol and cable capacitance. Correct charge-pump capacitor placement is essential for reliable operation.
推荐
Networking and Communication Equipment
The MAX3232IDBG4 can provide legacy RS-232 connectivity in network equipment, gateways, and communication modules that also support modern interfaces. Two channels can handle a management port and a diagnostic or service port, although the 250 kbps rate is lower than many modern high-speed serial standards. The single-supply charge-pump design reduces board complexity, and ±15 kV ESD protection is useful where serial connectors are accessible to operators.
推荐
推荐产品汇总
工程参考数据： MAX3232IDBG4 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MAX3232EIDBG4 | MAX3232CDBR | MAX3232IDB | MAX3232IDBRE4 | MAX3232EEAE |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP | 16-SSOP |
| Device Type | Dual RS-232 line driver and receiver | Dual RS-232 line driver and receiver | Dual RS-232 line driver and receiver | Dual RS-232 line driver and receiver | Dual RS-232 line driver and receiver | Dual RS-232 line driver and receiver |
| Number of Drivers | 2 | 2 | 2 | 2 | 2 | 2 |
| Number of Receivers | 2 | 2 | 2 | 2 | 2 | 2 |
关键差异点
- Directly documented improved MAX3232 replacement （对比 MAX3232EIDBG4)
- Two complete RS-232 channels in one package （对比 MAX3232CDBR)
- Single-supply RS-232 operation with integrated protection （对比 MAX3232IDB)
设计说明
Place the charge-pump capacitors and supply bypass capacitors as close as practical to the MAX3232IDBG4 pins specified in the Texas Instruments MAX3232 datasheet. Keep the high-current charge-pump paths compact and avoid routing them beneath the RS-232 receiver inputs. Short ground returns and a continuous ground plane help reduce noise coupling between the two channels.
Separate RS-232 driver outputs from receiver inputs and sensitive logic traces. Driver outputs use large voltage swings and can couple into nearby low-level signals even though the interface operates from a single supply. Use the manufacturer reference layout as the starting point, preserve clearances around exposed connector paths, and check the physical cable and ground-return arrangement as part of the EMC design.
Do not treat any 16-pin RS-232 transceiver as automatically interchangeable. Before substituting MAX3232EIDBG4 or another family member, confirm the exact pinout, supply range, driver and receiver count, data rate, operating temperature, and ESD configuration. A package match establishes footprint compatibility but does not by itself establish electrical compatibility for every operating condition.
合规信息
The interface meets TIA/EIA-232-F according to the Texas Instruments MAX3232 datasheet. Specific material-compliance and automotive-qualification declarations are not stated in the cited product information and therefore remain unknown.
