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Texas Instruments TLV7256IDDUR
- Part No.:
- TLV7256IDDUR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
TLV7256IDDUR.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,354
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Product details
Overview
TLV7256IDDUR from Texas Instruments is a CMOS dual comparator with rail-to-rail common-mode input voltage range (0 V to VCC), push-pull output stage, and ultra-low supply current of 20 µA typical at 5 V. It operates from 1.8 V to 5 V single supply and delivers 680 ns propagation delay (tPLH) at 5 V, enabling use in battery-powered voltage monitoring and threshold detection circuits.
For engineers reviewing the TLV7256IDDUR datasheet, TLV7256IDDUR pinout, TLV7256IDDUR application, or TLV7256IDDUR equivalent, key selection criteria include its 2 pA input offset current, 88 dB open-loop voltage gain, 48–65 dB CMRR across temperature, push-pull drive capability (±35 mA), and VSSOP-8 package compatibility with space-constrained portable electronics designs.
Technical Context
The TLV7256IDDUR integrates two independent high-precision comparators on a single die, each featuring CMOS input stages with 4 pA typical input bias current and rail-to-rail input voltage range down to VCC–. Its push-pull output eliminates need for external pull-up resistors and directly interfaces with TTL/CMOS logic.
Designed for low-voltage operation, it maintains functional performance across 1.8 V–5 V supply range, with supply current scaling from 20 µA (5 V) to 34 µA (1.8 V) and output drive strength degrading predictably-e.g., Isource drops from 30 mA (5 V) to 5 mA (1.8 V)-enabling consistent design margining across battery discharge profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V single supply - supports Li-ion, coin-cell, and regulated 3.3 V systems without level-shifting. |
| Supply Current (TYP) | 20 µA at 5 V - enables >1-year battery life in always-on voltage-monitoring nodes with 10 µA sleep current budget. |
| Input Offset Voltage (MAX) | ±9 mV over –40°C to 85°C - ensures reliable 10 mV-level threshold detection across industrial temperature range. |
| Propagation Delay (tPLH) | 680 ns at 5 V, 100 mV overdrive - suitable for sub-1 MHz window-comparator timing in power sequencing and fault response. |
| Output Drive (Isource/Isink) | 30 mA / 33 mA at 5 V - drives LED indicators, small MOSFET gates, or logic inputs without external buffers. |
| Common-Mode Input Range | 0 V to VCC - accepts ground-referenced sensor signals and rail-sensing inputs without attenuation or bias networks. |
| CMRR (MIN) | 40 dB at 1.8 V, 48 dB at 5 V - rejects supply ripple and noise in noisy embedded environments with minimal filtering. |
Pinout & Package
VSSOP-8 (DDU) package: 2.3 mm × 2.0 mm body, 0.5 mm pitch, exposed pad not present, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC+ | Positive supply input - must be decoupled with ≥0.1 µF ceramic capacitor near pin for stable high-speed switching. |
| 2 | 1OUT | Comparator 1 push-pull output - sinks or sources current; no external pull-up required for logic-level interfacing. |
| 3 | 1IN− | Inverting input of Comparator 1 - high-impedance node; sensitive to PCB leakage and EMI without guard ring. |
| 4 | 1IN+ | Non-inverting input of Comparator 1 - used for reference or signal input in standard threshold-detection configurations. |
| 5 | 2IN+ | Non-inverting input of Comparator 2 - enables dual-threshold or window-comparator top/bottom reference routing. |
| 6 | 2IN− | Inverting input of Comparator 2 - paired with Pin 5 for independent second channel sensing. |
| 7 | 2OUT | Comparator 2 push-pull output - electrically isolated from Pin 2; allows independent logic-level signaling paths. |
| 8 | VCC− | Ground reference - must connect to system GND plane with low-inductance path to minimize ground bounce during output transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Accepts signals from 0 V to VCC, eliminating input biasing resistors in single-supply sensor interface circuits. |
| Push-pull output stage | Drives high/low states actively - removes dependency on external pull-ups and reduces BOM count in portable designs. |
| 20 µA typical supply current | Enables multi-year operation from CR2032 coin cells in battery-pack voltage monitors and low-power wake-up detectors. |
| 2 pA input offset current | Minimizes voltage error in high-impedance reference divider networks, preserving accuracy in precision threshold applications. |
| 680 ns propagation delay | Supports real-time response to fast transients in power-supply UV/OV protection and motor stall detection circuits. |
Applications
| Battery Voltage Monitoring | Portable Audio Power Sequencing |
|---|---|
|
Use Scenario: Detecting under-voltage and over-voltage conditions in 2-cell Li-ion battery packs for handheld devices. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors lower threshold (e.g., 6.0 V), the other upper (e.g., 8.4 V). Use Value: Enables precise, low-power battery protection without external op-amps or reference ICs - full window detection consumes only 40 µA total. |
Use Scenario: Controlling power-up order of analog audio codec, DAC, and amplifier in MP3 players and digital cameras. IC Role / Device Role / Timing Role: Comparator 1 triggers enable signal when main 3.3 V rail reaches regulation; Comparator 2 validates 1.8 V core rail before releasing reset. Use Value: Ensures safe power sequencing with <1 µs timing skew between channels - prevents latch-up or brownout in mixed-voltage SoC subsystems. |
| Cellular Phone Keypad Backlight Control | Test Equipment Threshold Detection |
|
Use Scenario: Activating LED backlight only when ambient light falls below user-set threshold in smartphone keypads. IC Role / Device Role / Timing Role: Single comparator (Channel 1) compares photodiode amplifier output against adjustable reference; Channel 2 unused or tied off. Use Value: Achieves <10 µA quiescent current in dark-state standby - extends standby time without sacrificing responsiveness to light changes. |
Use Scenario: Providing pass/fail indication in handheld multimeters and portable oscilloscope trigger modules. IC Role / Device Role / Timing Role: High-speed comparator detecting signal crossing preset thresholds with minimal propagation delay variation (<100 ns over temperature). Use Value: Delivers consistent 680 ns tPLH and 250 ns tPHL at 5 V - enables accurate edge-triggered measurements without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7235M5X | Open-drain output, 45 µA supply current, 1.8 V min supply - requires external pull-up and draws >2× more current. | Limited to wired-OR logic or level translation; unsuitable for direct TTL/CMOS drive without added components. | Select when open-drain flexibility is needed and board area permits pull-up resistor; avoid if minimizing component count is critical. |
| TLV3702IDR | Push-pull output, 1.8 µA supply current, but only 100 kHz GBW - slower response (µs-scale delays) and lower drive (10 mA). | Better for ultra-low-power wake-up sensors, worse for real-time fault detection requiring sub-microsecond response. | Select for battery-life-critical applications where speed <100 kHz suffices; avoid for power sequencing or transient detection. |
Compared with LMV7235M5X and TLV3702IDR, the TLV7256IDDUR uniquely balances ultra-low supply current (20 µA), push-pull drive (30 mA), and nanosecond-scale propagation delay - making it optimal for space- and power-constrained portable electronics requiring both efficiency and responsiveness.
Availability
TLV7256IDDUR is available at Aetrix Electronics and suitable for battery-pack voltage monitoring, portable audio power sequencing, and cellular phone keypad backlight control requiring stable component supply across long production lifecycles.
Supply support for TLV7256IDDUR 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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs and low-power design.
The TLV7256 belongs to TI's low-voltage, low-power comparator product line - engineered specifically for portable, battery-operated systems where supply current, size, and single-supply operation are primary constraints.
FAQ
What is the operating supply voltage range for the TLV7256IDDUR?
The TLV7256IDDUR operates from 1.8 V to 5 V on a single supply, with guaranteed functionality across the full –40°C to 85°C temperature range. At 1.8 V, it maintains 20 µA typical supply current and 6 mV input offset voltage max, enabling reliable operation in deeply discharged battery scenarios. The TLV7256IDDUR does not support dual-supply or negative-voltage operation.
Does the TLV7256IDDUR require external pull-up resistors on its outputs?
No - the TLV7256IDDUR features true push-pull output stages on both channels, capable of actively driving high (up to 4.93 V at 5 V supply) and low (down to 0.12 V at 5 V with 5 mA sink) logic levels. This eliminates the need for external pull-up resistors, reducing component count and PCB area. The TLV7256IDDUR output can directly interface with TTL, CMOS, and microcontroller GPIO pins.
What is the maximum input common-mode voltage range of the TLV7256IDDUR?
The TLV7256IDDUR supports rail-to-rail common-mode input voltage from 0 V to VCC, verified across all supply voltages (1.8 V, 2.7 V, and 5 V). At 1.8 V supply, the usable range extends to VCC – 0.3 V per datasheet specification, ensuring compatibility with ground-referenced sensors and supply-rail monitoring without input attenuation networks. This behavior is intrinsic to the TLV7256IDDUR's CMOS input architecture.
How does the TLV7256IDDUR perform at low supply voltages like 1.8 V?
At 1.8 V, the TLV7256IDDUR delivers 20 µA typical supply current, ±9 mV max input offset voltage, and 6 mA source/sink drive capability - sufficient for driving LEDs or logic inputs in ultra-low-power modes. Propagation delay increases to 550 ns (tPLH) but remains deterministic. The TLV7256IDDUR maintains full functionality without parameter derating outside datasheet limits, making it suitable for energy-harvesting and coin-cell applications.
Is the TLV7256IDDUR pin-compatible with other TI dual comparators in VSSOP-8?
No - the TLV7256IDDUR has a unique pinout optimized for dual independent comparators (VCC+, 1OUT, 1IN−, 1IN+, 2IN+, 2IN−, 2OUT, VCC−), differing from TI's TLV3702 (VCC, OUT1, IN1−, IN1+, IN2+, IN2−, OUT2, GND) and LMV7235 (VCC, OUT, IN−, IN+, GND, NC, NC, NC). Direct replacement requires PCB layout revision. Always verify pin mapping using the TLV7256IDDUR datasheet before substitution.
TLV7256IDDUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 4pA @ 5V
- Current - Input Bias (Max):
- 35mA @ 5V
- Current - Output (Typ):
- 70µA
- Current - Quiescent (Max):
- 65dB CMRR
- CMRR, PSRR (Typ):
- 680ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-VSSOP
TLV7256IDDUR FAQ
1.How can I place an order for TLV7256IDDUR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV7256IDDUR 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 TLV7256IDDUR reliable?
The price and inventory of TLV7256IDDUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV7256IDDUR is usually 5 days.
3.What payment methods are accepted for TLV7256IDDUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV7256IDDUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV7256IDDUR?
TLV7256IDDUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV7256IDDUR 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 TLV7256IDDUR?
For technical support, including TLV7256IDDUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV7256IDDUR requirements.
6.How does Aetrix verify that TLV7256IDDUR is sourced from the original manufacturer or authorized distributors?
All TLV7256IDDUR 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 TLV7256IDDUR meets industry standards.
7.What is the process for return or replacement of TLV7256IDDUR?
All TLV7256IDDUR units undergo pre-shipment inspection (PSI). If there is an issue with TLV7256IDDUR, 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 TLV7256IDDUR part is unused and in its original packaging.
Return procedure for TLV7256IDDUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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