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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | THVD1505 Bus-Polarity Correcting RS-485 Transceiver With IEC-ESD Protection datasheet | PDF | HTML | 2018年 1月 8日 |
| Application note | How to Properly Set Up THVD1505 and SN65HVD888 in Applications | PDF | HTML | 2021年 12月 15日 | |
| Technical article | How much loading can an auto-polarity RS-485 bus support? | PDF | HTML | 2018年 5月 24日 |
設計與開發
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RS485-HF-DPLX-EVM — RS-485 半雙工評估模組
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
| 封裝 | 引腳 | 下載 |
|---|---|---|
| SOIC (D) | 8 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。