TS393MD - Micropower Dual CMOS Comparator | STMicroelectronics
Référence : TS393MD ✓ ActifTS393MD Présentation
A voltage comparator is an analog integrated circuit that compares an input voltage against a reference voltage and changes its output state when the relationship between those voltages changes. Comparators are used within analog signal chains, embedded control systems, and power management equipment. The TS393 belongs to the comparator family, the amplifier and analog IC hierarchy, and ultimately the broader integrated-circuit and semiconductor categories.
The TS393MD provides two CMOS comparator channels in one package, reducing component count in dual-threshold or dual-signal systems. Its open-drain outputs permit wired-AND behavior when suitable pull-up resistors are installed. High input impedance minimizes loading of the sensed source, while the 2.5 us typical response time supports applications that need meaningful response speed without the continuous power demand of a faster bipolar comparator.
The 9 uA typical supply current per comparator makes the device suitable for battery-operated instruments, portable monitors, and low-power sensor interfaces. STMicroelectronics describes the TS393 as compatible with the bipolar LM393 architecture, which can simplify comparison with conventional dual-comparator designs. The manufacturer also offers the similar TS3702 as a push-pull-output alternative, although its output topology is not interchangeable with the TS393MD open-drain interface without circuit changes.
Typical uses include battery-powered threshold detection, sensor signal conditioning, industrial control inputs, and low-power monitoring systems. In each case, the two channels can monitor independent quantities or provide complementary decisions around a reference voltage. The TS393MD is also suitable where the source impedance is high and the comparator should avoid materially loading the monitored node.
Designers should account for the open-drain output when selecting pull-up voltage and resistance. Input common-mode limits, supply-voltage range, offset behavior over temperature, and output sink-current capability must be checked in the manufacturer datasheet before finalizing a circuit. PCB placement should keep the comparator input paths short and away from high-current switching nodes to reduce noise coupling.
This page combines the manufacturer device description, distributor package information, practical application guidance, and verified drop-in replacement information. It also identifies the measurable differences among directly compatible SOIC-8 options, helping engineers compare output type, supply current, temperature range, and qualification requirements before making a board-level replacement.
Alternatives de remplacement direct pour TS393MD — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
TSX393
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NCV2393
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TS393DR2G
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TS393MD Valeurs maximales et caractéristiques électriques
| Comparator Type | Dual independent voltage comparator |
| Technology | CMOS |
| Comparator Count | 2 |
| Type de sortie | Open-drain |
| Supply Current Per Comparator | 9 uA typical |
| Input Impedance | 10^12 ohm typical |
| Response Time | 2.5 us typical |
| Input Offset Voltage | 6.5 mV maximum |
| Nominal Supply Voltage | 5 V |
| Plage de température de fonctionnement | -55 C to +125 C |
| Boîtier | 8-pin SOIC |
| Package Designation | 8-SOIC |
| Type de montage | Surface mount |
| LM393 Compatibility | Compatible with bipolar LM393 architecture |
Guide de configuration des broches du TS393MD 8-soic
Configuration des broches du TS393MD (boîtier 8-soic). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour TS393MD.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
TS393MD convient pour 6 applications: Battery-Powered Threshold Detection, Industrial Sensor Signal Conditioning, Portable Medical Monitoring, Battery Management Supervision, Wired-AND Fault Aggregation, Low-Power IoT Sensing Node.
Battery-Powered Threshold Detection
The TS393MD is well suited to battery-powered threshold detection because each comparator channel consumes only 9 uA typically. One channel can compare a sensor-derived voltage against a reference while the other monitors a second condition or supplies a complementary decision. Its 10^12 ohm typical input impedance avoids substantially loading a high-impedance sensing node, helping preserve battery-operated designs. The open-drain output should be pulled up to the appropriate local supply through a resistor selected from the output-voltage and current limits in the manufacturer datasheet.
Recommandé
Industrial Sensor Signal Conditioning
The TS393MD can convert a slowly changing sensor voltage into a clean binary decision for an industrial controller. Its 2.5 us typical response time is suitable for many monitoring and alarm functions, while the 10^12 ohm typical input impedance minimizes loading of the sensor front end. Two channels allow independent limits to be evaluated within one package. For factory equipment, keep the comparator input traces short, use a stable reference, and provide a pull-up for each open-drain output while confirming that industrial temperature and transient requirements are satisfied.
Recommandé
Portable Medical Monitoring
The TS393MD can support low-power monitoring functions in portable medical equipment where continuous current consumption is important. The 9 uA typical consumption per channel is favorable for battery-operated instruments, and the high input impedance helps avoid loading sensitive sensor networks. The two comparison channels can provide alarm thresholds or channel-selection logic. Actual medical-product suitability must be established at the system level through applicable risk, qualification, and validation procedures, while the comparator's exact electrical limits must be checked for the intended supply and sensor range.
Recommandé
Battery Management Supervision
The TS393MD can supervise battery or power-rail conditions by comparing a divided voltage against a reference. Its two independent channels support window-style supervision, such as detecting both undervoltage and overvoltage conditions, while the typical 9 uA current per comparator helps limit continuous overhead. The open-drain outputs can indicate fault conditions to a controller through pull-up resistors. Select the divider, reference, and hysteresis network for the actual cell chemistry and ensure that every monitored voltage remains inside the comparator's specified input common-mode range.
Recommandé
Wired-AND Fault Aggregation
The TS393MD's open-drain outputs are useful when several fault signals must be combined into one system alarm. Connect each output to a common pull-up node to form wired-AND behavior, allowing multiple comparator channels to pull the line low when a fault is present. The 2.5 us typical response time provides rapid detection for many system faults, while the 9 uA typical operating current per comparator supports compact power budget. Pull-up resistance must balance bus rise time against sink current, and output timing should be checked when multiple signals change simultaneously.
Recommandé
Low-Power IoT Sensing Node
The TS393MD is appropriate for a low-power IoT sensing node that must interpret an analog input without continuously energizing a higher-speed comparator. The 10^12 ohm typical input impedance reduces the effect of loading on resistive dividers or sensor outputs, and the 9 uA typical current per comparator is valuable in duty-cycled systems. Use one channel for a measurement threshold and the other for a wake-up or fault condition. The design must include suitable pull-up resistors and should verify input offsets and common-mode behavior over the complete battery discharge range.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TS393MD — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TSX393 | NCV2393 | TS393DR2G |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | onsemi | onsemi |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Comparator Configuration | Dual CMOS voltage comparator | Dual CMOS voltage comparator | Dual CMOS voltage comparator | Dual comparator |
| Output Type | Open-drain | Open-drain | Open-drain | Open-drain |
| Automotive Version | No automotive qualification stated for TS393MD | Automotive-grade version proposed for SO8 | Not stated | Not stated |
Principaux différenciateurs
- Broader stated operating-temperature range (vs NCV2393)
- Original manufacturer ecosystem and documented TS393 compatibility (vs TSX393)
- Common 8-SOIC footprint with independent open-drain channels (vs TS393DR2G)
Notes de conception
Do not substitute a push-pull-output comparator for the TS393MD without redesigning the output network. The TS393MD uses open-drain outputs, so every output state requires an external pull-up unless another pull-up device is already present in the circuit. Confirm pull-up voltage, resistor value, output leakage, sink current, and bus rise time before releasing the PCB.
Route both comparison inputs directly to their corresponding pins and keep them away from switching nodes, inductors, and high-current return paths. High input impedance reduces loading but does not prevent noise from being interpreted as a valid threshold transition. Use a stable reference, maintain short ground returns, and place input-referenced bypass or filter components close to the source when filtering is required.
Budget the comparator's 9 uA typical current per channel, two output pull-up currents, reference current, and leakage paths when designing a low-power system. A pull-up that is too strong can consume more power than the comparator itself, while an excessively weak pull-up can slow output transitions. Choose the resistor from the required logic voltage, permissible sink current, and target transition time.
Verify input offset, input common-mode range, supply range, and output limits across the full operating temperature for every replacement. The TS393MD is listed with a -55 C to +125 C range, while the NCV2393 is listed from -40 C to +125 C. A package-compatible part can therefore fail a low-temperature requirement even when its basic comparator function and footprint match.
Informations de conformité
No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals status was identified for the TS393MD. The standard TS393MD is distinct from the proposed automotive-grade TSX393 version.