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Product Detailed Parameters
- Description：IC COMPARATOR 4 GEN PUR 14SO
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：4
- Output Type：-
- Voltage - Supply, Single/Dual (±)：2V ~ 32V, ±1V ~ 16V
- Voltage - Input Offset (Max)：2mV @ 30V
- Current - Input Bias (Max)：0.1µA @ 5V
- Current - Output (Typ)：16mA @ 5V
- Current - Quiescent (Max)：2mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：14-SO
- Grade：-
- Qualification：-
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Overview
The LM139ADT is a low-power quad voltage comparator manufactured by STMicroelectronics. It features four independent precision comparators in a 14-SOIC package. The device operates from a single power supply ranging from +2V to +36V or dual supplies of ±1V to ±18V. Key electrical characteristics include a maximum input offset voltage of 5mV at 30V, typical input bias current of 25nA, and maximum static supply current of 2mA. The output saturation voltage is typically 250mV with a sink current of 4mA. It supports TTL, DTL, ECL, MOS, and CMOS compatible outputs.
Feature Summary
- Four independent precision-voltage comparators designed for wide single-supply operation
- Input common-mode voltage range includes ground potential
- Outputs are compatible with various logic families including TTL, DTL, ECL, MOS, and CMOS
- Low supply current that remains independent of the supply voltage level
Applications
- Precision voltage monitoring circuits
- Level shifting applications
- Temperature sensing systems using thermistors
- Watchdog timer circuits
Procurement Notes
Verify the specific suffix 'ADT' corresponds to the 14-SOIC surface-mount package and industrial temperature range (-55°C to 125°C). Confirm RoHS compliance status as specified in the official datasheet. Ensure ordering quantities align with manufacturer standard packaging requirements for the SOIC variant.
Selection Notes
Select this component when multiple independent comparators are required within a single integrated circuit. It is suitable for designs needing ground-referenced input signals while operating from a single positive supply rail. Consider the open-collector output structure which requires external pull-up resistors for proper logic level interfacing.
Part Context
The LM139ADT belongs to the LM139/LM239/LM339 family of low-power quad comparators. This series is widely used in general-purpose analog signal processing where low power consumption and wide supply voltage flexibility are critical design constraints. The ADT suffix specifically denotes the plastic small-outline package configuration.
Replacement Considerations
LM239DT: Military grade equivalent with extended temperature specifications. LM339DT: Commercial grade version with potentially different offset voltage tolerances. LM393ADT: Dual-channel alternative offering half the comparator count in an 8-pin package.
