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Product Detailed Parameters
- Description：IC COMPARATOR 4 GEN PUR 16QFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：4
- Output Type：CMOS, DTL, ECL, MOS, Open-Collector, TTL
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：16-VFQFN Exposed Pad
- Mounting Type：Surface Mount
- Supplier Device Package：16-QFN (3x3)
- Grade：-
- Qualification：-
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Overview
The LM339QT is a low-power quad voltage comparator manufactured by STMicroelectronics. It features four independent comparators designed for single-supply operation over a wide voltage range of 2V to 36V, or dual supplies of ±1V to ±18V. The device offers a typical propagation delay of 300ns and a maximum input offset voltage of 250mV. It draws a typical supply current of 1.1mA with an input bias current of 25nA. The output stage supports open-collector configurations compatible with various logic families including CMOS, TTL, ECL, DTL, and MOS. It is housed in a 16-pin VFQFPN package.
Feature Summary
- Low power consumption with supply current independent of voltage
- Wide single or dual supply voltage capability
- Input common mode range includes ground potential
- Output saturation voltage remains low under load
Applications
- Automotive electronic systems
- Advanced Driver Assistance Systems (ADAS)
- General purpose analog signal processing
Procurement Notes
Verify the specific suffix 'QT' corresponds to the required 16-pin VFQFPN package and RoHS compliance status. Confirm that the open-collector output configuration aligns with the target circuit's pull-up requirements. Ensure the operating temperature range meets the application's environmental specifications before finalizing procurement orders.
Selection Notes
Select this component when low quiescent current is critical alongside wide supply voltage flexibility. The quad configuration reduces board space compared to discrete solutions. Verify that the 300ns propagation delay satisfies the system's timing constraints. Ensure the open-drain/open-collector output interface matches the downstream logic level requirements.
Part Context
This part belongs to the LM339 series of low-power quad comparators. It shares functional similarities with other variants like LM339D or LM339N but differs in packaging. The QT designation specifically indicates the 16-lead Very Thin Quad Flat No-Lead package, distinguishing it from SOIC or DIP alternatives within the same electrical family.
Replacement Considerations
Direct substitutes include LM339DT, LM339PT, and LM339ADT. These alternatives share identical electrical characteristics but utilize different packages such as SOIC or TSSOP. Verify pinout compatibility and thermal performance when swapping between package types.
