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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 14SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- 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
- Voltage - Input Offset (Max)：8mV @ ±15V
- Current - Input Bias (Max)：1µA @ ±15V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：12.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：14-SOIC
- Grade：-
- Qualification：-
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Overview
The LM319M is a high-speed dual analog comparator manufactured by Texas Instruments, housed in a 14-pin SOIC surface-mount package. It operates on a single supply voltage ranging from 5V to 36V or dual supplies of ±2.5V to ±18V. The device features an open-collector output capable of driving loads up to 25mA and is compatible with RTL, DTL, and TTL logic families. Key electrical parameters include a typical response time of 80ns at ±15V, a maximum input bias current of 1μA, and an input offset voltage of 8mV. It functions within a commercial temperature range of 0°C to +70°C with a maximum power dissipation of 500mW.
Feature Summary
- High-speed signal comparison with rapid response characteristics suitable for fast waveform processing.
- Open-collector output design enabling direct interfacing with various logic families and load driving capabilities.
- Wide single-supply voltage operation allowing integration into diverse digital logic systems.
Applications
- Fast A/D converter synchronization
- Level detection circuits
- Waveform generation and shaping
Procurement Notes
Verify the specific suffix (e.g., NOPB) against the datasheet to confirm lead-free compliance and RoHS status. Ensure the SOIC-14 package matches the PCB footprint requirements. Confirm the commercial temperature grade aligns with the operational environment limits.
Selection Notes
Select this component when high-speed differential comparison is required within standard digital logic voltage ranges. Consider the open-collector output requirement for external pull-up resistors. Evaluate the 80ns propagation delay against system timing constraints to ensure adequate speed for the intended application frequency.
Part Context
This part belongs to the LM119/LM219/LM319 family of precision high-speed comparators. While functionally similar, the LM319 variant is designated for commercial temperature ranges, distinguishing it from the extended industrial grades of its siblings. It serves as a general-purpose solution for applications requiring fast switching between analog input states.
Replacement Considerations
LM319MX/NOPB: Identical functional specifications with tape-and-reel packaging instead of tube.
FAQ
What is the maximum output current capability?
The open-collector outputs can sink up to 25mA, allowing direct drive of relays or indicators.
Is the input offset voltage fixed?
No, the input offset voltage varies; the maximum specification is 8mV, though typical values may be lower.
