MAX213ECAI+ - 5V RS-232 Transceiver, 15kV ESD, SSOP-28 | Maxim
料号： MAX213ECAI+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.18 | $7.18 |
| 10 | $6.47 | $64.70 |
| 100 | $5.73 | $573.00 |
| 500 | $5.13 | $2,565.00 |
| 1,000 | $4.55 | $4,550.00 |
MAX213ECAI+ 概述
A RS-232 transceiver is an interface IC that converts between TTL/CMOS logic levels (0V/5V) and the bipolar ±5V to ±15V signalling required by the RS-232 standard. It belongs to the broader family of line transceivers (RS-232, RS-422, RS-485), which themselves sit inside the interface ICs category and the larger umbrella of wired communication semiconductor components. By embedding the charge pump on-chip, the MAX213 eliminates the need for external ±12V supplies, simplifying PCB design in point-of-sale terminals, industrial controllers and embedded computing platforms.
Key features include ±15kV ESD protection on every transmitter output and receiver input (per HBM), four RS-232 drivers and five RS-232 receivers in the SSOP-28 footprint, tri-state TTL/CMOS compatible receiver outputs, and an integrated charge pump that requires only four external 0.1 µF capacitors. The device operates across the commercial 0°C to 70°C temperature range, and its low supply current (~20 mA typical, unloaded) suits battery-backed systems that must wake serial ports only during transactions.
Technically, the MAX213ECAI+ uses Maxim's BiCMOS process that combines bipolar drive transistors (for true ±5V RS-232 swing) with CMOS control logic. The charge pump runs as a voltage doubler and inverter from VCC=5V, generating V+ ≈ +10V and V- ≈ -10V which feed the driver output stages. Receivers implement a 0.8V/2.4V-thresholded Schmitt-trigger input structure with 5 kΩ pull-down resistors to ground, ensuring a defined logic-high output when the input is open-circuited. Internal slew-rate control limits data rates to ~120 kbps, which is well matched to legacy serial peripherals, debug consoles and embedded modem links.
Typical applications include industrial PCs and point-of-sale equipment needing multi-port serial expansion, embedded microcontroller debug consoles, GPS receivers and GSM/cellular modules with RS-232 interfaces, and legacy peripheral interfaces such as optical mice, bar-code scanners and serial printers where robust ±15kV ESD handling protects against hot-plug discharge.
When designing with this IC, keep charge-pump capacitor traces short (less than ~10 mm) and place the four 0.1 µF ceramics as close to C1+, C1-, C2+, C2- pins as possible. Reserve TVS diodes externally on the connector side for ESD events that exceed the on-chip rating, especially for cables longer than 3 metres.
This page consolidates distributor pricing, drop-in alternative MPNs and practical PCB layout notes that go beyond the manufacturer's datasheet, giving engineers a one-stop reference for selecting, sourcing and laying out the MAX213ECAI+.
直接替换替代料： MAX213ECAI+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MAX213ECAI
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX213CAI+
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX213EAI+
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX213ECAI+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX213ECAI+ 规格参数
| Product Type | RS-232 Transceiver (line driver/receiver) |
| Number of Drivers | 4 |
| Number of Receivers | 5 |
| Supply Voltage (VCC) | 4.5 V to 5.5 V (single +5V supply) |
| 数据速率 | up to 120 kbps |
| ESD Protection (HBM) | ±15 kV on transmitter outputs and receiver inputs |
| 工作温度 | 0 °C to +70 °C (commercial grade) |
| Receiver Output Type | Tri-state, TTL/CMOS compatible |
| Charge Pump | Integrated, requires 4 x 0.1 µF external caps |
| 封装 | 28-pin SSOP |
| 安装类型 | Surface Mount |
| Technology | RS-232, CMOS, BiCMOS process |
| MSL 等级 | 1 (unlimited floor life) |
| RoHS 状态 | Compliant |
| Lead-Free / Terminal Finish | Yes (Gull-Wing terminals, matte-tin) |
MAX213ECAI+ 引脚配置
| 引脚 1 | VCC — +5V supply input |
| 引脚 2 | V+ — Charge-pump +10V (typ) output |
| 引脚 3 | C1+ — Charge-pump capacitor 1 positive |
| 引脚 4 | C1- — Charge-pump capacitor 1 negative |
| 引脚 5 | C2+ — Charge-pump capacitor 2 positive |
| 引脚 6 | C2- — Charge-pump capacitor 2 negative |
| 引脚 7 | V- — Charge-pump -10V (typ) output |
| 引脚 8 | GND — Ground |
| 引脚 9 | T1OUT — RS-232 driver 1 output |
| 引脚 10 | T2OUT — RS-232 driver 2 output |
| 引脚 11 | T3OUT — RS-232 driver 3 output |
| 引脚 12 | T4OUT — RS-232 driver 4 output |
| 引脚 13 | R1IN — RS-232 receiver 1 input |
| 引脚 14 | R2IN — RS-232 receiver 2 input |
| 引脚 15 | R3IN — RS-232 receiver 3 input |
| 引脚 16 | R4IN — RS-232 receiver 4 input |
| 引脚 17 | R5IN — RS-232 receiver 5 input |
| 引脚 18 | R1OUT — TTL/CMOS receiver 1 output (tri-state) |
| 引脚 19 | R2OUT — TTL/CMOS receiver 2 output (tri-state) |
| 引脚 20 | R3OUT — TTL/CMOS receiver 3 output (tri-state) |
| 引脚 21 | R4OUT — TTL/CMOS receiver 4 output (tri-state) |
| 引脚 22 | R5OUT — TTL/CMOS receiver 5 output (tri-state) |
| 引脚 23 | EN — Receiver output enable (active high) |
| 引脚 24 | T1IN — TTL/CMOS driver 1 input |
| 引脚 25 | T2IN — TTL/CMOS driver 2 input |
| 引脚 26 | T3IN — TTL/CMOS driver 3 input |
| 引脚 27 | T4IN — TTL/CMOS driver 4 input |
| 引脚 28 | FORCEOFF — Active-low shutdown control |
典型应用
MAX213ECAI+ 适用于 6 应用s: Point-of-Sale (POS) Serial Expansion, Industrial PC and Embedded SBC Serial Ports, Embedded Debug Console Interface, GPS and Cellular Module Serial Interfaces, Medical and Laboratory RS-232 Instruments, Legacy Peripheral Interface (Mouse, Bar-Code Scanner, Serial Printer).
Point-of-Sale (POS) Serial Expansion
The MAX213ECAI+'s four RS-232 drivers and five RS-232 receivers map directly to the multi-port serial interfaces used in point-of-sale terminals, where credit-card readers, receipt printers, barcode scanners and cash-drawer triggers each require their own RS-232 channel. The integrated +5V charge pump removes the need for ±12V rails, simplifying the ATX-style power architecture of compact POS terminals. With ±15kV ESD protection, the device survives hot-plug events at the operator-facing DB-9 ports. Typical companion parts include microcontrollers such as the NXP S08 series and ASIC/SoC bridging chips; recommended companion MPN ADM3202ARNZ is on the XAIPART Site MPN list and supports auxiliary serial channels.
推荐
Industrial PC and Embedded SBC Serial Ports
Industrial single-board computers and embedded PCs commonly expose DB-9 RS-232 ports to legacy equipment such as CNC controllers, PLCs and serial instruments. The MAX213ECAI+ translates the TTL UART from the host CPU into RS-232 levels at up to 120 kbps, which is the maximum rate supported by the on-chip slew-rate control and matches common industrial protocols including Modbus RTU at 9.6/19.2/38.4 kbps. The integrated charge pump runs from a single +5V supply already present on the SBC, avoiding the inefficient inverting switching regulators needed for discrete ±12V RS-232 implementations. Recommended companion products include the S912XEG384J2CAL (Power Architecture MCU with 6 UARTs, on the XAIPART Site MPN list) and standard 0.1 µF X7R ceramic charge-pump capacitors.
推荐
Embedded Debug Console Interface
During firmware development, engineers route a UART from the target microcontroller to an external DB-9 connector so a PC running a serial terminal can capture boot logs and crash reports. The MAX213ECAI+ provides this conversion with one of its four driver channels, leaving the remaining channels free for application serial traffic such as GPS receivers or GSM modems. The device's commercial 0 °C to +70 °C temperature range suits lab and indoor test environments, while ±15 kV ESD protects the developer's serial cable and laptop port against static mishaps during bench work.
推荐
GPS and Cellular Module Serial Interfaces
GPS receivers and legacy GSM/GPRS modules expose their NMEA 0183 / AT command streams over RS-232. The MAX213ECAI+'s single-driver-per-channel architecture (T1IN → T1OUT, R1OUT ← R1IN, etc.) lets the engineer dedicate one driver/receiver pair to each module while preserving spare channels for sensor or display connectivity. Maximum 120 kbps data rate comfortably exceeds the 9.6 kbps NMEA rate of standard GPS modules and the 115.2 kbps ceiling of typical AT-command cellular modems, with significant margin against channel noise.
推荐
Medical and Laboratory RS-232 Instruments
Many laboratory instruments such as spectrophotometers, blood-gas analysers and centrifuges still expose RS-232 for data export to hospital information systems. The MAX213ECAI+'s commercial temperature range suits climate-controlled clinical environments, while its ±15kV ESD rating protects against static discharge during repeated cable connections at the device side. Combined with the single +5V supply, the part integrates easily into the medical-instrument's existing 5V logic rail, eliminating external DC-DC converters that would otherwise complicate IEC 60601 EMC compliance.
推荐
Legacy Peripheral Interface (Mouse, Bar-Code Scanner, Serial Printer)
Optical mice, hand-held barcode scanners and serial receipt printers remain RS-232 peripherals in warehouse and retail environments. The MAX213ECAI+'s 28-pin SSOP footprint fits compact cable-side PCBs, and its +/- 15 kV ESD rating shields the host equipment from cable-side discharges. The integrated charge-pump only requires four 0.1 µF capacitors, keeping the BOM small and the layout compact for embedded cable assemblies.
推荐
推荐产品汇总
工程参考数据： MAX213ECAI+ ——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 | MAX213ECAI | MAX213CAI+ | MAX213EAI+ | MAX213ECAI+T | ADM3202ARNZ |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Analog Devices |
| Package | SSOP-28 | SSOP-28 (same footprint) | SSOP-28 (same footprint) | SSOP-28 (same footprint) | SSOP-28 (same footprint) | SOIC-20 (different footprint, needs PCB rework) |
| Number of Drivers / Receivers | 4 / 5 | 4 / 5 | 4 / 5 | 4 / 5 | 4 / 5 | 2 / 2 - not equivalent channel count |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 3.0 V to 5.5 V (also 3.3V capable) |
| Data Rate | 120 kbps | 120 kbps | 120 kbps | 120 kbps | 120 kbps | 460 kbps (faster) |
| ESD Protection (HBM) | ±15 kV | ±15 kV | ±2 kV (lower) | ±15 kV | ±15 kV | ±15 kV (RS-232 pins) |
| Operating Temperature | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | -40 °C to +85 °C (industrial) | 0 °C to +70 °C | -40 °C to +85 °C (industrial) |
| External Caps Required | 4 x 0.1 µF | 4 x 0.1 µF | 4 x 0.1 µF | 4 x 0.1 µF | 4 x 0.1 µF | 4 x 0.1 µF |
关键差异点
- Highest channel count per package pin （对比 ADM3202ARNZ)
- ±15 kV ESD protection on all RS-232 pins （对比 MAX213CAI+)
- Industrial temperature option in same package （对比 MAX213EAI+)
设计说明
Place the four 0.1 µF charge-pump capacitors (C1, C2) within 3-5 mm of the C1+, C1-, C2+, C2- pins to minimise the switching-current loop area. Estimated: at 5V VCC the charge pump switches approximately every 1 µs; loop inductance above ~10 nH will produce ringing above 1 V peak, which can degrade the V+/V- rail stability and tilt the RS-232 driver output rise/fall times out of spec.
Do not place the charge-pump capacitors near noisy switching nodes such as buck-converter SW pins or RF antenna traces. The MAX213ECAI+'s charge pump is internally regulated but external noise coupling into V+ or V- will modulate the driver output levels and may show up as increased jitter on long cables. Keep a quiet ground pour under the IC and bypass VCC to GND with a local 1 µF + 100 nF combination.
The MAX213ECAI+'s 28-pin SSOP package has a 0.65 mm lead pitch, which is compatible with standard 4-mil trace/space fabrication. Route the four RS-232 output traces (T1OUT-T4OUT) away from high-frequency edges and, if possible, on the opposite side of the ground plane from the TTL input traces to minimise crosstalk. For cable-side ESD robustness beyond the on-chip ±15 kV, add an external TVS diode array (such as a PESD5V0L4UG or similar) within 10 mm of the connector.
合规信息
RoHS compliant per Mouser and Octopart listings; '+' suffix denotes lead-free matte-tin terminal finish. Not AEC-Q100 qualified - MAX213EAI+ is the industrial-temp grade in the same family.