LM239ADE4 datasheet(26/48 Pages) TI1

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11 Layout

11.1 Layout Guidelines

To create an accurate comparator application without hysteresis, maintain a stable power supply with minimized

noise and glitches, which can affect the high level input common-mode voltage range. To achieve this accuracy,

add a bypass capacitor between the supply voltage and ground. Place a bypass capacitor on the positive power

supply and negative supply (if available).

Note

If a negative supply is not being used, do not place a capacitor between the GND pin of the device

and system ground.

11.2 Layout Example

1OUT

1IN–

1IN+

GND

VCC

2OUT

2IN–

2IN+

0.1 F

Ground

Bypass

Capacitor

Negative Supply or Ground

Positive Supply

0.1 F

Ground

Only needed

for dual power

supplies

3IN+

3IN–

4IN+

4IN–

3OUT

4OUT

Figure 11-1. LMx39 Layout Example

LM139, LM239, LM339, LM339B, LM139A, LM239A

LM339A, LM2901B, LM2901, LM2901AV, LM2901V

SLCS006V – OCTOBER 1979 – REVISED DECEMBER 2022

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LM2901V

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