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Texas Instruments TLV3494AIPWT
- Part No.:
- TLV3494AIPWT
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLV3494AIPWT.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:111
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Product details
Overview
TLV3494AIPWT 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 use in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the TLV3494AIPWT datasheet, TLV3494AIPWT pinout, TLV3494AIPWT application, or TLV3494AIPWT equivalent, key selection criteria include its 14-pin TSSOP package, push-pull CMOS output stage (no external pull-up required), ±15 mV input offset voltage, 74 dB common-mode rejection, and guaranteed operation across –40°C to +125°C.
Technical Context
The TLV3494AIPWT implements a fully differential, rail-to-rail input stage with ESD-protected inputs and a robust push-pull CMOS output capable of sourcing/sinking 5 mA. Its internal architecture supports stable operation down to 1.8 V while maintaining sub-1.2 µA maximum per-channel supply current.
It requires no external biasing for rail-to-rail input operation and avoids shoot-through current in the output stage. The device is specified for continuous operation across –40°C to +125°C and exhibits ±12 µV/°C input offset drift, making it suitable for precision threshold detection in thermally variable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - supports direct connection to single Li-ion cell (3.0–3.7 V) or two alkaline cells (2.4–3.2 V). |
| Quiescent Current | 0.85 µA per channel - enables multi-year battery life in always-on sensor wake-up circuits. |
| Propagation Delay | 6 µs at 100-mV overdrive - sufficient for low-frequency event detection (e.g., door open/close, fluid level threshold). |
| Input Offset Voltage | ±15 mV max - defines minimum detectable differential signal without external trimming. |
| Input Common-Mode Range | (V–) – 0.2 V to (V+) + 0.2 V - allows direct sensing of signals below ground or above V+ in single-supply systems. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistors and reduces system power and board area. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive cabin-adjacent applications. |
Pinout & Package
TLV3494AIPWT is housed in a 14-pin TSSOP package (5.00 mm × 4.40 mm body, 0.65 mm pitch), optimized for high-density PCB layouts in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | CMOS push-pull output for channel A - drives logic-high or logic-low directly to downstream MCU GPIO or latch. |
| 2 | –In A | Inverting input for channel A - accepts analog signals down to 0.2 V below V– (e.g., negative transients in sensor conditioning). |
| 3 | +In A | Noninverting input for channel A - supports reference-based threshold detection with rail-to-rail common-mode range. |
| 4 | V+ | Positive supply terminal - must be decoupled with 0.01 µF ceramic + 10 µF electrolytic capacitors per layout guidelines. |
| 5 | +In B | Noninverting input for channel B - electrically isolated from other channels; enables independent dual-threshold monitoring. |
| 6 | –In B | Inverting input for channel B - shares same ESD protection and input bias current (<10 pA) as channel A. |
| 7 | Out B | CMOS push-pull output for channel B - compatible with 1.8-V or 3.3-V logic families without level-shifting. |
| 8 | Out C | CMOS push-pull output for channel C - provides third independent decision output for multi-zone sensing. |
| 9 | –In C | Inverting input for channel C - supports simultaneous monitoring of three distinct analog thresholds. |
| 10 | +In C | Noninverting input for channel C - referenced to same V+ and V– as all other channels; no inter-channel crosstalk. |
| 11 | V– | Negative supply terminal - serves as system ground reference; must connect to low-impedance ground plane. |
| 12 | +In D | Noninverting input for channel D - completes quad-channel capability for full-system status monitoring (e.g., battery, temp, motion, light). |
| 13 | –In D | Inverting input for channel D - matches input capacitance (4 pF differential) and bias current of other channels. |
| 14 | Out D | CMOS push-pull output for channel D - final independent output; sinks or sources up to 5 mA into load. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range beyond supply rails | Operates with inputs 200 mV below V– or above V+, enabling direct interface with unbuffered sensors and transducers. |
| Push-pull CMOS output stage | Eliminates external pull-up resistors, reducing BOM count, power loss, and PCB footprint in multi-comparator systems. |
| 0.85 µA typical supply current per channel | Supports >10-year battery life in coin-cell-powered IoT endpoints when paired with duty-cycled wake-up architecture. |
| 6 µs propagation delay at 100-mV overdrive | Provides deterministic response for slow-varying signals (e.g., temperature ramps, pressure buildup) without excessive latency. |
| ±3000-V HBM ESD rating | Withstands handling and board-level ESD events without protection diodes or clamping circuits in most end-equipment. |
Applications
| Portable Medical Sensors | Wireless Security Systems |
|---|---|
|
Use Scenario: Detecting electrode contact integrity in wearable ECG patches using differential voltage thresholds across skin-electrode interfaces. IC Role / Device Role / Timing Role: Quad comparator monitors four independent lead-off conditions simultaneously, triggering alert on any channel deviation exceeding ±15 mV. Use Value: Enables reliable, low-power lead-off detection without external op-amps or ADCs - reducing system cost and size by 30% versus discrete solutions. |
Use Scenario: Monitoring tamper switches, door/window contacts, and PIR sensor outputs in battery-powered security hubs. IC Role / Device Role / Timing Role: TLV3494AIPWT acts as a low-quiescent-current threshold detector for four independent intrusion zones, driving MCU GPIOs directly. Use Value: Achieves <1 µA total system standby current per zone, extending AA-battery life to >5 years in always-armed mode. |
| Handheld Test Instruments | Ultra-Low-Power Industrial Monitoring |
|
Use Scenario: Implementing auto-ranging and signal presence detection in handheld multimeters and LCR meters. IC Role / Device Role / Timing Role: TLV3494AIPWT compares input signal amplitude against multiple reference levels to select optimal measurement range and enable autoranging logic. Use Value: Reduces microcontroller interrupt load and eliminates need for high-speed ADC sampling during idle periods. |
Use Scenario: Monitoring battery voltage, temperature, humidity, and fault flags in remote environmental sensor nodes. IC Role / Device Role / Timing Role: Four independent comparators supervise critical thresholds (e.g., low-battery cutoff, overtemperature shutdown, moisture alarm, communication watchdog). Use Value: Provides hardware-level fail-safe supervision independent of firmware - ensuring safe shutdown even during MCU lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3494IPW | Same electrical specs; packaged in 14-pin SOIC (8.65 mm × 3.91 mm) instead of TSSOP - 73% larger footprint, 2.3× higher RθJA (83.8 vs 120.8 °C/W). | Better thermal performance in low-airflow environments; less suitable for ultra-thin portable enclosures due to height and size. | Select TLV3494IPW only when board space permits and thermal derating margins require lower junction temperature rise. |
| TLV7044RTER | Higher supply current (1.3 µA/channel), slower propagation (12 µs), but includes built-in 100-mV hysteresis and 1.2-V internal reference - no external components needed. | Reduces BOM count for basic threshold detection but lacks rail-to-rail input range beyond supplies and has narrower VCC range (1.6–6.0 V). | Choose TLV7044RTER when hysteresis and reference integration outweigh need for sub-1-µA operation and extended input range. |
Compared with TLV3494IPW and TLV7044RTER, the TLV3494AIPWT uniquely balances ultra-low quiescent current, rail-to-rail input flexibility, and compact TSSOP packaging - making it the optimal choice for space- and power-constrained quad-threshold detection where external hysteresis can be added.
Availability
TLV3494AIPWT is available at Aetrix Electronics and suitable for portable medical equipment, wireless security systems, and handheld instruments requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TLV3494AIPWT 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 company specializing in analog and embedded processing technologies, with leadership in low-power signal chain and power management ICs.
The TLV349x product line was designed specifically for nanopower, rail-to-rail input/output comparators targeting battery-operated and energy-harvesting applications - emphasizing minimal supply current without sacrificing speed or input range.
FAQ
What is the maximum operating temperature for TLV3494AIPWT?
The TLV3494AIPWT is rated for continuous operation from –40°C to +125°C ambient temperature. This specification is validated per JEDEC JESD22-A108 and applies to the full 1.8-V to 5.5-V supply range. Thermal resistance (RθJA) for the TSSOP package is 120.8°C/W, so junction temperature must remain ≤150°C under actual power dissipation and board layout conditions.
Does TLV3494AIPWT require external pull-up resistors on its outputs?
No, TLV3494AIPWT does not require external pull-up resistors because it features a push-pull CMOS output stage. Each output (Out A–D) actively drives high or low, delivering VOH ≤ 200 mV below V+ and VOL ≤ 200 mV above V– at 5 mA load - compatible with standard 1.8-V and 3.3-V logic families without additional components.
Can TLV3494AIPWT operate from a single 1.8-V supply?
Yes, TLV3494AIPWT is fully specified to operate from a single 1.8-V supply, including all electrical characteristics (propagation delay, offset voltage, input common-mode range). At 1.8 V, typical quiescent current remains 0.85 µA per channel, and input common-mode range extends from –0.2 V to +2.0 V - enabling direct interface with sub-1-V sensor outputs when V– is grounded.
What is the input bias current specification for TLV3494AIPWT?
The TLV3494AIPWT has a maximum input bias current of ±10 pA at TA = 25°C, with typical value of ±1 pA. This ultra-low bias enables high-impedance sensor interfacing (e.g., pH electrodes, photodiodes) without significant voltage error - especially critical when using MΩ-range feedback or source impedances above 100 kΩ.
Is TLV3494AIPWT pin-compatible with other TLV349x variants?
No, TLV3494AIPWT is not pin-compatible with TLV3491 or TLV3492 due to differing channel counts and pin assignments. The TLV3494AIPWT uses a dedicated 14-pin TSSOP layout with four independent input pairs and outputs, whereas TLV3491 (5-pin SOT-23) and TLV3492 (8-pin SOT-23/SOIC) have fewer channels and incompatible pinouts - PCB redesign is required for substitution.
TLV3494AIPWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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-TSSOP
TLV3494AIPWT FAQ
1.How can I place an order for TLV3494AIPWT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV3494AIPWT 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 TLV3494AIPWT reliable?
The price and inventory of TLV3494AIPWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV3494AIPWT is usually 5 days.
3.What payment methods are accepted for TLV3494AIPWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV3494AIPWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV3494AIPWT?
TLV3494AIPWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV3494AIPWT 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 TLV3494AIPWT?
For technical support, including TLV3494AIPWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV3494AIPWT requirements.
6.How does Aetrix verify that TLV3494AIPWT is sourced from the original manufacturer or authorized distributors?
All TLV3494AIPWT 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 TLV3494AIPWT meets industry standards.
7.What is the process for return or replacement of TLV3494AIPWT?
All TLV3494AIPWT units undergo pre-shipment inspection (PSI). If there is an issue with TLV3494AIPWT, 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 TLV3494AIPWT part is unused and in its original packaging.
Return procedure for TLV3494AIPWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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