±1

0

1

2

3

4

5

6

-0.25

0.25

0.75

1.25

1.75

2.25

Time (usec)

5mV OD

20mV OD

100mV OD

C004

±1

0

1

2

3

4

5

6

±0.25 0.00

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

Time (usec)

5mV OD

20mV OD

100mV OD

C006

LM2903-Q1

SLCS141E – MAY 2003 – REVISED JULY 2014

www.ti.com

2. When IN- is higher than common mode and IN+ is within common mode, the output is low and the output

transistor is sinking current

3. When IN+ is higher than common mode and IN- is within common mode, the output is high impedance and

the output transistor is not conducting

4. When IN- and IN+ are both higher than common mode, the output is low and the output transistor is sinking

current

9.2.2.2 Minimum Overdrive Voltage

Overdrive Voltage is the differential voltage produced between the positive and negative inputs of the comparator

comparator, with the response time decreasing with increasing overdrive. Figure 6 & Figure 7 show positive and

negative response times with respect to overdrive voltage.

9.2.2.3 Output & Drive Current

Output current is determined by the load/pull-up resistance and logic/pull-up voltage. The output current will

The output current can also effect the transient response. More will be explained in the next section.

9.2.2.4 Response Time

•

The positive response time (

•

The negative response time (

–

9.2.3 Application Curves

Figure 6. Response Time for Various Overdrives (Positive

Figure 7. Response Time for Various Overdrives (Negative

Transition)

Transition)

8

Submit Documentation Feedback

Copyright © 2003–2014, Texas Instruments Incorporated

Product Folder Links: LM2903-Q1