LF156: vs LM741H

Mike Woodard

Part Number: LF156

Hi,

1) I have been comparing the LF156H against the LM741H and it looks to be a drop-in replacement for the LM741H and be extension the AD741SH. The LF156H parameters seem to be a closer match to the AD741SH than do the LM741H, am I missing something?

2) The LF156H is currently available on the Mouser website so is there anything you can tell me about the life expectancy of the LF156H?

3) When prompted to select a part number both the LF156QML and LF156JAN were options, are they not both mil qualified parts?

4) The recommended conditions shown is section 6.3 of the LF156 datasheet sets the minimum recommended operating voltage at +/-15V. In my circuit the opamp will be running on +/-12V. the output voltage of the opamp will swing between -1V and +6V. The operating temperature for the unit the opamp will be installed in is -40C to +90C and the minimum load the opamp will see is 2,000 ohms. I have have looked at the charts provided on the datasheet and do not see any issues operating at +/-12V, am I right? Do you see any issues operating the LF156 on +/-12V.

over 2 years ago

0 Gerasimos Madalvanos over 2 years ago

TI__Mastermind 33723 points

Hey Mike,

The differences are between the devices are that the LM156H is a military temperature grade device. LF156QML and LF156JAN conform to QML and JAN specs respectively. The JAN device will conform to MIL-I-38510, and the QML device will conform to MIL-PRF-38535. I've provided a comparison table of many common parameters for these devices.

Here is TI's statement on product life cycles for active devices:https://www.ti.com/support-quality/quality-policies-procedures/product-life-cycle.html

The device will work at +/-12V, however the datasheet specifications are for the device operating at the following conditions. These specs may change from the datasheet based upon supply voltage.