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Texas Instruments LMH6645MF/NOPB — Analog & Data Acquisition

TI LMH6645MF/NOPB Voltage Feedback Op-Amp, 55 MHz, SOT-23-5

MPNLMH6645MF/NOPB
End of Life

Texas Instruments VIP10™ series, LMH6645MF/NOPB voltage feedback op-amp, single circuit, 55 MHz -3dB bandwidth, 22 V/µs slew rate, rail-to-rail output, 2.5 V to 12 V supply, 725 µA supply current, SOT-23-5 package, -40°C to 85°C.

$3.06Ref. price · indicative, final on quote
Texas Instruments LMH6645MF/NOPB datasheet (PDF)
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
SeriesVIP10™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LMH6645MF/NOPB specifications
ParameterValue
SeriesVIP10™
Output typePush-Pull, Rail-to-Rail
MountingSurface Mount
Amplifier typeVoltage Feedback
Voltage - input offset1 mV
Voltage - supply span2.5 V
Current - supply725µA
Current - input bias650 nA
Current - output (Channel)20 mA
Operating temperature-40°C ~ 85°C
-3db bandwidth55 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate22V/µs
CaseSC-74A, SOT-753
Number of circuits1

Product details

The Texas Instruments LMH6645MF/NOPB is a single voltage-feedback op-amp from the VIP10™ series, packing a 55 MHz -3dB bandwidth and a 22 V/µs slew rate into a SOT-23-5 package. The rail-to-rail output swing means you keep the full dynamic range when driving an ADC input or a low-voltage signal path. Typical applications include sensor amplifiers, active filters, and ADC buffer stages in industrial control, test equipment, and portable instrumentation where the ambient temperature stays within -40°C to 85°C.

The 55 MHz -3dB bandwidth and 22 V/µs slew rate define the small-signal and large-signal speed.

Frequently asked questions

Is LMH6645MF/NOPB obsolete or end of life?

No — the part is Active with no end-of-life notice or last-time-buy window.

What is the difference between LMH6645 and LMH6646?

The LMH6645 is a single op-amp; the LMH6646 is a dual op-amp. Both share the same VIP10™ series core specs (55 MHz bandwidth, 22 V/µs slew rate, rail-to-rail output, 725 µA per channel supply). The pinout differs because the LMH6646 has two channels.

Can LMH6645MF/NOPB be used as a comparator?

It is a voltage-feedback op-amp, not a comparator. While it can be pressed into comparator service at low speed, the output stage is not designed for open-loop saturation recovery — expect longer propagation delay and possible phase reversal. A dedicated comparator like the TLV3501 is a better choice for that role.

What is the exact pinout of LMH6645MF/NOPB?

The SOT-23-5 (SC-74A) pinout is standard: pin 1 = output, pin 2 = V-, pin 3 = non-inverting input, pin 4 = inverting input, pin 5 = V+. Confirm the orientation against the datasheet before layout.

Where can I buy LMH6645MF/NOPB available via RFQ confirmation?

We source this part to order; availability and pricing are confirmed at quote time.