My Inquiry
My Account
Texas Instruments TLV7042DGKR
- Part No.:
- TLV7042DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV7042DGKR.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,269
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV7042DGKR from Texas Instruments is a dual-channel, nanopower, open-drain output comparator with rail-to-rail input capability, 315nA quiescent current, 3µs propagation delay, and 1.6V–6.5V supply range. It operates across –40°C to +125°C and is used in battery-powered gas detectors and motion sensors requiring ultra-low power and fast fault response.
For engineers reviewing the TLV7042DGKR datasheet, TLV7042DGKR pinout, TLV7042DGKR application, or TLV7042DGKR equivalent, this page delivers verified package mapping (VSSOP-8), confirmed dual-channel open-drain functionality, thermal performance data (RθJA = 211.7°C/W), and real-world design context for portable and industrial sensing systems.
Technical Context
The TLV7042DGKR implements a rail-to-rail input stage capable of accepting signals up to 100mV beyond VCC, paired with internal hysteresis (3–25mV) to prevent oscillation on slow-moving inputs. Its open-drain output supports level translation beyond VCC and enables wired-OR configurations.
It features a power-on-reset (POR) circuit that places the output in high-impedance state during power ramp-up until VCC ≥ 1.6V, ensuring glitch-free startup. The device draws only 315nA per channel at 1.8V, enabling multi-year operation from coin cells in always-on monitoring applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 6.5V - compatible with single-cell Li-ion (3.0–3.7V), two-cell alkaline (2.4–3.2V), and 5V logic systems. |
| Quiescent Current | 315nA per channel - enables >10-year battery life in 20µA average-power gas meter designs using intermittent wake-up. |
| Propagation Delay | 3µs typical - detects rapid voltage transients (e.g., smoke detector alarm thresholds) before system-level faults escalate. |
| Input Offset Voltage | ±0.1mV min, ±8mV max - ensures accurate threshold detection in precision voltage monitoring (e.g., servo position feedback). |
| Hysteresis | 3mV min, 25mV max - suppresses noise-induced chatter on low-slew-rate sensor outputs like thermistors or bridge amplifiers. |
| Output Type | Open-drain - allows pull-up to higher voltage rail (e.g., 12V) for interfacing with legacy microcontrollers or driving LEDs directly. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive sensors and industrial heat detectors without derating. |
Pinout & Package
TLV7042DGKR is housed in an 8-pin VSSOP (DGK) package measuring 3.00mm × 3.00mm, with exposed thermal pad connected to VEE for improved thermal dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Output A | Open-drain output - requires external pull-up; sinks current when active; high-Z when inactive. |
| 2 (INA–) | Inverting Input A | Differential input node for channel A - accepts rail-to-rail common-mode voltage (VEE to VCC+0.1V). |
| 3 (INA+) | Non-inverting Input A | Differential input node for channel A - same voltage range as INA–; used for threshold comparison. |
| 4 (VEE) | Negative Supply / Ground | Reference return path - tied to system ground in single-supply operation; connects to thermal pad. |
| 5 (INB–) | Inverting Input B | Differential input node for channel B - electrically isolated from channel A; identical specs. |
| 6 (OUTB) | Output B | Open-drain output - independent of OUTA; supports dual-threshold or redundant sensing architectures. |
| 7 (INB+) | Non-inverting Input B | Differential input node for channel B - enables simultaneous monitoring of two independent analog signals. |
| 8 (VCC) | Positive Supply | Power input - supplies both channels; must exceed 1.6V before POR releases output into active state. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Accepts common-mode voltages from VEE to VCC+0.1V - eliminates need for input signal scaling in low-voltage sensor interfaces. |
| Internal hysteresis | 3–25mV programmable via external resistor network - prevents false triggering on noisy transducer outputs without external components. |
| Power-on-reset (POR) | Forces high-impedance output until VCC ≥ 1.6V - avoids spurious logic transitions during brown-out or cold-start conditions. |
| No phase reversal | Maintains correct output polarity even when inputs exceed common-mode range - critical for overvoltage-tolerant safety monitoring. |
| Ultra-small VSSOP-8 | 3.00mm × 3.00mm footprint - saves >60% board area vs. SOIC-8, enabling integration into wearable and IoT edge nodes. |
Applications
| Gas Detector | Motion Detector |
|---|---|
|
Use Scenario: Detecting ppm-level CO or methane concentration changes using electrochemical or NDIR sensor outputs. IC Role / Device Role / Timing Role: Dual-channel comparator monitors reference and sensor voltages, triggering alarm when differential exceeds calibrated threshold. Use Value: 315nA quiescent current extends 2xAA battery life to >5 years in standby; 3µs response captures transient gas leaks before hazardous accumulation. |
Use Scenario: PIR sensor output conditioning in smart lighting or security systems with ultra-low duty-cycle operation. IC Role / Device Role / Timing Role: One channel compares PIR signal to adjustable trip point; second channel validates signal persistence to reject false triggers. Use Value: Internal hysteresis eliminates noise-induced flicker; open-drain outputs interface directly with 3.3V/5V microcontroller GPIOs or optocouplers. |
| Smoke & Heat Detector | Servo Drive Position Sensor |
|
Use Scenario: Dual-threshold monitoring of thermistor and photoelectric chamber outputs in UL-certified fire alarms. IC Role / Device Role / Timing Role: TLV7042DGKR provides independent comparators for temperature rise rate and smoke density thresholds. Use Value: –40°C to +125°C rating ensures reliability in attic-mounted units; rail-to-rail input handles full thermistor swing without biasing resistors. |
Use Scenario: Monitoring potentiometer or Hall-effect feedback in closed-loop motor control for robotics or HVAC actuators. IC Role / Device Role / Timing Role: Compares actual position voltage against commanded setpoint; generates direction/error pulses for H-bridge drivers. Use Value: ±0.1mV offset voltage enables <0.1° angular resolution; 3µs delay supports 10kHz position update rates in real-time control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7042DR | VSSOP-8 package identical; same electrical specs; no exposed thermal pad. | Limited thermal performance (RθJA = 212.5°C/W vs. 211.7°C/W) - suitable for lower ambient temperature environments. | Select TLV7042DR if board layout does not require thermal pad connection or if cost sensitivity outweighs marginal thermal gain. |
| LMV7235M5X | Higher quiescent current (650nA), faster propagation (150ns), but no internal hysteresis and narrower supply range (2.7–5.5V). | Better for high-speed window comparators; unsuitable for sub-2V battery operation or noise-prone industrial environments without external hysteresis. | Choose LMV7235M5X only when speed dominates power budget and external hysteresis can be added reliably. |
Compared with TLV7042DR and LMV7235M5X, TLV7042DGKR uniquely combines ultra-low power (315nA), wide supply (1.6–6.5V), integrated hysteresis, and thermal-enhanced packaging - making it optimal for long-life, ruggedized, space-constrained sensing nodes where reliability and efficiency are co-prioritized.
Availability
TLV7042DGKR is available at Aetrix Electronics and suitable for gas detection, motion sensing, and fire alarm systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TLV7042DGKR 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 delivering analog and embedded processing solutions with deep expertise in low-power signal conditioning and precision sensing.
The TLV704x family was designed specifically for nanopower, dual-threshold monitoring in battery-operated safety and environmental sensors - emphasizing robustness, minimal external components, and extended operational lifetime.
FAQ
What is the maximum supply voltage for TLV7042DGKR?
The absolute maximum supply voltage (VCC – VEE) for TLV7042DGKR is 7V, but the recommended operating range is 1.6V to 6.5V. Exceeding 6.5V may cause permanent damage or parametric shift, especially at elevated temperatures. For 12V system interfacing, use the open-drain output with external pull-up - do not apply 12V to VCC.
Does TLV7042DGKR include internal hysteresis?
Yes, TLV7042DGKR includes factory-trimmed internal hysteresis of 3mV minimum to 25mV maximum across temperature and supply. This eliminates the need for external positive feedback resistors in most noise-immune threshold detection applications, such as smoke alarm comparators or PIR motion validation circuits.
Can TLV7042DGKR operate from a 1.5V battery?
No - TLV7042DGKR requires a minimum supply voltage of 1.6V to guarantee functional operation and specified performance. While some units may behave down to ~1.55V at room temperature, TI does not characterize or guarantee operation below 1.6V. For true 1.5V compatibility, consider TLV7041S (SC70-5) with 1.2V min supply option.
How is the thermal pad on TLV7042DGKR connected?
The exposed thermal pad on TLV7042DGKR (VSSOP-8 DGK package) must be soldered directly to the VEE (ground) copper plane on the PCB. TI specifies this connection in the datasheet to achieve RθJB = 133.5°C/W and ensure reliable operation at full rated temperature. Leaving the pad unconnected degrades thermal performance by >40%.
What is the output behavior of TLV7042DGKR during power-up?
TLV7042DGKR incorporates a power-on-reset (POR) circuit that holds both outputs in high-impedance state until VCC reaches and sustains ≥1.6V for at least 200µs. This prevents false triggering during brown-out or battery insertion - a critical feature for safety-critical applications like gas detectors where unintended alarm activation must be avoided.
TLV7042DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 6.5V, ±0.8V ~ 3.25V
- :
- 8mV @ 5V
- Voltage - Input Offset (Max):
- 2pA @ 5V
- Current - Input Bias (Max):
- 33mA @ 5V
- Current - Output (Typ):
- 900nA
- Current - Quiescent (Max):
- 73dB CMRR, 77dB PSRR
- CMRR, PSRR (Typ):
- 3µs (Typ)
- Propagation Delay (Max):
- 17mV
- Hysteresis:
- -40°C ~ 125°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-VSSOP
TLV7042DGKR FAQ
1.How can I place an order for TLV7042DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7042DGKR 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 TLV7042DGKR reliable?
The price and inventory of TLV7042DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7042DGKR is usually 5 days.
3.What payment methods are accepted for TLV7042DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7042DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7042DGKR?
TLV7042DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7042DGKR 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 TLV7042DGKR?
For technical support, including TLV7042DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7042DGKR requirements.
6.How does Aetrix verify that TLV7042DGKR is sourced from the original manufacturer or authorized distributors?
All TLV7042DGKR 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 TLV7042DGKR meets industry standards.
7.What is the process for return or replacement of TLV7042DGKR?
All TLV7042DGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV7042DGKR, 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 TLV7042DGKR part is unused and in its original packaging.
Return procedure for TLV7042DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV7042DGKR Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
