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LM339A-TR
+Lista de MateriaisGENERAL PURPOSE COMPARATOR, OPEN
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Especificações
| Atributo | Valor |
| Part Status | Active |
| Type | Differential |
| Number of Elements | 4 |
| Output Type | Open-Collector, CMOS, TTL |
| Voltage - Supply, Single / Dual (±) | 2.5V ~ 36V, ±1.25V ~ 18V |
| Voltage - Input Offset (Max) | 6mV @ 5V |
| Current - Input Bias (Max) | 0.001µA @ 5V |
| Current - Quiescent (Max) | 300µA |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Supplier Device Package | 14-TSSOP |
Visão Geral
Description
Key features of the LM339A-TR include low power consumption, open collector outputs that allow for wired AND connections, and the ability to operate with a single or dual power supply. The comparators are designed to provide a common-mode input voltage range that includes ground, making them ideal for use in ground-sensing applications.
Typical applications include zero-crossing detectors, voltage level shifters, and pulse generators. The LM339A-TR is often used in consumer electronics, automotive, and industrial control systems due to its reliability and performance. With its ability to operate in a wide temperature range, it is a robust choice for many design needs.
Equivalent
1. LM339N
2. LM339D
3. LM239 (military-grade)
4. MC3302 (Motorola)
5. UA339 (Texas Instruments)
6. LM2901 (low-power variant)
7. TLV1704 (TI, with higher precision)
These chips offer similar functionality with possible variations in packaging and electrical specifications but are used interchangeably in applications requiring voltage comparison.
Features
Pinout
1. VCC (Pin 3): Positive supply voltage.
2. GND (Pin 12): Ground connection.
3. Inputs (Pins 4, 5, 6, 7, 9, 10, 11, 13): These pins serve as the inverting and non-inverting inputs for the four comparators (two inputs per comparator).
4. Outputs (Pins 1, 2, 14, 8): Each output corresponds to one of the comparators.
The main function of the LM339A-TR is to compare input voltages and provide a digital output based on the comparison. If the non-inverting input voltage is greater than the inverting input voltage, the output is high; otherwise, it is low. The device is versatile, used in applications like oscillators, voltage level shifters, and function generators.