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Texas Instruments TLC372CP
- Part No.:
- TLC372CP
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC372CP.pdf
- Description:
- IC COMPARATOR 2 DIFF 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:873
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Product details
Overview
TLC372CP 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), 5pA typical input bias current, and 150µA typical supply current at 5V - enabling precision threshold detection in battery-powered and industrial sensing systems.
For engineers reviewing the TLC372CP datasheet, TLC372CP pinout, TLC372CP application, or TLC372CP equivalent, key selection considerations include its rail-to-rail common-mode input range (including ground), ultra-low input offset voltage (1–5mV max), open-drain output compatibility with TTL/MOS/CMOS logic families, and pin-compatibility with LM393 for drop-in replacement in legacy designs.
Technical Context
The TLC372CP integrates two independent high-impedance (10¹²Ω typical) CMOS differential comparators on a single die, each featuring an n-channel open-drain output stage capable of sinking up to 16mA per channel. Its input stage operates with no phase inversion over the full common-mode range (0V to VDD−1.5V), supporting direct interfacing with high-impedance sensors and reference sources.
Internal ESD protection (1000V HBM) and ultra-stable input offset voltage enable reliable operation in noisy industrial environments. The device is characterized for 0°C to 70°C operation and supports wired-AND logic via shared pull-up resistors - a critical capability for window detection, power sequencing, and alarm aggregation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 16V - enables direct operation from Li-ion batteries (3.3V/3.7V), 5V logic rails, and 12V industrial supplies without regulation. |
| Input Bias Current | 5pA typical - preserves signal integrity when interfacing with high-impedance sources like photodiodes or precision voltage dividers. |
| Response Time | 200ns typical (100mV overdrive) - supports fast edge detection in motor control feedback, overcurrent trip, and pulse-width monitoring. |
| Input Offset Voltage | 1–5mV max at 25°C - ensures accurate threshold crossing in precision voltage monitoring (e.g., ±1% window detection). |
| Output Sink Current | 6–16mA per channel - drives standard LED indicators, optocouplers, or MOSFET gate resistors without external buffers. |
| Common-Mode Range | 0V to VDD−1.5V - allows ground-referenced inputs and direct connection to unbuffered sensor outputs. |
| ESD Rating | 1000V HBM - meets basic handling requirements for assembly in non-classified manufacturing environments. |
Pinout & Package
Package: 8-pin Plastic Dual In-line Package (PDIP), body width 0.300 inch, lead finish matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up resistor; sinks current when IN+ < IN−. |
| 2 | IN− A | Inverting input of Comparator A - accepts signals within 0V to VDD−1.5V; high-impedance node. |
| 3 | IN+ A | Non-inverting input of Comparator A - same voltage range and impedance as IN− A. |
| 4 | GND | Ground reference for both comparators and internal circuitry - must be low-impedance return path. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Channel A; identical specs. |
| 6 | IN− B | Inverting input of Comparator B - supports independent threshold setting from Channel A. |
| 7 | OUT B | Open-drain output of Comparator B - enables independent or wired-AND logic with OUT A. |
| 8 | VDD | Positive supply pin - powers both comparators; accepts 3V–16V DC; bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Single/dual-supply operation | Operates from 3V–16V single supply or ±1.5V to ±8V split supply - simplifies power architecture in mixed-voltage systems. |
| Ultra-low input bias current | 5pA typical - eliminates loading error in high-Z sensor interfaces (e.g., thermistors, pH electrodes, capacitive touch). |
| Open-drain outputs | Supports level translation up to 16V and wired-AND logic - enables flexible interface with 3.3V/5V/12V logic families and microcontroller GPIOs. |
| Rail-to-rail common-mode range | Includes ground (0V) and extends to VDD−1.5V - permits direct sensing of signals referenced to system ground without level-shifting. |
| Pin-compatible with LM393 | Direct PCB replacement in existing designs - retains layout, bill-of-materials, and firmware while upgrading to CMOS performance. |
Applications
| Power Supply Monitoring | Motor Control Feedback |
|---|---|
|
Use Scenario: Detect undervoltage (UVLO) and overvoltage (OVLO) conditions on a 24V PLC power rail using a resistor divider and 2.5V reference. IC Role / Device Role / Timing Role: Dual comparator implements window detection - one channel triggers UVLO below 19.2V, the other triggers OVLO above 30V. Use Value: Enables fail-safe shutdown before damage occurs; 200ns response ensures rapid reaction to transient faults. |
Use Scenario: Monitor back-EMF zero-crossing in brushless DC motor commutation using hall-effect sensor outputs. IC Role / Device Role / Timing Role: Compares differential hall sensor signals to generate precise timing edges for electronic commutation. Use Value: 5pA input bias prevents signal distortion; rail-to-rail input range accommodates sensor offsets near ground or VDD. |
| Industrial Sensor Interface | LED Status Indication |
|
Use Scenario: Condition analog output from a 4–20mA pressure transducer for microcontroller ADC input or alarm triggering. IC Role / Device Role / Timing Role: Converts current-loop signal to digital logic level using precision voltage reference and hysteresis network. Use Value: 1–5mV offset voltage ensures <±0.1% threshold accuracy; open-drain output directly drives optocoupler input. |
Use Scenario: Drive red/green LEDs to indicate system status (e.g., "OK" vs. "FAULT") based on two independent voltage thresholds. IC Role / Device Role / Timing Role: Each comparator controls one LED via separate open-drain output and current-limiting resistor. Use Value: 16mA sink capability eliminates need for external transistor drivers; low 150µA supply current minimizes standby power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393P | Higher input bias current (25nA), slower response (1.3µs), bipolar process - consumes more power and less suitable for high-Z sources. | Compatible with legacy 5V-only designs but lacks rail-to-rail input range and CMOS low-power advantage. | Select LM393P only when cost is primary constraint and design already uses bipolar comparators with no high-Z interface requirements. |
| TLC372CD | Identical electrical specs and pinout; differs only in SOIC-8 package (smaller footprint, surface-mount) versus PDIP-8 (through-hole). | Same functional use cases; substitution requires PCB rework for mounting and soldering method. | Choose TLC372CD for space-constrained or automated assembly applications; TLC372CP remains optimal for prototyping, repair, or through-hole production. |
Compared with LM393P, TLC372CP offers 5000× lower input bias current and 6.5× faster response - critical for precision sensor conditioning. Compared with TLC372CD, it provides identical performance in a through-hole package ideal for manual assembly and field serviceability.
Availability
TLC372CP is available at Aetrix Electronics and suitable for industrial automation, battery-powered instrumentation, and embedded power management systems requiring stable component supply and long-term manufacturability.
Supply support for TLC372CP 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 TLC372CP belongs to TI's legacy CMOS comparator family, engineered for low-power, high-accuracy voltage comparison in harsh environments - targeting applications where input impedance, offset stability, and supply flexibility are critical.
FAQ
What is the operating temperature range for the TLC372CP?
The TLC372CP is characterized for operation from 0°C to 70°C ambient temperature. This commercial-grade rating makes it suitable for indoor industrial equipment, test instruments, and consumer electronics where environmental extremes are not expected. It is not rated for automotive or extended industrial temperature ranges - those require the TLC372IP (−40°C to 85°C) or TLC372MP (−55°C to 125°C) variants. Always verify thermal derating in high-power-density layouts.
Can the TLC372CP drive a 5V logic input directly?
Yes, the TLC372CP can interface with 5V logic inputs using an external pull-up resistor to 5V on its open-drain output. Since the output is sinking-only, connecting a 10kΩ pull-up to 5V yields a valid HIGH level (~5V) and LOW level (<400mV at 4mA load). This configuration maintains full noise margin and avoids level-shifter components - a key advantage confirmed in the datasheet's output compatibility section for TTL, MOS, and CMOS families.
Does the TLC372CP require hysteresis for stable operation?
Hysteresis is recommended when the input signal crosses the threshold slowly or contains noise near the switching point - otherwise, the TLC372CP may oscillate due to its high gain and low offset voltage. The datasheet explicitly warns against tying unused inputs together and provides resistor-network formulas for both inverting and non-inverting hysteresis configurations. For clean, fast-rising signals (e.g., clock edges), hysteresis is optional; for sensor outputs or power rails, it is strongly advised.
Is the TLC372CP pin-compatible with the LM393?
Yes, the TLC372CP is fully pin-compatible with the LM393 in the 8-pin PDIP package. Both devices share identical pin assignments (OUT A, IN− A, IN+ A, GND, IN+ B, IN− B, OUT B, VDD), allowing direct replacement without PCB modification. However, the TLC372CP upgrades performance with CMOS input stage benefits: 5000× lower input bias current, faster response, and rail-to-rail common-mode range - making it a functional and layout-compatible upgrade path.
What is the maximum sink current per output of the TLC372CP?
The TLC372CP supports a minimum sink current of 6mA and a typical sink current of 16mA per output at VDD = 5V and VOL = 1.5V, as specified in Section 5.3 of the datasheet. At higher supply voltages (e.g., 12V), the output can still sink ≥6mA, but VOL increases - for example, 700mV max at full temperature range with 4mA load. Designers should size pull-up resistors and load impedances accordingly to ensure VOL stays within downstream logic thresholds.
TLC372CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- LinCMOS™
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-PDIP
TLC372CP FAQ
1.How can I place an order for TLC372CP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372CP 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 TLC372CP reliable?
The price and inventory of TLC372CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372CP is usually 5 days.
3.What payment methods are accepted for TLC372CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372CP?
TLC372CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372CP 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 TLC372CP?
For technical support, including TLC372CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372CP requirements.
6.How does Aetrix verify that TLC372CP is sourced from the original manufacturer or authorized distributors?
All TLC372CP 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 TLC372CP meets industry standards.
7.What is the process for return or replacement of TLC372CP?
All TLC372CP units undergo pre-shipment inspection (PSI). If there is an issue with TLC372CP, 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 TLC372CP part is unused and in its original packaging.
Return procedure for TLC372CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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