MAX3232CPE+ - 3.0V to 5.5V Dual RS-232 Transceiver | Maxim Integrated
料号： MAX3232CPE+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $10.5565 | $10.56 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MAX3232CPE+ 概述
An RS-232 transceiver is an interface IC that bridges the voltage-domain difference between digital logic and the bipolar, noise-tolerant RS-232 standard. MAX3232 belongs to the RS-232 transceiver hierarchy, which sits above interface ICs and semiconductor devices. Its dual charge-pump design generates the positive and negative voltages required by true RS-232 while operating from a single low-voltage supply.
The key verified features include a 3.0V minimum and 5.5V maximum supply range, operation up to 1 Mbps, two drivers and two receivers, true RS-232 operation, and four external 0.1 uF charge-pump capacitors. The MAX3232CPE+ is identified by distributors as a 16-PDIP through-hole device. One distributor result also associates the family with low-power operation, making it suitable for portable and embedded systems where supply current and board area matter.
The device uses a dual charge-pump architecture with a proprietary low-dropout transmitter output stage. This architecture provides true RS-232 output levels from a single 3.0V to 5.5V supply. The required charge-pump capacitors should be placed close to their associated pins, and the external capacitor values should follow the manufacturer datasheet rather than general-purpose substitution assumptions.
Typical applications include RS-232 adapters, industrial serial controllers, test equipment, POS terminals, embedded debug ports, and communication links to legacy computers or peripherals. The two-driver, two-receiver arrangement supports bidirectional point-to-point serial links when paired with the appropriate line-side protection and connector design.
When designing a board, reserve a dedicated 16-pin PDIP footprint, route the charge-pump network close to the IC, and keep RS-232 traces away from sensitive analog or high-speed digital signals. Add appropriate transient protection according to the cable length and exposure to industrial transients; the supplied data does not specify an external protection component, so protection selection remains a board-level design decision.
This page combines distributor pricing, verified electrical facts, source links, and engineering-oriented design guidance for engineers evaluating MAX3232CPE+ procurement and implementation.
直接替换替代料： MAX3232CPE+ ——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： MAX3232CPE+ （相同外形与封装尺寸） ——差异在于 Device Type, Maximum Data Rate, Mounting Type, Package, Supply Voltage Range.
快速对比工具——选择替代料号进行并排对比：
MAX232CPE+
✅ 直接替换📋 参考替代料（不在目录中）
MAX3232CPA+
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX3232CPE+ 规格参数
| Device Type | RS-232 transceiver |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Maximum Data Rate | 1 Mbps |
| External Charge-Pump Capacitors | 4 x 0.1 uF |
| Interface Standard | True RS-232 |
| Logic Compatibility | TTL/CMOS |
| Architecture | Dual charge-pump |
| 封装 | 16-pin PDIP |
| 安装类型 | Through Hole |
MAX3232CPE+ 16-pin pdip 引脚配置指南
MAX3232CPE+（16-pin pdip 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： MAX3232CPE+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX3232CPE+ 适用于 6 应用s: Industrial RS-232 Control Links, Embedded UART Serial Ports, Legacy Computer Peripherals, Test and Measurement Equipment, POS and Retail Terminal Interfaces, Communication and Debug Interfaces.
Industrial RS-232 Control Links
MAX3232CPE+ fits industrial serial-control links that need true RS-232 levels from a 3.0V to 5.5V logic supply. Its two drivers and two receivers support a bidirectional point-to-point connection, while the verified 1 Mbps capability provides headroom above common 115.2 kbit/s control rates. Place the four 0.1 uF charge-pump capacitors close to the IC and add cable-side transient protection appropriate to the installation environment.
推荐
Embedded UART Serial Ports
The MAX3232CPE+ is appropriate for embedded systems that expose a legacy RS-232 connector from a 3.3V or 5V UART. A single transceiver handles both logic-to-line driver and line-to-logic receiver functions, reducing external circuitry. Verify the UART voltage levels and connector pinout during design-in; the supplied data does not specify operating temperature or ESD limits.
推荐
Legacy Computer Peripherals
Use MAX3232CPE+ when an embedded controller must communicate with a legacy RS-232 peripheral or service port. The device translates between TTL/CMOS logic and true RS-232 levels, while its 1 Mbps rated operation allows higher-speed links than the traditional 115.2 kbit/s range when the connected equipment supports it. Keep the RS-232 trace away from sensitive analog circuitry.
推荐
Test and Measurement Equipment
MAX3232CPE+ can be used in test and measurement equipment that needs a robust RS-232 service or configuration port. The 3.0V to 5.5V supply range supports common instrument logic rails, and the dedicated RS-232 transceiver simplifies the interface compared with discrete level conversion. For bench equipment, add protection and consider cable length, grounding, and ESD exposure during the system-level design.
推荐
POS and Retail Terminal Interfaces
The MAX3232CPE+ is suitable for serial connectivity in point-of-sale and retail terminal equipment where a dedicated RS-232 port is required. Its dual-driver, dual-receiver organization supports the standard bidirectional RS-232 signal set, and the PDIP package facilitates through-hole assembly in products that are not constrained to ultra-small form factors. Validate grounding and transient protection for the deployed cable environment.
推荐
Communication and Debug Interfaces
MAX3232CPE+ can provide a wired RS-232 debug or configuration interface for boards that retain through-hole assembly. The transceiver’s single-supply operation removes the need for a separate external RS-232 line-power supply, while the charge-pump network generates the required bipolar signaling. Design the connector, grounding, and protection network with the cable environment in mind rather than treating the IC as a complete surge-protection solution.
推荐
工程参考数据： MAX3232CPE+ ——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 | MAX3232CSE+ | MAX3232CWE+ | MAX232CPE+ | MAX3232CPA+ |
|---|---|---|---|---|---|
| Package | 16-pin PDIP | 16-pin SOIC | 16-pin SOIC | 16-pin PDIP | 16-pin PDIP |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Device Type | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver | RS-232 transceiver family | RS-232 transceiver family |
| Mounting Style | Through Hole | SMD/SMT | SMD/SMT | Through Hole | Through Hole |
关键差异点
- Through-hole package option （对比 MAX3232CSE+)
- Verified single-supply operation （对比 MAX3232CPA+)
- True RS-232 conversion （对比 MAX232CPE+)
设计说明
Connect the MAX3232CPE+ to a 3.0V to 5.5V supply within the verified operating range, and place the required 0.1 uF charge-pump capacitors close to the associated IC pins. The supplied data does not specify supply-current limits, so use the manufacturer datasheet for quiescent and load-current calculations rather than estimating from the family description.
Reserve the exact 16-pin PDIP footprint for MAX3232CPE+ and verify the pin numbering against the manufacturer datasheet before fabrication. The verified search results do not provide a complete pin table, so no pin names are asserted here. Keep the charge-pump loop compact and route RS-232 traces away from sensitive analog nodes.
Do not substitute MAX3232CSE+ or MAX3232CWE+ directly on a MAX3232CPE+ board without checking the package transition. The verified Xecor comparison identifies MAX3232CSE+ as surface-mount SOIC while MAX3232CPE+ is through-hole PDIP. Also do not assume the IC replaces external cable protection; use connector-side transient protection appropriate to the cable environment.
Treat the RS-232 connector, transceiver, and cable interface as a system-level signal-integrity and protection design. Keep high-current and switching paths away from the RS-232 output and receiver traces, provide a defined ground reference, and validate the completed board with the intended cable length and equipment grounding arrangement.
合规信息
The supplied search results identify MAX3232CPE+ as lead-free in one generic listing, but they do not provide a reliable manufacturer compliance statement. RoHS, REACH, halogen-free, and conflict-minerals status are therefore recorded as unknown.
