SNOAA35E December 2023 – June 2024 LM2901 , LM2901B , LM2901B-Q1 , LM2903 , LM2903-Q1 , LM2903B , LM2903B-Q1 , LM339 , LM339-N , LM393 , LM393-N , LM393B , LM397 , TL331 , TL331-Q1 , TL331B
In late 2019, TI introduced a new, updated B design based on a new high-voltage junction-isolated process to replace the classic LM339 design that has existed since the early 1970's. This update allowed for improvements in many specifications and smaller package options.
The new B devices were designed to have equal to, or better-than, performance than the classic devices so that the new devices can easily drop-in replace the classic devices. The front page of the B data sheets contains a convenient table showing the differences in specifications between the various classic devices and the new B device. An example a comparison table is shown in Table 2-1.
Specification | LM393B | LM2903B | LM393 LM393A | LM2903 | LM2903V LM2903AV | LM193 | LM293 LM293A | Units |
---|---|---|---|---|---|---|---|---|
Supply Voltage | 2 to 36 | 2 to 36 | 2 to 30 | 2 to 30 | 2 to 32 | 2 to 30 | 2 to 30 | V |
Total Supply Current (5V to 36V max) | 0.6 to 0.8 | 0.6 to 0.8 | 1 to 2.5 | 1 to 2.5 | 1 to 2.5 | 1 to 2.5 | 1 to 2.5 | mA |
Temperature Range | −40 to 85 | −40 to 125 | 0 to 70 | −40 to 125 | −40 to 125 | −55 to 125 | −25 to 85 | °C |
ESD (HBM) | 2000 | 2000 | 1000 | 1000 | 1000 | 1000 | 1000 | V |
Offset Voltage (Max over temp) | ± 4 | ± 4 | ± 9 ± 4 | ± 15 | ± 15 ± 4 | ± 9 | ± 9 ± 4 | mV |
Input Bias Current (typ / max) | 3.5 / 25 | 3.5 / 25 | 25 / 250 | 25 / 250 | 25 / 250 | 25 / 100 | 25 / 250 | nA |
Response Time (typ) | 1 | 1 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | µsec |
As shown in the Table 2-1 example, improvements in the B devices can be seen in wider supply voltage range, lower offset voltage, much lower bias current, faster propagation delay and lower supply current. Similar improvements were made to the Single TL331B and Quad LM339B/2901B.