TS914IN - 4-Channel Rail-to-Rail Op Amp | STMicroelectronics
MPN: TS914IN ✗ End of LifeTS914IN Overview
A CMOS operational amplifier is a voltage-controlled, high-gain analog signal-processing component used for buffering, amplification, sensing, filtering, and feedback control. The TS914IN belongs to the operational amplifier hierarchy within analog integrated circuits, where its rail-to-rail input and output capability makes it suitable for systems whose signal levels approach the available supply rails.
Key features include four amplifier circuits, rail-to-rail input and output operation, support for single or dual power supplies, very low 1 pA typical input bias current, and low input offset voltage no greater than 2 mV. According to the STMicroelectronics manufacturer datasheet, the device is intended for applications operating from a single supply or from dual supplies up to 16 V.
The low input bias current is especially useful when the amplifier is connected to high-impedance sensors, because the amplifier contributes minimal loading to the source. Rail-to-rail behavior also broadens the usable input and output range in low-voltage systems. The trade-off is that the 14-pin DIP package is larger than modern surface-mount packages, making TS914IN more appropriate for through-hole, legacy, industrial, and prototyping assemblies.
Typical uses include battery-powered instrumentation, sensor interfaces, low-voltage signal conditioning, sample-and-hold circuits, active filters, and general-purpose analog control systems. Its four independent channels can reduce the number of packages required when a board needs several similar low-power amplifier functions.
When designing around TS914IN, verify input and output common-mode limits, output-current capability, operating-temperature limits, and stability requirements against the manufacturer datasheet for the exact operating conditions. Input bias, offset, and supply currents should be checked with the source impedance and signal bandwidth, particularly in high-impedance precision measurements.
This page consolidates verified manufacturer and distributor information, package and pin details, replacement constraints, comparison data, and application-specific engineering guidance. It distinguishes confirmed specifications from unavailable values so engineers can make sourcing and PCB-retention decisions without relying on unsupported assumptions.
Drop-in alternatives for TS914IN — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
TS914AID
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TS914CD
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TS914AI
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TS3V914IN
✅ Drop-In📋 Reference alternative (not in catalog)
TS914IN Maximum Ratings & Electrical Characteristics
| Amplifier Type | Rail-to-rail CMOS operational amplifier |
| Number of Channels | 4 circuits |
| Supply Configuration | Single or dual supply |
| Minimum Supply Voltage | 3 V |
| Maximum Supply Voltage | 16 V |
| Input Bias Current | 1 pA typical |
| Input Offset Voltage | 2 mV maximum |
| Input Common-Mode Range | Rail-to-rail |
| Output Common-Mode Range | Rail-to-rail |
| Package | 14-pin DIP |
| Pin Count | 14 pins |
| Mounting Type | Through-hole |
| Process Technology | CMOS |
| RoHS Status | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
TS914IN Pin Configuration
| Pin 1 | OUT1 — Amplifier 1 output |
| Pin 2 | -IN1 — Amplifier 1 inverting input |
| Pin 3 | +IN1 — Amplifier 1 non-inverting input |
| Pin 4 | V- — Negative supply connection |
| Pin 5 | +IN2 — Amplifier 2 non-inverting input |
| Pin 6 | -IN2 — Amplifier 2 inverting input |
| Pin 7 | OUT2 — Amplifier 2 output |
| Pin 8 | OUT3 — Amplifier 3 output |
| Pin 9 | -IN3 — Amplifier 3 inverting input |
| Pin 10 | +IN3 — Amplifier 3 non-inverting input |
| Pin 11 | V+ — Positive supply connection |
| Pin 12 | -IN4 — Amplifier 4 inverting input |
| Pin 13 | +IN4 — Amplifier 4 non-inverting input |
| Pin 14 | OUT4 — Amplifier 4 output |
Typical Applications
TS914IN is suitable for 6 applications: High-Impedance Sensor Signal Conditioning, Battery-Powered Portable Instrumentation, Active Filters and Signal Conditioning, Industrial Control and Measurement Systems, Audio and Low-Level Amplification, Legacy Through-Hole Control Boards.
High-Impedance Sensor Signal Conditioning
The TS914IN fits high-impedance sensor interfaces because its verified input bias current is only 1 pA typical, reducing the loading introduced by the amplifier input. It can buffer sensor outputs before an ADC or measurement stage while operating from a supply as low as 3 V. Rail-to-rail inputs and outputs also help preserve signal range in low-voltage systems. The principal engineering consideration is that the 2 mV maximum input offset can be significant for very small sensor signals, so source resistance, gain, offset calibration, bandwidth, and output-noise requirements should be evaluated before finalizing the front end.
Recommended
Battery-Powered Portable Instrumentation
The TS914IN is useful in battery-powered portable instrumentation because it accepts single or dual supplies and operates from 3 V to 16 V. Four amplifiers in one 14-pin DIP can provide multiple buffered channels without requiring four separate packages. Low input bias current helps preserve weak sensor signals, while rail-to-rail operation is advantageous when the internal signal range is close to the supply voltage. Before release, verify the device's quiescent current and output-current capability from the manufacturer datasheet, because those values were not present in the supplied source excerpts and directly affect battery life and load capability.
Recommended
Active Filters and Signal Conditioning
The TS914IN can implement active low-pass, high-pass, and band-pass filters when four similar analog channels are required. Its four CMOS amplifier circuits support independent stages within one 14-pin DIP package, while the 1 pA typical input bias current is advantageous when the filter is driven by a high-impedance source. Rail-to-rail inputs and outputs help retain useful signal swing in 3 V systems. Designers must confirm gain-bandwidth product, slew rate, output loading, and stability for the selected feedback network because those parameters are not included in the verified search excerpts.
Recommended
Industrial Control and Measurement Systems
The TS914IN is applicable to industrial control and measurement systems that need several general-purpose amplifier channels in a through-hole design. It can buffer transducers, amplify control-loop errors, or provide gain around comparators and sensors, with a verified 3 V minimum supply and 16 V maximum supply. The 1 pA typical input bias current reduces errors with resistive sensors, while four channels can lower board component count. Industrial suitability must be based on the verified operating-temperature grade, noise, offset drift, and stability; these ratings were not supplied and must be checked before deployment in a qualified system.
Recommended
Audio and Low-Level Amplification
The TS914IN can provide low-level voltage amplification and buffering in audio, microphone, and communications equipment when the design requires four rail-to-rail CMOS channels. The very low 1 pA typical input bias current is useful with high-impedance sources, and the 3 V operating limit supports modern low-voltage audio systems. However, audio applications may require lower noise and a defined gain-bandwidth response than the supplied excerpts establish. Designers should compare the manufacturer noise-density, slew-rate, output-swing, and distortion data with established audio amplifiers such as NE5534DR before choosing a gain network.
Recommended
Legacy Through-Hole Control Boards
The TS914IN is well suited to repairing or maintaining legacy through-hole control boards because it provides four operational-amplifier channels in a standard 14-pin DIP package. The footprint-based selection is useful where new surface-mount packages would require board redesign, although exact pin functions and circuit polarity should still be checked before substitution. Rail-to-rail behavior can improve operation in older 5 V or 12 V analog sections, while the 1 pA typical bias current helps when interfacing with high-impedance transducers. For long-life production, engineers should consider current lifecycle status and source a documented drop-in alternative.
Recommended
Recommended Products Summary
Engineering reference data for TS914IN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TS914AID | TS914CD | TS914AI | TS3V914IN |
|---|---|---|---|---|---|
| Package | 14-DIP | 14-DIP | 14-DIP | 14-DIP | 14-DIP |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Amplifier Channels | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
| Mounting Style | Through-hole | Through-hole | Through-hole | Through-hole | Through-hole |
Key Differentiators
- Very low input bias current for the verified operating specification (vs LM324D)
- Rail-to-rail input and output behavior (vs MC1458D)
- Four amplifier channels in one 14-pin DIP (vs LM258DR)
Design Notes
Do not treat rail-to-rail as an exact rail-to-rail output guarantee. The TS914IN output can approach, but not necessarily reach, either supply rail under finite load. Check the manufacturer output-swing conditions at the planned load current and temperature. Also account for the 2 mV maximum input offset in low-level sensor paths; if that error is unacceptable, use calibration, a lower-offset amplifier, or a higher closed-loop gain.
Place input and output components close to their associated DIP pins to minimize noise pickup and parasitic feedback. Keep the four amplifier sections' ground returns compact, and decouple the supply pins at the IC rather than relying on a remote bulk capacitor. For the 14-pin DIP, provide adequate clearance around the package, verify socket orientation, and confirm that the board fabrication or assembler correctly recognizes the manufacturer's pin numbering.
The 1 pA typical input bias current is favorable for high-impedance sources, but it does not remove errors caused by input capacitance, leakage in the surrounding circuit, or resistor self-heating. Use guarding, clean PCB surfaces, and short input traces when measuring very small currents. For active filters, confirm the actual gain-bandwidth product and slew rate from the manufacturer datasheet because stable feedback-network design depends on those unavailable ratings.
Verify the amplifier's quiescent and load current at the selected supply voltage before assigning it to a battery or precision analog rail. Rail-to-rail operation does not imply zero overhead: the input and output ranges, load current, and supply limits must remain inside the datasheet envelopes. If the design uses a single supply, define the input common-mode range around mid-supply and confirm that source and sink output currents remain available over the full temperature range.
Compliance Information
The supplied verified results do not explicitly state material-compliance claims for TS914IN. Obtain current compliance documentation from STMicroelectronics or the authorized distributor for the exact ordering code. The AEC-Q100 field is not_applicable because TS914IN is not an automotive-qualified device in the supplied data.
