TLC2274

Quad CMOS-Input Op-Amp DIP-14 / SOIC-14.1 circuit uses this part.

Datasheet · from ti.com

Substitutes same socket

Parts that fit the same socket: the same function, pin count and pinout. The figures are read off each part's datasheet (this one's from page 11), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.

This part

Part	Input	Supply	GBW	Slew	Noise	Iq	Boards
TLC2274	CMOS, RR out	4.4–16 V	2.25 MHz	3.6 V/µs	9 nV	1.2 mA	1

CMOS rail-to-rail-output quad limited to 16 V total.

Fits the same socket

Part	Input	Supply	GBW	Slew	Noise	Iq	Boards	Differs
LMC660CN	CMOS, RR out	4.75–15.5 V	1.4 MHz	1.1 V/µs	22 nV	0.4 mA	4	CMOS quad limited to 15.5 V total; rail-to-rail output and an input range that includes ground.
TLC27M4AIN	CMOS	3–16 V	1.1 MHz	4.5 V/µs	32 nV	0.06 mA	8	Low-power CMOS quad limited to 16 V; the input range includes the negative rail (single-supply friendly).
TL974	RR out	2.7–12 V	10.6 MHz			2.48 mA	1	much faster, may oscillate in a slow part's place. Low-noise quad (4.4 nV/√Hz at 100 kHz) limited to 12 V total; it will not survive an 18 V rail.
MC33179	bipolar	4–36 V	5 MHz	2 V/µs	7.5 nV	0.425 mA	2	bipolar input. Quad version of the MC33178 in the standard quad pinout.
TL064	JFET	10–30 V	1 MHz	3.5 V/µs	30 nV	0.2 mA	17	JFET input; rated from 10 V. Low-power JFET quad at 200 µA per amplifier.
LF347	JFET	7–36 V	3 MHz	13 V/µs	18 nV	2 mA	20	JFET input. JFET quad; common-mode range must stay 4 V inside each rail.
TLC2264	CMOS, RR out	4.4–16 V	0.73 MHz	0.55 V/µs	12 nV	0.21 mA	3	much slower. CMOS rail-to-rail-output quad limited to 16 V total.
3403	bipolar	5–30 V	1 MHz	0.6 V/µs		0.7 mA	17	bipolar input; much slower. 741-class quad that runs from a single supply; the input range includes the negative rail and the output has a class AB stage.
LM348	bipolar	8–36 V	1 MHz	0.5 V/µs		0.6 mA	2	bipolar input; much slower. Four 741-class amplifiers in the LM324/TL074 pinout.
TL074	JFET	4.5–40 V	5.25 MHz	20 V/µs	37 nV	1.4 mA	315	JFET input. JFET input; inputs must stay 4 V above the negative rail.

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Wally II 2N3904 · BS170 · BS250 · TLC2274 Spaceman Effects Apollo VIIb · 125B	Spaceman Effects Apollo VIIb	Overdrive	Dead End FX	125B	3	$12.00	46