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Texas Instruments TLC372MDRG4
- Part No.:
- TLC372MDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372MDRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,019
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Product details
Overview
TLC372MDRG4 from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for precision threshold detection in single- or dual-supply systems. It delivers 5 mV max input offset voltage, 150 µA typical supply current at 5 V, 200 ns typical propagation delay for TTL-level steps, and operates across −55°C to +125°C. It serves in overvoltage/undervoltage monitoring circuits for industrial power supplies.
For engineers reviewing the TLC372MDRG4 datasheet, TLC372MDRG4 pinout, TLC372MDRG4 application, or TLC372MDRG4 equivalent, key selection considerations include its military-grade temperature range, ultra-low input bias current (5 pA typ), rail-to-rail common-mode input capability, and compatibility with TTL/MOS/CMOS logic via external pull-up.
Technical Context
The TLC372MDRG4 integrates two independent high-impedance (10¹² Ω typ) CMOS differential comparators sharing a single supply (3–16 V) or dual supplies with 3–16 V total difference. Its input stage enables direct interfacing with high-impedance sensors and references without loading.
Each comparator features an n-channel open-drain output capable of sinking up to 16 mA while supporting logic-level translation - output pull-up voltage may range from 0 V to 16 V, independent of VDD. Internal ESD protection meets 1000 V HBM rating, and input common-mode range includes ground even under single-supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 16 V - supports wide-input industrial rails and battery-backed systems; minimum 4 V ensures stable operation over full military temperature range. |
| Input Offset Voltage | 1 mV (min), 5 mV (max) at 25°C - enables accurate threshold detection within ±5 mV tolerance without trimming. |
| Input Bias Current | 5 pA typical - preserves signal integrity when interfacing with high-impedance sources like photodiodes or precision voltage dividers. |
| Propagation Delay | 200 ns typical (100 mV overdrive, 5 V supply) - suitable for fast-response monitoring in PLC I/O modules and motor control safety interlocks. |
| Output Sink Current | 6 mA (min), 16 mA (max) at VOL = 1.5 V - drives standard LED indicators or MOSFET gate resistors directly without buffer stages. |
| Common-Mode Input Range | 0 V to VDD − 1.5 V over full temperature range - allows ground-referenced sensing and direct connection to unbuffered analog signals. |
| ESD Rating | 1000 V HBM - provides baseline handling robustness for assembly in non-ESD-controlled environments. |
Pinout & Package
Package: SOIC-8 (D package), 150 mil width, tape-and-reel (RG4 suffix). Pinout validated per TI SLCS114F Figure 4-1 (TLC372M D/P/PW package top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (Comparator 1) | Accepts reference or sensed signal; high-impedance node requiring guarded routing to avoid noise coupling. |
| 2 | Non-inverting input (Comparator 1) | Accepts monitored signal; common-mode range includes ground, enabling direct low-side current sense interface. |
| 3 | Output (Comparator 1) | Open-drain N-channel output - requires external pull-up resistor (1–10 kΩ typical) to define logic HIGH level and rise time. |
| 4 | GND | Power and signal reference plane; must be low-impedance connection to minimize ground bounce during output transitions. |
| 5 | Non-inverting input (Comparator 2) | Independent second sensing channel; electrically isolated from Comparator 1 inputs and outputs. |
| 6 | Inverting input (Comparator 2) | Second reference input; supports window comparator configurations with shared reference source. |
| 7 | Output (Comparator 2) | Open-drain output identical in behavior to Pin 3; enables wired-AND logic or independent alarm signaling. |
| 8 | VDD | Positive supply rail; requires 0.1 µF ceramic bypass capacitor placed <1 mm from pin to GND for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5 pA typical - eliminates voltage error in high-resistance divider networks (e.g., 1 MΩ+), critical for battery-monitoring accuracy. |
| Wide supply range | 4 V to 16 V - accommodates 5 V, 12 V, and 24 V industrial bus architectures without level-shifting circuitry. |
| Open-drain output architecture | Supports mixed-voltage logic interfacing (e.g., 3.3 V MCU inputs with 12 V pull-up) and wired-AND fault-bus aggregation. |
| Military temperature rating | −55°C to +125°C - qualified for avionics, downhole tools, and engine-control modules where extended thermal margins are mandatory. |
| Low quiescent current | 150 µA typical (both comparators) - extends battery life in always-on supervisory circuits (e.g., backup power monitors). |
Applications
| Overvoltage/Undervoltage Monitoring | Threshold-Based Power Sequencing |
|---|---|
|
Use Scenario: Real-time supervision of 24 V PLC power rail to trigger shutdown if voltage exceeds 30 V or drops below 19.2 V. IC Role / Device Role / Timing Role: Dual comparator implements window detection - one channel compares upper threshold, the other lower threshold against scaled rail voltage. Use Value: Enables fail-safe response within 200 ns, preventing damage to downstream 24 V logic and analog circuitry during transient overvoltage events. |
Use Scenario: Controlled startup sequence for multi-rail FPGA system requiring 1.2 V core before enabling 3.3 V I/O supply. IC Role / Device Role / Timing Role: Each comparator monitors dedicated supply rail; outputs drive enable pins of DC/DC converters via pull-up resistors. Use Value: Eliminates need for dedicated supervisor ICs - leverages existing board space and reduces BOM count while maintaining precise 5 mV threshold accuracy. |
| High-Impedance Sensor Interface | Level Translation & Wired-AND Logic |
|
Use Scenario: Direct connection to thermistor-based temperature sensor with 100 kΩ nominal resistance at 25°C. IC Role / Device Role / Timing Role: Comparator converts analog resistance change into clean digital alert signal; reference set by precision voltage divider. Use Value: 5 pA input bias avoids measurement error >0.5% in 100 kΩ networks - no calibration required across −55°C to +125°C operating range. |
Use Scenario: Aggregating fault signals from three independent subsystems onto single "SYSTEM FAULT" bus line. IC Role / Device Role / Timing Role: Open-drain outputs tied together with common pull-up; any low output forces bus low (positive-logic wired-AND). Use Value: Supports mixed-voltage subsystems (e.g., 5 V, 12 V, 24 V) on same fault bus - no level translators needed; simplifies diagnostics and reduces component count. |
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; 250 nA max input bias current; 2 mV max offset; rated for −40°C to +85°C only. | Lacks military temperature range and ultra-low bias current - unsuitable for high-impedance sensor interfaces above 85°C. | Select LM393DR only for cost-sensitive commercial designs where 250 nA bias and 85°C max ambient are acceptable. |
| TLC372CDR | Same die, commercial grade (0°C to 70°C); identical electrical specs except temperature limits and screening. | Not qualified for extended temperature operation - cannot replace TLC372MDRG4 in aerospace, defense, or automotive under-hood use. | Choose TLC372CDR only for lab equipment or indoor industrial controls where ambient stays within 0–70°C. |
Compared with LM393DR and TLC372CDR, the TLC372MDRG4 uniquely combines military-grade temperature resilience, picoampere input bias, and 5 mV offset stability - making it the sole option for high-reliability, high-impedance, wide-temperature threshold detection.
Availability
TLC372MDRG4 is available at Aetrix Electronics and suitable for overvoltage monitoring, power sequencing, and high-impedance sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC372MDRG4 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and industrial-grade components.
The TLC372MDRG4 belongs to TI's precision comparator product line, engineered for high-accuracy, low-power voltage threshold detection in harsh-environment applications including defense systems, oilfield instrumentation, and transportation control units.
FAQ
What is the maximum operating temperature range for the TLC372MDRG4?
The TLC372MDRG4 is characterized for continuous operation from −55°C to +125°C, meeting MIL-PRF-38535 requirements for military-grade reliability. This full-range specification is confirmed in Section 2 of the TI SLCS114F datasheet and distinguishes it from commercial (0°C to 70°C) and industrial (−40°C to 85°C) variants. The TLC372MDRG4 maintains all electrical parameters - including 5 mV max input offset and 150 µA supply current - across this entire span.
Does the TLC372MDRG4 support single-supply operation with ground-referenced inputs?
Yes, the TLC372MDRG4 supports true single-supply operation with inputs referenced to ground. Its common-mode input voltage range extends from 0 V to VDD − 1.5 V over the full −55°C to +125°C range, explicitly allowing ground as a valid input reference point. This capability is verified in Section 5.3 (VICR parameter) and Section 7.4.1 of the TI SLCS114F datasheet, enabling direct interface with low-side current-sense amplifiers and grounded thermistors without level-shifting circuitry.
What pull-up resistor value is recommended for the open-drain outputs of the TLC372MDRG4?
Texas Instruments recommends a pull-up resistor between 1 kΩ and 10 kΩ for the TLC372MDRG4 open-drain outputs. A 4.7 kΩ resistor is commonly used to balance rise time (<1 µs with 15 pF load) and power dissipation while ensuring VOL ≤ 400 mV at 4 mA sink current. Values below 1 kΩ increase power draw and risk exceeding the 20 mA absolute maximum output current; values above 100 kΩ degrade rise time and noise immunity. This guidance is detailed in Section 7.4.4 of the SLCS114F datasheet.
Is the TLC372MDRG4 pin-compatible with the LM393?
Yes, the TLC372MDRG4 is pin-compatible with the LM393 in SOIC-8 (D) package configuration, sharing identical pin assignments for VDD, GND, both inputs, and both outputs. However, functional equivalence is limited: the TLC372MDRG4 uses CMOS inputs (5 pA bias) versus bipolar inputs in the LM393 (250 nA bias), and offers wider supply range (4–16 V vs. 2–36 V) and military temperature rating. Pin compatibility enables drop-in replacement only where input bias and temperature requirements align.
How does the TLC372MDRG4 handle electrostatic discharge (ESD)?
The TLC372MDRG4 incorporates internal ESD protection diodes on all pins and is rated at 1000 V per Human Body Model (HBM), as specified in Section 2 and Section 7.4.2 of the TI SLCS114F datasheet. While this provides baseline handling robustness, TI cautions that exposure to ESD can degrade parametric performance. Therefore, standard ESD handling protocols - including grounded workstations, ionized air, and wrist straps - remain mandatory during PCB assembly and testing to preserve long-term offset voltage and propagation delay stability.
TLC372MDRG4 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:
- Discontinued at Digi-Key
- Type:
- Differential
- Number of Elements:
- 2
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 4V ~ 16V, ±2V ~ 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:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC372MDRG4 FAQ
1.How can I place an order for TLC372MDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372MDRG4 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 TLC372MDRG4 reliable?
The price and inventory of TLC372MDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372MDRG4 is usually 5 days.
3.What payment methods are accepted for TLC372MDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372MDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372MDRG4?
TLC372MDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372MDRG4 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 TLC372MDRG4?
For technical support, including TLC372MDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372MDRG4 requirements.
6.How does Aetrix verify that TLC372MDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC372MDRG4 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 TLC372MDRG4 meets industry standards.
7.What is the process for return or replacement of TLC372MDRG4?
All TLC372MDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC372MDRG4, 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 TLC372MDRG4 part is unused and in its original packaging.
Return procedure for TLC372MDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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