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Texas Instruments LM193JGB
- Part No.:
- LM193JGB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LM193JGB.pdf
- Description:
- DUAL DIFFERENTIAL COMPARATOR 8-C
- Quantity:
- Payment:
- Shipping:
Inventory:3,944
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Product details
Overview
LM193JGB from Texas Instruments is a dual differential comparator IC designed for high-reliability military-grade applications, operating across −55°C to +125°C. It features open-collector outputs, 2 V to 36 V single/dual supply support, 2 mV typical input offset voltage, 25 nA typical input bias current, and common-mode input range extending to ground - enabling precise threshold detection in motor control, weigh scale, and sensor interface circuits.
For engineers reviewing the LM193JGB datasheet, LM193JGB pinout, LM193JGB application, or LM193JGB equivalent, key selection considerations include its MIL-PRF-38535 qualification, CDIP-8 hermetic ceramic package, −55°C to +125°C operation, open-drain output compatibility with TTL/MOS/CMOS logic, and differential input voltage tolerance up to ±36 V.
Technical Context
The LM193JGB implements two independent PNP Darlington-pair input stages, delivering high gain and low input bias current while limiting common-mode input range to 0 V to VCC − 1.5 V (−55°C to +125°C). Its open-drain NPN output stage sinks current when IN− exceeds IN+, enabling wired-AND logic and flexible level-shifting.
Supply current remains stable at 0.4 mA per comparator (typical), independent of supply voltage. Input offset voltage is specified at 2 mV (typical) and 9 mV (max over full temperature range), with differential input voltage capability matching absolute maximum supply rating (±36 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide industrial/military rails including 5 V, 12 V, 24 V, and 32 V systems without external regulation |
| Input Offset Voltage | 2 mV (typ), 9 mV (max) - enables accurate low-voltage threshold detection down to ~10 mV with margin |
| Input Bias Current | 25 nA (typ), −300 nA (min) - minimizes loading on high-impedance sensor or reference sources |
| Common-Mode Input Range | 0 V to VCC − 2 V - allows direct ground-referenced sensing and single-supply operation without level shifters |
| Differential Input Voltage | ±36 V - permits direct comparison of signals referenced to different potentials, e.g., across shunts or isolation barriers |
| Output Type | Open-collector NPN - enables wired-AND, mixed-voltage interfacing (e.g., 3.3 V MCU with 24 V load), and pull-up to any logic rail |
| Response Time | 1.3 µs (typ, 100 mV overdrive) - suitable for medium-speed control loops and fault detection in motor drives and power supplies |
Pinout & Package
Ceramic Dual In-Line Package (CDIP-8), 10.00 mm × 7.00 mm body, hermetically sealed, MIL-PRF-38535 compliant, with 0.58 mm lead pitch and 5.08 mm max height.
| 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 | High-impedance Darlington base - accepts signals from 0 V to VCC − 2 V; reverse-biased beyond −0.3 V risks latch-up |
| 1IN+ | Comparator 1 non-inverting input | High-impedance Darlington base - same voltage limits as 1IN−; enables reference or signal routing flexibility |
| GND | Ground reference | Return path for supply and inputs; common reference for both comparators and external pull-ups |
| VCC | Positive supply | Accepts 2 V–36 V; powers internal circuitry; no separate negative rail required for single-supply use |
| 2IN+ | Comparator 2 non-inverting input | Independent high-Z input - identical electrical behavior to 1IN+; supports dual-threshold or window detection |
| 2IN− | Comparator 2 inverting input | Independent high-Z input - identical electrical behavior to 1IN−; enables differential or redundant sensing |
| 2OUT | Comparator 2 output | Open-collector NPN drain - electrically isolated from 1OUT; supports independent logic loads or cascaded functions |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-38535 qualification | Tested and screened for −55°C to +125°C operation with full parameter validation - meets defense/aerospace reliability requirements |
| Single-supply operation from 2 V | Eliminates need for dual-rail supplies in battery-powered or low-voltage embedded systems - reduces BOM and layout complexity |
| Input common-mode range includes ground | Enables direct interface with ground-referenced sensors (e.g., thermistors, strain gauges) without level-shifting circuitry |
| Open-collector outputs | Permits wired-AND logic, mixed-voltage interfacing (e.g., 3.3 V MCU driving 24 V relay), and flexible pull-up selection |
| Low supply current (0.4 mA/comparator) | Reduces thermal load and power budget impact in multi-channel or always-on monitoring systems |
| Differential input voltage = ±36 V | Allows safe comparison of signals referenced to different potentials - e.g., across current-sense shunts or isolated domains |
Applications
| Motor Control: AC Induction | Weigh Scale |
|---|---|
|
Use Scenario: Detect zero-crossing or overcurrent conditions in three-phase inverter gate drivers using shunt voltage feedback. IC Role / Device Role / Timing Role: Dual comparator monitors phase currents against programmable thresholds; one channel triggers shutdown, the other enables soft-start sequencing. Use Value: Leverages ±36 V differential input to directly compare shunt voltages referenced to switching nodes, avoiding isolation amplifiers. |
Use Scenario: Convert analog bridge output from load cell into digital on/off signal for microcontroller-based weight display and limit alarms. IC Role / Device Role / Timing Role: Comparator compares amplified bridge voltage to precision reference; open-collector output interfaces directly with 3.3 V MCU GPIO. Use Value: Ground-referenced common-mode range accepts unipolar bridge output; low 2 mV offset ensures <1 g resolution in 10 kg full-scale designs. |
| Chemical or Gas Sensor | Desktop PC |
|
Use Scenario: Monitor electrochemical sensor output voltage to detect hazardous gas concentration thresholds in environmental safety modules. IC Role / Device Role / Timing Role: Compares conditioned sensor signal to adjustable reference; hysteresis added externally to prevent chatter near trip point. Use Value: 25 nA input bias current prevents loading of high-impedance sensor electrodes, preserving signal integrity and calibration stability. |
Use Scenario: Implement thermal shutdown and fan speed control by comparing analog temperature sensor output to preset thresholds. IC Role / Device Role / Timing Role: One comparator triggers CPU throttling at 85°C; second enables auxiliary cooling fan above 70°C - both share same VCC rail. Use Value: Single 5 V supply operation and 0.4 mA total quiescent current minimize impact on system power delivery network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903JG | Commercial-grade version; rated −40°C to +125°C; not MIL-PRF-38535 qualified; identical pinout and electrical specs except wider temp range tolerance | Suitable for industrial automation or telecom where extended temperature is needed but military screening is unnecessary | Select LM2903JG when cost sensitivity outweighs requirement for radiation-hardened, burn-in-tested components |
| LM393DR | SOIC-8 package; RoHS-compliant; rated 0°C to +70°C; lower input offset (2 mV typ) but higher input bias current (250 nA typ) | Appropriate for consumer electronics or prototyping where surface-mount assembly and commercial temp range suffice | Choose LM393DR for PCB space-constrained designs requiring reflow-compatible packaging and standard commercial qualification |
Compared with LM193JGB, LM2903JG offers broader industrial temperature coverage without military screening, while LM393DR provides SOIC packaging and RoHS compliance at the expense of hermetic sealing and extreme-temperature capability - making LM193JGB uniquely suited for mission-critical aerospace and defense deployments.
Availability
LM193JGB is available at Aetrix Electronics and suitable for motor control, weigh scale, chemical sensor, and desktop PC applications requiring stable component supply under extended temperature and high-reliability conditions.
Supply support for LM193JGB 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 high-reliability components for industrial, automotive, aerospace, and communications markets.
The LM193JGB belongs to TI's MIL-PRF-38535-compliant comparator family, engineered for demanding environments where extended temperature operation, hermetic packaging, and full parametric testing are mandatory.
FAQ
What is the operating temperature range of the LM193JGB?
The LM193JGB is characterized for operation from −55°C to +125°C and fully tested per MIL-PRF-38535 requirements across this range. This makes LM193JGB suitable for aerospace, defense, and downhole industrial applications where ambient extremes exceed commercial or industrial grade limits.
Does the LM193JGB support single-supply operation?
Yes, the LM193JGB supports true single-supply operation from 2 V to 36 V. Its input common-mode range includes ground (0 V), and its open-collector outputs allow pull-up to any compatible logic voltage - eliminating the need for dual supplies in most sensing and control applications involving LM193JGB.
What package type is used for the LM193JGB?
The LM193JGB uses a hermetically sealed Ceramic Dual In-Line Package (CDIP-8), designated JG, with 10.00 mm × 7.00 mm body size and 5.08 mm maximum height. This package meets MIL-STD-1835 GDIP1-T8 and is qualified for high-reliability, long-lifecycle deployments.
How does the open-collector output of the LM193JGB function?
The LM193JGB features two independent open-collector NPN outputs (1OUT and 2OUT). Each sinks current when its respective comparator's inverting input exceeds the non-inverting input by more than the offset voltage. An external pull-up resistor is required to define the logic-high voltage level - enabling LM193JGB to interface across mixed-voltage domains.
Is the LM193JGB pin-compatible with other LM193 variants?
Yes, the LM193JGB shares identical pinout and electrical functionality with all CDIP-8 packaged LM193 variants (e.g., LM193JG, LM193JGB.A). Differences lie only in screening level, marking, and lot traceability - not in connectivity or signal behavior - ensuring drop-in replacement within the same package footprint for LM193JGB.
LM193JGB 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
LM193JGB FAQ
1.How can I place an order for LM193JGB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193JGB 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 LM193JGB reliable?
The price and inventory of LM193JGB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193JGB is usually 5 days.
3.What payment methods are accepted for LM193JGB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193JGB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193JGB?
LM193JGB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193JGB 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 LM193JGB?
For technical support, including LM193JGB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193JGB requirements.
6.How does Aetrix verify that LM193JGB is sourced from the original manufacturer or authorized distributors?
All LM193JGB 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 LM193JGB meets industry standards.
7.What is the process for return or replacement of LM193JGB?
All LM193JGB units undergo pre-shipment inspection (PSI). If there is an issue with LM193JGB, 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 LM193JGB part is unused and in its original packaging.
Return procedure for LM193JGB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM193JGB Tags
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