THVD1505
- Meets or exceeds the requirements of the TIA/EIA-485A standard and the State Grid Corporation of China (SGCC) Part 11 Serial Communication Protocol RS-485 standard
- 4.5-V to 5.5-V supply voltage
- Half-duplex RS-422 / RS-485
- Bus polarity correction within 45 ms
- Works with or without fail-safe biasing resistors
- Data rate: up to 1 Mbps
- Bus I/O
protection:
- ±16-kV HBM ESD
- ±8-kV IEC 61000-4-2 contact discharge
- ±8-kV IEC 61000-4-2 air-gap discharge
- ±2-kV IEC 61000-4-4 fast transient burst
- Open, short, and idle bus fail-safe
- Large receiver hysteresis
for noise rejection: 120 mV - Up to 256 nodes on a bus (1/8 unit load)
- Extended ambient temperature
range: -40°C to 125°C - Low power consumption
- Standby supply current: < 1 µA
- Operational supply current: < 1.1 mA
- Glitch-free power-up / down for hot plug-in capability
The THVD1505 is a low-power RS-485 transceiver with automatic bus-polarity correction and transient protection. Upon hot plug-in, the device detects and corrects the bus polarity within the first 45 ms of bus idling. The bus pins are robust to electrostatic discharge (ESD) events, with high levels of protection to human-body model (HBM), IEC 61000-4-2 contact discharge and air-gap discharge specifications.
The device combines a differential driver and a differential receiver, which operate together from a single 5-V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. The device features a wide common-mode voltage range making the device suitable for multi-point applications over long cable runs. The THVD1505 is available in an SOIC-8 package, and is characterized for free-air temperatures from –40°C to 125°C.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | THVD1505 Bus-Polarity Correcting RS-485 Transceiver With IEC-ESD Protection datasheet | PDF | HTML | 2018. 1. 8 | |
| 애플리케이션 노트 | How to Properly Set Up THVD1505 and SN65HVD888 in Applications | PDF | HTML | 2021. 12. 15 | ||
| 기술 문서 | How much loading can an auto-polarity RS-485 bus support? | PDF | HTML | 2018. 5. 24 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
RS485-HF-DPLX-EVM — RS-485 하프 듀플렉스 평가 모듈
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.