LM111-MW8 - High-Speed Voltage Comparator | Texas Instruments
MPN: LM111-MW8 ✗ סוף ייצורLM111-MW8 סקירה
A voltage comparator is an analog integrated circuit that compares two input voltages and changes its output state when the differential input crosses a defined threshold. The LM111 belongs to the comparator, analog IC, and signal-conditioning hierarchy rather than the operational-amplifier category, although it can be used in threshold detection, sensing, pulse-width, and control circuits. Its wide supply compatibility allows the same device family to interface with traditional analog rails and lower-voltage logic systems.
The LM111 family is specified as a single high-speed voltage comparator. The verified material specifically cites maximum input bias current of 300 nA and maximum input offset current of 70 nA, along with operation from a single 5 V supply. These characteristics are relevant where low input loading and precise threshold behavior are important. The output levels are stated to be compatible with most TTL and MOS circuits, which supports use as a decision element between analog signals and digital control logic.
Typical comparator applications include level crossing, overvoltage and undervoltage indication, signal translation, pulse generation, window detection, and interface conditioning. The fast-response description is useful when the comparator must resolve changing waveforms rather than merely provide static threshold monitoring. The published family material also mentions strobe capability, but the exact LM111-MW8 operating conditions and timing values require confirmation in the manufacturer datasheet before design release.
Because the provided data does not specify the LM111-MW8 package dimensions, pin names, temperature grade, or exact electrical maximums, those values must be verified against the official Texas Instruments documentation. Do not assume that a similarly named LM111, LM211, or LM311 orderable part is mechanically interchangeable. In particular, LM211 and LM311 are distinct family variants and may have different supply, temperature, or output requirements.
This page consolidates the verified Texas Instruments family description, distributor discovery information, and official datasheet references. It also separates confirmed facts from missing LM111-MW8-specific data so engineers can plan sourcing and schematic review without treating unverified package or performance details as specifications.
חלופות תחליף ישיר עבור LM111-MW8 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LM111-MW8 (אותו גורם צורה וטביעת רגל) — שונים ב Product Type.
LM111MW8
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LM111
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LM211
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LM311
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LT1011
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
LM111-MW8 דירוגים מרביים ומאפיינים חשמליים
| Product Type | Single high-speed voltage comparator |
| Comparator Function | Differential voltage comparison |
| Supply Compatibility | Wide-range power supplies |
| Supported Supply Example | ±15 V operational-amplifier supplies |
| Logic Supply Compatibility | 5 V logic systems |
| Output Logic Compatibility | Compatible with most TTL and MOS circuits |
| Maximum Input Bias Current | 300 nA |
| Maximum Input Offset Current | 70 nA |
| Response Class | High-speed comparator |
| Single-Supply Operation | Operates from a single 5 V supply |
| Strobe Capability | Mentioned in verified family data |
| Automotive Configuration Availability | Automotive configuration information mentioned in family search data |
| Manufacturer | Texas Instruments |
מדריך תצורת פינים של LM111-MW8 standard
תצורת פינים עבור LM111-MW8 (מארזת standard). רכיב אנלוגי זה כולל פיני כניסה, יציאה ואספקת מתח. יש לעיין בגיליון הנתונים של היצרן לתצורות פיני איפוס היסט, פיצוי והפעלה. אידיאלי למעגלי עיצוב אותות ומגברים.
אין נתוני פריסת פינים מפורטים עבור LM111-MW8.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
LM111-MW8 מתאים עבור 6 יישוםs: 5 V Logic Threshold Detection, Overvoltage and Undervoltage Indication, Pulse and Edge Generation, Analog Signal Conditioning, Power-Supply Monitoring, Test and Measurement Triggering.
5 V Logic Threshold Detection
The Texas Instruments LM111-MW8 is suitable for detecting whether a 5 V-referenced analog signal has crossed a decision threshold. The verified family data confirms operation from a single 5 V supply and output compatibility with most TTL and MOS circuits, so the comparator can bridge an analog sensing node and downstream digital logic. Its high-speed classification helps when the input changes quickly, while the 300 nA maximum input bias current specification is useful for high-impedance sensing networks. The exact input common-mode range, propagation delay, output state, and package pinout must be verified before layout because those LM111-MW8-specific values are not included in the supplied data.
מומלץ
Overvoltage and Undervoltage Indication
LM111-MW8 can be used as a voltage-window or rail-monitor element when a system needs a fast decision signal indicating that a measured voltage is above or below a limit. The confirmed maximum input bias current of 300 nA reduces the error introduced by high-value sensing resistors, while the single high-speed comparator architecture is appropriate for transitions that must be resolved promptly. The verified output compatibility with most TTL and MOS circuits allows the result to feed a controller or display driver. Supply limits, threshold accuracy, input common-mode range, and the exact LM111-MW8 pin arrangement are not provided and must be checked in the manufacturer documentation.
מומלץ
Pulse and Edge Generation
The LM111 family’s high-speed voltage-comparator behavior makes LM111-MW8 relevant to pulse generation, edge detection, and threshold-triggered timing circuits. A changing input waveform can be compared against a reference voltage, producing a digital transition for downstream timing or control logic. The verified family material also mentions strobe capability, which may be useful in coordinated switching designs, although the exact LM111-MW8 strobe timing and electrical conditions are not supplied. Engineers should confirm propagation delay, input recovery behavior, output drive, and supply requirements before relying on pulse width or delay calculations.
מומלץ
Analog Signal Conditioning
LM111-MW8 can condition a weak or slowly changing analog signal by comparing it with a reference and presenting a logic-compatible decision to a counter, capture circuit, or control input. The verified 300 nA maximum input bias current is the key figure for source-impedance analysis, because input current flowing through a sensor or divider can shift the apparent threshold. The output levels are compatible with most TTL and MOS circuits, supporting interface design without immediately adding another converter. Exact input offset voltage, offset drift, common-mode range, and output timing for the exact LM111-MW8 suffix remain unverified and should be obtained from the datasheet.
מומלץ
Power-Supply Monitoring
LM111-MW8 can support a power-supply supervision function by comparing a scaled supply voltage with a reference and driving a digital alert when the monitored rail crosses its limit. The confirmed compatibility with ±15 V operational-amplifier supply systems is relevant to conventional analog equipment, while the stated 5 V compatibility supports mixed-signal and logic-powered designs. Because the provided data does not specify the exact input common-mode range or supply limits, the divider and reference network must be designed only after those values are confirmed from the official datasheet. The comparator’s low input bias current helps reduce divider-induced threshold error.
מומלץ
Test and Measurement Triggering
The LM111-MW8 is potentially useful in test and measurement equipment as a fast threshold detector for waveform, ramp, or sensor signals. A comparator output can indicate when an input crosses a selected reference and initiate a capture, alarm, or measurement sequence. Its high-speed description makes it more relevant than a general-purpose slow comparator for changing waveforms, and the confirmed TTL and MOS output compatibility can simplify connection to digital acquisition logic. The provided material does not specify LM111-MW8 input capacitance, propagation delay, output rise and fall time, or package pinout, so these parameters must be validated before selecting timing margins or laying out the circuit.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LM111-MW8 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | LM111MW8 | LM111 | LM211 | LM311 | LT1011 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
מבדילים עיקריים
- Wide supply-system compatibility (לעומתLM211)
- Low input bias current (לעומתLT1011)
- Input offset current specification (לעומתLT1011)
- Logic-interface orientation (לעומתGeneric comparator alternatives)
הערות תכנון
Before using LM111-MW8 in a new rail, verify the exact device supply-voltage limits, input common-mode range, and output levels in the official Texas Instruments documentation. The family description confirms compatibility with ±15 V supplies and 5 V logic systems, but it does not provide the complete LM111-MW8 operating envelope. Do not infer the limits from LM211 or LM311 documentation. Check input and output absolute maximum ratings, supply decoupling requirements, and the voltage applied to every pin during power-up and fault conditions.
Place the comparator input, reference, and output paths according to the exact verified pinout once the LM111-MW8 package is confirmed. Keep high-impedance input traces short, use a stable reference node, and provide local supply bypassing close to the device. Because the verified maximum input bias current is 300 nA, high-value divider resistors can create meaningful threshold error; calculate the resulting bias-current shift from the actual source impedance before finalizing resistor values.
Do not substitute LM111, LM211, LM311, or LT1011 solely because the names are related or a family description says pin compatible. Validate the exact package, pin numbering, input polarity, output configuration, supply limits, temperature grade, and propagation timing for the replacement. Also account for the LM111-MW8 suffix and possible wafer-sale or special-yield purchasing conditions identified by the distributor search. A symbol-compatible schematic is not sufficient evidence of mechanical or electrical drop-in compatibility.
For fast threshold or pulse-generation circuits, verify propagation delay, input recovery, output rise and fall time, and output loading before setting timing margins. The supplied material calls the LM111 family high speed but does not state numerical LM111-MW8 timing values. Use the manufacturer datasheet and a worst-case supply, temperature, and load evaluation. Keep the reference node quiet and avoid routing the comparator input beside switching-current paths, especially when the input source impedance is high.
מידע על תאימות
The provided data does not explicitly state LM111-MW8 RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Family-level automotive wording is not sufficient to qualify the exact LM111-MW8 orderable part.
