Is there a pin-compatible replacement for TL084IDR?

Several op-amps like TP2584-SR share the standard SOIC-14 package, but pin-to-pin functional compatibility is not guaranteed and must be verified by comparing datasheets, as key performance parameters differ.

What risks should I check before replacing TL084IDR?

Key risks are incompatible supply voltage (many parts are low-voltage only), reduced slew rate affecting signal integrity, and different input types (JFET vs. CMOS/Bipolar) impacting bias current, noise, and overall circuit behavior.

TL084IDR Alternatives, Datasheet & Cross Reference | Texas Instruments

The TL084IDR is a popular quad JFET op-amp for high-impedance, high-voltage applications. Finding a substitute requires careful matching of supply voltage, slew rate, and input characteristics.

AI replacement insight

Electrical riskmedium

Slew rate and input type differences require circuit validation.

Package risklow

Candidates share the common SOIC-14 package, but pinout must be confirmed.

Can it be replaced directly?

No direct drop-in replacement was identified. All viable candidates have performance differences and require engineering validation.

Best replacement path

TP2584-SR is a potential functional alternative, but requires engineering review of slew rate and input stage differences.

Main risk

The primary risk is performance degradation, especially in slew rate, and functional changes due to different amplifier input technology (JFET vs. CMOS/Bipolar).

Recommended alternatives

A functional alternative with higher bandwidth, but requires review of its lower slew rate and different input characteristics.

View details

Alternative comparison matrix

Feature / factor	TL084IDR	TP2584-SR	LM324A-SR	Compatibility / risk
Package	SOIC-14	SOIC-14	SOIC-14	SOIC-14 — Package matches.; LM324A-SR: Package matches.
Voltage	18V to 30V	3V to 36V	3V to 36V	3V to 36V — Wider supply range is compatible.; LM324A-SR: Wider supply range is compatible.
Gbp	3 MHz	10 MHz	0.9 MHz	10 MHz / 0.9 MHz — Higher bandwidth may improve performance.; LM324A-SR: Significantly lower bandwidth.
Slew Rate	13 V/µs	8 V/µs	0.5 V/µs	8 V/µs / 0.5 V/µs — Slower slew rate may impact high-speed signals.; LM324A-SR: Critically lower slew rate, unsuitable for fast signals.
Input Type	JFET	CMOS (assumed)	Bipolar	CMOS (assumed) / Bipolar — Different input stage affects bias current and noise.; LM324A-SR: Different input stage (Bipolar vs JFET) means much higher input bias current.

Application & sourcing insights

Questions & answers

TP2584-SR is a potential functional alternative with higher bandwidth, but its lower slew rate and CMOS input require engineering review. For low-speed, cost-sensitive applications, LM324A-SR could be considered as a high-risk downgrade.