MAX3221ECDBRG4 - 3V-5.5V Single RS-232 Transceiver | TI
MPN: MAX3221ECDBRG4 ✓ Hoạt độngMAX3221ECDBRG4 Tóm tắt
An RS-232 transceiver is an interface IC that converts logic-level signals into RS-232-compatible voltage levels and restores incoming RS-232 signals to logic-compatible levels. It belongs to the interface IC hierarchy, where it connects digital logic or microcontrollers to legacy peripheral ports. The MAX3221E family also uses on-chip charge-pump circuitry to generate the bipolar voltage levels required by RS-232 without a separate negative supply.
Key features include operation from 3 V to 5.5 V, one driver and one receiver, ±15 kV human-body-model ESD protection, ±8 kV IEC 61000-4-2 contact discharge protection, and ±15 kV air-gap discharge protection. The device uses four external 0.1 µF charge-pump capacitors. Its 16-SSOP surface-mount package supports compact industrial-control, instrumentation, and embedded equipment layouts.
The MAX3221E architecture provides the electrical interface required by asynchronous serial systems. A single external capacitor at each charge-pump node supports the internal voltage conversion, while the driver presents the bipolar voltage levels expected by an RS-232 port and the receiver converts those levels back to digital logic. This integration simplifies PCB area compared with discrete level-shifting and charge-pump networks.
Typical applications include debug-console connections, industrial serial adapters, point-of-sale equipment, test and measurement instruments, and embedded systems that retain an RS-232 port. For new designs, an RS-232 transceiver is most useful when an existing host or peripheral expects the physical RS-232 interface rather than USB, RS-485, or a proprietary differential link.
Place the four 0.1 µF charge-pump capacitors close to their designated pins and route the driver output and receiver input traces away from sensitive analog or high-speed digital nodes. Confirm the board ground and cable shield arrangement before field deployment because connector-level ESD protection alone does not eliminate conducted noise entering through the cable.
This product record combines the MAX3221ECDBRG4 electrical characteristics, package information, interface ratings, drop-in alternatives, comparison parameters, and practical layout guidance in one engineering-focused reference. It supports component selection, PCB footprint review, and RS-232 interface design without relying on a generic interface-IC overview.
Bộ thay thế dễ dàng lắp đặt cho MAX3221ECDBRG4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MAX3221ECDBRG4 (cùng hình factor và footprint) — khác nhau ở Number of Drivers, Number of Receivers, Package, Product Type.
MAX3221IDBR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX3221ECDBR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX3221ECDBRG4 Thông số kỹ thuật
| Product Type | Single-channel RS-232 line driver and receiver |
| Number of Drivers | 1 driver |
| Number of Receivers | 1 receiver |
| Supply Voltage Range | 3 V to 5.5 V |
| Interface Standard | RS-232; TIA/EIA-232-F compliant |
| Human-Body-Model ESD Protection | ±15 kV |
| IEC 61000-4-2 Contact Discharge | ±8 kV |
| IEC 61000-4-2 Air-Gap Discharge | ±15 kV |
| External Charge-Pump Capacitors | 4 × 0.1 µF |
| Hộp | 16-SSOP, 5.30 mm width |
| Kiểu lắp đặt | Surface mount |
| Packaging | Digi-Reel |
| Nhiệt độ hoạt động | 0 °C to +70 °C |
| Lead-Free Status | Lead-free |
| Green Product Status | Green product |
Hướng dẫn cấu hình chân MAX3221ECDBRG4 16-ssop, 5.30 mm width
Cấu hình chân cho MAX3221ECDBRG4 (16-ssop, 5.30 mm width gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho MAX3221ECDBRG4.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MAX3221ECDBRG4 phù hợp cho 6 Áp dụngs: Embedded Debug Console, Industrial Serial Adapter, Point-of-Sale Terminal, Test and Measurement Instrument, Instrumentation Data Link, Legacy Equipment Upgrade.
Embedded Debug Console
The MAX3221ECDBRG4 fits an embedded debug console because it combines one RS-232 driver and one receiver in a compact 16-SSOP package while operating from 3 V to 5.5 V. Connect its logic-side signals to the host UART and its line-side signals to the serial connector through the appropriate protection network. The four 0.1 µF charge-pump capacitors should be placed close to their associated pins. This arrangement preserves a conventional service interface without requiring a negative supply, although the final USB-to-RS-232 adapter used for modern computers may need an additional interface.
Được đề xuất
Industrial Serial Adapter
The MAX3221ECDBRG4 is appropriate for a compact industrial serial adapter requiring one legacy RS-232 channel and a 3.3 V or 5 V supply. Its ±15 kV human-body-model, ±8 kV contact-discharge, and ±15 kV air-gap ratings help the line interface withstand cable-borne electrostatic events. Place the four 0.1 µF charge-pump capacitors close to the IC and keep the receive path away from switching nodes. The 0 °C to +70 °C range is suitable for indoor commercial-temperature equipment, but it may not cover wider industrial environments.
Được đề xuất
Point-of-Sale Terminal
A point-of-sale terminal can use the MAX3221ECDBRG4 to connect a legacy receipt printer, scanner, or customer-display controller through an RS-232 port. The single-driver, single-receiver arrangement supports one full-duplex serial link and avoids the area cost of a multi-channel transceiver. Operating from 3 V to 5.5 V supports common embedded logic rails, while the four external 0.1 µF capacitors implement the charge-pump function. Designers should confirm the host UART voltage, connector gender, cable length, and whether the peripheral uses hardware handshaking.
Được đề xuất
Test and Measurement Instrument
The MAX3221ECDBRG4 can provide the RS-232 control path in test and measurement instruments that retain a serial service or command port. Its 16-SSOP footprint leaves more board area than a multi-channel RS-232 transceiver, while the single channel is sufficient for one command link. The ±15 kV HBM and IEC 61000-4-2 ratings are useful when users connect external cables, but the instrument enclosure, cable shield, and ground-return design remain important parts of the protection strategy.
Được đề xuất
Instrumentation Data Link
The MAX3221ECDBRG4 supports a point-to-point RS-232 data link between a controller and an older laboratory instrument. One transmitter can send commands while the receiver handles responses, providing a compact full-duplex connection without a negative power rail. Keep the driver and receiver routes separated from precision analog circuitry and observe the datasheet’s four-capacitor charge-pump layout. Before deployment, verify the instrument’s logic thresholds, baud-rate requirement, and whether RS-232 control lines are required beyond the two primary data paths.
Được đề xuất
Legacy Equipment Upgrade
The MAX3221ECDBRG4 is useful when modernizing equipment that retains an RS-232 service connector but needs a compact, low-voltage interface stage. Its 3 V to 5.5 V operation can simplify integration with a 3.3 V controller, and the integrated charge-pump circuitry eliminates the need for a negative supply rail. The 16-SSOP package is larger than a minimal SOT device, so confirm PCB area before layout. A USB-to-RS-232 conversion path may still be required if the modernization project replaces the legacy host port.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX3221ECDBRG4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MAX3221IDBR | MAX3221ECDBR |
|---|---|---|---|
| Package | 16-SSOP | 16-SSOP | 16-SSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Device Type | Single-channel RS-232 transceiver | Single-channel RS-232 transceiver | Single-channel RS-232 transceiver |
| Number of Drivers / Receivers | 1 / 1 | 1 / 1 | 1 / 1 |
| Supply Voltage | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| ESD Protection | ±15 kV HBM; ±8 kV contact; ±15 kV air-gap | ±15 kV ESD protection | ±15 kV ESD protection |
| Interface Compliance | TIA/EIA-232-F | TIA/EIA-232-F | TIA/EIA-232-F |
| Mounting Type | Surface mount | Surface mount | Surface mount |
Bảo phân biệt quan trọng
- Single-channel integration limits board area versus multi-channel transceivers (vsMC3486NSR)
- ESD ratings are specified across three test methods (vsMAX3221IDBR)
- Operates directly from common low-voltage logic rails (vsMAX3221ECDBR)
Ghi chú thiết kế
Place all four 0.1 µF charge-pump capacitors adjacent to their designated MAX3221ECDBRG4 pins, with the shortest possible ground and capacitor connections. Keep the capacitor loops compact because the charge-pump nodes switch at high frequency and larger loops can radiate noise. Follow the manufacturer’s typical layout artwork for component spacing and ground-return geometry rather than treating the capacitors as generic bulk decoupling.
Route the RS-232 driver-output and receiver-input nets directly toward the connector while separating them from clocks, switching regulators, and sensitive analog inputs. The driver can transition between positive and negative RS-232 levels, so long parallel runs with digital signals may increase coupling. A solid ground plane beneath the interface section is preferable to a fragmented return path, while high-current return paths should not pass beneath the line-side circuitry.
Do not assume the IC’s ±15 kV ESD rating eliminates the need for a correctly designed cable and connector path. Confirm that the connector shield connects to the intended chassis or earth reference, specify a suitable cable, and evaluate whether additional protection is required for the full system. Also verify the 0 °C to +70 °C commercial operating range before using the device in extended-temperature equipment.
Thông tin tuân thủ
The component is described as a lead-free green product. RoHS, REACH, halogen-free, and conflict-minerals status require confirmation from the manufacturer’s current product documentation.
