LTC6990IS6#TRMPBF from Analog Devices, in a TSOT-23-6L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OE	input	Output enable: drive high to enable the output driver; driving low disables the output asynchronously, forcing it low (Hi-Z = 0) or floating it (Hi-Z = 1).
2	GND	power_in	Ground; tie to a low inductance ground plane for best performance.
3	SET	passive	Frequency-setting input regulated to 1V above GND, with ISET range 1.25µA to 40µA; connect RSET to GND and limit capacitance to less than 10pF.
4	DIV	input	Programmable divider and Hi-Z mode input; a V+ referenced 4-bit A/D reads VDIV from a resistor divider between V+ and GND, with capacitance limited to less than 100pF.
5	V+	power_in	Supply voltage of 2.25V to 5.5V, kept free from noise and ripple and bypassed directly to GND with a 0.1µF capacitor.
6	OUT	output	Oscillator output swinging from GND to V+ with approximately 30Ω output resistance; use a series resistor to limit source/sink current to 20mA with low-impedance loads.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	TSOT-23-6L
Category	Interface ICs
Pins	6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Output Frequency Recommended Range	fOUT	0.488		1000	kHz	RSET = 50k to 800k	3
Output Frequency Extended Range	fOUT	0.488		2000	kHz	RSET = 25k to 800k	3
Frequency Accuracy Recommended Range (25°C)	ΔfOUT	-1.5	0.8	1.5	%	RSET = 50k to 800k	3
Frequency Accuracy Recommended Range (full temp)	ΔfOUT	-2.2		2.2	%	RSET = 50k to 800k, over temperature	3
Frequency Accuracy Extended Range	ΔfOUT	-2.4		2.4	%	RSET = 25k to 800k	3
Frequency Accuracy Extended Range (full temp)	ΔfOUT	-3.2		3.2	%	RSET = 25k to 800k, over temperature	3
Frequency Drift Over Supply	ΔfOUT/ΔV+		0.23	0.55	%/V	V+ = 4.5V to 5.5V	3
Frequency Drift Over Supply	ΔfOUT/ΔV+		0.06	0.16	%/V	V+ = 2.25V to 4.5V	3
Duty Cycle		47	50	53	%	NDIV = 1, RSET = 25k to 800k	3
Duty Cycle		48	50	52	%	NDIV > 1, RSET = 25k to 800k	3
Voltage at SET Pin	VSET	0.97	1	1.03	V		3
Frequency-Setting Resistor Recommended Range	RSET	50		800	kΩ	Recommended Range	3
Frequency-Setting Resistor Extended Range	RSET	25		800	kΩ	Extended Range	3
DIV Pin Voltage	VDIV	0			V		3
DIV Pin Valid Code Range	ΔVDIV/V+	-1.5		1.5	%	Deviation from Ideal VDIV/V+ = (DIVCODE + 0.5)/16	3
DIV Pin Input Current		-10		10	nA		3
Operating Supply Voltage Range	V+	2.25		5.5	V		3
Supply Current	IS		235	283	µA	RL = ∞, NDIV = 1, RSET = 50k, V+ = 5.5V	3
Supply Current	IS		145	183	µA	RL = ∞, NDIV = 1, RSET = 50k, V+ = 2.25V	3
Supply Current	IS		71	105	µA	RL = ∞, NDIV = 1, RSET = 800k, V+ = 5.5V	3
Supply Current	IS		59	92	µA	RL = ∞, NDIV = 1, RSET = 800k, V+ = 2.25V	3
Supply Current	IS		137	180	µA	RL = ∞, NDIV = 128, RSET = 50k, V+ = 5.5V	3
Supply Current	IS		106	145	µA	RL = ∞, NDIV = 128, RSET = 50k, V+ = 2.25V	3
Supply Current	IS		66	100	µA	RL = ∞, NDIV = 128, RSET = 800k, V+ = 5.5V	3
Supply Current	IS		56	90	µA	RL = ∞, NDIV = 128, RSET = 800k, V+ = 2.25V	3
OE Pin Input Current		-10		10	nA	OE = 0V to V+	4
High Level OE Pin Input Voltage	VIH	0.7			•V+	Note 6	4
Low Level OE Pin Input Voltage	VIL			0.3	•V+	Note 6	4
OUT Pin Hi-Z Leakage		-10		10	µA	OE = 0V, DIVCODE ≥ 8, OUT = 0V to V+	4
Maximum Output Current	IOUT(MAX)	-20		20	mA		4
High Level Output Voltage	VOH	5.45	5.48		V	V+ = 5.5V, IOH = -1mA	4
High Level Output Voltage	VOH	4.84	5.15		V	V+ = 5.5V, IOH = -16mA	4
High Level Output Voltage	VOH	3.24	3.27		V	V+ = 3.3V, IOH = -1mA	4
High Level Output Voltage	VOH	2.75	2.99		V	V+ = 3.3V, IOH = -10mA	4
High Level Output Voltage	VOH	2.17	2.21		V	V+ = 2.25V, IOH = -1mA	4
High Level Output Voltage	VOH	1.58	1.88		V	V+ = 2.25V, IOH = -8mA	4
Low Level Output Voltage	VOL		0.02	0.04	V	V+ = 5.5V, IOL = 1mA	4
Low Level Output Voltage	VOL		0.26	0.54	V	V+ = 5.5V, IOL = 16mA	4
Low Level Output Voltage	VOL		0.03	0.05	V	V+ = 3.3V, IOL = 1mA	4
Low Level Output Voltage	VOL		0.22	0.46	V	V+ = 3.3V, IOL = 10mA	4
Low Level Output Voltage	VOL		0.03	0.07	V	V+ = 2.25V, IOL = 1mA	4
Supply Voltage (V+) to GND	V+			6	V		2
Junction Temperature	TJ			150	°C		2
Storage Temperature Range		-65		150	°C		2
Operating Temperature Range LTC6990I		-40		85	°C	Note 2	2
Specified Temperature Range LTC6990I		-40		85	°C	Note 3	2
Thermal Resistance Junction to Ambient	θJA		192		°C/W	S6 package	2
Thermal Resistance Junction to Case	θJC		51		°C/W	S6 package	2
Frequency Drift Over Temperature	ΔfOUT/ΔT		0.005		%/°C		3
Long-Term Frequency Stability			90		ppm/√kHr	Note 11	3
Power-On Reset Voltage			1.95		V	RSET = 25k to 800k	3

CAD (KiCad official)

Symbol: LTC6990IS6#TRMPBF
Footprint: Package_TO_SOT_SMD:TSOT-23-6
3D model: TSOT-23-6L (KiCad packages3D, STEP)
3D model files: ltc6990is6-trmpbf-etched.step / ltc6990is6-trmpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltc6990is6-trmpbf.step / ltc6990is6-trmpbf.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Analog Devices datasheet (30 pp, sha256 57c3612930febe0d, retrieved 2026-10-30, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

LTC6990IS6#TRMPBF

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3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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