LM397
- TA = 25°C. Typical Values Unless Otherwise
Specified. - 5-Pin SOT-23 Package
- Industrial Operating Range −40°C to +85°C
- Single or Dual Power Supplies
- Wide Supply Voltage Range 5 V to 30 V
- Low Supply Current 300 µA
- Low Input Bias Current 7 nA
- Low Input Offset Current ±1 nA
- Low Input Offset Voltage ±2 mV
- Response Time 440 ns (50-mV Overdrive)
- Input Common-Mode Voltage 0 to VS – 1.5 V
The LM397 device is a single voltage comparator with an input common mode that includes ground. The LM397 is designed to operate from a single 5-V to 30-V power supply or a split power supply. Its low supply current is virtually independent of the magnitude of the supply voltage.
The LM397 features an open-collector output stage. This allows the connection of an external resistor at the output. The output can directly interface with TTL, CMOS and other logic levels, by tying the resistor to different voltage levels (level translator).
The LM397 is available in the space-saving 5-Pin SOT-23 package and is pin-compatible to TI’s TL331, a single differential comparator.
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檢視所有 5 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM397 Single General-Purpose Voltage Comparator datasheet (Rev. F) | PDF | HTML | 2016年 5月 24日 |
| Application note | Application Design Guidelines for LM339, LM393, TL331 Family Comparators Including the New B-versions (Rev. E) | PDF | HTML | 2024年 6月 6日 | |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 2024年 4月 30日 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
| More literature | Die D/S LM397 MDC Single Gen Purpose Voltage Comparator | 2012年 9月 27日 |
設計與開發
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模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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參考設計
TIPD144 — 具有磁滯功能的比較器參考設計
This TI Verified Design implements a comparator with hysteresis. Comparators are used to differentiate between two different signal levels. For example, a comparator may differentiate between an over temperature and normal temperature condition. Noise or signal variation at the (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
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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。