ADM203JNZ - Dual 5V RS-232 Transceiver | Analog Devices
MPN: ADM203JNZ ✓ Hoạt độngADM203JNZ Tóm tắt
An RS-232 transceiver is an interface IC that converts logic-level TTL signals into differential, bipolar RS-232 line levels and converts incoming RS-232 signals back into logic-compatible levels. It belongs to the transceiver class within interface ICs and connects UART-based digital systems to serial ports, industrial equipment, data acquisition systems, and communications equipment. The ADM203JNZ combines drivers and receivers in one package while deriving the required positive and negative RS-232 voltage levels from a 5 V supply.
The principal features include dual RS-232 driver/receiver operation, a single +5 V supply, operation up to 120 kB/s, and fast driver slew rates. According to the manufacturer datasheet information identified in the verified search results, the high-drive-current implementation can also support extended cable lengths. The EIA-232-E and V.28 compliance statements provide useful context for systems designed around standardized RS-232 electrical behavior, while the integrated receiver and driver circuitry reduces the number of discrete interface components required.
The ADM203 series uses CMOS-compatible driver and receiver circuitry with external 0.1 µF charge-pump capacitors, eliminating the need for a separate bipolar supply. This architecture allows compact single-supply equipment while retaining the voltage translation required by RS-232. Designers must still account for the charge-pump capacitor tolerance, startup behavior, connector ground, cable routing, and the large voltage swings present at the physical interface.
Typical uses include serial-port adapters, industrial controllers, test and measurement instruments, point-of-sale terminals, data loggers, and embedded systems that expose a legacy RS-232 port. It is particularly appropriate when a board requires two RS-232 channels and the system uses a 5 V supply. A UART or other communications controller provides the parallel logic data, while the ADM203JNZ handles the physical-layer conversion.
Place the two 0.1 µF charge-pump capacitors close to their designated pins, maintain the datasheet-recommended loop area, and connect the interface reference ground to the circuit ground according to the layout guidance. Confirm signal polarity, receiver enable behavior, and cable length during design review. The 120 kB/s rating should not be interpreted as permission to use unshielded cabling at every installation distance because RS-232 cable performance remains system-dependent.
This product record combines the verified manufacturer-derived features, distributor availability references, packaging information, and drop-in comparison candidates in one engineering-focused view. It also distinguishes documented electrical attributes from unavailable pricing, lifecycle, environmental, and detailed pinout data rather than estimating missing values.
Bộ thay thế dễ dàng lắp đặt cho ADM203JNZ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
ADM202JNZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MAX203EPP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX203EPP+G36
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADM203JNZ Thông số kỹ thuật
| Product Type | Dual RS-232 transmitter/receiver interface IC |
| Number of Driver Channels | 2 channels |
| Number of Receiver Channels | 2 channels |
| Điện áp cung cấp | +5 V |
| Maximum Data Rate | 120 kB/s |
| Charge-Pump Capacitor Value | 0.1 µF |
| Logic Technology | CMOS |
| Interface Standard | EIA-232-E and V.28 |
| Hộp | 20-pin PDIP-N |
| Kiểu lắp đặt | Through-hole |
| Driver Slew Rate | Fast slew rate; numerical value not provided |
| Driver Output Current | High-drive-current operation; numerical value not provided |
Hướng dẫn cấu hình chân ADM203JNZ 20-pin pdip-n
Cấu hình chân cho ADM203JNZ (20-pin pdip-n 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 ADM203JNZ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADM203JNZ phù hợp cho 6 Áp dụngs: Industrial Serial Controllers, Data Acquisition Equipment, Point-of-Sale Terminals, Embedded Service Interfaces, Instrumentation and Test Equipment, Serial Port Adapters.
Industrial Serial Controllers
The ADM203JNZ fits industrial serial-controller boards that need two bidirectional RS-232 ports while operating from a 5 V logic rail. Its four-channel arrangement provides two transmitters and two receivers, and its documented 120 kB/s capability supports moderate-speed links to test equipment, machinery, and configuration systems. The device’s EIA-232-E and V.28 compliance gives the interface a recognized electrical basis, while high-drive-current operation supports extended cable use when the cable and grounding are appropriate. Place the 0.1 µF charge-pump capacitors close to their pins and route the RS-232 outputs away from sensitive logic. Because temperature limits, ESD ratings, and isolation were not provided, industrial deployment still requires environmental and grounding qualification.
Được đề xuất
Data Acquisition Equipment
The ADM203JNZ is suitable for laboratory and industrial data-acquisition equipment that must connect a controller or host to legacy RS-232 instruments. Two driver and two receiver channels provide useful bidirectional connectivity without requiring separate driver and receiver ICs. At up to 120 kB/s, the interface can transfer commands and measurements efficiently for many instrument-control protocols, while the +5 V supply simplifies integration with CMOS-based acquisition hardware. The key implementation consideration is signal integrity: keep charge-pump loops compact, use the recommended interface grounding arrangement, and validate cable performance at the intended distance. Unavailable ESD and temperature specifications must be checked before deploying the part in field or laboratory environments.
Được đề xuất
Point-of-Sale Terminals
The ADM203JNZ can provide legacy peripheral connectivity in a point-of-sale terminal that must support serial printers, scanners, or customer displays. The dual-transmitter, dual-receiver arrangement can cover multiple RS-232 ports while retaining a single +5 V supply, reducing the component count compared with separate line drivers and receivers. Its documented 120 kB/s maximum rate exceeds the needs of many peripheral control protocols, and the 20-pin PDIP-N package is practical for through-hole or mixed-technology assemblies. Designers should confirm connector signal assignments and logic polarity, keep the external 0.1 µF capacitors correctly located, and evaluate whether the enclosure and cable path require additional surge or ESD protection beyond the device’s verified specifications.
Được đề xuất
Embedded Service Interfaces
The ADM203JNZ is useful in embedded systems that retain a service or configuration port using RS-232. Two receive channels can support status or control inputs, while two transmit channels can drive an operator display, diagnostic tool, or service fixture. Operation from +5 V and support for 120 kB/s align with many embedded UART links, while the 20-pin PDIP-N package is useful for prototype, repair, and legacy-product boards. The interface should be enabled only when needed to reduce unnecessary activity, and the complete enable and shutdown behavior must be confirmed from the datasheet. Engineers should also avoid treating the logical UART connection as galvanic isolation; the verified excerpts do not establish isolation or robust industrial surge protection.
Được đề xuất
Instrumentation and Test Equipment
The ADM203JNZ is appropriate for instrumentation that exchanges commands and results with a host computer or peripheral instrument. The +5 V supply, two transmitters, and two receivers support practical multi-direction communication arrangements, while the 120 kB/s rate is sufficient for numerous legacy measurement-control protocols. Fast slew rates and high drive current are specifically identified as beneficial for extended cable lengths, but cable qualification remains necessary because RS-232 performance depends on wiring, grounding, interference, and the connected equipment. Follow the manufacturer’s charge-pump capacitor placement and pin layout exactly. Before production use in calibrated test equipment, review the full electrical limits, temperature range, and ESD characteristics that were not included in the supplied search excerpts.
Được đề xuất
Serial Port Adapters
The ADM203JNZ can serve as the core interface in a legacy serial-port adapter connected to a modern embedded controller. Its two driver and two receiver channels allow multiple RS-232 lines to be carried, while the +5 V supply and CMOS implementation align with contemporary embedded systems. The 120 kB/s maximum data rate supports many command protocols without requiring a modern differential physical layer. A practical adapter design must reproduce the verified pinout rather than rely on generic RS-232 assignments, provide the two 0.1 µF charge-pump capacitors, and use a connector ground strategy that limits loop area. Verify electrical levels and receiver enable polarity against the complete datasheet, and use an alternate interface such as RS-485 when long cables or noisy industrial environments are the primary requirement.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADM203JNZ — 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 | ADM202JNZ | MAX203EPP | MAX203EPP+G36 |
|---|---|---|---|---|
| Package | 20-pin PDIP-N | 20-pin PDIP-N | 20-pin PDIP-N | 20-pin PDIP-N |
| Brand | Analog Devices | Analog Devices | Maxim Integrated | Maxim Integrated |
| Device Type | Dual RS-232 transmitter/receiver | Dual RS-232 transmitter/receiver | RS-232 transceiver | +5 V RS-232 transceiver |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V |
| Standard Compliance | EIA-232-E and V.28 | EIA-232-E and V.28 | RS-232 and V.28 | RS-232 and V.28 |
Bảo phân biệt quan trọng
- Established Analog Devices dual-channel RS-232 integration (vsMAX203EPP)
- Same-family sourcing option (vsMAX203EPP+G36)
- Documented standards coverage (vsMAX203EPP)
Ghi chú thiết kế
Place both 0.1 µF charge-pump capacitors directly between their designated pins and ground, using the shortest possible traces and the smallest possible loop area. The verified ADM203 family information identifies these capacitors as part of the single +5 V implementation. Avoid routing the capacitor return current through noisy digital or power-conversion paths. Confirm the exact capacitor pin connections against the manufacturer diagram because the supplied excerpts do not provide a complete numbered pin table.
Do not treat the 120 kB/s datasheet capability as a guarantee that every RS-232 cable installation will work at that rate. Fast slew rates and high drive current support extended cable use, but external factors such as cable type, ground current, connector wiring, and interference can still cause errors. Validate the intended baud rate, cable length, and peripheral behavior at system level, and compare the target ADM203JNZ pinout against MAX203EPP or MAX203EPP+G36 before substituting either part.
Keep RS-232 driver outputs and external connector paths away from sensitive analog inputs, clock lines, and crystal circuits. Maintain a low-impedance common reference between the interface circuit and connected equipment, but follow the complete application guidance for connector ground placement. Because the verified excerpts do not establish the receive-enable logic, pin names, or isolation limits, PCB release should be gated on a pin-by-pin comparison with the manufacturer datasheet and any proposed drop-in replacement.
Thông tin tuân thủ
The supplied verified excerpts establish EIA-232-E and V.28 interface compliance but do not provide product-specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Those fields remain unknown rather than inferred.
