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Texas Instruments TLC372CD
- Part No.:
- TLC372CD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372CD.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,143
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Product details
Overview
TLC372CD from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for single- or dual-supply operation across 3V–16V. It delivers 200ns typical response time (TTL-level input step), 150µA typical supply current at 5V, and ultra-low 5pA typical input bias current. It operates over 0°C to 70°C and is used in precision threshold detection, window comparators, and level-shifting interfaces in industrial control and power monitoring systems.
For engineers reviewing the TLC372CD datasheet, TLC372CD pinout, TLC372CD application, or TLC372CD equivalent, key selection considerations include its open-drain output architecture, rail-to-rail common-mode input range including ground, 5mV max input offset voltage at 25°C, and compatibility with TTL/MOS/CMOS logic families - all critical for low-power, noise-immune analog decision circuits.
Technical Context
The TLC372CD implements two independent high-impedance (10¹²Ω typical) CMOS differential input stages driving n-channel open-drain output transistors. Each comparator supports common-mode input voltages from ground to VDD−1.5V across full temperature range and tolerates differential inputs up to ±18V.
Its ESD protection meets 1000V HBM rating, and internal clamping diodes require input signals to remain within 300mV of supply rails. The open-drain outputs enable wired-AND logic and level translation up to 16V, independent of VDD, with recommended pull-up currents between 100µA and 1mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 16V - supports battery-powered and industrial 12V/24V-derived logic rails without external regulators |
| Input Offset Voltage (max) | 5mV at 25°C - enables accurate threshold detection within ±2.5mV error at room temperature |
| Response Time | 200ns typical (100mV overdrive) - suitable for fast edge detection in digital timing and pulse-width monitoring |
| Input Bias Current | 5pA typical - preserves signal integrity when interfacing with high-impedance sensors or RC networks |
| Output Type | Open-drain N-channel - allows flexible pull-up to any voltage ≤16V and wired-AND bus configuration |
| Common-Mode Input Range | 0V to VDD−1.5V - includes ground reference, enabling direct sensing of signals referenced to system GND |
| ESD Rating (HBM) | 1000V - provides baseline handling robustness but requires ESD-safe PCB practices |
Pinout & Package
Package: SOIC-8 (D package), surface-mount, 150-mil body width, tape-and-reel compatible (TLC372CDR variant available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Comparator 1) | Accepts reference or signal for first comparator; high-impedance node requiring guarded routing |
| 2 | Non-inverting input (Comparator 1) | Accepts monitored signal or reference; common-mode range extends to ground |
| 3 | Output (Comparator 1) | Open-drain N-channel output - must be pulled up externally; sinks up to 16mA |
| 4 | GND | Power and signal reference plane; connects to system ground for single-supply operation |
| 5 | Non-inverting input (Comparator 2) | Second independent high-Z input; identical electrical specs to Pin 2 |
| 6 | Inverting input (Comparator 2) | Second independent high-Z input; identical electrical specs to Pin 1 |
| 7 | Output (Comparator 2) | Open-drain N-channel output - electrically isolated from Pin 3; supports independent pull-up |
| 8 | VDD | Positive supply rail; accepts 3V–16V; requires local 0.1µF ceramic bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| Single/dual-supply operation | Operates from 3V–16V single supply or ±1.5V to ±8V split supplies - simplifies power architecture in mixed-voltage systems |
| Ultra-low input bias current | 5pA typical - eliminates loading errors in high-Z sensor interfaces (e.g., photodiode amps, thermocouple buffers) |
| Wide common-mode input range | Includes ground and extends to VDD−1.5V - enables direct monitoring of signals tied to system GND without level shifters |
| Open-drain output compatibility | Supports TTL, MOS, and CMOS logic families - allows seamless integration into legacy and modern digital subsystems |
| Pin compatibility with LM393 | SOIC-8 footprint and signal mapping match LM393 - enables drop-in upgrade path for lower power and higher precision |
Applications
| Overvoltage/Undervoltage Detection | Zero-Crossing Detection |
|---|---|
Use Scenario: Monitoring 24V PLC power rail for fault conditions using a resistor divider and 2.5V reference. IC Role / Device Role / Timing Role: Dual comparator acts as window detector - one channel triggers UV alert below 19.2V, the other triggers OV alert above 30V. Use Value: Enables fail-safe shutdown before downstream damage; leverages open-drain outputs for wired-OR alarm signaling. | Use Scenario: Converting AC line voltage to clean digital zero-crossing pulses for phase-controlled dimmers or motor commutation. IC Role / Device Role / Timing Role: Comparator compares AC waveform against GND reference; hysteresis prevents chatter near zero crossing. Use Value: Achieves <200ns timing resolution with sub-mV noise immunity - critical for precise phase angle control in TRIAC-based loads. |
| Level Translation Interface | Battery Voltage Monitor |
Use Scenario: Interfacing 3.3V microcontroller GPIO to 12V industrial I/O lines using pull-up to 12V. IC Role / Device Role / Timing Role: Open-drain output pulls up to 12V while driven by 3.3V logic - functions as bidirectional level shifter for control signals. Use Value: Eliminates need for dedicated level-shifter ICs; supports 12V logic thresholds with 5pA input loading on MCU side. | Use Scenario: Monitoring Li-ion cell voltage during charging/discharging in portable medical devices. IC Role / Device Role / Timing Role: Compares cell voltage against 3.0V and 4.2V thresholds using precision resistive dividers. Use Value: Draws only 150µA total supply current - extends battery life in always-on monitoring applications without compromising accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher 250nA input bias current, 2mV max VIO, slower 1.3µs response, bipolar process | Less suitable for high-Z sources or fast timing; wider VIO tolerance reduces precision in tight-threshold designs | Select LM393DR only if cost is primary constraint and 5pA/200ns specs are non-critical |
| TLC372ID | Identical electrical specs but rated for −40°C to 85°C operating range; same D-package footprint | Required for extended-temperature industrial or automotive under-hood use cases | Choose TLC372ID when ambient exceeds 70°C; no layout or schematic changes needed |
Compared with LM393DR, TLC372CD offers 50× lower input bias current and 6.5× faster response - essential for sensor front-ends and real-time control. Versus TLC372ID, it trades extended temperature range for lower cost in commercial-grade applications.
Availability
TLC372CD is available at Aetrix Electronics and suitable for industrial power monitoring, battery management systems, and programmable logic controller (PLC) I/O modules requiring stable component supply and long-term obsolescence planning.
Supply support for TLC372CD 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 delivers low-power, high-precision dual comparators optimized for commercial-temperature industrial control, test equipment, and power system supervision - emphasizing accuracy, noise immunity, and supply flexibility.
FAQ
What is the maximum supply voltage rating for the TLC372CD?
The TLC372CD has an absolute maximum supply voltage (VDD) rating of 18V, per TI's SLCS114F datasheet Section 5.1. However, the recommended operating range is 3V to 16V. Exceeding 16V may compromise long-term reliability and is not guaranteed to meet electrical specifications. Always observe derating guidelines and thermal limits - especially with high output sink currents - to maintain performance stability in the TLC372CD.
Does the TLC372CD support rail-to-rail input operation?
The TLC372CD supports a common-mode input voltage range from 0V to VDD−1.5V across its full operating temperature range, meaning it includes ground but does not reach the positive rail. At 25°C, the range extends to VDD−1V. This allows direct interfacing with ground-referenced signals but requires external level shifting for inputs near VDD. The TLC372CD's input stage is not rail-to-rail on the high side, unlike some newer comparators.
Can the TLC372CD outputs drive a 5V logic load directly?
No - the TLC372CD features open-drain outputs that can only sink current. To interface with 5V logic, an external pull-up resistor to 5V is required. The output will be HIGH-Z when inactive and LOW (≤400mV at 4mA) when active. This architecture enables wired-AND logic and voltage-level translation, but the TLC372CD itself does not source current or generate a defined HIGH voltage level.
Is the TLC372CD pin-compatible with the LM393?
Yes - the TLC372CD is explicitly designed as a pin-compatible, functionally enhanced replacement for the LM393 in SOIC-8 (D) packages. Both share identical pin assignments (IN−, IN+, OUT, GND, IN+, IN−, OUT, VDD), allowing direct PCB substitution. However, the TLC372CD improves upon the LM393 with lower supply current, lower input bias current, faster response, and CMOS input stage advantages - making it a true drop-in upgrade where precision and power matter.
What is the operating temperature range specified for the TLC372CD?
The TLC372CD is characterized for operation from 0°C to 70°C, as confirmed in the Device Comparison Table and Section 5.2 Recommended Operating Conditions of the TI datasheet. This defines its commercial-grade temperature qualification. For extended-range alternatives, the TLC372ID (−40°C to 85°C) and TLC372QD (−40°C to 125°C) share identical electrical specs and D-package footprint but are qualified for harsher environments.
TLC372CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC372CD FAQ
1.How can I place an order for TLC372CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372CD 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 TLC372CD reliable?
The price and inventory of TLC372CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372CD is usually 5 days.
3.What payment methods are accepted for TLC372CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372CD?
TLC372CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372CD 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 TLC372CD?
For technical support, including TLC372CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372CD requirements.
6.How does Aetrix verify that TLC372CD is sourced from the original manufacturer or authorized distributors?
All TLC372CD 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 TLC372CD meets industry standards.
7.What is the process for return or replacement of TLC372CD?
All TLC372CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC372CD, 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 TLC372CD part is unused and in its original packaging.
Return procedure for TLC372CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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