National Semiconductor part numbers

National Semiconductor (LM op amps and regulators, LMV/LMH/LMP amplifiers, LP power ICs, DS90 LVDS, DP83 Ethernet PHYs, ADC08/ADC12 converters) was acquired by Texas Instruments in 2011.

National Semiconductor is now Texas Instruments (2011). We quote National Semiconductor parts — current, obsolete and end-of-life — and parts that carry older National Semiconductor markings. See also all Texas Instruments part numbers.

5,372 National Semiconductor heritage part numbers

Part-number families from National Semiconductor, listed under their current manufacturer.

Part numberManufacturerTypePackageKey specs
LM5117QPMHENOPB Texas Instruments DC-DC Controllers HTSSOP-20-EP 200kHz, 480kHz5.5V~65V
LM5118 Texas Instruments DC-DC converter IC
LM5118MHX/NOPB Texas Instruments DC-DC Converters TSSOP-20-EP 200kHz, 515kHz3A
LM5118-Q1 Texas Instruments DC-DC converter IC
LM5119 Texas Instruments DC-DC converter IC
LM5119Q Texas Instruments DC-DC converter IC
LM5121 Texas Instruments DC-DC converter IC
LM5121-Q1 Texas Instruments DC-DC converter IC
LM5122 Texas Instruments DC-DC converter IC
LM5122MHE/NOPB Texas Instruments DC-DC Converters HTSSOP-20-EP 450kHz, 875kHz3A
LM5122MHX/NOPB Texas Instruments DC-DC Converters HTSSOP-20-EP 450kHz, 875kHz100V
LM5122-Q1 Texas Instruments DC-DC converter IC
LM5122QMHX/NOPB Texas Instruments DC-DC Converters TSSOP-20-EP 1MHz4.5V~65V
LM5122ZA Texas Instruments DC-DC converter IC
LM51231-Q1 Texas Instruments DC-DC converter IC
LM5123-Q1 Texas Instruments DC-DC converter IC
LM51251A-Q1 Texas Instruments DC-DC converter IC
LM5125A-Q1 Texas Instruments DC-DC converter IC
LM5125-Q1 Texas Instruments DC-DC converter IC
LM51261A-Q1 Texas Instruments DC-DC converter IC
LM5126A-Q1 Texas Instruments DC-DC converter IC
LM5127-Q1 Texas Instruments DC-DC converter IC
LM5134 Texas Instruments DC-DC converter IC
LM5137 Texas Instruments DC-DC converter IC
LM5137F Texas Instruments DC-DC converter IC
LM5137F-Q1 Texas Instruments DC-DC converter IC
LM5137-Q1 Texas Instruments DC-DC converter IC
LM5140-Q1 Texas Instruments DC-DC converter IC
LM5140QRWGTQ1 Texas Instruments DC-DC Controllers VQFN-40-EP(6x6) 440kHz1.5V~15V
LM5141 Texas Instruments DC-DC converter IC
LM5141-Q1 Texas Instruments DC-DC converter IC
LM5141QRGETQ1 Texas Instruments DC-DC Converters VQFN-24(4x4) 2.2MHz5V, 3.3V, 1.5V~15V
LM5143 Texas Instruments DC-DC converter IC
LM5143A-Q1 Texas Instruments DC-DC converter IC
LM5143-Q1 Texas Instruments DC-DC converter IC
LM5145 Texas Instruments DC-DC converter IC
LM5145-Q1 Texas Instruments DC-DC converter IC
LM5145RGYR Texas Instruments DC-DC Converters VQFN-20-EP(3.5x4.5) 1MHz800mV~60V
LM5146 Texas Instruments DC-DC converter IC
LM5146-Q1 Texas Instruments DC-DC converter IC
LM5148 Texas Instruments DC-DC converter IC
LM5148-Q1 Texas Instruments DC-DC converter IC
LM5148RGYR Texas Instruments DC-DC Converters VQFN-24(5.5x3.5) 2.2MHz800mV~55V
LM5149 Texas Instruments DC-DC converter IC
LM5149-Q1 Texas Instruments DC-DC converter IC
LM51501-Q1 Texas Instruments DC-DC converter IC
LM51501QWRUMRQ1 Texas Instruments DC-DC Converters WQFN-16(4x4) 2.3MHz1.5V~42V
LM5150-Q1 Texas Instruments DC-DC converter IC
LM5150QWRUMRQ1 Texas Instruments DC-DC Converters WQFN-16(4x4) 2.3MHz1.5V~42V
LM51521-Q1 Texas Instruments DC-DC converter IC
LM5152-Q1 Texas Instruments DC-DC converter IC
LM5155 Texas Instruments DC-DC converter IC
LM51551 Texas Instruments DC-DC converter IC
LM51551DSSR Texas Instruments DC-DC Converters WSON-12(2x3) 2.2MHz2.97V~45V
LM51551-Q1 Texas Instruments DC-DC converter IC
LM5155DSSR Texas Instruments DC-DC Converters WSON-12-EP(2x3) 2.2MHz1.5A
LM5155-Q1 Texas Instruments DC-DC converter IC
LM5156 Texas Instruments DC-DC converter IC
LM51561 Texas Instruments DC-DC converter IC
LM51561H Texas Instruments DC-DC converter IC

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Frequently asked questions

Is National Semiconductor still in business?

National Semiconductor (LM op amps and regulators, LMV/LMH/LMP amplifiers, LP power ICs, DS90 LVDS, DP83 Ethernet PHYs, ADC08/ADC12 converters) was acquired by Texas Instruments in 2011.

Can I still buy National Semiconductor parts?

Yes. PartnerSemi quotes National Semiconductor part numbers, including obsolete and end-of-life parts and parts with old National Semiconductor markings. Send the part number and quantity; we reply with price, lead time, date code and origin. We are an independent distributor, not an authorized National Semiconductor or Texas Instruments distributor.

PartnerSemi is not affiliated with National Semiconductor or Texas Instruments. Brand names are used to identify parts only.