SNOAA35D April 2023 – December 2023 LM2901 , LM2901B , LM2901B-Q1 , LM2903 , LM2903-Q1 , LM2903B , LM2903B-Q1 , LM339 , LM339-N , LM393 , LM393-N , LM393B , LM397 , TL331 , TL331-Q1 , TL331B
For the new B devices, to improve propagation delay and output drive capability, an additional gain stage consisting of Q13 and Q14 was added to the classic LM339 design.
While this additional stage did improve the specifications, the extra stage does add an inversion to the signal path (note that the inputs are now reversed). One effect of this inversion was that Section 3.7.1 behavior is inverted, causing the B devices output go high.
Dedicated ESD protection structures were also added for more robust ESD performance.