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Texas Instruments LF198AH/NOPB — Memory (DRAM / SRAM / Flash / EEPROM)

LF198AH/NOPB Sample and Hold IC, TO-99-8, -55°C to 125°C

MPNLF198AH/NOPB
End of Life

Texas Instruments LF198AH/NOPB sample and hold amplifier, single circuit, 4.5 mA supply, 10 V to 36 V supply range, through-hole TO-99-8 metal can package, -55°C to 125°C operating temperature.

$20.75Ref. price · indicative, final on quote
Texas Instruments LF198AH/NOPB datasheet (PDF)
PackagingTO-99-8 Metal Can
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LF198AH/NOPB specifications
ParameterValue
MountingThrough Hole
Amplifier typeSample and Hold
Voltage - input offset1 mV
Voltage - supply span36 V
Current - supply4.5mA
Current - input bias5 nA
Operating temperature-55°C ~ 125°C
PackageBulk
CaseTO-99-8 Metal Can
Number of circuits1

Product details

The Texas Instruments LF198AH/NOPB is a monolithic sample-and-hold amplifier in a TO-99-8 metal can package. It holds the sampled voltage on an external capacitor with 1 mV input offset and 5 nA input bias current, drawing 4.5 mA from a supply rail between 10 V and 36 V.

Package and mounting — through-hole reality

The TO-99-8 metal can is a through-hole package. It plugs into a standard 8-pin round socket or solders directly into plated through-holes. The metal can provides inherent shielding, useful in noisy environments. No surface-mount variant exists for this part — a retrofit to a modern SMD board requires a through-hole-to-SMD adapter or a different sample-and-hold family.

Frequently asked questions

Is LF198AH/NOPB obsolete?

No, the LF198AH/NOPB is listed as Active. No discontinuation notice or last-time-buy has been issued.

What is the pinout of LF198AH/NOPB?

The LF198AH/NOPB uses the standard TO-99-8 pinout. Pin 1 is offset null, pin 2 is inverting input, pin 3 is non-inverting input, pin 4 is V–, pin 5 is offset null, pin 6 is output, pin 7 is V+, pin 8 is logic reference. Confirm the exact pin functions against the datasheet for your hold capacitor and logic connections.

What is the difference between LF198AH/NOPB and LF398?

The LF398 is a later, improved sample-and-hold with lower input offset and faster acquisition for the same TO-99 footprint. The LF198AH/NOPB carries the full -55°C to 125°C military temperature range; the LF398 typically covers the industrial range. Check the specific temperature grade of the LF398 variant you are comparing.