TS372CD - Dual Precision CMOS Comparator | STMicroelectronics
Référence : TS372CD ✗ Fin de vieTS372CD Présentation
A voltage comparator is an analog signal-processing IC that compares an input voltage against a reference voltage and changes its output state when the differential input crosses the switching threshold. A dual comparator integrates two independent channels into one package. Within the broader semiconductor hierarchy, TS372CD belongs to the comparator and amplifier IC family, where it bridges low-power analog sensing and digital logic control.
The TS372CD emphasizes low power and precision. The manufacturer specifies a very low supply current of 0.1 mA per comparator, independent of supply voltage. Its extremely low input bias current is typically 1 pA, and its input offset current is also typically 1 pA. These characteristics reduce disturbance from high-impedance sensors and make the device suitable for monitoring systems where the source impedance could otherwise create input-related errors.
Its differential CMOS architecture supports single-supply or dual-supply operation. The wide single-supply range extends from 1.5 V to 8 V, while the dual-supply capability covers positive and negative sensing ranges. The open-drain outputs require an external pull-up resistor when the output must rise to a positive logic voltage. This configuration provides flexible bus-level interfacing and permits wired-AND behavior when multiple outputs share a pull-up node.
Typical uses include battery-powered threshold detection, sensor signal conditioning, window monitoring, overvoltage and undervoltage detection, and low-speed control loops. The 600 ns response time is appropriate for power-management, industrial-control, and instrumentation systems that require a rapid decision without the higher energy consumption of a high-speed comparator.
Design the pull-up network around the required logic level, output rise time, and total capacitance. Place the pull-up resistor close to the output net, keep comparator input traces away from switching nodes, and account for input bias current when driving very high source impedances. Verify startup behavior and logic thresholds across temperature when the comparator controls a safety-critical or precision system.
This product page combines the TS372CD electrical characteristics, package details, verified drop-in replacement information, comparison parameters, and practical interface guidance. It helps engineers evaluate whether its low-power precision architecture fits a design before checking the manufacturer datasheet and confirming application-specific limits.
Alternatives de remplacement direct pour TS372CD — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
TLC372CD
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TS372CD Valeurs maximales et caractéristiques électriques
| Comparator Type | Precision differential voltage comparator |
| Number of Comparators | 2 independent comparators |
| Response Time | 600 ns |
| Single-Supply Voltage Range | 1.5 V to 8 V |
| Dual-Supply Voltage Range | +/-1.5 V to +/-8 V |
| Courant d'alimentation | 0.1 mA per comparator, independent of supply voltage |
| Input Bias Current | 1 pA typical |
| Input Offset Current | 1 pA typical |
| Type de sortie | Open-drain CMOS, MOS, TTL-compatible |
| Boîtier | 8-pin SOIC |
| Type de montage | Surface mount |
Guide de configuration des broches du TS372CD 8-pin soic
Configuration des broches du TS372CD (boîtier 8-pin 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 TS372CD.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
TS372CD convient pour 6 applications: Battery-Powered Threshold Detection, High-Impedance Sensor Monitoring, Power-Supply Rail Supervision, Industrial Process Limit Detection, Window Comparison and Over/Under Detection, Low-Voltage Digital Interfacing.
Battery-Powered Threshold Detection
The TS372CD fits battery-powered sensing because its supply current is 0.1 mA per comparator and its single-supply operating range extends down to 1.5 V. Each differential channel can compare a sensor voltage with a reference and control a digital warning or mode-change signal through an open-drain pull-up. This arrangement suits compact monitors that must conserve energy while providing a 600 ns response. Confirm the common-mode range, reference stability, and pull-up leakage before deployment.
Recommandé
High-Impedance Sensor Monitoring
The TS372CD is useful when a sensor presents very high source impedance because its typical input bias current is only 1 pA. A low-bias input reduces the voltage error introduced by source resistance, allowing the comparator to detect small crossings near the reference level. Place the sensing input away from switching nodes, verify the full common-mode range, and account for leakage through board contamination and connectors. Its dual-channel configuration can monitor two independent sensor thresholds.
Recommandé
Power-Supply Rail Supervision
The TS372CD can monitor a supply rail against a reference and assert an open-drain fault signal when the rail leaves its permitted window. Two independent comparators are useful for detecting undervoltage and overvoltage conditions separately. The 600 ns response time supports rapid protection signaling, while the 1.5 V to 8 V single-supply range permits operation from low-voltage rails. The external pull-up sets the logic level, and hysteresis should be added when avoiding repeated transitions around the threshold.
Recommandé
Industrial Process Limit Detection
The low-power precision characteristics of the TS372CD support process-control modules that compare a scaled sensor voltage with adjustable reference limits. Each open-drain output can drive a machine input, fault line, or discrete logic stage through a pull-up resistor. Its 600 ns response is suitable for many non-timing-critical industrial measurements, and the 0.1 mA-per-comparator supply current helps limit standby demand. Confirm input levels, noise immunity, and environmental operating limits before installation.
Recommandé
Window Comparison and Over/Under Detection
Two independent TS372CD channels can implement a window-comparison function when one channel detects the upper threshold and another detects the lower threshold. Their common supply current, open-drain outputs, and 600 ns response make the architecture suitable for compact control and alarm electronics. Combine the open-drain outputs with appropriate pull-up and logic arrangements, and add positive feedback for hysteresis. Validate threshold accuracy and temperature behavior with the final reference network and source impedance.
Recommandé
Low-Voltage Digital Interfacing
The TS372CD bridges a low-voltage analog signal to CMOS, MOS, or TTL-compatible logic through its open-drain outputs. Pulling the output to the destination logic rail prevents level translation from exceeding the receiving device's limits, while the low 0.1 mA per-comparator supply current suits compact control systems. Select the pull-up resistance from the required sink current and rise time, and observe the absolute maximum supply and input ratings. The 600 ns delay should be checked against the receiving logic's setup requirements.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TS372CD — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TLC372CD |
|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC - same |
| Brand | STMicroelectronics | Texas Instruments |
| Comparator Count | 2 independent comparators | 2 differential comparators |
| Comparator Type | Precision differential CMOS voltage comparator | Precision differential comparator |
| Single-Supply Voltage Range | 1.5 V to 8 V | 3 V to 16 V |
| Output Type | Open-drain CMOS, MOS, TTL-compatible | Open-drain CMOS or TTL-compatible |
Principaux différenciateurs
- Lower single-supply operating floor (vs TLC372CD)
- Documented very low input currents (vs TLC372CD)
- Original manufacturer platform (vs TLC372CD)
Notes de conception
Route the non-inverting and inverting inputs as a matched, short pair, and keep them away from the open-drain output and pull-up node. The 1 pA typical input bias current reduces sensitivity to leakage, but contamination, connector moisture, and long exposed traces can still create meaningful errors in high-impedance circuits. Use a protective ground guard where the circuit layout allows it, and avoid placing high-impedance inputs beside switching or supply nodes.
Do not treat an open-drain output as actively driven high. Every output that must rise to a logic level requires an external pull-up resistor to the appropriate supply rail. Size the resistor using the required output rise time, bus capacitance, and available sink current. If several TS372CD outputs share a pull-up, verify that no device attempts to pull the node high and that the combined pull-up current remains within every connected device's limits.
The quoted 0.1 mA applies to each comparator channel and excludes the current drawn through external pull-up resistors. Estimate the total system current from the actual output state, pull-up resistance, logic rail voltage, and any attached input. Also include reference-divider current. This matters in battery designs where a small resistor error or a frequently asserted output can dominate the comparator's low intrinsic consumption.
Add positive feedback to create hysteresis when the input signal can cross the threshold slowly or noise can cause output chatter. Size the feedback network so it changes the effective threshold by the required margin without introducing excessive current or shifting the nominal reference point. Evaluate the complete comparator, pull-up, reference, and input network across temperature; the 600 ns response time describes speed but does not guarantee clean switching near the threshold.
Informations de conformité
The catalog information does not provide explicit RoHS, REACH, halogen-free, lead-free, conflict-minerals, or automotive qualification statements for TS372CD. The device is obsolete.