TLV1854中文資料德州儀器數據手冊PDF規(guī)格書

1 Features

? Low supply current: 440nA per channel

? Wide supply range: 1.8V to 40V

? Over-the-rail inputs: common-mode range extends

40V above (V-) independent of (V+)

? Fail-safe: high impedance inputs with no supply

? Power-on-reset provides a known startup condition

? No phase reversal for overdriven inputs

? Reverse battery protection up to 40V

? Push-pull output option (TLV185x)

? Open-drain output option (TLV186x)

? Temperature range: -40°C to +125°C

2 Applications

? Mobile phones & tablets

? Headsets/headphones & earbuds

? PC & notebooks

? Gas detector

? Smoke & heat detector

? Motion Detector

? Gas meter

? Servo drive position sensor

3 Description

The TLV185x and TLV186x are a family of

nanopower, 40V comparators with single, dual and

quad channel options. The family offers fail-safe (FS)

inputs with push-pull and open-drain output options.

These features coupled with nanopower operation

over the wide supply range of 1.8V to 40V make this

family well-suited for house-keeping functions such

as voltage and temperature monitoring in low-power,

always-on systems.

All devices include a Power-On Reset (POR) feature

that makes sure that the output is in a known

state until the minimum supply voltage has been

reached before the output responds to the inputs, thus

preventing false outputs during system power-up and

power-down.

The inputs have over-the-rail capability where both

inputs can exceed the supply voltage up to 40V and

still operate properly. This makes the comparators

well suited for both high and low supply voltage

systems without limiting the range of input voltages

that can be compared. Likewise, the internal

reverse battery protection feature prevents damage

to the comparator in the event of improper battery

installation to the supply pins.

The TLV185x comparators have a push-pull output

stage where as the TLV186x comparators have an

open-drain output stage, making it appropriate for

level translation.