My Inquiry
My Account
Texas Instruments LM319H/NOPB
- Part No.:
- LM319H/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-100-10 Metal Can
- Datasheet:
-
LM319H/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR TO100-10
- Quantity:
- Payment:
- Shipping:
Inventory:3,119
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM319H/NOPB from Texas Instruments is a high-speed dual comparator IC designed for precision threshold detection in industrial control and relay driver circuits. It operates from single 5-V or dual ±15-V supplies, delivers 80-ns response time at ±15 V, supports up to 25 mA output sink per channel, and features uncommitted open-collector outputs compatible with TTL/DTL/RTL logic families.
For engineers reviewing the LM319H/NOPB datasheet, LM319H/NOPB pinout, LM319H/NOPB application, or LM319H/NOPB equivalent, this page provides verified technical context, package-specific pin functions, real-world timing and drive capability data, and validated alternative options for industrial analog signal conditioning designs.
Technical Context
The LM319H/NOPB implements two independent high-gain comparators on a monolithic bipolar process, each with differential inputs and open-collector NPN output stages. Its input stage provides high common-mode slew rate and rail-to-rail input voltage range (±13 V at ±15 V supply), while the output stage allows direct interface to relays, lamps, or logic families via external pull-up.
It is specified for 0°C to +70°C operation and uses the TO-100 (LME) 10-pin metal-can package with isolated ground pins (GND1 and GND2) enabling floating or split-ground configurations. Input offset voltage is 8 mV max at 25°C, and bias current remains below 1 μA over temperature - critical for high-impedance sensor interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Response Time | 80 ns at ±15 V supply with 100-mV input step and 5-mV overdrive - enables fast edge detection in motor control feedback loops. |
| Supply Voltage Range | Single 5 V or dual ±15 V - supports direct integration into both digital logic systems and analog power rails. |
| Output Sink Current | 25 mA per channel - sufficient to directly drive electromechanical relays without external buffer transistors. |
| Input Offset Voltage | 8 mV max at 25°C - defines worst-case threshold error when comparing low-level signals like thermocouple outputs. |
| Input Bias Current | 1000 nA max at 25°C - ensures minimal loading on high-impedance sources such as photodiode amplifiers. |
| Common-Mode Input Range | ±13 V at ±15 V supply - allows valid operation even when inputs swing near supply rails, e.g., in battery monitoring. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded systems including HVAC controllers and test equipment. |
Pinout & Package
LM319H/NOPB uses the TO-100 (LME) 10-pin metal-can package (8.96 mm × 8.96 mm body, 5.72 mm max height), with hermetic sealing suitable for harsh environments. Pin 1 is identified by a dot or notch on the can top; leads are axial and solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTPUT 1) | Open-collector output of comparator 1 | Sinks up to 25 mA; requires external pull-up to define logic HIGH level and interface voltage. |
| 2 (GND 1) | Ground reference for comparator 1 | Enables isolated grounding - useful when comparator 1 monitors a separate subsystem or floating sensor. |
| 3 (INPUT 1+) | Inverting input of comparator 1 | Differential input pair; accepts voltages from –12 V to +12 V at ±15 V supply. |
| 4 (INPUT 1–) | Non-inverting input of comparator 1 | Paired with Pin 3; high-impedance node (<1 µA bias current) minimizes source loading. |
| 5 (V–) | Negative supply terminal | Accepts 0 V (for single-supply) or –15 V; sets lower rail for internal biasing and output swing. |
| 6 (OUTPUT 2) | Open-collector output of comparator 2 | Independent of OUTPUT 1; supports dual-threshold or window detection without cross-talk. |
| 7 (GND 2) | Ground reference for comparator 2 | Allows separate ground return path - critical for noise isolation in mixed-signal PCB layouts. |
| 8 (INPUT 2+) | Inverting input of comparator 2 | Functionally identical to Pin 3; supports independent signal comparison on second channel. |
| 9 (INPUT 2–) | Non-inverting input of comparator 2 | Paired with Pin 8; matched input characteristics ensure consistent performance across both comparators. |
| 10 (V+) | Positive supply terminal | Accepts 5 V (single) or +15 V (dual); powers internal circuitry and defines upper output saturation limit. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent comparators | Enables simultaneous high/low threshold detection (e.g., window comparator) without inter-channel delay or coupling. |
| Uncommitted open-collector outputs | Permits wired-OR logic, level translation, and direct relay/lamp driving - eliminates need for external interface components. |
| High common-mode slew rate | Maintains accurate comparison during fast-rising common-mode transients (e.g., motor commutation noise). |
| Isolated ground terminals (GND1/GND2) | Supports differential sensing in noisy environments by separating analog and digital ground returns per channel. |
| Low input current (≤1 µA) | Preserves signal integrity when interfacing high-output-impedance sensors like RTDs or piezoelectric elements. |
Applications
| Relay Control System | Overvoltage Protection Circuit |
|---|---|
|
Use Scenario: A programmable logic controller (PLC) module uses discrete voltage thresholds to activate 24-VDC industrial relays for motor start/stop sequencing. IC Role / Device Role / Timing Role: LM319H/NOPB acts as dual threshold detector - one comparator triggers relay ON above 22 V, the other disables it below 18 V to prevent chatter. Use Value: 80-ns response ensures rapid relay actuation during fault conditions; 25-mA sink drives relay coil directly without transistor buffer. |
Use Scenario: A DC power supply monitors output voltage and shuts down if exceeding 15.5 V to protect connected instrumentation. IC Role / Device Role / Timing Role: LM319H/NOPB compares supply output against a precision 15.5-V reference using its high-impedance inputs and open-collector output to assert shutdown signal. Use Value: Input offset voltage ≤8 mV ensures trip point accuracy within ±0.1% of reference; rail-to-rail input range accommodates full 0–16-V monitoring span. |
| Window Detector for Sensor Signal | Logic-Level Translation Interface |
|
Use Scenario: An automotive oxygen sensor signal (0.1–0.9 V) must be validated within safe operating bounds before feeding to ECU ADC. IC Role / Device Role / Timing Role: LM319H/NOPB implements a window comparator - one channel detects <0.15 V (low fault), the other >0.85 V (high fault), both outputs OR'd to flag error. Use Value: Matched input characteristics across channels minimize window asymmetry; 0°C to +70°C rating ensures reliability under hood temperature cycling. |
Use Scenario: A legacy 5-V microcontroller reads status from a 12-V industrial sensor bus requiring level-shifted logic signals. IC Role / Device Role / Timing Role: LM319H/NOPB compares sensor voltage to 6-V threshold and pulls output LOW when active, generating clean 5-V-compatible logic levels via 5-V pull-up. Use Value: Open-collector output enables seamless voltage translation; 80-ns propagation supports real-time status updates in motion control feedback paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM319M/NOPB | Same electrical specs but in SOIC-14 package; no isolated ground pins; 0°C to +70°C rating. | Lacks GND1/GND2 separation - unsuitable for floating sensor interfaces requiring ground isolation. | Select when board space is constrained and ground isolation is not required; reflow-compatible surface-mount option. |
| LM393DR | Lower speed (1.3-µs response), lower supply current (0.8 mA), no negative supply support; SOIC-8. | Cannot operate from ±15 V or drive 25 mA loads - limited to low-power, single-supply logic-level detection. | Choose only for cost-sensitive, low-speed applications where 80-ns timing and relay drive are unnecessary. |
Compared with LM319M/NOPB and LM393DR, the LM319H/NOPB uniquely combines TO-100 hermetic packaging, dual isolated grounds, ±15-V operation, and 25-mA output drive - making it irreplaceable for ruggedized dual-threshold industrial sensing where layout isolation and robust drive capability are mandatory.
Availability
LM319H/NOPB is available at Aetrix Electronics and suitable for industrial control systems, relay-based automation, overvoltage protection circuits, and sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM319H/NOPB 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 expertise in precision analog IC design and high-reliability manufacturing.
The LM319H/NOPB belongs to TI's legacy high-speed comparator product line, engineered specifically for industrial and instrumentation applications demanding fast response, robust output drive, and thermal stability in non-automotive commercial environments.
FAQ
What is the maximum output sink current specification for LM319H/NOPB?
The LM319H/NOPB is rated for 25 mA output sink current per channel at 25°C, as confirmed in Section 5.5 of the SNOSBJ2B datasheet. This allows direct driving of industrial relays and indicator lamps without external buffer transistors. Derating applies above 70°C ambient, and the absolute maximum continuous output current is limited by power dissipation (500 mW) and junction temperature (150°C).
Does LM319H/NOPB support single-supply operation?
Yes, the LM319H/NOPB supports true single-supply operation from 5 V (V+ = 5 V, V– = 0 V), with valid input voltage range of 1 V to 3 V under those conditions. Its open-collector outputs function correctly with a pull-up to the same 5-V rail, enabling compatibility with TTL and CMOS logic families in microcontroller-based systems.
What is the purpose of separate GND1 and GND2 pins on LM319H/NOPB?
GND1 and GND2 provide isolated ground return paths for comparator 1 and comparator 2, respectively. This physical separation prevents ground-loop coupling between channels - essential when one comparator monitors a noisy power rail while the other reads a sensitive sensor signal. The TO-100 package enables this architecture via dedicated internal bond wires.
Can LM319H/NOPB be used in place of LM319N/NOPB?
No - LM319H/NOPB (TO-100 metal can, 10-pin) and LM319N/NOPB (PDIP-14) have incompatible packages, pinouts, and thermal characteristics. While electrical specifications are identical, the LM319H/NOPB lacks pins for NC (1,2,13,14) and has merged ground references. PCB layout and thermal management must be redesigned; they are not drop-in replacements.
What is the input offset voltage specification for LM319H/NOPB at room temperature?
The LM319H/NOPB has a maximum input offset voltage of 8 mV at 25°C, as specified in Table 5.5 of the SNOSBJ2B datasheet for the LM319 grade. This value defines the worst-case voltage difference between inputs required to drive the output within 1 V of either supply rail under 1-mA load conditions - critical for precision threshold setting in sensor interfaces.
LM319H/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-100-10 Metal Can
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- DTL, Open-Collector, Open-Emitter, RTL, TTL
- Voltage - Supply, Single/Dual (±):
- 5V ~ 36V, ±2.5V ~ 18V
- :
- 8mV @ ±15V
- Voltage - Input Offset (Max):
- 1µA @ ±15V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 12.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- TO-100-10
LM319H/NOPB FAQ
1.How can I place an order for LM319H/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM319H/NOPB 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 LM319H/NOPB reliable?
The price and inventory of LM319H/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM319H/NOPB is usually 5 days.
3.What payment methods are accepted for LM319H/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM319H/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM319H/NOPB?
LM319H/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM319H/NOPB 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 LM319H/NOPB?
For technical support, including LM319H/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM319H/NOPB requirements.
6.How does Aetrix verify that LM319H/NOPB is sourced from the original manufacturer or authorized distributors?
All LM319H/NOPB 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 LM319H/NOPB meets industry standards.
7.What is the process for return or replacement of LM319H/NOPB?
All LM319H/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM319H/NOPB, 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 LM319H/NOPB part is unused and in its original packaging.
Return procedure for LM319H/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM319H/NOPB Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
