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Texas Instruments TLC374MJ
- Part No.:
- TLC374MJ
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
TLC374MJ.pdf
- Description:
- LOW-POWER LINCMOS QUAD COMPARATO
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
TLC374MJ from Texas Instruments is a military-grade LinCMOS™ quadruple differential comparator IC operating over –55°C to 125°C, featuring 5 mV max input offset voltage at 25°C, 0.3 mA typical supply current at 5 V, 200 ns typical response time for TTL-level inputs, and n-channel open-drain outputs compatible with TTL/MOS/CMOS logic-used in precision threshold detection within avionics power monitoring systems.
For engineers reviewing the TLC374MJ datasheet, TLC374MJ pinout, TLC374MJ application, or TLC374MJ equivalent, key selection criteria include its military temperature rating, ultra-low 5 pA typical input bias current, single/dual-supply operation (2–18 V), ESD-hardened LinCMOS process, and pin compatibility with LM339 in CDIP-14 packaging.
Technical Context
The TLC374MJ implements four independent high-impedance comparators using Texas Instruments' LinCMOS™ process, enabling direct interfacing with high-Z sources such as precision voltage dividers or sensor bridges. Each comparator features rail-to-rail common-mode input range (including ground) and operates with supply voltages from 2 V to 18 V in single- or dual-supply configurations.
Its n-channel open-drain output stage supports wired-AND logic and level translation across mixed-voltage systems. Internal ESD protection meets 1000-V HBM rating, and input offset voltage stability is specified at ≤0.23 µV/month-including first 30 days-ensuring long-term accuracy in unattended systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 18 V - supports wide-input industrial and military power rails without external regulation |
| Input Bias Current | 5 pA typ - enables use with megaohm-level sensor sources without signal loading |
| Input Offset Voltage | 5 mV max at 25°C - ensures reliable threshold detection with ±2.5 mV margin under worst-case conditions |
| Response Time | 200 ns typ (TTL step) - delivers fast decision-making in real-time fault-detection circuits |
| Operating Temperature | –55°C to 125°C - qualified for full military temperature range per MIL-PRF-38535 |
| Output Configuration | N-channel open-drain - allows flexible pull-up selection and wired-AND bus implementation |
| ESD Rating | 1000 V HBM - provides robust handling during board assembly and field maintenance |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP), 14-pin, hermetically sealed, lead finish SNPB, RoHS-exempt, MSL N/A - suitable for high-reliability aerospace and defense applications requiring moisture immunity and thermal cycling resilience.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 5, 6, 8, 9, 12, 13, 14 | Comparator Inputs (1IN+, 1IN−, 2IN+, 2IN−, 3IN+, 3IN−, 4IN+, 4IN−) | Differential sensing nodes; each pair drives one comparator channel with 10¹² Ω input impedance |
| 3 | VDD | Positive supply rail - accepts 2–18 V; powers all four comparators and internal ESD structures |
| 7 | GND | Ground reference - common return for all channels and substrate bias |
| 4, 10, 11, 13 | Outputs (1OUT, 2OUT, 3OUT, 4OUT) | N-channel open-drain outputs - require external pull-up; support wired-AND logic and mixed-voltage interfacing |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ Process Technology | Enables ultra-low input bias current (5 pA typ) and high input impedance (>10¹² Ω) for minimal source loading |
| Wide Supply Range | 2–18 V operation eliminates need for dedicated bias supplies in multi-rail systems |
| Input Common-Mode Range | Includes ground - allows direct sensing of signals referenced to system GND without level-shifting |
| Output Compatibility | TTL/MOS/CMOS logic-level interoperability - simplifies integration into legacy and modern digital subsystems |
| Military Temperature Qualification | –55°C to 125°C operation - certified per MIL-PRF-38535 for deployment in harsh environmental enclosures |
Applications
| Avionics Power Sequencing | Satellite Bus Voltage Monitoring |
|---|---|
Use Scenario: Detecting undervoltage/overvoltage faults on 28 V DC aircraft distribution buses during engine start and flight phases. IC Role / Device Role / Timing Role: Quadruple comparator performing simultaneous threshold checks on primary, backup, and redundant bus rails. Use Value: 200 ns response ensures sub-millisecond fault capture before downstream protection triggers, preserving system integrity. |
Use Scenario: Monitoring regulated 3.3 V, 5 V, and ±15 V rails in satellite payload electronics under thermal vacuum conditions. IC Role / Device Role / Timing Role: Independent comparator channels assigned to each rail, driving FPGA configuration enable lines via open-drain wired-AND. Use Value: –55°C to 125°C qualification guarantees stable operation across orbital thermal extremes without calibration drift. |
| Missile Guidance Sensor Interface | Ground-Based Radar Signal Conditioning |
Use Scenario: Converting analog outputs from radiation-hardened accelerometers and gyros into digital status flags for flight control logic. IC Role / Device Role / Timing Role: High-impedance comparator front-end rejecting noise from long harness runs while preserving signal fidelity. Use Value: 5 pA input bias current prevents DC error accumulation in high-resistance sensor bridges, maintaining <1 LSB accuracy. |
Use Scenario: Threshold detection on RF detector outputs in pulse-Doppler radar receivers to trigger gain control and clutter suppression. IC Role / Device Role / Timing Role: Fast-response comparator detecting leading edge of received pulses to synchronize timing recovery circuits. Use Value: 200 ns propagation delay enables precise pulse-width discrimination down to 500 ns resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339J | BJT-based; 25 µA typical supply current; 1.3 µs typical response; no ESD protection circuitry | Lower cost but unsuitable for low-power or ESD-prone environments; limited to 70°C commercial grade | Select LM339J only for non-critical, cost-sensitive designs where power and speed are secondary |
| TLC374MFKB | LCCC-20 ceramic package; identical electrical specs; higher pin count due to NC and power/ground redundancy | Used in high-density hybrid microcircuits requiring surface-mount assembly and enhanced thermal dissipation | Choose TLC374MFKB when board space permits LCCC footprint and thermal management exceeds CDIP capability |
Compared with LM339J and TLC374MFKB, the TLC374MJ uniquely balances military temperature range, ultra-low power (0.3 mA), nanosecond-speed response, and integrated ESD protection in a through-hole CDIP-14 package-making it optimal for retrofitting legacy avionics with improved reliability without PCB redesign.
Availability
TLC374MJ is available at Aetrix Electronics and suitable for avionics power sequencing, satellite bus monitoring, missile guidance sensor interfaces, and ground-based radar signal conditioning requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TLC374MJ 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 TLC374 family was designed specifically for precision threshold detection in harsh-environment systems requiring low power, high input impedance, and guaranteed operation across extreme temperatures.
FAQ
What is the maximum operating temperature range for the TLC374MJ?
The TLC374MJ is fully characterized and qualified for continuous operation from –55°C to 125°C, meeting MIL-PRF-38535 requirements for military-grade devices. This range is explicitly confirmed in the "AVAILABLE OPTIONS" table and "absolute maximum ratings" section of the SLCS118C datasheet, where TLC374M variants-including TLC374MJ-are designated for the full military temperature range.
Does the TLC374MJ have internal ESD protection, and what is its rating?
Yes, the TLC374MJ incorporates Texas Instruments' patented LinCMOS™ ESD protection circuitry and is rated at 1000 V per Human Body Model (HBM), as stated in the "description" and "PRINCIPLES OF OPERATION" sections. This protection applies to all input and output pins and has been validated per JEDEC JS-001 standards, enabling safe handling during assembly without external clamping diodes.
Is the TLC374MJ pin-compatible with the LM339?
Yes, the TLC374MJ is pin-compatible with the LM339 in the CDIP-14 package, as explicitly noted in the "description" section: "Pin-Compatible With LM339". Pin assignments for inputs, outputs, VDD, and GND match identically, allowing direct replacement in existing LM339-based layouts without PCB modification-provided supply voltage and loading conditions remain within TLC374MJ specifications.
What is the typical supply current consumption of the TLC374MJ at 5 V?
The TLC374MJ draws 300 µA typical supply current (IDD) at VDD = 5 V and TA = 25°C, as specified in the "electrical characteristics" table on page 5 of SLCS118C. Under full-temperature operation (–55°C to 125°C), IDD rises to 800 µA maximum-still significantly lower than bipolar comparators like LM339 (2 mA typical), enabling battery-backed or low-quiescent systems.
What output configuration does the TLC374MJ use, and how should it be interfaced?
The TLC374MJ uses n-channel open-drain outputs (1OUT–4OUT), requiring external pull-up resistors to VDD or another logic rail. This configuration enables wired-AND logic, level translation, and shared-bus signaling-as confirmed in the "description" and "equivalent schematic" sections. Pull-up values between 1 kΩ and 10 kΩ are typical, with 4 mA sink capability per output verified at VOL ≤ 400 mV.
TLC374MJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 4V ~ 16V, ±2V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA (Typ)
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 600µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 200ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-CDIP
TLC374MJ FAQ
1.How can I place an order for TLC374MJ through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC374MJ 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 TLC374MJ reliable?
The price and inventory of TLC374MJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC374MJ is usually 5 days.
3.What payment methods are accepted for TLC374MJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC374MJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC374MJ?
TLC374MJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC374MJ 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 TLC374MJ?
For technical support, including TLC374MJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC374MJ requirements.
6.How does Aetrix verify that TLC374MJ is sourced from the original manufacturer or authorized distributors?
All TLC374MJ 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 TLC374MJ meets industry standards.
7.What is the process for return or replacement of TLC374MJ?
All TLC374MJ units undergo pre-shipment inspection (PSI). If there is an issue with TLC374MJ, 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 TLC374MJ part is unused and in its original packaging.
Return procedure for TLC374MJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC374MJ Tags
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