ADM222AR - 200 kbps Dual RS-232 Transceiver | Analog Devices
부품 번호: ADM222AR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.92 | $19.20 |
| 100 | $1.92 | $192.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.92 | $1,920.00 |
ADM222AR 개요
An RS-232 transceiver is the interface category that connects a CMOS or TTL-based digital system to the bipolar signal domain used by serial equipment. The RS-232 driver converts logic-level signals into positive and negative voltage levels, while the receiver converts those bipolar levels back into logic-compatible signals. The ADM222 belongs to the broader interface IC hierarchy and combines line drivers, line receivers, and charge-pump circuitry in one package.
The ADM222AR provides two transmit channels and two receive channels, allowing bidirectional RS-232 links between two systems. Its 200 kbps data rate supports faster serial communication than many conventional RS-232 transceivers. The 0.1 µF charge-pump capacitors reduce external capacitance requirements, while the shutdown pin can reduce supply current to 0.1 µA according to the manufacturer product information.
Its 5 V supply architecture simplifies integration with digital logic. The on-board DC-DC converter develops the positive and negative voltage levels needed for RS-232 transmission, while the 9 V output swing and 30 V receiver input range provide useful line-level margin. The device is identified as a 2/2 full RS-232 transceiver and is available in the 18-SOIC surface-mount package denoted by the DigiKey listing.
Typical uses include RS-232 test equipment, instrumentation, industrial serial links, data acquisition systems, and legacy peripheral connections. Designers should verify the exact package pinout and line-level timing requirements in the Analog Devices datasheet before layout. Charge-pump capacitor placement and supply decoupling remain important because they influence output voltage generation and signal integrity.
This page consolidates verified Analog Devices product information, distributor package details, technical feature data, and practical RS-232 design guidance. It also distinguishes the ADM222AR from functional alternatives by emphasizing the verified 18-SOIC package, 200 kbps rate, 5 V operation, and shutdown function.
드롭인 대체품: ADM222AR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ADM222AR (동일 폼 팩터 및 풋프린트) — 차이점: Package.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ADM222ARZ
✅ 드롭인✓ 재고 있음
$2.1 / 개
데이터시트 보기 →MAX222IDW
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX222IDWR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADM222AR 사양
| Product Type | RS-232 transceiver |
| 공급 전압 | 5 V |
| Transmission Rate | 200 kbps |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Charge-Pump Capacitor | 0.1 µF |
| RS-232 Output Swing | 9 V |
| Receiver Input Voltage | 30 V |
| Shutdown Supply Current | 0.1 µA |
| Standard Compliance | EIA-232-E and V.28 |
| DC-DC Converter | On-board |
| 인터페이스 유형 | Full RS-232 |
| 패키지 | 18-SOIC |
| 실장 유형 | Surface Mount |
ADM222AR 18-soic 핀 구성 가이드
ADM222AR(18-soic 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: ADM222AR.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ADM222AR 적합 용도: 6 애플리케이션s: RS-232 Test and Measurement Equipment, Industrial Serial Data Acquisition, Legacy Peripheral Connectivity, Data Loggers and Programmable Instruments, Communication and Network Equipment, Shutdown-Controlled Embedded Systems.
RS-232 Test and Measurement Equipment
The ADM222AR fits legacy RS-232 control and data links in test instruments because it combines two drivers, two receivers, a 200 kbps rate, and a single 5 V supply. It can be placed between a controller and an instrument when the system needs both transmit and receive paths. The integrated charge pump accepts 0.1 µF capacitors, reducing the external support circuitry required for bipolar RS-232 levels. Confirm the instrument’s connector pinout and cable shielding before deployment.
추천
Industrial Serial Data Acquisition
The ADM222AR is suitable for industrial serial data-acquisition equipment that still relies on RS-232 communications but operates from a 5 V digital rail. Its 200 kbps transmission rate provides a higher communication rate than traditional low-speed RS-232 links, while the two-driver, two-receiver arrangement supports bidirectional control and measurement data. Use the EIA-232-E and V.28 requirements as the baseline, then validate cable length, grounding, and noise immunity in the installed system.
추천
Legacy Peripheral Connectivity
The ADM222AR can provide the physical interface between a modern controller and a legacy RS-232 peripheral. Two integrated drivers and two receivers allow the controller to send commands and receive responses without separate line-driver ICs. Its 5 V operation simplifies connection to digital logic, while the shutdown pin can disable the transceiver during idle periods and reduce supply current to 0.1 µA according to Analog Devices product information.
추천
Data Loggers and Programmable Instruments
A data logger or programmable instrument can use the ADM222AR for host-to-device command exchange and result transfer. The 200 kbps data rate is useful for systems that need responsive RS-232 communication, and the integrated DC-DC converter generates the required bipolar levels from one 5 V supply. Keep the charge-pump and interface traces short, provide local supply decoupling, and confirm the device’s operating-temperature requirements before using it in field equipment.
추천
Communication and Network Equipment
The ADM222AR can be used in communication equipment that still exposes an RS-232 management or service port. Its two transmit and two receive channels support bidirectional service-console connections, while the 5 V supply requirement is convenient for systems built around digital controllers. The device should be paired with appropriate serial connectors, transient protection, and cable routing; the supplied data does not specify external ESD or surge-protection components.
추천
Shutdown-Controlled Embedded Systems
Embedded systems can use the ADM222AR shutdown control to reduce power when an RS-232 port is not actively used. The Analog Devices product information states that the shutdown function can reduce supply current to 0.1 µA. This makes the device suitable for power-conscious controllers that periodically wake, exchange data, and return the transceiver to a disabled state. The host firmware must manage the shutdown pin and wake timing correctly.
추천
추천 제품 요약
엔지니어링 참조 데이터: ADM222AR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADM222 | MAX222IDW | MAX222IDWR |
|---|---|---|---|---|
| Package | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC |
| Brand | Analog Devices | Analog Devices | Maxim Integrated | Maxim Integrated |
| Drivers | 2 | 2 | 2 | 2 |
| Receivers | 2 | 2 | 2 | 2 |
주요 차별점
- Single 5 V RS-232 operation with integrated charge pump (vs MAX222IDW)
- 200 kbps transmission rate (vs MAX222IDWR)
- Shutdown control and low shutdown current (vs MAX222IDW)
설계 노트
Keep the ADM222AR charge-pump capacitor connections short and place the capacitors close to the pins specified by the Analog Devices reference layout. The verified device uses 0.1 µF capacitors, but the supplied data does not include exact land patterns, capacitor voltage ratings, or placement coordinates. Use the manufacturer datasheet and reference layout as the authority during PCB implementation.
Provide a clean 5 V supply and local decoupling near the ADM222AR. The integrated charge pump derives the positive and negative RS-232 levels from the single supply, so supply noise and ground-return paths can affect transmitted levels and receiver behavior. Confirm the manufacturer’s recommended capacitor network and bypass requirements before releasing the schematic.
Do not assume that any dual-driver, dual-receiver RS-232 IC is automatically replaceable. Verify the 18-SOIC footprint, every pin name, shutdown polarity, charge-pump pin assignments, receiver thresholds, and timing limits against the complete datasheets. The supplied search results identify MAX222 comparison candidates, but do not fully establish pin-for-pin equivalence.
For cable-attached RS-232 links, keep the transceiver-side traces compact and connect the signal-ground reference properly according to the system architecture. The verified ADM222AR data specifies a 200 kbps rate and 30 V receiver input capability, but it does not specify the complete system-level ESD, surge, or cable-length limits. Add appropriate protection only after checking the required standards and interface topology.
규정 준수 정보
The supplied verified data contains EIA-232-E and V.28 interface requirements but does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
