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Texas Instruments TLC354MN
- Part No.:
- TLC354MN
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
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TLC354MN.pdf
- Description:
- QUAD COMPARATOR
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Product details
Overview
TLC354MN from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for precision voltage comparison in single- or dual-supply systems. It features four independent comparators, 1.4 V to 18 V supply range, 5 pA typical input bias current, 10¹² Ω typical input impedance, and operates across –55°C to 125°C for military-grade reliability in harsh environments.
For engineers reviewing the TLC354MN datasheet, TLC354MN pinout, TLC354MN application, or TLC354MN equivalent, this page delivers verified electrical specs, military-temperature validated performance, open-drain output configuration, pin-compatible alternatives to LM339, and real-world use cases in battery-powered instrumentation and high-reliability analog monitoring circuits.
Technical Context
The TLC354MN implements four independent, rail-to-rail input-capable comparators using LinCMOS™ process technology-enabling ultra-low input bias current (5 pA typ) and high input impedance (>10¹² Ω). Each comparator has an n-channel open-drain output, requiring external pull-up for logic-level compatibility with TTL, MOS, and CMOS.
It supports single-supply operation down to 1.4 V and dual-supply configurations where |VDD − VDD−| ranges from 1.4 V to 18 V. Common-mode input range includes ground, and input offset voltage remains stable at ≤5 mV (max) over full temperature range (–55°C to 125°C), with drift <0.23 µV/month including first 30 days.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 18 V - enables direct integration into low-voltage battery systems (e.g., 1.5 V alkaline) and industrial 12–15 V rails without level-shifting. |
| Input Bias Current | 5 pA typ - preserves signal integrity when interfacing with high-impedance sensors (e.g., photodiodes, strain gauges) without loading. |
| Input Impedance | 10¹² Ω typ - ensures minimal current draw from source networks, critical for precision reference monitoring and leakage-sensitive designs. |
| Output Type | N-channel open-drain - allows wired-AND logic, flexible pull-up selection (TTL/CMOS/MOS compatible), and isolation between comparator outputs. |
| Temp Range | –55°C to 125°C - qualified for military/aerospace applications, engine control units, and extended-temperature industrial controllers. |
| Input Offset Voltage | ≤5 mV max at 25°C - guarantees reliable decision thresholds in low-differential-signal detection (e.g., overvoltage latch, zero-crossing detection). |
| Supply Current | 300 µA typ at 5 V - supports always-on monitoring in power-constrained systems without compromising response time (650 ns typ). |
Pinout & Package
Package: 14-pin plastic DIP (N package), through-hole mounting, 0.300-inch wide body, standard JEDEC MS-001AC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NMOS drain - requires external pull-up; sinks up to 6 mA at 5 V for direct TTL interface. |
| 2OUT | Comparator 2 output | Independent open-drain output - enables isolated logic decisions or shared bus via wired-AND with other channels. |
| VDD | Positive supply | Primary power rail for all four comparators; accepts 1.4–18 V; decoupling recommended near pin. |
| 2IN– | Comparator 2 inverting input | Differential input node - high-impedance (10¹² Ω) path for reference or feedback signals. |
| 2IN+ | Comparator 2 noninverting input | Differential input node - matches 2IN– in bias current and offset; used for signal sensing or threshold comparison. |
| 1IN– | Comparator 1 inverting input | Independent high-Z input - supports direct connection to passive dividers or sensor bridges without buffering. |
| 1IN+ | Comparator 1 noninverting input | Paired with 1IN–; identical electrical characteristics ensure matched channel behavior. |
| 3OUT | Comparator 3 output | Third open-drain output - fully independent; usable for multi-threshold detection or fault redundancy. |
| 4OUT | Comparator 4 output | Fourth open-drain output - enables quad-window detection, sequential logic, or status encoding. |
| VDD–/GND | Negative supply / ground | Return path for dual-supply operation or system ground in single-supply mode; common to all comparators. |
| 4IN+ | Comparator 4 noninverting input | Final high-Z input - completes full quad set; supports simultaneous monitoring of four independent analog conditions. |
| 4IN– | Comparator 4 inverting input | Final differential input - matched to others for consistent offset and bias performance across all channels. |
| 3IN+ | Comparator 3 noninverting input | Third noninverting input - maintains identical LinCMOS™ input stage characteristics as 1IN+/2IN+. |
| 3IN– | Comparator 3 inverting input | Third inverting input - ensures uniform common-mode range (0 V to VDD–1.5 V) across full temperature range. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Enables 5 pA input bias current and 10¹² Ω input impedance - eliminates need for guard rings or active bias compensation in high-Z sensor interfaces. |
| Single/dual-supply flexibility | Operates from 1.4 V to 18 V supply or dual rails with ≥1.4 V differential - simplifies design across portable, automotive, and industrial platforms. |
| ESD protection | 2000-V HBM rating per MIL-STD-833C Method 3015 - reduces field failure risk during handling and PCB assembly without external protection diodes. |
| Stable input offset drift | ≤0.23 µV/month (including first 30 days) - ensures long-term accuracy in calibration-critical systems like test equipment and avionics monitors. |
| Pin compatibility with LM339 | Direct drop-in replacement in existing LM339 layouts - retains same 14-pin DIP footprint and pin function mapping, enabling seamless upgrade to lower-power, higher-precision operation. |
Applications
| Battery-Powered Threshold Detection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Monitoring cell voltage in a 4-cell Li-ion pack to trigger under-voltage lockout before deep discharge. IC Role / Device Role / Timing Role: TLC354MN compares each cell's voltage against a precision reference; outputs drive discrete MOSFET gates or microcontroller GPIOs. Use Value: Ultra-low 130 µA supply current at 1.4 V extends battery life; 5 pA input bias prevents loading of high-resistance voltage dividers used for cell sensing. |
Use Scenario: Converting analog outputs from RTDs and thermocouples into digital status flags for PLC input modules. IC Role / Device Role / Timing Role: TLC354MN acts as a quad window comparator - each pair detects high/low limits, generating fault, normal, and alarm signals. Use Value: –55°C to 125°C operation ensures reliability in uncontrolled cabinet environments; open-drain outputs interface directly with 24 V PLC inputs via pull-up resistors. |
| Aerospace Power Sequencing | Medical Instrumentation Reference Monitoring |
|
Use Scenario: Validating correct power-up sequence of multiple DC/DC converters in satellite subsystems before enabling downstream loads. IC Role / Device Role / Timing Role: TLC354MN monitors individual rail voltages (e.g., 3.3 V, 5 V, 12 V) and asserts enable signals only when all are within tolerance. Use Value: Military-grade temperature qualification (–55°C to 125°C) and 5 mV max input offset guarantee deterministic sequencing across launch thermal cycles and orbital vacuum conditions. |
Use Scenario: Verifying stability of precision voltage references (e.g., REF5025) in portable ECG and EEG amplifiers before signal acquisition begins. IC Role / Device Role / Timing Role: TLC354MN compares reference output against trimmed thresholds to detect drift >10 ppm, halting measurement until recalibration. Use Value: Input offset voltage drift <0.23 µV/month ensures reference validity over weeks of clinical deployment; LinCMOS™ input stage avoids leakage-induced baseline shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339N | Higher input bias current (25 nA vs. 5 pA), wider input offset (7 mV max), no military temp grade - BJT-based architecture limits low-voltage operation below 2 V. | Acceptable for commercial-temp, non-battery applications where input impedance >1 MΩ suffices and supply >2 V is guaranteed. | Select LM339N only if cost sensitivity outweighs precision, low-voltage, or extended-temperature requirements - not suitable for <2 V or –40°C+ systems. |
| TLC3704CN | CMOS quad comparator with rail-to-rail inputs, 10 pA input bias, but rated only to 70°C (C grade); lacks military qualification and long-term offset stability data. | Valid for commercial instrumentation and consumer electronics where ambient temperature stays below 70°C and 10-year drift is not monitored. | Choose TLC3704CN for cost-optimized, room-temperature designs needing rail-to-rail input swing - avoid where military spec or >70°C operation is required. |
Compared with LM339N and TLC3704CN, the TLC354MN uniquely combines military-temperature operation, sub-picoamp input bias, and proven long-term offset stability - making it the sole option for high-reliability, low-power, extended-range analog monitoring where parametric consistency over time and environment is non-negotiable.
Availability
TLC354MN is available at Aetrix Electronics and suitable for aerospace power sequencing, medical reference monitoring, industrial sensor conditioning, and battery-powered threshold detection requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLC354MN 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 high-reliability components, with decades of heritage in precision analog ICs and military-qualified products.
The TLC354MN belongs to TI's LinCMOS™ comparator family, engineered specifically for applications demanding ultra-low input current, wide supply range, and robust operation across extreme temperatures - targeting defense, avionics, and industrial control markets.
FAQ
What is the maximum supply voltage for the TLC354MN?
The TLC354MN supports a maximum supply voltage of 18 V, as specified in its Absolute Maximum Ratings. This applies to both single-supply operation (VDD to VDD–/GND) and dual-supply configurations where the differential voltage between VDD and VDD– does not exceed 18 V. Exceeding this limit risks permanent device damage.
Does the TLC354MN support true rail-to-rail input operation?
The TLC354MN supports common-mode input voltage down to ground (0 V) and up to VDD–1.5 V over full temperature range, enabling operation near the negative rail. However, it does not achieve full rail-to-rail input swing - the upper limit is VDD–1.5 V, not VDD. This is sufficient for most single-supply threshold detection but differs from true rail-to-rail-input comparators.
Can the TLC354MN outputs be tied together for wired-AND logic?
Yes, the TLC354MN outputs are n-channel open-drain and explicitly designed for wired-AND configurations. Connecting multiple outputs to a shared pull-up resistor creates positive-logic AND behavior: the net output is low only if all comparators assert, and high otherwise - ideal for fault aggregation or multi-condition enable signals.
Is the TLC354MN pin-compatible with the LM339 series?
Yes, the TLC354MN is pin-compatible with the LM339, LM239, and LM2901 in the 14-pin DIP (N) package. Pin assignments for inputs, outputs, and supplies match exactly, allowing direct replacement in existing LM339 layouts without PCB modification - provided the design accommodates the TLC354MN's lower supply current and higher input impedance.
What is the typical response time of the TLC354MN at 5 V supply?
The TLC354MN exhibits a typical response time of 650 ns at VDD = 5 V with a 100-mV input step and 5-mV overdrive, as measured under standard test conditions (RL = 5.1 kΩ to 5 V, CL = 15 pF). This value holds across the full military temperature range (–55°C to 125°C), ensuring consistent timing behavior in demanding environments.
How does the TLC354MN handle electrostatic discharge (ESD)?
The TLC354MN incorporates internal ESD protection circuits and is rated to 2000 V per Human Body Model (MIL-STD-833C, Method 3015). While this exceeds standard commercial requirements, TI recommends standard ESD handling precautions during assembly - exposure to uncontrolled ESD events may degrade parametric performance even within rated limits.
TLC354MN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- :
- -
TLC354MN FAQ
1.How can I place an order for TLC354MN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC354MN 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 TLC354MN reliable?
The price and inventory of TLC354MN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC354MN is usually 5 days.
3.What payment methods are accepted for TLC354MN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC354MN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC354MN?
TLC354MN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC354MN 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 TLC354MN?
For technical support, including TLC354MN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC354MN requirements.
6.How does Aetrix verify that TLC354MN is sourced from the original manufacturer or authorized distributors?
All TLC354MN 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 TLC354MN meets industry standards.
7.What is the process for return or replacement of TLC354MN?
All TLC354MN units undergo pre-shipment inspection (PSI). If there is an issue with TLC354MN, 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 TLC354MN part is unused and in its original packaging.
Return procedure for TLC354MN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC354MN 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
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