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Texas Instruments LM193JG
- Part No.:
- LM193JG
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LM193JG.pdf
- Description:
- DUAL DIFFERENTIAL COMPARATOR 8-C
- Quantity:
- Payment:
- Shipping:
Inventory:2,884
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Product details
Overview
LM193JG from Texas Instruments is a dual differential comparator IC designed for military-grade operation across −55°C to +125°C, featuring open-collector outputs, 2 V to 36 V supply range, 2 mV typical input offset voltage, 25 nA typical input bias current, and compatibility with TTL/MOS/CMOS logic - deployed in motor control, weigh scale, and chemical sensor systems.
For engineers reviewing the LM193JG datasheet, LM193JG pinout, LM193JG application, or LM193JG equivalent, this page delivers verified electrical specifications, military-qualified thermal and ESD performance (±1000 V HBM), package-specific pin mapping for CDIP-8, and real-world design context for high-reliability analog threshold detection.
Technical Context
The LM193JG implements two independent PNP Darlington-pair input stages enabling rail-to-rail common-mode input down to ground and up to VCC−1.5 V at 25°C (VCC−2 V at temperature extremes), with low input bias current (25 nA typ) and fast response (1.3 µs typical at 100-mV overdrive).
Its open-drain NPN output stage sinks up to 6 mA while maintaining low saturation voltage (150–400 mV at 4 mA), supports wired-AND logic, and interfaces directly to 3.3 V/5 V/15 V/30 V logic domains via external pull-up - all while drawing only 0.8–2.5 mA total supply current independent of VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports single-supply industrial/military systems without level-shifting circuitry |
| Input Offset Voltage | 2 mV (typ) - enables accurate threshold detection within ±2 mV at room temperature |
| Input Bias Current | 25 nA (typ) - minimizes loading on high-impedance sensor sources like strain gauges or pH electrodes |
| Common-Mode Input Range | 0 V to VCC−1.5 V (25°C) - allows direct sensing referenced to ground in single-supply configurations |
| Output Sink Current | 6 mA (min) - drives standard LED indicators, relay coils, or logic inputs without external buffers |
| Response Time | 1.3 µs (typ, 100-mV overdrive) - suitable for sub-microsecond edge detection in motor commutation or fault monitoring |
| ESD Rating (HBM) | ±1000 V - meets MIL-STD-883 Class 3B handling requirements for ruggedized assembly environments |
Pinout & Package
Ceramic Dual In-Line Package (CDIP-8), 10.00 mm × 7.00 mm body size, hermetically sealed, with 0.100" lead pitch and SNPB (tin-lead) finish - qualified per MIL-PRF-38535 Class B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector NPN drain - requires external pull-up; sinks current when IN− > IN+ + VIO |
| 1IN− | Comparator 1 inverting input | Negative input terminal of first comparator; accepts signals from 0 V to VCC−1.5 V |
| 1IN+ | Comparator 1 non-inverting input | Positive input terminal of first comparator; same common-mode range as 1IN− |
| GND | Ground reference | System ground connection; common return for both comparators and supply decoupling |
| VCC | Positive supply | Single positive supply input (2–36 V); no negative supply required for operation |
| 2OUT | Comparator 2 output | Independent open-collector output - electrically isolated from 1OUT for dual-threshold designs |
| 2IN− | Comparator 2 inverting input | Second comparator's negative input; fully independent signal path from first comparator |
| 2IN+ | Comparator 2 non-inverting input | Second comparator's positive input; supports differential or single-ended reference configurations |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Two fully isolated voltage comparison channels in one CDIP-8 package - reduces board space vs discrete solutions |
| Wide supply range (2–36 V) | Operates from low-voltage battery rails (2 V) up to industrial 24/32-V systems without external regulators |
| Ground-sensing input stage | PNP Darlington input enables common-mode range down to 0 V - eliminates need for negative supply in sensor front-ends |
| Open-collector outputs | Supports wired-AND logic, mixed-voltage interfacing (e.g., 3.3 V MCU + 24 V actuator), and flexible pull-up selection |
| MIL-PRF-38535 qualification | Tested across −55°C to +125°C with full parameter screening - suitable for aerospace, defense, and downhole applications |
Applications
| Chemical or Gas Sensor Interface | AC Induction Motor Control |
|---|---|
Use Scenario: Detecting gas concentration thresholds using electrochemical or MOS-based sensors with mV-level output signals. IC Role / Device Role / Timing Role: Dual comparator provides hysteresis-enabled window detection and alarm triggering on sensor output drift. Use Value: 2 mV offset and 25 nA bias current preserve accuracy in high-impedance sensor chains; wide supply range accommodates 12 V or 24 V field power. | Use Scenario: Monitoring back-EMF zero-crossings and overcurrent conditions in three-phase inverter gate drivers. IC Role / Device Role / Timing Role: Comparator 1 detects rotor position via phase voltage crossing; Comparator 2 monitors DC-link current against trip threshold. Use Value: 1.3 µs response time ensures timely fault shutdown; open-collector outputs interface directly to 15 V optocoupler inputs. |
| Weigh Scale Load Cell Monitoring | Desktop PC Power Sequencing |
Use Scenario: Converting millivolt-level bridge outputs into digital logic for microcontroller ADC enable/disable control. IC Role / Device Role / Timing Role: First comparator triggers wake-up on load detection; second provides overload cutoff at calibrated threshold. Use Value: Ground-referenced input range matches instrumentation amplifier output; low supply current (0.8 mA typ) extends battery life in portable units. | Use Scenario: Validating +12 V, +5 V, and +3.3 V rail stability before releasing reset to CPU and chipset. IC Role / Device Role / Timing Role: Each comparator independently monitors one supply rail against precision reference; outputs feed OR-gate for global power-good signal. Use Value: Single 8-pin package replaces three discrete comparators; 36 V absolute max rating withstands transient overshoot on 12 V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903JG | Same CDIP-8 package, −40°C to +125°C temp range, 7 mV max offset (vs 9 mV for LM193JG), lower cost | Commercial/mixed-signal industrial use; not MIL-qualified; lacks full −55°C capability | Select when extended cold temperature operation is unnecessary and cost sensitivity outweighs military screening. |
| LM393DR | SOIC-8 package, 0°C to +70°C rating, 5 mV max offset, RoHS-compliant SnAgCu finish | Consumer/desktop electronics; surface-mount assembly; no hermetic sealing or radiation tolerance | Choose for high-volume PCB assembly where reflow compatibility and footprint density are prioritized over environmental ruggedness. |
Compared with LM2903JG and LM393DR, the LM193JG uniquely delivers −55°C start-up capability, MIL-PRF-38535 Class B screening, and hermetic ceramic packaging - making it irreplaceable in mission-critical aerospace, defense, and oilfield electronics where long-term reliability under thermal cycling and humidity stress is non-negotiable.
Availability
LM193JG is available at Aetrix Electronics and suitable for motor control, weigh scale, and chemical sensor applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LM193JG 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, embedded processing, and connectivity technologies, with over 90 years of innovation in high-reliability components.
The LM193JG belongs to TI's MIL-qualified comparator family, engineered specifically for defense, aerospace, and industrial systems demanding guaranteed operation from −55°C to +125°C with full parametric testing per MIL-PRF-38535.
FAQ
What is the operating temperature range of the LM193JG?
The LM193JG is rated for operation from −55°C to +125°C, as confirmed by MIL-PRF-38535 Class B qualification testing. This full military temperature range is explicitly specified in the SLIS183 datasheet Section 6.3 and applies to the LM193JG variant in CDIP-8 (JG) packaging. It exceeds the −40°C to +125°C range of the commercial LM2903JG and the 0°C to +70°C range of the LM393DR.
Does the LM193JG require a dual power supply?
No, the LM193JG operates from a single supply ranging from 2 V to 36 V. Its input common-mode range includes ground (0 V), and its open-collector outputs function correctly with only VCC and GND connections. Dual-supply operation is possible only if the difference between supplies remains within 2 V to 36 V and VCC is at least 1.5 V more positive than the input common-mode voltage - but this configuration is not required for standard use.
What is the maximum differential input voltage the LM193JG can tolerate?
The LM193JG supports a maximum differential input voltage (VID) of ±36 V, as stated in Section 6.1 Absolute Maximum Ratings of the SLIS183 datasheet. This rating applies regardless of supply voltage and allows safe operation even when one input is driven to VCC while the other is grounded - a key advantage for robust sensor interface and fault-monitoring circuits.
Can the LM193JG outputs be wire-OR'd together?
Yes, the LM193JG features open-collector outputs that are explicitly designed for wired-AND (or wire-OR in active-low logic) configurations. As described in the "Description" section and Figure 7 of the SLIS183 datasheet, connecting multiple LM193JG outputs to a shared pull-up resistor creates logical AND functionality - commonly used for power-good arbitration or multi-channel alarm consolidation without additional logic gates.
Is the LM193JG RoHS compliant?
No, the LM193JG uses SNPB (tin-lead) lead finish and is not RoHS compliant, as confirmed in the Package Option Addendum table where "RoHS" is marked "No" for all JG-packaged variants including LM193JG and LM193JG.A. This reflects its heritage as a MIL-PRF-38535-qualified part intended for high-reliability applications where leaded finishes provide superior solder joint fatigue resistance under thermal cycling.
LM193JG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.1µA @ 5V
- Current - Input Bias (Max):
- 6mA @ 5V
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1.3µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-CDIP
LM193JG FAQ
1.How can I place an order for LM193JG through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193JG 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 LM193JG reliable?
The price and inventory of LM193JG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193JG is usually 5 days.
3.What payment methods are accepted for LM193JG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193JG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193JG?
LM193JG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193JG 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 LM193JG?
For technical support, including LM193JG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193JG requirements.
6.How does Aetrix verify that LM193JG is sourced from the original manufacturer or authorized distributors?
All LM193JG 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 LM193JG meets industry standards.
7.What is the process for return or replacement of LM193JG?
All LM193JG units undergo pre-shipment inspection (PSI). If there is an issue with LM193JG, 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 LM193JG part is unused and in its original packaging.
Return procedure for LM193JG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM193JG Tags
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