MC3302D - Quad 3-36 V Comparator | onsemi | Analog IC
MPN: MC3302D ✓ نشطMC3302D نظرة عامة
A voltage comparator is an analog integrated circuit that compares two input voltages and changes its output state when the difference between them changes sign. The MC3302D belongs to the comparator hierarchy within analog and amplifier ICs, where precise threshold comparison is used to convert an analog condition into a digital decision for control logic, protection circuits, sensing systems, and memory interfaces.
Each of the four MC3302D channels is independent, allowing one package to implement four separate threshold decisions. The verified source describes the series as a precision single-supply quad comparator with offset voltage down to 2.0 mV maximum. It also identifies 25 nA typical input bias current and plus or minus 5 nA typical input offset current for the related MC3302DR2G description, useful characteristics when the design must limit input loading or offset-related switching errors.
The device supports operation from a 3 V to 36 V supply and can also operate from dual supplies when the supply constraints are satisfied. The cited comparison information states that dual-supply operation is possible when the difference between supplies remains between 2 V and 28 V and VCC is at least 1.5 V more positive than the negative supply. These details make the comparator suitable for both compact low-voltage systems and wider industrial rails.
Typical uses include level detection, low-level sensing, memory applications, and consumer, automotive, or industrial electronic equipment. In each case, the four independent channels can monitor separate thresholds without requiring four separate comparator packages, reducing component count while preserving independent decision paths.
Designers should verify input common-mode limits, output configuration, propagation delay, input overvoltage behavior, and input/output pin functions against the manufacturer datasheet before finalizing a board. The verified data does not provide a complete pin table or all timing limits, so those parameters should not be inferred from the broader LM139-family description.
This page consolidates the verified onsemi product information, distributor pricing and availability, cross-reference candidates, and practical application guidance. It distinguishes confirmed ratings from parameters requiring direct datasheet confirmation, helping engineers evaluate MC3302D without relying on incomplete distributor summaries.
بدائل مباشرة لـ MC3302D — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع MC3302D (نفس عامل الشكل والبصمة) — يختلف في Input Bias Current, Input Offset Current, Output Type, Automotive Application, Comparator Count.
LM3302D
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
LM139D
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
LM239D
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←LM339D
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←LM2901D
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MC3302D الحدود القصوى والخصائص الكهربائية
| Comparator Count | 4 independent channels |
| Product Type | Precision quad voltage comparator |
| Single-Supply Operating Voltage | 3 V to 36 V |
| Maximum Offset Voltage per Channel | 2.0 mV maximum |
| Input Bias Current | 25 nA typical |
| Input Offset Current | +/-5 nA typical |
| نطاق درجة حرارة التشغيل | -40 C to +105 C |
| Dual-Supply Voltage Difference | 2 V to 28 V |
| Minimum VCC Offset from Negative Supply | 1.5 V minimum |
| Supply Configuration | Single supply or dual supply |
| Package Pin Count | 14 leads |
| Package Type | 14-lead small-outline package |
| نوع التركيب | Surface mount |
| Primary Function | Level detection and low-level sensing |
| Additional Application | Memory applications |
| حالة RoHS | unknown |
| REACH Status | unknown |
دليل تكوين أطراف MC3302D 14-lead small-outline package
تكوين الأطراف لـ MC3302D (حزمة 14-lead small-outline package). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ MC3302D.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
MC3302D مناسب لـ 6 التطبيقs: Industrial Level Detection, Low-Level Sensing, Memory Interface Control, Automotive Monitoring Circuit, Consumer Threshold Control, Dual-Supply Signal Comparison.
Industrial Level Detection
The MC3302D fits industrial level-detection circuits because it combines four independent comparator channels with a 3 V to 36 V single-supply operating range. Each channel can compare a sensed voltage against a reference and produce a threshold decision for control equipment, alarm logic, or monitoring systems. The verified maximum offset of 2.0 mV helps preserve the intended switching point, while the -40 C to +105 C rating supports equipment operating across a broad temperature range. Because input common-mode and output limits are not fully documented in the supplied summary, designers should confirm them against the manufacturer datasheet for the actual sensor and supply rails.
موصى به
Low-Level Sensing
The MC3302D is suitable for low-level sensing because its four precision channels can evaluate small voltage differences without occupying four separate packages. The verified 25 nA typical input bias current and plus or minus 5 nA typical input offset current help limit errors when the sensed source has relatively high impedance. The 2.0 mV maximum offset characteristic also supports accurate threshold placement. A practical design would use one channel for signal conditioning and comparison, then use the remaining channels for fault detection or state confirmation. Input bias-current behavior, common-mode range, and channel-to-channel matching must still be checked in the complete datasheet.
موصى به
Memory Interface Control
The MC3302D is identified by onsemi for memory applications, where independent voltage comparisons can support read, write, threshold, or state-detection functions. Its 3 V to 36 V supply capability allows use in systems spanning low-voltage logic and wider industrial rails. Four independent channels provide flexibility for placing several threshold decisions in one 14-lead package, reducing board area compared with separate single-channel comparators. The comparator is used as a discrete analog-to-digital decision element rather than as a memory controller itself. Logic levels, output rise and fall behavior, propagation delay, and allowable input signals should be verified against the memory interface requirements and the manufacturer datasheet.
موصى به
Automotive Monitoring Circuit
The MC3302D's verified -40 C to +105 C operating range and 3 V to 36 V supply capability make it a candidate for automotive monitoring functions such as battery, actuator, or signal-threshold supervision. Its four independent channels allow multiple vehicle electrical conditions to be checked with one comparator package. The low offset specification, as low as 2.0 mV maximum, can support accurate switching points when sensing small system variations. However, the supplied data does not state that the MC3302D is AEC-Q100 qualified, and no automotive qualification claim should be inferred from its temperature range. Confirm the exact ordering variant, transient requirements, and qualification status before using it in a safety- or vehicle-critical circuit.
موصى به
Consumer Threshold Control
The MC3302D supports compact consumer circuits that require several independent voltage-threshold decisions. Four comparators in one 14-lead surface-mount package can monitor battery, display, keypad, or control signals while operating from a supply between 3 V and 36 V. The verified 2.0 mV maximum offset characteristic helps reduce transition-point error, while the 25 nA typical input bias current supports higher-impedance sensing arrangements. The selected MC3302D part can therefore consolidate multiple comparator functions and reduce component count. Before layout release, verify the output format, input common-mode range, supply sequencing requirements, and whether the chosen tape-and-reel or tube packing matches the assembly process.
موصى به
Dual-Supply Signal Comparison
The MC3302D can also support dual-supply signal-comparison arrangements when the verified supply constraints are met: the difference between supplies must remain from 2 V to 28 V, and VCC must be at least 1.5 V more positive than the negative supply. This makes it useful for bipolar sensing where the monitored signal may be referenced around ground. The four independent channels can perform several comparisons against positive or negative references, subject to the input common-mode limits. Because the supplied data does not fully specify those common-mode limits, the complete manufacturer datasheet is essential when signals approach either supply rail or when dual-supply operation is safety-critical.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MC3302D — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | LM3302D | LM139D | LM239D | LM339D | LM2901D |
|---|---|---|---|---|---|---|
| Package | SOIC-14, 14 leads | SOIC-14, 14 leads | SOIC-14, 14 leads | SOIC-14, 14 leads | SOIC-14, 14 leads | SOIC-14, 14 leads |
| Brand | onsemi | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Comparator Count | 4 independent channels | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels |
أبرز الفروقات
- Confirmed onsemi single-supply operating range (مقابلLM3302D)
- Documented precision offset characteristic (مقابلLM139D)
- Wide verified temperature coverage (مقابلLM239D)
- Four independent channels in one package (مقابلLM2901D)
- Verified input-current characteristics (مقابلLM339D)
ملاحظات التصميم
Verify the complete power-supply operating envelope before applying the MC3302D. The confirmed single-supply range is 3 V to 36 V. For dual-supply operation, the cited comparison data requires a 2 V to 28 V difference between supplies and requires VCC to be at least 1.5 V more positive than the negative rail. Design the input and output pins for the maximum voltage they may encounter, because a 36 V capable supply rating does not by itself establish the safe voltage range of every comparator input.
Place the reference or sensed-signal path close to the associated comparator inputs to minimize pickup and voltage errors. The verified 25 nA typical input bias current is relevant for high-impedance sources, so excessive trace leakage, contamination, or unintended nearby leakage paths can move the comparison threshold. Keep sensitive input nodes away from switching nodes and maintain a stable ground reference between the comparator and the surrounding control circuitry.
Do not assume that every LM-family pin-compatible comparator is an unconditional substitute for MC3302D. The cross-reference establishes physical compatibility and retains four channels, but supply limits, common-mode range, output structure, propagation delay, offset, and temperature grade must be compared. In particular, confirm that the alternative's output can directly drive the existing pull-up or interface and that its 3 V to 36 V class operating range covers every supply condition used by the target board.
Use the four channels independently and label each comparator's positive and negative inputs, supply, ground, and output in the schematic before routing the board. The supplied verified data does not include the manufacturer pin table, so routing must be based on the exact datasheet rather than on a generic LM139-family drawing. Confirm the physical orientation and pin-1 marker on the 14-lead package to avoid reversing the outline or creating an input-output routing error.
معلومات الامتثال
The verified data does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for MC3302D. The stated automotive suitability is an application description and must not be interpreted as AEC-Q100 qualification.
