TLV1851中文资料德州仪器数据手册PDF规格书

1 Features

• Low supply current: 440 nA per channel

• Wide supply range: 1.8 V to 40 V

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

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

• Fail-safe inputs: high impedance inputs with no

supply

• Internal power-on-reset provides a known startup

condition

• No phase reversal for overdriven inputs

• Reverse battery protection up to 40 V

• 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, 40 Volt 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 1.8 V to 40 V 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 ensures 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 40

V 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.