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Texas Instruments TLC372IDR
- Part No.:
- TLC372IDR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372IDR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,774
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Product details
Overview
TLC372IDR from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for low-power, high-impedance sensing in single- or dual-supply systems. It delivers 200ns typical response time at 5V, 150µA supply current per channel, 5pA input bias current, and operates across −40°C to 85°C. It is used in precision threshold detection circuits such as power supply monitoring and battery voltage supervision.
For engineers reviewing the TLC372IDR datasheet, TLC372IDR pinout, TLC372IDR application, or TLC372IDR equivalent, key selection considerations include its rail-to-rail common-mode input range (including ground), ultra-low input bias current, open-drain output compatibility with TTL/MOS/CMOS logic levels, and pin compatibility with LM393 in SOIC-8 packaging.
Technical Context
The TLC372IDR integrates two independent CMOS differential comparators on a single die, each featuring high-gain input stages and n-channel open-drain output transistors. Its input stage supports common-mode voltages from ground to VDD−1.5V over full temperature range, enabling direct interfacing with sensors and reference sources without level-shifting.
Each comparator's output sinks current only and requires an external pull-up resistor-enabling wired-AND logic, voltage-level translation up to 16V, and flexible interface with diverse logic families. Internal ESD protection (1000V HBM) and absence of phase inversion within specified input ranges ensure robust operation in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 16V - supports both single-supply (e.g., 5V, 12V) and dual-supply configurations with ≥3V total differential. |
| Input Bias Current | 5pA typical - enables direct connection to high-impedance sources (e.g., photodiodes, RC timing networks) without loading error. |
| Response Time | 200ns typical (100mV overdrive, 5V supply) - suitable for fast edge detection in digital control loops and pulse-width monitoring. |
| Input Offset Voltage | 5mV max at 25°C - ensures accurate threshold setting in precision window comparators and undervoltage lockout circuits. |
| Common-Mode Input Range | 0V to VDD−1.5V - includes ground reference, allowing direct sensing of signals referenced to system GND without biasing resistors. |
| Output Configuration | Open-drain N-channel - permits logic-level translation, wired-AND combining, and pull-up to voltages independent of VDD (up to 16V). |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded systems including PLC I/O modules and motor controllers. |
Pinout & Package
Package: SOIC-8 (D package), tape-and-reel orderable variant (R suffix). Pinout validated per TI SLCS114F datasheet Figure 4-1 for TLC372I-grade devices in D package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - must be pulled up externally; sinks current when IN+ < IN−. |
| 2 | IN− A | Inverting input of Comparator A - high-impedance node (10¹²Ω); accepts DC or slowly varying analog signals. |
| 3 | IN+ A | Non-inverting input of Comparator A - same impedance and bias characteristics as IN− A. |
| 4 | GND | Ground reference for V− terminal - serves as return path for both comparators and pull-up resistors. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Channel A; shares same input specs. |
| 6 | IN− B | Inverting input of Comparator B - supports independent threshold configuration from Channel A. |
| 7 | OUT B | Open-drain output of Comparator B - functionally identical to OUT A; enables dual independent decision outputs. |
| 8 | VDD | Positive supply terminal - powers both comparators; accepts 3V–16V; no internal regulation required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5pA typical - preserves signal integrity in high-Z sensor interfaces and long RC time-constant circuits. |
| Wide supply voltage range | 3V–16V - eliminates need for dedicated LDOs in mixed-voltage systems (e.g., 3.3V logic + 12V analog rails). |
| Open-drain output architecture | Supports wired-AND logic and level translation up to 16V - simplifies interface with legacy TTL, modern CMOS, or isolated gate drivers. |
| ESD-protected inputs/outputs | 1000V HBM rating - reduces risk of field failure during handling or in unshielded industrial enclosures. |
| Ground-sensing common-mode range | Includes 0V - enables direct monitoring of battery voltage, supply rails, or ground-referenced thermistor dividers without offset circuitry. |
Applications
| Power Supply Monitoring | Battery Management System |
|---|---|
Use Scenario: Detecting overvoltage and undervoltage conditions on a 24V PLC power rail using a resistor divider and 2.5V reference. IC Role / Device Role / Timing Role: Dual comparator implementing window comparator topology - one channel triggers UV alert, the other OV alert. Use Value: Enables fail-safe shutdown before damage occurs; leverages TLC372IDR's low input bias current to maintain divider accuracy without loading error. |
Use Scenario: Monitoring cell voltage thresholds in a 3S Li-ion pack to trigger charge enable/disable and fault alerts. IC Role / Device Role / Timing Role: Precision threshold detector comparing scaled cell voltage against stable reference; open-drain outputs drive microcontroller GPIOs or latch circuits. Use Value: Achieves ±1% threshold accuracy over temperature due to 5mV max VIO and −40°C to +85°C qualification. |
| Motor Control Feedback | Industrial Sensor Interface |
Use Scenario: Converting analog current-sense amplifier output into digital enable/disable signal for H-bridge gate drivers. IC Role / Device Role / Timing Role: Fast-response comparator detecting overcurrent events with <200ns latency to prevent MOSFET destruction. Use Value: 200ns typical propagation delay ensures timely intervention before thermal runaway; open-drain output interfaces directly with 5V logic-level gate driver inputs. |
Use Scenario: Interfacing with high-impedance pH or gas sensors whose output varies slowly across mV-level ranges. IC Role / Device Role / Timing Role: High-input-impedance front-end comparator converting analog sensor output into clean digital flag for microcontroller polling. Use Value: 10¹²Ω input impedance prevents sensor loading; 5pA bias current avoids drift in µA-range sensor currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Bipolar input stage; 250nA input bias current; 2mV max VIO; slower 1.3µs response; no ESD rating specified. | Higher power consumption (500µA vs 150µA); unsuitable for ultra-high-Z sources or battery-powered designs. | Select LM393DR only where cost is primary constraint and input impedance >10⁹Ω is acceptable. |
| TLC372CDR | Same silicon, commercial temperature grade (0°C to 70°C); identical electrical specs except operating range. | Not rated for industrial ambient extremes; unsuitable for outdoor or factory-floor deployments. | Choose TLC372CDR only for consumer or lab-grade equipment with controlled thermal environments. |
Compared with LM393DR and TLC372CDR, the TLC372IDR uniquely combines industrial temperature range, picoampere input bias, and sub-200ns speed-making it the only option among the three qualified for high-accuracy, low-power, wide-temperature industrial sensing.
Availability
TLC372IDR is available at Aetrix Electronics and suitable for power supply monitoring, battery management systems, and motor control feedback requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC372IDR 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 expertise in precision analog ICs and industrial-grade components.
The TLC372 product line was engineered for low-power, high-accuracy voltage comparison in industrial automation, instrumentation, and energy management systems-emphasizing input integrity, supply flexibility, and ruggedized operation.
FAQ
What is the maximum supply voltage for TLC372IDR?
The absolute maximum supply voltage for TLC372IDR is 18V, but the recommended operating range is 3V to 16V per the datasheet. Operation above 16V risks exceeding safe power dissipation limits and may degrade long-term reliability. The device is commonly used at 5V and 12V in industrial applications, and TLC372IDR maintains full specification compliance across this entire range.
Does TLC372IDR support single-supply operation with ground-referenced inputs?
Yes, TLC372IDR fully supports single-supply operation with ground-referenced inputs. Its common-mode input voltage range extends from 0V to VDD−1.5V across the full −40°C to +85°C temperature range. This allows direct connection of IN+ or IN− to system ground or ground-referenced sensor outputs without external biasing, a key advantage over many bipolar comparators. The TLC372IDR datasheet explicitly confirms this capability in Section 5.2 and 5.3.
Can TLC372IDR outputs be tied together for wired-AND logic?
Yes, TLC372IDR's open-drain outputs are specifically designed for wired-AND configurations. Connecting OUT A and OUT B together with a shared pull-up resistor creates a logical AND function: the combined output goes LOW only if both comparators assert LOW simultaneously. This is confirmed in the "Description" section and functional block diagram of the TLC372IDR datasheet, and is widely used in alarm consolidation and safety interlock circuits.
What is the input offset voltage specification for TLC372IDR?
The input offset voltage for TLC372IDR is guaranteed ≤5mV at 25°C and ≤10mV over the full −40°C to +85°C operating range. This value is measured under standard test conditions (VDD = 5V, VIC = VICRmin) and reflects worst-case deviation between the two inputs that causes erroneous switching. Designers use this spec to calculate minimum detectable voltage differences in threshold detection circuits using the TLC372IDR.
Is TLC372IDR pin-compatible with LM393?
Yes, TLC372IDR is pin-compatible with LM393 in SOIC-8 (D) packaging, sharing identical pin assignments for VDD, GND, IN+, IN−, and open-drain outputs. This allows drop-in replacement in existing LM393 designs where improved input bias current (5pA vs 250nA), lower supply current (150µA vs 500µA), and wider supply range (3–16V vs 2–36V) are beneficial. The TLC372IDR datasheet explicitly states this compatibility in the "Features" section.
TLC372IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 2
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 3V ~ 16V, ±1.5V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 400µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC372IDR FAQ
1.How can I place an order for TLC372IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372IDR 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 TLC372IDR reliable?
The price and inventory of TLC372IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372IDR is usually 5 days.
3.What payment methods are accepted for TLC372IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372IDR?
TLC372IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372IDR 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 TLC372IDR?
For technical support, including TLC372IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372IDR requirements.
6.How does Aetrix verify that TLC372IDR is sourced from the original manufacturer or authorized distributors?
All TLC372IDR 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 TLC372IDR meets industry standards.
7.What is the process for return or replacement of TLC372IDR?
All TLC372IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC372IDR, 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 TLC372IDR part is unused and in its original packaging.
Return procedure for TLC372IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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