Overview
The TLV3491AIDBVT, part of the TLV349x family, is a nanopower, push-pull output comparator designed by Texas Instruments. This device is renowned for its very low supply current, high speed, and rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 1.8 V to 5.5 V, making it ideal for low-voltage and battery-powered applications. The TLV3491AIDBVT is available in a 5-pin SOT-23 package, which is suitable for space-constrained and portable applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 1.8 | 5.5 | V | |
| Quiescent Current (IQ) | 0.85 | 0.8 | 1.2 | µA |
| Input Common-Mode Range | (V–) – 0.2 V | (V+) + 0.2 V | V | |
| Propagation Delay Time (tPLH) | 6 | 12 | µs | |
| Input Offset Voltage (VOS) | ±3 | ±15 | mV | |
| Output Voltage High (VOH) | 90 | 200 | mV | |
| Output Voltage Low (VOL) | 160 | 200 | mV | |
| Package Type | 5-Pin SOT-23 |
Key Features
- Very low supply current: 0.8 µA (typical)
- High speed: 6 µs propagation delay time
- Rail-to-rail input and output on supply voltages as low as 1.8 V
- Push-pull CMOS output stage with no shoot-through current
- Input common-mode range beyond supply rails
- Micro-sized packages: 5-pin SOT-23 and 8-pin SOIC
- Input overvoltage protection with ESD diodes
- Operating temperature range: –40°C to 125°C
Applications
- Portable medical equipment
- Wireless security systems
- Remote control systems
- Handheld instruments
- Ultra-low power systems
- Battery-powered applications with single-cell operation
Q & A
- What is the typical quiescent current of the TLV3491AIDBVT?
The typical quiescent current is 0.8 µA.
- What is the operating voltage range of the TLV3491AIDBVT?
The device operates on a single supply voltage from 1.8 V to 5.5 V.
- What is the propagation delay time of the TLV3491AIDBVT?
The propagation delay time is typically 6 µs.
- Does the TLV3491AIDBVT have input overvoltage protection?
- What is the input common-mode range of the TLV3491AIDBVT?
The input common-mode range is beyond the supply rails, from (V–) – 0.2 V to (V+) + 0.2 V.
- What are the typical applications of the TLV3491AIDBVT?
Typical applications include portable medical equipment, wireless security systems, remote control systems, and handheld instruments.
- What package types are available for the TLV3491AIDBVT?
The device is available in a 5-pin SOT-23 package.
- How does the TLV3491AIDBVT handle noisy input signals?
The device can be configured with external hysteresis to improve noise immunity for noisy input signals.
- What are the layout guidelines for using the TLV3491AIDBVT?
Proper grounding, short lead lengths, and decoupling capacitors are recommended to maintain the specified performance.
- What is the operating temperature range of the TLV3491AIDBVT?
The device operates over a temperature range of –40°C to 125°C.
