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Texas Instruments TLC393MD
- Part No.:
- TLC393MD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
TLC393MD.pdf
- Description:
- DUAL COMPARATOR
- Quantity:
- Payment:
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Inventory:853
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Product details
Overview
TLC393MD from Texas Instruments is a dual micropower voltage comparator with open-drain CMOS outputs, designed for single-supply operation from 4 V to 16 V across the full military temperature range (−55°C to 125°C). It delivers 110 µW typical supply power at 5 V, 2.5 µs typical propagation delay (tPLH) with 5-mV overdrive, and ≤5 mV input offset voltage at 25°C - enabling precision threshold detection in harsh-environment power monitoring and motor control systems.
For engineers reviewing the TLC393MD datasheet, TLC393MD pinout, TLC393MD application, or TLC393MD equivalent, key selection considerations include its military-grade thermal robustness, ultra-low quiescent current, open-drain output compatibility with mixed-voltage logic interfaces, and LinCMOS® process advantages including high input impedance (>1012 Ω) and stable offset under differential stress.
Technical Context
The TLC393MD implements two independent comparators using Texas Instruments' LinCMOS® process, delivering CMOS-level power efficiency without sacrificing speed or analog precision. Its input stage features extremely low bias current (≤5 pA typ at 25°C) and stable offset voltage (≤5 mV max at 25°C), even under ±18 V differential input stress.
Each comparator has an open-drain MOS output capable of sinking up to 20 mA, requiring an external pull-up resistor for logic-level translation. The device supports common-mode input voltages from 0 V to (VDD − 1.5 V) across its full −55°C to 125°C operating range, ensuring reliable operation in wide-input-range sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 16 V - enables direct interface with 5 V, 12 V, and unregulated industrial rails without level-shifting. |
| Quiescent Supply Current | 22–40 µA typ (both comparators, 25°C) - supports battery-powered or energy-constrained systems with multi-year runtime. |
| Input Offset Voltage | ≤5 mV max at 25°C, ≤10 mV max over −55°C to 125°C - ensures accurate voltage thresholding in precision supervisory circuits. |
| Propagation Delay (tPLH) | 2.5 µs typ at 5 V, 5-mV overdrive - provides fast response for real-time fault detection and PWM timing. |
| Input Bias Current | ≤5 pA typ at 25°C - minimizes loading on high-impedance sensor sources such as thermistors or photodiodes. |
| Common-Mode Input Range | 0 V to (VDD − 1.5 V) over full temperature range - allows direct sensing of signals near ground or rail without attenuation networks. |
| Output Sink Current | 20 mA per channel - drives standard LEDs, optocouplers, or logic inputs with minimal external components. |
Pinout & Package
Package: Ceramic Dual-In-Line Package (CDIP), 8-pin, hermetically sealed for military reliability and moisture resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Open-drain output of comparator 1 - requires external pull-up; sinks current when active-low output asserted. |
| 2 | 1IN− | Inverting input of comparator 1 - used for reference voltage connection in inverting configurations. |
| 3 | 1IN+ | Non-inverting input of comparator 1 - accepts sensed signal for threshold comparison. |
| 4 | GND | Analog/digital ground reference - must be low-impedance return path for stable comparator operation. |
| 5 | VDD | Positive supply rail - powers both comparators and internal ESD protection circuitry. |
| 6 | 2OUT | Open-drain output of comparator 2 - independently controllable; shares no internal resources with comparator 1. |
| 7 | 2IN− | Inverting input of comparator 2 - supports dual-threshold or window-comparator topologies. |
| 8 | 2IN+ | Non-inverting input of comparator 2 - enables simultaneous monitoring of two independent analog signals. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS® Process Technology | Delivers <10 pA input bias current and stable offset voltage under differential stress - critical for high-impedance sensor interfacing. |
| Military Temperature Rating | −55°C to +125°C operation - qualified for aerospace, defense, and downhole industrial systems where commercial/industrial grades fail. |
| On-Chip ESD Protection | Withstands ≥2000 V per MIL-STD-883C Method 3015.2 - reduces need for external transient suppression in ruggedized designs. |
| Single-Supply Operation | Operates from 4 V to 16 V with rail-to-rail input capability - eliminates dual-supply complexity in embedded power management. |
| Dual Independent Comparators | Two fully isolated channels in one package - enables compact window detection, dual-supply monitoring, or phase-comparison logic. |
Applications
| Power Supply Supervision | Motor Control Feedback |
|---|---|
|
Use Scenario: Monitoring 5-V and 12-V DC rails in avionics subsystems to trigger early power-fail interrupts before brownout. IC Role / Device Role / Timing Role: Dual comparator performs independent undervoltage lockout (UVLO) on each rail with hysteresis via external feedback. Use Value: Enables deterministic system reset and graceful shutdown using only one TLC393MD, reducing BOM count and PCB area versus discrete solutions. |
Use Scenario: Generating pulse-width-modulated (PWM) drive signals for brushed DC motor speed control in unmanned ground vehicles. IC Role / Device Role / Timing Role: One comparator compares ramp oscillator voltage against potentiometer-adjustable threshold; second comparator handles direction logic. Use Value: Achieves precise, low-jitter PWM generation with <2.5 µs response - critical for smooth torque delivery and EMI reduction. |
| Two-Phase Clock Generation | High-Reliability Sensor Interface |
|
Use Scenario: Creating nonoverlapping clock phases for synchronous sampling in radiation-hardened data acquisition modules. IC Role / Device Role / Timing Role: Configured as astable multivibrator with cross-coupled feedback to generate complementary, dead-time-controlled outputs. Use Value: Eliminates timing skew between phases (<100 ns variation) across −55°C to 125°C - ensures glitch-free state transitions in FPGA control logic. |
Use Scenario: Conditioning low-level signals from platinum RTD sensors in turbine engine temperature monitoring. IC Role / Device Role / Timing Role: Comparator detects crossing of calibrated reference thresholds with sub-5-mV offset error, rejecting common-mode noise. Use Value: Maintains measurement accuracy despite 125°C ambient and 18-V transients - validated per MIL-PRF-38534 Class H requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393MD | Higher quiescent current (500 µA vs. 40 µA), wider offset (7 mV max), same CDIP-8 package and military temp rating. | Lacks LinCMOS® input performance - unsuitable for high-impedance or low-power sensor front-ends. | Select LM393MD only if legacy qualification or absolute cost minimization outweighs power and precision requirements. |
| TLC3702MD | Push-pull outputs (no external pull-up needed), slightly higher supply current (120 µA), identical LinCMOS® input specs and military rating. | Better suited for driving TTL/CMOS loads directly; less flexible for open-collector bus interfacing or level translation. | Choose TLC3702MD when driving logic gates or microcontroller inputs directly without external resistors is prioritized. |
Compared with LM393MD and TLC3702MD, the TLC393MD uniquely balances ultra-low power (110 µW), precision input performance (≤5 mV offset), and open-drain flexibility - making it optimal for military-grade power supervision and sensor thresholding where both efficiency and reliability are non-negotiable.
Availability
TLC393MD is available at Aetrix Electronics and suitable for aerospace power sequencing, defense-grade motor controllers, and downhole instrumentation requiring stable component supply across extended temperature extremes and long product lifecycles.
Supply support for TLC393MD 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 heritage in high-reliability military and aerospace components.
The TLC393MD belongs to TI's LinCMOS® comparator family, engineered specifically for applications demanding micropower operation, rail-to-rail input capability, and guaranteed performance across extreme military temperature ranges.
FAQ
What is the maximum operating temperature range for the TLC393MD?
The TLC393MD is characterized for continuous operation from −55°C to +125°C, meeting MIL-PRF-38534 Class H requirements. This full military temperature range is explicitly confirmed in the datasheet's "recommended operating conditions" table for TLC393M and TLC193M variants, and applies to the TLC393MD orderable part number in the CDIP (JG) package.
Does the TLC393MD require external pull-up resistors on its outputs?
Yes, the TLC393MD features open-drain CMOS outputs (1OUT and 2OUT), which can only sink current. Each output requires an external pull-up resistor to VDD or another logic rail to establish a valid high-level voltage. Typical values range from 2.2 kΩ to 10 kΩ depending on speed and load requirements - as shown in Figures 19–21 of the datasheet.
What is the input offset voltage specification for the TLC393MD over temperature?
The TLC393MD has a maximum input offset voltage of 10 mV over its full operating range of −55°C to +125°C, with a tighter 5 mV maximum at 25°C. This value is specified in the "electrical characteristics" table for TLC193M/TLC393M under Note 4 and confirmed in the "TLC393MD" entry in the "AVAILABLE OPTIONS" table on page 2 of the datasheet.
Can the TLC393MD operate from a 3-V supply?
No, the TLC393MD is rated for a minimum supply voltage of 4 V, as stated in the "recommended operating conditions" table for TLC393M/TLC193M. While the TLC393C and TLC393I variants support 3 V, the "M" suffix denotes the military-grade version with 4 V minimum - a hard limit verified in absolute maximum ratings and functional testing sections.
Is the TLC393MD pin-compatible with the LM393 series?
Yes, the TLC393MD uses the same 8-pin CDIP (JG) package and identical pinout as the LM393MD: pins 1/6 are outputs, 2/3/7/8 are inputs, 4 is GND, and 5 is VDD. This mechanical and functional pin compatibility is confirmed by the shared "D, JG, P, OR PW PACKAGE (TOP VIEW)" diagram in the datasheet, which applies to all TLC393x and LM393x variants in those packages.
TLC393MD 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:
- -
- :
- -
TLC393MD FAQ
1.How can I place an order for TLC393MD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC393MD 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 TLC393MD reliable?
The price and inventory of TLC393MD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC393MD is usually 5 days.
3.What payment methods are accepted for TLC393MD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC393MD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC393MD?
TLC393MD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC393MD 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 TLC393MD?
For technical support, including TLC393MD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC393MD requirements.
6.How does Aetrix verify that TLC393MD is sourced from the original manufacturer or authorized distributors?
All TLC393MD 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 TLC393MD meets industry standards.
7.What is the process for return or replacement of TLC393MD?
All TLC393MD units undergo pre-shipment inspection (PSI). If there is an issue with TLC393MD, 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 TLC393MD part is unused and in its original packaging.
Return procedure for TLC393MD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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