HT4274CRMZ from HTCSEMI, in a MSOP-8. 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	OUT A	output	Output of amplifier A, with output current specified at ±30 mA (VS = 3 V) and ±50 mA (VS = 5 V).
2	-IN A	input	Inverting input of amplifier A, with input voltage range 0 V to VS and common-mode rejection specified from 0 V to VS.
3	+IN A	input	Non-inverting input of amplifier A, with input voltage range 0 V to VS and absolute maximum input voltage from GND to VS.
4	V-	power_in	Negative supply pin, with absolute maximum supply voltage of 6 V and input/output swing referenced to this rail.
5	+IN B	input	Non-inverting input of amplifier B, with input voltage range 0 V to VS.
6	-IN B	input	Inverting input of amplifier B, with input voltage range 0 V to VS.
7	OUT B	output	Output of amplifier B, with output current specified at ±30 mA (VS = 3 V) and ±50 mA (VS = 5 V).
8	V+	power_in	Positive supply pin, specified for single-supply operation from 2.7 V to 5.5 V with a 6 V absolute maximum supply voltage.

Key specifications

Parameter	Value
Manufacturer	HTCSEMI
Package	MSOP-8
Category	Operational Amplifier/Comparator
Pins	8

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Input offset voltage (HT4274), 0 V ≤ VCM ≤ 1.3 V, C grade	VOS		500	800	µV	0 V ≤ VCM ≤ 1.3 V	2
Input offset voltage (HT4274), 0 V ≤ VCM ≤ 3 V, C grade	VOS		600	850	µV	0 V ≤ VCM ≤ 3 V	2
Input offset voltage (HT4274), 0 V ≤ VCM ≤ 1.3 V, over temperature	VOS			900	µV	−40°C ≤ TA ≤ +85°C	2
Input bias current, C grade	IB		0.2	20	pA	VS = 3 V, VCM = VS/2, TA = 25°C (table default)	2
Input offset current, C grade	IOS		0.1	10	pA	VS = 3 V, VCM = VS/2, TA = 25°C (table default)	2
Input voltage range		0		3	V	VS = 3 V	2
Common-mode rejection ratio	CMRR	85	100		dB	VCM = 0 V to 3 V	2
Large-signal voltage gain, C grade	AVO	20	60		V/mV	VO = 0.5 V to 2.5 V, RL = 2 kΩ, VCM = 0 V	2
High output voltage	VOH	2.92	2.95		V	IL = 1.0 mA	2
High output voltage over temperature	VOH	2.88			V	−40°C ≤ TA ≤ +125°C	2
Low output voltage	VOL		20	35	mV	IL = 1.0 mA	2
Low output voltage over temperature	VOL			50	mV	−40°C ≤ TA ≤ +125°C	2
Output current	IOUT	-30		30	mA		2
Power supply rejection ratio, C grade	PSRR	56	72		dB	VS = 2.7 V to 5.5 V	2
Supply current per amplifier	ISY		500	600	µA	VO = 0 V	2
Supply current per amplifier over temperature	ISY			800	µA	−40°C ≤ TA ≤ +125°C	2
Input offset voltage (HT4274), 0 V ≤ VCM ≤ 5 V, C grade	VOS		600	800	µV	0 V ≤ VCM ≤ 5 V	3
Input offset voltage (HT4274) over temperature	VOS			900	µV	−40°C ≤ TA ≤ +125°C	3
Input bias current, C grade	IB		0.2	20	pA	VS = 5 V, VCM = VS/2, TA = 25°C (table default)	3
Input bias current over temperature, C grade	IB			20	pA	−40°C ≤ TA ≤ +85°C	3
Input bias current over temperature, C grade	IB			100	pA	−40°C ≤ TA ≤ +125°C	3
Input offset current, C grade	IOS		0.1	10	pA	VS = 5 V, VCM = VS/2, TA = 25°C (table default)	3
Input voltage range		0		5	V	VS = 5 V	3
Common-mode rejection ratio	CMRR	85	100		dB	VCM = 0 V to 5 V	3
Large-signal voltage gain, C grade	AVO	20	60		V/mV	VO = 0.5 V to 4.5 V, RL = 2 kΩ, VCM = 0 V	3
High output voltage	VOH	4.925	4.975		V	IL = 1.0 mA	3
High output voltage	VOH	4.7	4.77		V	IL = 10 mA	3
High output voltage over temperature	VOH	4.6			V	−40°C ≤ TA ≤ +125°C	3
Low output voltage	VOL		15	30	mV	IL = 1.0 mA	3
Low output voltage	VOL		125	175	mV	IL = 10 mA	3
Low output voltage over temperature	VOL			250	mV	−40°C ≤ TA ≤ +125°C	3
Output current	IOUT	-50		50	mA		3
Power supply rejection ratio, C grade	PSRR	56	72		dB	VS = 2.7 V to 5.5 V	3
Supply current per amplifier, C grade	ISY		750	1200	µA	VO = 0 V	3
Supply current per amplifier over temperature	ISY			1500	µA	−40°C ≤ TA ≤ +125°C	3
Power supply voltage				6	V		4
Differential input voltage		-6		6	V		4
Operating temperature range		-40		125	°C		4
Storage temperature range		-65		150	°C		4
Junction temperature range		-65		150	°C		4
Lead temperature range (soldering, 60 s)				300	°C	soldering, 60 s	4
ESD, human body model				2	kV	HBM	4

CAD (KiCad official)

Symbol: HT4274CRMZ
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)
3D model files: ht4274crmz-etched.step / ht4274crmz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht4274crmz.step / ht4274crmz.glb are the bare package body.

Provenance

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

Datasheet: HTCSEMI datasheet (13 pp, sha256 54620895fab898f0, retrieved 2026-11-05, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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

HT4274CRMZ

Verified HT4274CRMZ

Verification log 1 record

3D Model

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Schematic Symbol

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Datasheet

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