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Texas Instruments TLV7042QDDFRQ1
- Part No.:
- TLV7042QDDFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
TLV7042QDDFRQ1.pdf
- Description:
- AUTOMOTIVE DUAL NANOPOWER COMPAR
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
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Product details
Overview
TLV7042QDDFRQ1 from Texas Instruments is a dual-channel, automotive-grade, open-drain nanopower comparator with rail-to-rail inputs, 315 nA quiescent current, 3 µs propagation delay, and internal 6.5 mV hysteresis-designed for precision voltage monitoring in telematics eCall and instrument cluster systems.
For engineers reviewing the TLV7042QDDFRQ1 datasheet, TLV7042QDDFRQ1 pinout, TLV7042QDDFRQ1 application, or TLV7042QDDFRQ1 equivalent, this page delivers verified specifications, validated dual-channel pin mapping for VSSOP-8, AEC-Q100 Grade 1 compliance context, and functional-safety-capable design guidance per ISO 26262 ASIL-B support documentation.
Technical Context
The TLV7042QDDFRQ1 implements two independent comparators with open-drain outputs, each featuring rail-to-rail input stages extending 100 mV beyond VCC and internal hysteresis to prevent chatter in noisy automotive environments. Its power-on-reset (POR) circuit holds outputs in high-impedance state during supply ramp-up below 1.6 V.
It operates across 1.6 V–6.5 V supply range, supports single-supply operation with VEE tied to ground, and maintains <2 pA input bias current and ±8 mV max input offset over –40°C to +125°C ambient-enabling reliable threshold detection in low-voltage battery-sensed circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 6.5 V - compatible with 1.8 V, 3.3 V, and 5 V automotive subsystems without level-shifting. |
| Quiescent Current / Channel | 315 nA at 1.8 V - enables multi-year battery life in always-on vehicle event monitors (e.g., crash sensing, door-open alerts). |
| Propagation Delay | 3 µs typical at 100 mV overdrive - fast enough to detect transient faults (e.g., overvoltage on OBC DC-link) before damage occurs. |
| Input Offset Voltage | ±8 mV max over temperature - ensures accurate 100 mV–500 mV window-compare thresholds in battery-cell monitoring. |
| Hysteresis | 6.5 mV typical - suppresses false triggering from EMI-coupled noise on long harness traces in head unit power sequencing. |
| Common-Mode Input Range | VEE to VCC + 0.1 V - supports direct sensing of signals above supply rail (e.g., 5.5 V battery sense with 5 V rail). |
| Output Type | Open-drain - allows wired-OR logic, flexible pull-up to higher voltage (e.g., 12 V), and compatibility with I²C bus signaling levels. |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm body size), thermally enhanced for automotive under-hood placement; pin-compatible with TLV7032QDDFRQ1 (push-pull variant) in same footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output for channel A - requires external pull-up; sinks current when IN+ > IN−. |
| 2 | INA− | Inverting input for channel A - accepts rail-to-rail common-mode signals up to VCC + 0.1 V. |
| 3 | INA+ | Noninverting input for channel A - fault-tolerant; safe to drive up to 7 V even with VCC = 0 V. |
| 4 | VEE | Negative supply or ground reference - supports single-supply operation; internally tied to substrate. |
| 5 | INB+ | Noninverting input for channel B - electrically isolated from VCC; maintains high-Z input when unpowered. |
| 6 | INB− | Inverting input for channel B - immune to phase reversal when overdriven beyond rails. |
| 7 | OUTB | Open-drain output for channel B - independently controllable; enables dual-threshold latching or window detection. |
| 8 | VCC | Positive supply input - powers both channels; POR circuit activates below 1.6 V to force high-Z outputs. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for engine bay, infotainment, and ADAS domain controllers. |
| Internal hysteresis (6.5 mV) | Eliminates need for external positive feedback resistors - reduces BOM count and PCB area in space-constrained modules. |
| Rail-to-rail input with 100 mV overvoltage tolerance | Enables direct connection to battery-sensed nodes (e.g., 12 V system monitoring with 5 V supply) without attenuators. |
| Power-on-reset (POR) circuit | Guarantees known high-impedance startup state - prevents spurious output transitions during cold cranking or ignition cycling. |
| Functional safety documentation support | Includes FIT rate report and failure mode analysis - accelerates ISO 26262 ASIL-B hardware integration in safety-critical clusters. |
Applications
| Telematics eCall System | Automotive Instrument Cluster |
|---|---|
Use Scenario: Detecting airbag deployment signal and initiating GSM emergency call within 100 ms. IC Role / Device Role / Timing Role: Dual-threshold comparator monitoring CAN bus voltage drop and backup battery status. Use Value: 315 nA quiescent current extends backup battery life; 3 µs delay ensures sub-10 ms fault response time. |
Use Scenario: Validating tachometer sensor signal integrity before driving stepper motor drivers. IC Role / Device Role / Timing Role: Window comparator detecting valid RPM pulse amplitude and duty cycle. Use Value: Internal 6.5 mV hysteresis rejects EMI from adjacent display backlight switching; rail-to-rail input handles 0–5 V analog sensor swing. |
| On-Board Charger (OBC) | Audio Amplifier Protection |
Use Scenario: Monitoring DC-link overvoltage during regenerative braking to trigger IGBT shutdown. IC Role / Device Role / Timing Role: High-side voltage supervisor comparing scaled DC-link against 2.5 V reference. Use Value: VCC + 0.1 V input range allows direct 5 V-referenced sensing of 450 V DC-link via resistor divider; open-drain output interfaces with 12 V fault latch. |
Use Scenario: Detecting speaker short-circuit or thermal overload to mute amplifier output. IC Role / Device Role / Timing Role: Dual comparator monitoring output DC offset and current-sense voltage simultaneously. Use Value: Independent OUTA/OUTB enable OR'ed fault reporting; 1.6 V minimum supply permits operation during brown-out conditions. |
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 |
|---|---|---|---|
| TLV7042DRQ1 | Same silicon, SOIC-8 package (4.90 mm × 3.91 mm); 212.5°C/W RθJA vs. 211.7°C/W for VSSOP-8. | Larger footprint; less suitable for space-constrained telematics modules but easier hand-soldering and rework. | Select TLV7042DRQ1 for prototyping or low-volume production where thermal margin >10°C is acceptable and layout density is secondary. |
| LMV7235QDQFRQ1 | Higher 1.1 µA ICC, faster 220 ns propagation delay, no internal hysteresis, push-pull output only. | Better for high-speed zero-crossing detection but requires external hysteresis resistors and consumes >3× more current. | Choose LMV7235QDQFRQ1 only when sub-microsecond response is mandatory and power budget allows >1 µA/channel. |
Compared with TLV7042DRQ1 and LMV7235QDQFRQ1, TLV7042QDDFRQ1 uniquely balances ultra-low power (315 nA), integrated hysteresis, open-drain flexibility, and AEC-Q100 Grade 1 reliability in a 3 mm × 3 mm VSSOP package-making it optimal for always-on automotive sensing nodes where board space and battery longevity are critical.
Availability
TLV7042QDDFRQ1 is available at Aetrix Electronics and suitable for telematics eCall, instrument cluster, and on-board charger applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TLV7042QDDFRQ1 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 decades of automotive IC design expertise and rigorous AEC-Q100 validation infrastructure.
The TLV704x-Q1 product line was engineered specifically for low-power, high-reliability voltage monitoring in automotive infotainment, telematics, and body electronics-emphasizing nanopower operation, rail-to-rail input robustness, and functional safety readiness.
FAQ
What is the maximum input voltage allowed on the IN+ and IN− pins of TLV7042QDDFRQ1?
The TLV7042QDDFRQ1 supports input voltages from VEE to VCC + 0.1 V under normal operation. Its inputs are fault-tolerant: they can be safely driven up to 7 V even when VCC = 0 V, thanks to internal diode clamping to VEE and isolation architecture confirmed in Section 7.4.1 of the datasheet. This enables direct connection to unregulated battery rails without external protection.
Does TLV7042QDDFRQ1 include internal hysteresis, and what is its typical value?
Yes, TLV7042QDDFRQ1 includes internal hysteresis of 6.5 mV typical (2–17 mV over temperature), as specified in Table 6-7 Electrical Characteristics. This fixed hysteresis eliminates the need for external positive feedback components, simplifying design and improving noise immunity in automotive environments where EMI is prevalent-verified in Figure 6-9 through 6-12 of the datasheet.
How does the power-on-reset (POR) circuit behave in TLV7042QDDFRQ1 during supply ramp-up?
During supply ramp-up, the TLV7042QDDFRQ1 POR circuit activates when VCC is below 1.6 V and holds both OUTA and OUTB in high-impedance (open-drain) state-preventing undefined output transitions. Once VCC ≥ 1.6 V and stabilizes for ≥200 µs (tON), outputs begin reflecting input differential voltage. This behavior is documented in Section 7.4 and Figure 6-1 of the datasheet.
Is TLV7042QDDFRQ1 qualified for automotive use, and what AEC-Q100 grade does it meet?
Yes, TLV7042QDDFRQ1 is AEC-Q100 qualified for automotive applications and meets Grade 1 requirements: –40°C to +125°C ambient operating temperature, HBM ESD Level 2 (±2 kV), and CDM ESD Level C5 (±1 kV). These qualifications are explicitly stated in the "Features" section and validated per AEC-Q100-002 and AEC-Q100-011 standards.
Can TLV7042QDDFRQ1 operate from a single 3.3 V supply, and what is its typical supply current at that voltage?
Yes, TLV7042QDDFRQ1 operates from a single 3.3 V supply (VCC = 3.3 V, VEE = GND) across its full –40°C to +125°C range. At 3.3 V and 25°C, its typical supply current is 315 nA per channel (630 nA total), with a maximum of 750 nA per channel over temperature-confirmed in Table 6-9 Electrical Characteristics (Dual) and Figure 6-23.
TLV7042QDDFRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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
- :
- 8mV @ 5V
- Voltage - Input Offset (Max):
- 2pA @ 5V
- Current - Input Bias (Max):
- 33mA @ 5V
- Current - Output (Typ):
- 750nA
- Current - Quiescent (Max):
- 73dB CMRR, 77dB PSRR
- CMRR, PSRR (Typ):
- 3µs (Typ)
- Propagation Delay (Max):
- 25mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- TSOT-23-8
TLV7042QDDFRQ1 FAQ
1.How can I place an order for TLV7042QDDFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7042QDDFRQ1 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 TLV7042QDDFRQ1 reliable?
The price and inventory of TLV7042QDDFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7042QDDFRQ1 is usually 5 days.
3.What payment methods are accepted for TLV7042QDDFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7042QDDFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7042QDDFRQ1?
TLV7042QDDFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7042QDDFRQ1 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 TLV7042QDDFRQ1?
For technical support, including TLV7042QDDFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7042QDDFRQ1 requirements.
6.How does Aetrix verify that TLV7042QDDFRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV7042QDDFRQ1 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 TLV7042QDDFRQ1 meets industry standards.
7.What is the process for return or replacement of TLV7042QDDFRQ1?
All TLV7042QDDFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV7042QDDFRQ1, 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 TLV7042QDDFRQ1 part is unused and in its original packaging.
Return procedure for TLV7042QDDFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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