MAX202ID - 120kbps Dual RS-232 Transceiver | Texas Instruments
料号： MAX202ID ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MAX202ID 概述
An RS-232 transceiver is an interface IC within the broader communications-interface and semiconductor hierarchy. Its driver channels convert logic-level inputs into bipolar RS-232 outputs, while its receiver channels convert bipolar serial inputs into logic-level signals. The MAX202ID integrates both directions into one package, making it suitable for asynchronous serial links, industrial control links, data acquisition equipment, and legacy computer peripherals.
Key features include operation from a single 5 V supply, a 120 kbps maximum signaling rate, ±9 V output levels, and ±15 kV human-body-model ESD protection on the serial-port pins, including ground. Four external 0.1 µF capacitors support the integrated charge pump. The device is designed to be interchangeable with the Maxim MAX202 and is identified as a 16-SOIC part operating across the industrial temperature range.
Technically, the MAX202ID combines two transmit channels and two receive channels with a dual charge pump. The charge pump generates the voltage excursions needed by RS-232 even though the IC itself operates from 5 V. Pin-compatible alternatives identified in the supplied cross-reference material include MAX202EESE+T and MAX202EWE+; their package and terminal compatibility should still be checked against the exact production schematic before substitution.
Typical uses include RS-232 links between microcontrollers and external equipment, instrumentation, service interfaces, and industrial serial adapters. Its 120 kbps rate is suitable for many asynchronous control and data-transfer applications but is not the choice for higher-bandwidth RS-232 links. The integrated ESD protection improves resilience when the connector is exposed to user-contact transients.
Design attention should be given to charge-pump capacitor placement, grounding, and the voltage drop across the external RS-232 connection. The four specified 0.1 µF capacitors should be placed close to their associated pins, and the ground path should be short and continuous. A logic-side supply decoupler and appropriately rated serial connector are also important for reliable operation.
This page consolidates the verified manufacturer and distributor information, practical RS-232 design guidance, application fit, and same-footprint replacement context for engineers evaluating the MAX202ID. Distributor pricing and availability should be checked against the current source data before purchase.
直接替换替代料： MAX202ID ——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： MAX202ID （相同外形与封装尺寸） ——差异在于 Channel Configuration, ESD Protection, Product Type.
快速对比工具——选择替代料号进行并排对比：
MAX202EESE+T
✅ 直接替换📋 参考替代料（不在目录中）
MAX202EWE+
✅ 直接替换📋 参考替代料（不在目录中）
TRS202E
✅ 直接替换📋 参考替代料（不在目录中）
MAX202IDG4
✅ 直接替换📋 参考替代料（不在目录中）
MAX202CD
✅ 直接替换✓ 有现货
$1.1781 / 个
查看数据手册 →MAX202EESE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX202ID 规格参数
| Product Type | 5 V dual RS-232 line driver/receiver |
| Channel Configuration | 2 line drivers and 2 line receivers |
| Maximum Data Rate | 120 kbps |
| 电源电压 | 5 V nominal |
| 工作温度范围 | -40 °C to +85 °C |
| Driver Output Levels | ±9 V |
| ESD Protection | ±15 kV human-body-model protection |
| External Charge-Pump Capacitors | Four 0.1 µF capacitors |
| Interface Standard | TIA/EIA-232-F |
| Transceiver Type | Full-duplex 2/2 RS-232 transceiver |
| 封装 | 16-pin SOIC |
| 安装类型 | Surface mount |
| Logic Compatibility | TTL/CMOS logic-level interface |
| ESD Coverage | Serial-port connection pins, including ground |
| Quoted Output Signal Levels | ±5 V EIA/TIA-232E under specified loading |
MAX202ID 引脚配置
| 引脚 1 | R1OUT — Receiver 1 output |
| 引脚 2 | R1IN — Receiver 1 input |
| 引脚 3 | R2IN — Receiver 2 input |
| 引脚 4 | R2OUT — Receiver 2 output |
| 引脚 5 | VCC — Positive supply |
| 引脚 6 | C1+ — Charge-pump capacitor terminal |
| 引脚 7 | C1- — Charge-pump capacitor terminal |
| 引脚 8 | C2+ — Charge-pump capacitor terminal |
| 引脚 9 | C2- — Charge-pump capacitor terminal |
| 引脚 10 | GND — Ground |
| 引脚 11 | T1IN — Driver 1 logic input |
| 引脚 12 | T1OUT — Driver 1 RS-232 output |
| 引脚 13 | T2IN — Driver 2 logic input |
| 引脚 14 | T2OUT — Driver 2 RS-232 output |
| 引脚 15 | EN — Receiver enable input |
| 引脚 16 | NC — Not connected (per datasheet) |
典型应用
MAX202ID 适用于 6 应用s: Industrial RS-232 Control Links, Microcontroller Serial Debug and Configuration, Data Acquisition Instruments, Point-of-Sale and Service Equipment, Embedded Security and Access Systems, Legacy Peripheral Connectivity.
Industrial RS-232 Control Links
The MAX202ID fits legacy industrial equipment that communicates through an RS-232 port from a microcontroller, PLC, or service controller. Its two drivers and two receivers provide bidirectional communication in one 16-SOIC package, while the 5 V supply matches many embedded systems. The 120 kbps rate is more than sufficient for command polling, configuration transfer, and status reporting. Its -40 °C to +85 °C specification supports industrial temperature ranges, and the ±15 kV HBM protection helps the serial-port pins withstand connector transients. Designers should still add appropriate cable protection for long or exposed installations.
推荐
Microcontroller Serial Debug and Configuration
The MAX202ID is suitable for connecting a 5 V microcontroller UART to a legacy serial adapter or service interface. The controller sees ordinary logic-level receive outputs, while the driver channels produce the bipolar signaling expected by the remote RS-232 port. At 120 kbps, the device supports common asynchronous configuration protocols and diagnostic traffic without requiring a higher-speed interface. Keep the logic-side traces short and place the charge-pump capacitors close to the IC. The integrated ESD feature is valuable when the UART is exposed through a user-accessible connector, although chassis grounding and surge protection remain system-level concerns.
推荐
Data Acquisition Instruments
The MAX202ID can interface older laboratory and industrial instruments whose control ports use RS-232. Two receiver channels can monitor commands, status, or measurement events, while two driver channels support requests and configuration writes. The 120 kbps rate is appropriate for many short instrument-control packets and avoids the complexity of a modern differential bus. Use the device where the remote equipment requires TIA/EIA-232 signaling rather than RS-485 levels. The four external 0.1 µF capacitors and short ground return are important for stable operation, particularly when the cable leaves the instrument enclosure and enters a noisy environment.
推荐
Point-of-Sale and Service Equipment
The MAX202ID is useful in legacy point-of-sale terminals, service consoles, and peripheral controllers that retain an RS-232 management port. A single 16-SOIC transceiver simplifies the physical interface compared with separate driver and receiver packages, while its 120 kbps throughput accommodates command traffic and short data transfers. The device’s ±15 kV HBM ESD rating is helpful for equipment near frequently connected cables. Designers should select connector pinout carefully because RS-232 DTE and DCE conventions differ, and they should verify that the remote equipment uses the expected bipolar voltage levels.
推荐
Embedded Security and Access Systems
The MAX202ID can support legacy access-control or security equipment that exposes an RS-232 configuration or diagnostic port. The two-channel transmitter and receiver arrangement permits bidirectional setup commands and status reporting from an embedded controller. The MAX202ID’s specified -40 °C to +85 °C range is useful in equipment enclosures that may experience temperature variation, while its ESD protection helps against contact events on the serial connector. Because these systems may use long cables, maintain a low-impedance ground connection and consider external protection components if the cable leaves the controlled enclosure.
推荐
Legacy Peripheral Connectivity
The MAX202ID supports designs that must connect newer control logic to older RS-232 peripherals, printers, adapters, or laboratory devices. Its 2/2 configuration allows one device to handle both directions without using separate transceiver packages, and the 5 V operation simplifies integration with conventional embedded logic. The 120 kbps rate is appropriate for many asynchronous peripheral protocols, but cable length, capacitance, loading, and the remote receiver should be checked before assuming reliable operation. The device should be supported with local decoupling and the four specified external charge-pump capacitors.
推荐
推荐产品汇总
工程参考数据： MAX202ID ——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 | MAX202EESE+T | MAX202EWE+ | TRS202E | MAX202IDG4 | MAX202CD |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Transceiver Configuration | 2/2 dual RS-232 | 2/2 dual RS-232 | 2/2 dual RS-232 | RS-232 transceiver; exact channel count not supplied | MAX202 family; 2/2 dual RS-232 | 2/2 dual RS-232 |
| ESD Protection | ±15 kV HBM | ±15 kV HBM family rating | 15 kV HBM family rating | Enhanced IEC61000-4-2 ESD protection | ±15 kV HBM family rating | ±15 kV HBM family rating |
| RS-232 Standard | TIA/EIA-232-F | MAX202 family RS-232 interface | MAX202 family RS-232 interface | RS-232 interface; exact standard not supplied | MAX202 family RS-232 interface | MAX202 family RS-232 interface |
关键差异点
- Integrated 2/2 RS-232 interface in a 16-SOIC package （对比 MAX232ECD)
- Verified 5 V operation with ±15 kV HBM ESD protection （对比 MAX202CD)
- 120 kbps dual-channel interface （对比 MAX202EESE+T)
设计说明
Place the four specified 0.1 µF charge-pump capacitors close to the MAX202ID pins identified in the datasheet. Keep the charge-pump loop compact and connect the capacitor returns to the device ground without routing through long, shared paths. The verified design intent is a 16-SOIC RS-232 interface, so preserving the recommended placement helps avoid startup and signal-integrity problems.
Do not treat the ±15 kV HBM specification as complete cable surge protection. The rating applies to the serial-port pins under the specified human-body-model test, while long external cables may introduce larger system-level transients. Use connector grounding, protective networks, or an appropriately rated surge-protection solution when the port is exposed to industrial or outdoor environments.
Keep RS-232 driver outputs away from sensitive logic, clock, and analog nets, and provide a short, continuous ground path between the IC and connector. Verify that the external system uses RS-232 rather than RS-485 voltage levels because the two interfaces are not electrically interchangeable. Place local VCC bypassing near the supply pin and route the charge-pump current away from the receiver input region.
合规信息
The supplied search results identify TIA/EIA-232-F and ITU V.28 references, but do not provide a verified RoHS, REACH, halogen-free, lead-free, or conflict-minerals declaration. Compliance values are therefore unknown rather than assumed.