TS393CN - Micropower Dual CMOS Comparator | STMicroelectronics
N.º da peça: TS393CN ✓ AtivoTS393CN Visão geral
A voltage comparator is a type of analog interface IC that compares two input voltages and produces a digital logic result indicating which input is higher. In this product hierarchy, the TS393CN is a dual-channel comparator, belonging to the broader comparator and analog interface IC families. Each channel can monitor a sensor, measurement node, or control threshold independently, allowing one package to perform two related comparison functions while consuming only 9 µA typically per channel.
The TS393CN offers high input impedance of 10^12 ohms typically, minimizing loading on the circuit being measured. Its 2.5 µs typical response time for 5 mV overdrive provides useful speed for threshold-control applications while retaining the low current consumption associated with CMOS design. Open-drain outputs also support wired-AND, wired-OR, and level-shifting arrangements when suitable pull-up resistors are added. The manufacturer identifies the device as pin-to-pin and functionally compatible with the bipolar LM393.
Because both channels are implemented in CMOS, the TS393CN avoids the comparatively high quiescent current of conventional bipolar LM393 implementations. The manufacturer describes its typical consumption as 20 times lower than the bipolar LM393 while retaining similar performance. This makes it particularly attractive in battery-operated equipment where the comparator can remain active continuously without imposing the same continuous bias-current burden as a bipolar counterpart.
Typical uses include battery threshold monitoring, window-comparison systems, temperature-limit detection, low-voltage signaling, and general-purpose sensing interfaces. The two independent channels can compare two sensed quantities against separate references or implement complementary threshold decisions. Its 8-pin DIP format also supports through-hole prototyping, educational equipment, repair work, and industrial control assemblies where socketed or leaded components are preferred.
Designers should account for the open-drain output architecture by placing a pull-up resistor on each output. Input common-mode range, supply-voltage limits, output sink current, and operating temperature boundaries must be checked against the manufacturer datasheet before final circuit release. The DIP package also requires adequate lead spacing and mechanical clearance from nearby conductors, especially in high-voltage or densely populated assemblies.
This page combines the core electrical characteristics of the TS393CN with package information, practical comparator design guidance, and a focused comparison with documented LM393-compatible devices. It is intended to help engineers identify where the micropower CMOS implementation offers a practical advantage without overlooking the open-drain pull-up requirements and application-specific limits of the original design.
Alternativas drop-in para TS393CN — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com TS393CN (mesmo formato e footprint) — diferindo em Mounting Type, Number of Channels, Output Type, Package.
LM393DT
✅ Drop-In✗ Fora de estoque
$0.0461 / unidade
Ver ficha técnica →TL393
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
UC393
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TS393CN Classificações máximas e características elétricas
| Comparator Type | Dual voltage comparator |
| Number of Channels | 2 channels |
| Logic Technology | CMOS |
| Tipo de saída | Open-drain |
| Typical Supply Current | 9 µA per comparator |
| Input Impedance | 10^12 ohms typical |
| Typical Response Time | 2.5 µs with 5 mV overdrive |
| Comparator Function | General-purpose voltage comparison |
| LM393 Compatibility | Pin-to-pin and functionally compatible |
| Encapsulamento | 8-pin DIP |
| Tipo de montagem | Through-hole |
Configuração de pinos do TS393CN
| Pino 1 | OUT1 — Open-drain output of comparator 1 |
| Pino 2 | IN1- — Inverting input of comparator 1 |
| Pino 3 | IN1+ — Non-inverting input of comparator 1 |
| Pino 4 | GND — Ground connection |
| Pino 5 | IN2+ — Non-inverting input of comparator 2 |
| Pino 6 | IN2- — Inverting input of comparator 2 |
| Pino 7 | OUT2 — Open-drain output of comparator 2 |
| Pino 8 | VCC — Positive supply connection |
Aplicações típicas
TS393CN é adequado para 6 aplicaçãos: Battery-Powered Threshold Monitoring, Window and Limit Detection, Industrial Sensor Interfacing, Temperature Limit Signaling, Low-Voltage System Supervision, Portable Equipment and Prototyping.
Battery-Powered Threshold Monitoring
The TS393CN fits continuous battery threshold monitoring because each comparator draws only 9 µA typically. Place one channel across a sensed voltage and a reference to detect undervoltage, overvoltage, or charge-state transitions. Its 10^12-ohm typical input impedance reduces loading on high-impedance dividers, while the 2.5 µs typical response at 5 mV overdrive supports prompt decisions. The open-drain outputs can drive a pull-up connected to a low-power system rail. Compared with a bipolar LM393, the documented consumption advantage is approximately 20 times, making the TS393CN particularly useful when the comparator remains enabled throughout standby operation.
Recomendado
Window and Limit Detection
The two independent TS393CN channels support window-limit and upper/lower-bound detection in one 8-pin DIP package. Each comparator can evaluate a sensed voltage against a separate reference, producing two open-drain logic outputs for an alarm or control system. The typical 9 µA per-channel consumption is valuable in portable instruments, and the 10^12-ohm typical input impedance helps preserve divider accuracy. Use suitable pull-up resistors on both outputs and account for the 2.5 µs response condition when defining detection margins. This arrangement provides two related decisions without requiring separate single-channel packages.
Recomendado
Industrial Sensor Interfacing
The TS393CN can interface a high-impedance sensor output to a digital control path by comparing the sensor voltage with a reference. Its 10^12-ohm typical input impedance minimizes sensor loading, and its open-drain output provides a straightforward way to drive an optocoupler, relay-control input, or logic pull-up network. The 9 µA typical current per comparator suits distributed, low-power industrial sensing when supply headroom is limited. Before deployment, confirm the input common-mode range, supply voltage, and output sink current against the manufacturer's electrical characteristics, particularly when the sensor uses a 0 V to 5 V signal range.
Recomendado
Temperature Limit Signaling
The TS393CN can compare a temperature-derived voltage with an upper or lower limit and provide an open-drain alarm signal. Two channels permit separate high- and low-temperature thresholds, while the 9 µA typical consumption per comparator limits the impact on low-power thermal monitoring equipment. The 10^12-ohm typical input impedance is useful when the sensing divider has a high source impedance, and the 2.5 µs typical response at 5 mV overdrive supports responsive protection signaling. Add pull-up resistors and select the reference and sensor network so their operating ranges remain inside the comparator's specified common-mode limits.
Recomendado
Low-Voltage System Supervision
The TS393CN is suitable for supervising a low-voltage rail and generating a control signal when the monitored level crosses a reference. Its 9 µA typical current per comparator reduces continual overhead in battery-operated equipment, while the dual-channel arrangement can monitor more than one rail or polarity condition. The open-drain output can be pulled up to an appropriate system logic voltage, enabling wired logic where useful. Verify that the monitored voltage remains within the comparator's input common-mode range and that the supply operates within the manufacturer's limits. The DIP package is also convenient for prototypes and through-hole repair assemblies.
Recomendado
Portable Equipment and Prototyping
The TS393CN works well in portable instruments, educational boards, and through-hole prototypes where a dual comparator and low standby current are needed without abandoning the 8-pin DIP footprint. The 9 µA typical consumption per comparator helps protect battery life, and the 10^12-ohm typical input impedance minimizes interference with high-impedance test points. Its open-drain outputs require pull-up resistors and should be checked for adequate rise time in the target logic network. The manufacturer describes the device as pin-to-pin and functionally compatible with the bipolar LM393, providing a useful reference when reviewing existing through-hole comparator designs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TS393CN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LM393 | TL393 | UC393 |
|---|---|---|---|---|
| Brand | STMicroelectronics | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin DIP | DIP-8 | DIP-8 | DIP-8 |
| Comparator Channels | 2 | 2 | 2 | 2 |
| Mounting Type | Through-hole | Through-hole | Through-hole | Through-hole |
Principais diferenciais
- Lower typical operating current than a bipolar LM393 (vs LM393)
- High-impedance CMOS sensing inputs (vs LM393)
- Dual open-drain channels in a standard 8-pin DIP (vs TL393)
Notas de projeto
Do not treat an open-drain output as a push-pull logic output. Each TS393CN output must have an external pull-up resistor to establish a valid high level. Size the resistor for the required output rise time and available sink current, and confirm that the downstream input does not impose excessive capacitance. If two outputs are combined for wired logic, verify that only one output can actively pull the shared node low at a time.
Use the 9 µA typical comparator current as the baseline for battery-life estimation, then add pull-up resistor current and the current consumed by the sensing network. A pull-up to a higher voltage can dominate the comparator's own consumption; for example, the resistor current is V divided by R. This calculation is an estimate based on the chosen resistor and supply voltage rather than a manufacturer datasheet figure.
The 8-pin DIP footprint requires standard 0.1-inch lead spacing and adequate clearance around the component body. Keep input traces short where possible, connect the ground pin to a low-impedance return path, and place pull-up resistors close to the open-drain outputs to minimize high-impedance trace length. For mixed analog and digital layouts, route the sensing node away from switching-current paths and provide a stable reference source.
Validate overdrive, common-mode range, and output timing for the actual operating condition. The 2.5 µs typical response time is specified at 5 mV overdrive and should not be treated as a universal propagation delay. Near the switching threshold, small differences in input voltage, temperature, and supply voltage can alter the transition time. Use hysteresis or a suitable positive-feedback network when chatter would be harmful.
Informações de conformidade
The manufacturer datasheet does not establish the requested compliance fields in the cited product summary. Confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status with the manufacturer before making a compliance claim.
