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Texas Instruments TLV3494AID
- Part No.:
- TLV3494AID
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV3494AID.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,963
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Product details
Overview
TLV3494AID from Texas Instruments is a quad nanopower push-pull output comparator optimized for ultra-low-power, single-supply systems. It operates from 1.8 V to 5.5 V, draws only 0.85 µA typical quiescent current per channel, features rail-to-rail input range extending 200 mV beyond supply rails, and delivers 6 µs propagation delay at 100-mV overdrive - enabling precise threshold detection in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the TLV3494AID datasheet, TLV3494AID pinout, TLV3494AID application, or TLV3494AID equivalent, this page provides verified functional identity, SOIC-14 package mapping, confirmed quad-channel push-pull architecture, real-world timing and power specs, and two validated alternative comparators with documented functional trade-offs.
Technical Context
The TLV3494AID implements four independent high-precision comparators sharing a common 1.8–5.5-V supply, each with rail-to-rail input stage and CMOS push-pull output - eliminating external pull-up resistors and shoot-through current. Its input bias current is ±1 pA typical, offset voltage is ±3 mV (±15 mV max), and common-mode rejection ratio exceeds 60 dB across full temperature range.
Designed for low-noise, low-drift operation, it supports external hysteresis via positive feedback and tolerates input overvoltage up to ±500 mV beyond rails when current-limited to 10 mA. The device functions continuously from –40°C to +125°C without mode switching or configuration registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - enables direct operation from single Li-ion or two alkaline cells without regulation |
| Quiescent Current | 0.85 µA per channel - allows >10-year battery life in always-on sensor wake-up circuits |
| Propagation Delay | 6 µs at 100-mV overdrive - supports fast edge detection in low-power microcontroller interrupt triggers |
| Input Offset Voltage | ±3 mV typical - ensures <10-mV threshold uncertainty in precision voltage monitoring applications |
| Input Common-Mode Range | (V−) − 0.2 V to (V+) + 0.2 V - permits direct sensing of signals below ground or above supply in single-supply systems |
| Output Type | Push-pull CMOS - drives logic inputs directly without pull-up resistors, reducing BOM count and leakage paths |
| ESD Rating | ±3000 V HBM - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
TLV3494AID is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27-mm pitch. Thermal resistance RθJA is 83.8°C/W, supporting operation up to +125°C ambient in properly laid-out PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | CMOS push-pull output for channel A - sinks or sources up to 5 mA, compatible with 1.8-V/3.3-V logic |
| 2 | –In A | Inverting input for channel A - accepts signals down to (V−) − 0.2 V, enabling sub-rail sensing |
| 3 | +In A | Noninverting input for channel A - supports reference or signal routing with rail-to-rail common-mode range |
| 4 | V+ | Positive supply pin - connects to main system rail (1.8–5.5 V); decoupling capacitor required at pin |
| 5 | +In B | Noninverting input for channel B - electrically isolated from other channels; no internal connection to A/C/D |
| 6 | –In B | Inverting input for channel B - identical electrical characteristics to pin 2, fully independent channel |
| 7 | Out B | CMOS push-pull output for channel B - independent drive capability; no shared output structure with A/C/D |
| 8 | Out C | CMOS push-pull output for channel C - same timing and drive strength as pins 1 and 7 |
| 9 | –In C | Inverting input for channel C - matches pin 2 performance; supports multi-threshold monitoring |
| 10 | +In C | Noninverting input for channel C - enables simultaneous comparison against three distinct reference levels |
| 11 | V− | Negative supply pin - typically connected to GND in single-supply configurations; must be lowest potential node |
| 12 | +In D | Noninverting input for channel D - completes quad-channel set; supports independent signal conditioning path |
| 13 | –In D | Inverting input for channel D - identical specification to pins 2, 6, and 9; no cross-channel coupling |
| 14 | Out D | CMOS push-pull output for channel D - final independent output; supports four-way event detection or state encoding |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range beyond supply rails | Enables direct sensing of signals at 0 V or above V+ without level-shifting circuitry |
| 0.85 µA per-channel quiescent current | Reduces total system standby power by >90% versus standard comparators in multi-channel monitoring |
| Push-pull CMOS output stage | Eliminates need for external pull-up resistors, saving board space and preventing I²R losses in battery paths |
| 6 µs propagation delay at 100-mV overdrive | Supports reliable zero-crossing detection and fast wake-up triggering in energy-harvesting nodes |
| ±3000-V HBM ESD rating | Permits direct integration into handheld enclosures without added transient protection components |
Applications
| Portable Medical Sensors | Wireless Security Systems |
|---|---|
|
Use Scenario: Continuous glucose monitor detecting low-battery alert thresholds and sensor fault conditions using dual-reference window comparators. IC Role / Device Role / Timing Role: TLV3494AID provides four independent voltage windows - two for battery voltage monitoring (VBAT < 2.2 V / > 3.6 V), two for sensor bias integrity checks. Use Value: 0.85 µA per channel extends disposable sensor lifetime beyond 14 days on a CR2032 coin cell while maintaining <10-µs response to critical faults. |
Use Scenario: PIR motion detector with adaptive sensitivity that triggers only when differential signal exceeds calibrated noise floor across multiple zones. IC Role / Device Role / Timing Role: TLV3494AID compares four analog PIR outputs against dynamically adjusted references to reject false alarms from thermal drift or EMI. Use Value: Rail-to-rail input range accommodates unbuffered PIR outputs spanning –0.1 V to 3.4 V, eliminating op-amp buffers and associated power overhead. |
| Handheld Test Instruments | Ultra-Low-Power IoT Nodes |
|
Use Scenario: Battery-powered multimeter implementing auto-ranging via voltage divider selection controlled by comparator-driven analog switches. IC Role / Device Role / Timing Role: TLV3494AID monitors input voltage magnitude across four thresholds to select optimal attenuation and ADC input range. Use Value: Push-pull outputs directly drive MOSFET gates of analog switches without level shifters, reducing component count and leakage-induced measurement error. |
Use Scenario: Soil moisture sensor node waking an MCU only when moisture crosses upper/lower thresholds, then transmitting status via BLE. IC Role / Device Role / Timing Role: TLV3494AID acts as dual-window comparator - one pair for moisture level, one for battery health - all operating in nanoamp sleep mode. Use Value: 0.85 µA per channel ensures total comparator current remains below 4 µA, allowing >5-year operation on two AA cells with 1-minute wake intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3494IPW | TSSOP-14 package (5.00 mm × 4.40 mm); RθJA = 120.8°C/W vs 83.8°C/W for SOIC | Better suited for high-density layouts where footprint area is constrained but thermal margin is acceptable | Select TLV3494IPW when PCB real estate is limited and ambient temperature stays below 85°C |
| TLV3694IDR | Lower 320-nA IQ per channel; 15-µs propagation delay; same SOIC-14 package | Optimized for extreme battery life (>20 years) where speed is secondary to power reduction | Choose TLV3694IDR when system wake events occur infrequently (<1/minute) and propagation delay >10 µs is acceptable |
Compared with TLV3494AID, TLV3494IPW offers smaller footprint but higher thermal resistance, while TLV3694IDR reduces current draw by 62% at the cost of 2.5× slower response - making TLV3494AID the balanced choice for applications requiring both sub-µA power and <10-µs timing fidelity.
Availability
TLV3494AID is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, handheld instruments, and ultra-low-power IoT nodes requiring stable component supply across extended production lifecycles.
Supply support for TLV3494AID includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 50 years of innovation in precision signal chain and low-power design.
The TLV349x product line was engineered specifically for nanopower, rail-to-rail sensing in battery-constrained applications - delivering sub-1-µA operation without sacrificing speed or input range in single-supply architectures.
FAQ
What is the maximum operating temperature for TLV3494AID?
The TLV3494AID is rated for continuous operation from –40°C to +125°C ambient temperature. Its SOIC-14 package has a junction-to-ambient thermal resistance of 83.8°C/W, so at 125°C ambient and 3.3-V supply, total power dissipation must remain below 150 mW to keep junction temperature under 150°C - well within safe limits for four-channel operation.
Does TLV3494AID require external pull-up resistors on its outputs?
No, TLV3494AID does not require external pull-up resistors because it features a true push-pull CMOS output stage capable of actively driving high and low logic states. Each output can source or sink up to 5 mA, making it directly compatible with 1.8-V and 3.3-V digital inputs without additional components.
Can TLV3494AID operate from a 1.8-V supply while maintaining full specifications?
Yes, TLV3494AID is fully specified from 1.8 V to 5.5 V. At 1.8 V, it maintains 6 µs propagation delay (at 100-mV overdrive), ±3 mV typical offset voltage, rail-to-rail input range, and 0.85 µA typical quiescent current per channel - enabling reliable operation in single-cell lithium or two-cell alkaline systems.
How is hysteresis implemented with TLV3494AID?
Hysteresis is implemented externally on TLV3494AID by adding positive feedback from the output to the noninverting input through a resistor divider. For example, connecting a 560-kΩ resistor from OUT to +IN and a 39-kΩ resistor from +IN to ground sets ~380-mV hysteresis - preventing chatter on noisy inputs while preserving the device's native 6-µs response time.
What decoupling capacitors are recommended for TLV3494AID?
Texas Instruments recommends placing a 0.01-µF ceramic capacitor in parallel with a 10-µF electrolytic (or tantalum) capacitor between V+ and V− pins, located as close as possible to the TLV3494AID SOIC-14 package. This dual-capacitor approach suppresses both high-frequency switching noise and low-frequency supply droop during output transitions.
TLV3494AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 15mV @ 5.5V
- Voltage - Input Offset (Max):
- 10pA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.2µA
- Current - Quiescent (Max):
- 74dB CMRR, 69.12dB PSRR
- CMRR, PSRR (Typ):
- 13.5µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
TLV3494AID FAQ
1.How can I place an order for TLV3494AID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV3494AID on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLV3494AID reliable?
The price and inventory of TLV3494AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV3494AID is usually 5 days.
3.What payment methods are accepted for TLV3494AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV3494AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV3494AID?
TLV3494AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV3494AID order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLV3494AID?
For technical support, including TLV3494AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV3494AID requirements.
6.How does Aetrix verify that TLV3494AID is sourced from the original manufacturer or authorized distributors?
All TLV3494AID products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLV3494AID meets industry standards.
7.What is the process for return or replacement of TLV3494AID?
All TLV3494AID units undergo pre-shipment inspection (PSI). If there is an issue with TLV3494AID, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLV3494AID part is unused and in its original packaging.
Return procedure for TLV3494AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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