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Texas Instruments TLC354CD
- Part No.:
- TLC354CD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC354CD.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
TLC354CD from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for single- or dual-supply operation across 1.4 V to 18 V. It delivers ultralow input bias current (5 pA typ), high input impedance (10¹² Ω typ), and rail-to-rail common-mode input range including ground - enabling direct interface with high-impedance sensors in battery-powered systems.
For engineers reviewing the TLC354CD datasheet, TLC354CD pinout, TLC354CD application, or TLC354CD equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for low-voltage comparator selection in precision analog monitoring and threshold detection circuits.
Technical Context
The TLC354CD integrates four independent comparators on a single SOIC-14 die using LinCMOS™ process technology, supporting both single-supply (1.4–18 V) and dual-supply (ΔV = 1.4–18 V) configurations. Its n-channel open-drain outputs enable wired-AND logic and TTL/MOS/CMOS compatibility.
It features built-in ESD protection (2000 V per MIL-STD-833C), ultrastable input offset voltage drift (0.23 µV/month), and guaranteed operation from 0°C to 70°C. Input offset voltage is specified at ≤5 mV max at 25°C and ≤10 mV over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 18 V - enables operation from single-cell Li-ion (≥1.4 V) up to industrial 15-V rails without level-shifting. |
| Input Bias Current | 5 pA typical - preserves signal integrity when interfacing with high-impedance sources like photodiodes or pH electrodes. |
| Input Offset Voltage | ≤5 mV at 25°C - ensures reliable threshold detection within ±5 mV accuracy under nominal conditions. |
| Common-Mode Input Range | Includes ground (0 V) to VDD−1.5 V - supports direct sensing of signals referenced to system ground. |
| Response Time | 650 ns typical (100-mV step, 5-mV overdrive) - suitable for medium-speed window comparators and overvoltage latch circuits. |
| Supply Current | 300 µA typical at 5 V - allows integration into always-on battery-monitoring subsystems with sub-µA quiescent budgets. |
| ESD Rating | 2000 V HBM - meets basic handling robustness requirements for assembly in non-classified environments. |
Pinout & Package
Package: SOIC-14 (D package), 8.75 mm × 4.0 mm × 1.75 mm max height, tape-and-reel compatible (TLC354CDR variant available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT, 2OUT, 3OUT, 4OUT | Comparator output (n-channel open-drain) | Require external pull-up to define logic-high level; support wired-AND configuration and mixed-voltage interfacing. |
| 1IN+, 1IN−, 2IN+, 2IN−, 3IN+, 3IN−, 4IN+, 4IN− | Differential input pairs (four channels) | High-impedance inputs accept signals down to ground; no internal hysteresis - external feedback required for noise immunity. |
| VDD | Positive supply rail | Accepts 1.4–18 V; powers all four comparators and internal bias circuitry. |
| VDD–/GND | Negative supply / ground reference | Serves as return path; common to all channels; supports true single-supply operation with ground-referenced inputs. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Enables picoampere-level input bias current and femtofarad-level input capacitance for minimal loading of sensitive nodes. |
| Single-supply capability from 1.4 V | Permits direct use with primary alkaline, NiMH, or LiFePO₄ cells without boost regulation - critical for portable instrumentation. |
| Pin-compatible with LM339 | Allows drop-in replacement in legacy designs while delivering lower power, higher input impedance, and improved offset stability. |
| Ultrastable input offset drift | 0.23 µV/month (including first 30 days) - reduces calibration frequency in long-life industrial monitoring equipment. |
| Built-in ESD protection | 2000-V HBM rating eliminates need for external TVS diodes in board-level ESD protection schemes. |
Applications
| Battery Voltage Monitor | Industrial Threshold Detector |
|---|---|
|
Use Scenario: Monitoring cell voltage in multi-cell Li-ion packs to trigger charge termination or low-voltage disconnect. IC Role / Device Role / Timing Role: Four independent comparators detect under-voltage, over-voltage, and balance thresholds simultaneously. Use Value: 5 pA input bias avoids loading of high-resistance voltage-divider networks, preserving measurement accuracy across temperature. |
Use Scenario: Detecting out-of-tolerance pressure, temperature, or flow signals in PLC I/O modules. IC Role / Device Role / Timing Role: Comparator array implements programmable alarm windows and fault latching logic. Use Value: Rail-to-rail common-mode input range accepts 0–10 V or 4–20 mA loop-derived signals without level-shifting circuitry. |
| Low-Power Sensor Interface | Power Supply Sequencing Controller |
|
Use Scenario: Interfacing with high-impedance gas or humidity sensors in wireless environmental nodes. IC Role / Device Role / Timing Role: Precision threshold comparison before wake-up event generation for ultra-low-power microcontrollers. Use Value: 300 µA supply current at 5 V enables continuous monitoring during sleep mode without compromising battery life. |
Use Scenario: Enforcing strict power-up/down sequencing in FPGA or ASIC-based systems with multiple supply domains. IC Role / Device Role / Timing Role: Monitors individual rail voltages and asserts reset or enable signals only when all supplies are stable. Use Value: Open-drain outputs allow OR-ing of multiple comparator outputs to drive a shared power-good line with single pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher input bias current (25 nA), wider offset spread (±7 mV), no 1.4-V minimum supply. | Less suitable for ultra-low-power or high-impedance sensor interfaces; better for cost-sensitive industrial controls. | Select LM339DR only if legacy footprint reuse is mandatory and sub-µA bias current is not required. |
| TLC3704CD | CMOS quad comparator with rail-to-rail inputs, 10-pA bias current, but requires ≥3-V supply and lacks ESD rating documentation. | Not rated for 1.4-V operation; unsuitable for single-cell battery systems; offers tighter offset (2 mV max) at higher voltage. | Choose TLC3704CD only when operating above 3 V and tighter initial offset is prioritized over ESD robustness and ultra-low-VDD support. |
Compared with LM339DR and TLC3704CD, the TLC354CD uniquely combines 1.4-V operation, 5-pA input bias, and 2000-V HBM ESD protection - making it the only option among the three qualified for long-life, single-cell, high-impedance analog monitoring.
Availability
TLC354CD is available at Aetrix Electronics and suitable for battery management systems, industrial sensor interfaces, power supply sequencers, and portable instrumentation requiring stable component supply with consistent parametric performance across production lots.
Supply support for TLC354CD 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 IC design and manufacturing.
The TLC354CD belongs to TI's LinCMOS™ comparator family, engineered specifically for low-voltage, low-power, high-input-impedance applications where traditional bipolar comparators fail - such as battery-operated test equipment and medical sensors.
FAQ
What is the minimum operating supply voltage for the TLC354CD?
The TLC354CD operates down to 1.4 V, enabling direct use with single alkaline, NiMH, or lithium-thionyl chloride cells. This specification is guaranteed across the 0°C to 70°C temperature range and is validated per TI's SLCS116B datasheet. Below 1.4 V, comparator functionality is not assured - the TLC354CD must be powered within its absolute minimum supply rating to maintain output state reliability and input offset stability.
Does the TLC354CD have internal hysteresis?
No, the TLC354CD does not include internal hysteresis. Its transfer function is purely comparator-based with no built-in Schmitt-trigger behavior. Engineers must add external positive feedback (e.g., resistor network from output to noninverting input) to introduce controlled hysteresis for noise immunity in noisy environments. This design flexibility allows custom hysteresis thresholds tailored to each application's signal-to-noise ratio - a feature confirmed in the "description" section of the SLCS116B datasheet.
Is the TLC354CD pin-compatible with the LM339?
Yes, the TLC354CD is explicitly pin-compatible with the LM339 in SOIC-14 (D) and PDIP-14 (N) packages, as stated in the "Key Features" section of the SLCS116B datasheet. Both devices share identical pin numbering, terminal functions, and footprint dimensions - allowing direct PCB replacement without layout changes. However, the TLC354CD improves upon the LM339 with lower input bias current, wider supply range, and enhanced ESD protection.
What is the maximum output sink current for the TLC354CD?
The TLC354CD guarantees a minimum low-level output current (IOL) of 1 mA at VDD = 5 V and VOL = 300 mV, with typical performance reaching 1.6 mA under those conditions. At VDD = 1.4 V, IOL drops to 1 mA minimum. This output drive capability supports direct connection to standard TTL loads or pull-up resistors as low as 4.7 kΩ while maintaining valid logic-low levels - verified in the "electrical characteristics" tables of the SLCS116B datasheet.
Can the TLC354CD operate from dual supplies?
Yes, the TLC354CD supports dual-supply operation provided the difference between VDD and VDD–/GND is maintained between 1.4 V and 18 V. The device does not require symmetrical rails - for example, +5 V and –3 V (ΔV = 8 V) is valid. Input common-mode range remains referenced to VDD–/GND, and outputs swing relative to that same reference. This dual-supply flexibility is documented in the "description" and "recommended operating conditions" sections of the SLCS116B datasheet.
TLC354CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 1.4V ~ 16V, ±0.7V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 800µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
TLC354CD FAQ
1.How can I place an order for TLC354CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC354CD 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 TLC354CD reliable?
The price and inventory of TLC354CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC354CD is usually 5 days.
3.What payment methods are accepted for TLC354CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC354CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC354CD?
TLC354CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC354CD 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 TLC354CD?
For technical support, including TLC354CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC354CD requirements.
6.How does Aetrix verify that TLC354CD is sourced from the original manufacturer or authorized distributors?
All TLC354CD 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 TLC354CD meets industry standards.
7.What is the process for return or replacement of TLC354CD?
All TLC354CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC354CD, 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 TLC354CD part is unused and in its original packaging.
Return procedure for TLC354CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC354CD Tags
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LM2903DR
Texas Instruments
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LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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NCX2200GMAZ
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