MAX3232EIPWRQ1 - 250kbps RS-232 Transceiver | Texas Instruments
料号： MAX3232EIPWRQ1 ✓ 量产中MAX3232EIPWRQ1 概述
An RS-232 transceiver is the interface between a modern low-voltage digital controller and a physical serial port. It belongs to the interface-IC hierarchy, where transceivers combine digital line drivers, line receivers, voltage conversion, and electrostatic-discharge protection. The MAX3232E-Q1 family is designed for industrial and automotive systems requiring TIA/EIA-232-F and ITU V.28-compatible operation.
The device includes two line drivers and two line receivers. Its 3 V to 5.5 V VCC operating range supports both 3.3 V and 5 V system rails, while its maximum data rate of 250 kbit/s covers legacy serial-port, industrial-control, and point-to-point communications. The typical standby current is 300 µA, and the dual charge pump supplies the positive and negative voltage levels required to generate compliant RS-232 output levels.
The MAX3232EIPWRQ1 also meets or exceeds TIA/EIA-232-F and ITU V.28 requirements. Pin-to-pin ±15 kV IEC ESD protection strengthens the interface against electrostatic discharge on exposed serial connections. Because the IC combines level translation, charge-pump generation, and protection, the design can use fewer external components than a discrete RS-232 implementation.
Typical applications include automotive diagnostic and service interfaces, industrial serial controllers, programmable-logic-controller communications, point-to-point RS-232 links, and embedded systems that retain a legacy serial console. The 16-pin TSSOP package supports compact control boards, while the automotive qualification makes the device suitable for electrically harsh vehicle environments when the complete system requirements are satisfied.
Design the charge-pump capacitors and VCC bypass capacitor close to their associated pins, and keep the serial traces away from high-current switching paths. Confirm that cable length, baud rate, grounding, and connector selection remain suitable for the chosen RS-232 application. The maximum data rate is 250 kbit/s, so it should not be selected for faster differential links or unrelated high-speed serial protocols.
This page consolidates the exact electrical ratings, package information, interface standards, application guidance, and verified drop-in alternatives of the MAX3232EIPWRQ1 into an engineering-focused selection reference.
直接替换替代料： MAX3232EIPWRQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MAX3232EIPWRQ1 （相同外形与封装尺寸） ——差异在于 ESD Protection, Package.
MAX3232EIPWR
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232CPWR
✅ 直接替换联系询价
查看数据手册 →MAX3232ECPWR
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232EIPWRQ1 规格参数
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Transceiver Configuration | 2/2 full-duplex |
| Supply Voltage Range | 3 V to 5.5 V |
| Maximum Data Rate | 250 kbit/s |
| Interface Standard | TIA/EIA-232-F |
| Interface Standard | ITU V.28 |
| ESD Protection | ±15 kV IEC, pin-to-pin |
| Charge-Pump Supply Outputs | V+ and V− |
| Standby Current | 300 µA typical |
| Automotive Qualification | AEC-Q100 qualified |
| 封装 | 16-pin TSSOP |
| Package Width | 4.40 mm |
| Package Length | 0.173 in |
| 安装类型 | Surface mount |
| Packaging | Tape and reel |
MAX3232EIPWRQ1 0.173 in 引脚配置指南
MAX3232EIPWRQ1（0.173 in 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： MAX3232EIPWRQ1.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX3232EIPWRQ1 适用于 6 应用s: Automotive Diagnostic Interfaces, Industrial Serial Control, PLC and Equipment Communication, Point-to-Point Data Links, Legacy Serial Console, Instrumentation and Measurement.
Automotive Diagnostic Interfaces
The MAX3232EIPWRQ1 fits vehicle diagnostic and service interfaces because it is AEC-Q100 qualified, supports a 3 V to 5.5 V supply, and provides two drivers with two receivers for full-duplex RS-232 communication. Its ±15 kV IEC pin-to-pin ESD protection strengthens a connector-facing interface exposed to vehicle transients. At data rates up to 250 kbit/s, the device can connect a diagnostic controller to an external service-equipment port. The finished design should still validate harness length, grounding, transient immunity, and system-level EMC performance.
Industrial Serial Control
The MAX3232EIPWRQ1 is suitable for industrial controllers that retain a legacy RS-232 command or configuration port. Two drivers and two receivers support bidirectional point-to-point communication, while the 250 kbit/s maximum rate covers many legacy supervisory and instrumentation links. Operating from 3 V to 5.5 V allows integration with 3.3 V control logic without a 5 V-only interface supply. Its 300 µA typical standby current also suits systems that spend significant time inactive. The PCB should provide local bypass and controlled return paths to minimize converter noise on the serial interface.
PLC and Equipment Communication
The two-driver, two-receiver configuration of the MAX3232EIPWRQ1 supports full-duplex RS-232 links between programmable-logic controllers, test equipment, and service consoles. Its 3 V to 5.5 V supply range is useful in mixed-voltage industrial control boards, and the internal dual charge pump eliminates the need for a separate switched ±12 V supply. The 250 kbit/s rate is adequate for many supervisory protocols. For installation, keep the cable-side interface away from relay and motor-control stages, provide a stable ground reference, and verify that the selected connector and cable satisfy the intended RS-232 distance and topology.
Point-to-Point Data Links
The MAX3232EIPWRQ1 can bridge two asynchronous controllers over a dedicated RS-232 link at rates up to 250 kbit/s. Its two line drivers support simultaneous transmission paths, while the two receivers provide the corresponding inbound channels. Operating from 3.3 V or 5 V makes the device practical for embedded and industrial data-acquisition equipment. The internal charge-pump design reduces the external component count compared with a discrete level-shifting implementation. Signal integrity at the connector still depends on controlled impedance paths, proper reference grounding, and suitable cable characteristics; the IC does not remove the need for an EMC-compliant enclosure.
Legacy Serial Console
The MAX3232EIPWRQ1 is useful for maintaining a legacy RS-232 service or debug console on an otherwise modern embedded system. Its 3 V to 5.5 V operating range permits use with a 3.3 V host controller, while the charge pump generates the bipolar voltage required for RS-232 output levels. The 16-pin TSSOP package reduces board area compared with many through-hole legacy transceivers, and the 250 kbit/s limit suits console speeds commonly used for configuration, diagnostics, and firmware-service interfaces. Designers should isolate the serial connector ground according to the system architecture and provide appropriate protection for field-accessible cables.
Instrumentation and Measurement
The MAX3232EIPWRQ1 can connect laboratory and field instrumentation to a host computer over an RS-232 command interface. The dual driver and dual receiver arrangement supports bidirectional control and measurement traffic, and the 250 kbit/s rate is suitable for many low-to-moderate-speed instrument protocols. A 3.3 V or 5 V supply allows flexible placement within mixed-signal systems, while the ±15 kV IEC protection rating improves robustness at a connector-facing port. In precision instrumentation, preserve a clean analog and digital ground strategy and keep the charge-pump return currents away from sensitive signal paths to minimize coupling into measurements.
工程参考数据： MAX3232EIPWRQ1 ——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 | MAX3232EIPWR | MAX3232CPWR | MAX3232ECPWR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Drivers/Receivers | 2/2 | 2/2 | 2/2 | 2/2 |
| Supply Voltage | 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 | 250 kbit/s | 250 kbit/s | 250 kbit/s | 250 kbit/s |
| Mounting Type | Surface mount | Surface mount | Surface mount | Surface mount |
关键差异点
- Automotive qualification distinguishes the Q1 ordering code （对比 MAX3232EIPWR)
- Same pin-compatible family architecture preserves PCB reuse （对比 MAX3232CPWR)
- ESD protection is specified for exposed serial pins （对比 MAX3232ECPWR)
设计说明
Place the VCC bypass capacitor and the charge-pump capacitors close to their designated pins, with short ground returns. Keep the charge-pump loop compact because its switching currents can couple into nearby communication and measurement circuitry. Follow the manufacturer datasheet capacitor values and PCB recommendations rather than substituting capacitors solely by voltage rating.
Route the RS-232 driver and receiver nets away from clocks, switching-regulator nodes, relays, and high-current motor traces. Preserve a continuous return path between the transceiver ground and the interface reference ground, while avoiding long shared stubs between the IC and connector. This reduces susceptibility to common-mode noise and helps maintain dependable operation at the 250 kbit/s limit.
Do not treat ±15 kV IEC protection as permission to omit connector grounding, shielding, or system-level surge protection. The rating applies to the specified serial-port pins, while the complete vehicle or industrial interface must also satisfy its cable, connector, and enclosure requirements. Confirm the MAX3232EIPWRQ1 operating temperature range and production qualification conditions before releasing a design.
合规信息
The manufacturer identifies MAX3232EIPWRQ1 as qualified for automotive applications, and component documentation identifies it as AEC-Q100 qualified. Other environmental and material-compliance declarations are not established by the cited technical data.