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Texas Instruments TS321ID — Logic ICs

ST TS321ID Op Amp, 800 kHz GBW, 8-SOIC, Active

MPNTS321ID
End of Life

ST TS321ID, General Purpose Op-Amp, 1 Circuit, 800 kHz GBW, 0.4 V/µs Slew Rate, 3 V to 30 V Supply, 8-SOIC Package, -40°C to 125°C.

$1.02Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
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Specifications

TS321ID Technical Specifications
ParameterValue
Mounting typeSurface Mount
Amplifier typeGeneral Purpose
Voltage - input offset500 µV
Voltage - supply span30 V
Current - supply600µA
Current - input bias20 nA
Current - output (Channel)40 mA
Operating temperature-40°C ~ 125°C
Gain bandwidth product800 kHz
PackageTube
Slew rate0.4V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

It delivers an 800 kHz gain-bandwidth product and a 0.4 V/µs slew rate, drawing 600 µA typical supply current. The 3 V to 30 V supply span lets it run from a 5 V logic rail or a 24 V industrial bus without an extra regulator.

The 800 kHz gain-bandwidth product sets the usable small-signal frequency range. For a closed-loop gain of 10, the -3 dB bandwidth drops to about 80 kHz — fine for audio, low-frequency sensor amplification, or active filtering below 100 kHz. The 0.4 V/µs slew rate limits large-signal response: a 10 V peak-to-peak output swing slews in about 25 µs, so this part is not suited for fast ADC drivers or high-speed comparator applications. The 20 nA input bias current and 500 µV input offset voltage are typical for a general-purpose bipolar stage, adequate for non-critical DC accuracy in temperature monitoring or current-sense post-amplification.

The TS321ID operates from a single supply as low as 3 V or as high as 30 V, and can also run on dual supplies (±1.5 V to ±15 V). The 40 mA output current per channel can drive moderate loads like a headphone amplifier, an analog meter, or the input of a downstream ADC. The 8-SOIC footprint is a standard industry package — the same land pattern as an LM358 or MCP6001 in SOIC-8, so it drops into existing layouts with no board change.

Lifecycle and sourcing

The active lifecycle means no supply-chain urgency for new designs, though the standard 8-SOIC package and single-channel count make it a straightforward drop-in for any general-purpose op-amp socket.

Frequently asked questions

What is the TS321ID equivalent or recommended replacement?

No direct pin-compatible replacement is listed by STMicroelectronics. For a higher-speed alternative, the TLV9351IDCKR offers 3.5 MHz GBW and 20 V/µs slew rate in a similar SOT-23 package, but verify the pinout and supply range (4.5 V minimum) against your design. The TS321ID remains the active, standard choice for general-purpose single-supply applications up to 30 V.

Does TS321ID support single supply operation?

The input common-mode range includes the negative rail, making it suitable for single-supply circuits like low-side current sensing or battery monitoring.