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Product Detailed Parameters
- Description：HIGH SPEED DUAL COMPARATOR 20-LC
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector, DTL, RTL, TTL
- Voltage - Supply, Single/Dual (±)：36V
- Voltage - Input Offset (Max)：4mV @ ±15V
- Current - Input Bias (Max)：0.5µA @ ±15V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：4.5mA, 11.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：20-CLCC
- Mounting Type：Surface Mount
- Supplier Device Package：20-LCCC (8.89x8.89)
- Grade：-
- Qualification：-
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Overview
The LM119E-SMD is a high-speed dual comparator manufactured by Texas Instruments, designed for precision applications requiring fast response times. It operates over a wide supply voltage range, supporting single 5V logic supplies or dual supplies up to ±15V. The device features an uncommitted open-collector output stage capable of driving loads such as lamps and relays with currents up to 25 mA. It offers low input bias current and high gain, making it suitable for interfacing with various logic families including RTL, DTL, and TTL.
Feature Summary
- High-speed operation with typically 80 ns response time at ±15V supply
- Wide operating voltage range from single 5V logic supply to ±15V
- Uncommitted collector output compatible with multiple logic families
- Low input bias current and high common-mode slew rate
Applications
- Relay driver circuits
- Window detector configurations
- Digital logic interface applications
- Lamp and relay load driving
Procurement Notes
Verify the specific radiation qualification (e.g., High Dose Rate vs. ELDRS Free) required for your application, as electrical characteristics and post-radiation limits vary between these versions. Confirm that the LCCC package type matches your board layout requirements. Ensure handling procedures account for limited built-in ESD protection during storage and assembly.
Selection Notes
Select this component when high speed and wide voltage flexibility are critical. Compare against the LM111 if faster response is needed, noting the trade-off in power dissipation. Consider the LM710 if lower input current is prioritized over speed. Verify that the open-collector output architecture fits your system's pull-up requirements and logic levels.
Part Context
This part belongs to the LM119 family of high-speed dual comparators. It is available in various packages including LCCC, CDIP, TO-100, and CFP. The SMD designation indicates surface-mount compatibility within ceramic packages. Variants exist with different radiation hardening specifications for military and space environments.
Replacement Considerations
LM319AM-NOPB: Pin-compatible alternative with similar performance but commercial grade. LM319MX: Surface mount version of the LM319. PC319: High-speed dual comparator from Renesas. EL5281: Dual 8ns high-speed comparator from Intersil.
