RS8912

Nano-Power, RRIO, 2.5V, Push-Pull Output Comparator
with Voltage Reference
1 FEATURES•Low Supply Current:3.5μA(TYP) at Vs=2.5V•

Supply Range: +2.5V to +5.5V•

Integrated Voltage Reference:1.2V•

Low Input Offset Voltage: Vos(max) =3.5mV at Vs=5V•

Rail-to-Rail Input•

Push-Pull Output•

Operating Temperature Range:-40°C to +125°C•Micro SIZE PACKAGES: SOT23-6、
UDFN1.6X1.6-6

2 APPLICATIONS•RC TIMERS•

MULTIVIBRATORS•WINDOW DETECTORS•SYSTEM MONITORING•SENSOR SYSTEMS: Smoke Detectors,
Light Sensors, Alarms

REV A.4.1

3 DESCRIPTIONSThe RS8912 is a push-pull output comparator. Itfeatures an uncommitted on-chip voltage reference
and have low quiescent current, input common-mode
range 100mV beyond the supply rails, and singlesupply operation from 2.5V to 5.5V. The integrated
1.2V series voltage reference offers low 60μV/°C drift,
is stable with up to 10nF capacitive load, and canprovide up to 310uA (TYP) of output current.
Featuring a push-pull output stage, the RS8912 allows
for operation with absolute minimum power
consumption when driving any capacitive or resistiveload.
The RS8912 is available in Green SOT23-6 andUDFN1.6X1.6-6 package, it is specified at the fulltemperature range of −40°C to +125°C.

Device Information (1)PART NUMBER

PACKAGEBODY SIZE (NOM)

SOT23-6
UDFN1.6X1.66

1.60mm×2.92mm

RS8912

1.60mm×1.60mm(1)

For all available packages, see the orderable addendum at theend of the data sheet.

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RS8912
Table of Contents
1 FEATURES .......................................................................................................................................................1
2 APPLICATIONS ................................................................................................................................................13 DESCRIPTIONS ................................................................................................................................................14 Revision History ..............................................................................................................................................35 PACKAGE/ORDERING INFORMATION (1) ......................................................................................................46 Pin Configuration and Functions (Top View) ...............................................................................................57 SPECIFICATIONS ............................................................................................................................................67.1 Absolute Maximum Ratings ........................................................................................................................67.2 ESD Ratings................................................................................................................................................67.3 Recommended Operating Conditions .........................................................................................................67.4 Thermal Information:RS8912 ......................................................................................................................77.5 ELECTRICAL CHARACTERISTICS：VS=2.5V .........................................................................................87.6 ELECTRICAL CHARACTERISTICS：VS=5V.............................................................................................97.7 TYPICAL CHARACTERISTICS ............................................................................................................... 108 PACKAGE OUTLINE DIMENSIONS ............................................................................................................. 13
9 TAPE AND REEL INFORMATION ................................................................................................................ 152 / 16

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RS89124 Revision History
Note: Page numbers for previous revisions may different from page numbers in the current version.
VERSION

Change Date

A.3

2022/01/25

A.4

2022/07/04

A.4.1

2024/02/23

Change Item
1. Delete the second remark in the Absolute Maximum Ratings in Page 4@A.2
Version.
2. Added TAPE AND REEL INFORMATION
1. Update Operating Temperature Range: -40°C to +125°C
2. Update ELECTRICAL CHARACTERISTICS and TYPICAL CHARACTERISTICS
3. Update Supply Range: +2.5V to +5.5V
Modify packaging naming

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RS8912
5 PACKAGE/ORDERING INFORMATION (1)-40°C ~125°C

DeviceMarking (2)8912Tape and Reel,3000-40°C ~125°C

8912

Tape and Reel,3000

Orderable Device

Package TypePinChannel

Op Temp(°C)

RS8912XH

SOT23-6

6

1RS8912XUTDL6

UDFN1.6X1.6-6

61

Package Qty

NOTE:(1) This information is the most current data available for the designated devices. This data is subject to change without notice and revisionof this document. For browser-based versions of this data sheet, refer to the right-hand navigation.
(2) There may be additional marking, which relates to the lot trace code information(data code and vendor code)，the logo or theenvironmental category on the device.

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RS8912
6 Pin Configuration and Functions (Top View)(TOP VIEW)(TOP VIEW)

OUT 1
V-

2+IN

36+ -V+

5 REF
4-IN+IN-IN

GND

V-

OUT

REF
V+

SOT23-6
UDFN1 .6X1.6-6

Pin Description
PIN

I/O (1)NAME(1)DESCRIPTION

SOT23-6

UDFN1.6X1.6-6

OUT

13OOutput

V-22P

Negative (lowest) power supply+IN

31I

Noninverting input

-IN

46I

Inverting input

REF

55O

Voltage Reference

V+

64P

Positive (highest) power supply

I=Input, O=Output, P=Power

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RS89127 SPECIFICATIONS
7.1 Absolute Maximum Ratings
Over operating free-air temperature range (unless otherwise noted) (1)
MIN

MAX

Supply, Vs=(V+) - (V-)
VoltageCurrent

7Input pin (IN+, IN-) (2)(V-)-0.5(V+) +0.5

Signal output pin (3)V(V-)-0.5(V+) +0.5

Signal input pin (IN+, IN-) (2)-1010mA

Signal output pin (3)-1010mAOutput short-circuit (4)Continuous

Operating range, TATemperature

UNIT

Junction, TJ(5)Storage, Tstg

-40

125-40

150

-65

150°C

(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should
be current-limited to ±10mA or less.
(3) Output terminals are diode-clamped to the power-supply rails. Output signals that can swing more than 0.5V beyond the supply rails
should be current-limited to ±10mA or less.
(4) Short-circuit to ground, one amplifier per package.
(5) The maximum power dissipation is a function of TJ(MAX), RθJA, and TA. The maximum allowable power dissipation at any ambient
temperature is PD = (T J(MAX) - TA) / RθJA. All numbers apply for packages soldered directly onto a PCB.

7.2 ESD Ratings
The following ESD information is provided for handling of ESD-sensitive devices in an ESD protected area only.
VALUE
V(ESD)(1)

Electrostatic discharge

Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)±3000

Machine Model (MM)

±200

UNITV

JEDEC document JEP155 states that 500 V HBM allows safe manufacturing with a standard ESD control process.

ESD SENSITIVITY CAUTION
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric changes could cause the device not to meet its publishedspecifications.

7.3 Recommended Operating Conditions
Over operating free-air temperature range (unless otherwise noted)
MIN
Supply voltage，Vs= (V+) - (V-）

NOM

MAX

Single-supply

2.5

5.5

Dual-supply

±1.25

±2.75

6 / 16UNITV

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RS8912
7.4 Thermal Information:RS8912
RS8912
THERMAL METRIC (1)

6PINS

UNIT

SOT23-6
RϴJA

Junction-to-ambient thermal resistance

214.7°C/W

RϴJC(top)

Junction-to-case(top) thermal resistance

127.1°C/W

RϴJB

Junction-to-board thermal resistance

60.0°C/W

ѰJT

Junction-to-top characterization parameter

33.4°C/WѰJB

Junction-to-board characterization parameter

59.8°C/W

RϴJC(bot)

Junction-to-case(bottom) thermal resistance

N/A°C/W(1) Thermal resistance varies with operating conditions.

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RS8912
7.5 ELECTRICAL CHARACTERISTICS：VS=2.5V(At TA = +25C, V+=2.5V, V-=0V, VCM=Vs/2, unless otherwise noted.)
RS8912
PARAMETERCONDITIONSUINTSMINTYPMAX

POWER SUPPLYVs

Operating Voltage Range

IQ

Quiescent Current

PSRR

Power-Supply Rejection Ratio

2.5
3.5

5.5

V

8μA

Vs=2.5V to 5.5V,
VCM=(V)+0.5V

70

VCM =0V

15

VCM =2.5V
VCM =Vs/2,-40°C ≤ TA ≤125°C

15dB

INPUT
Vos
ΔVos/ΔT

Input Offset Voltage
Input Offset Voltage Drift

IBInput Bias Current

VCM

Common-Mode Voltage Range

TA = –40°C to 125°CCMRR

Common-Mode Rejection Ratio

VCM =-0.1V to 2.6V

μV/°C

21(V-)-0.1mV

10pA(V+)+0.1

V70dB

OUTPUT
VOH

Output Swing From Upper RailVOL

Output Swing From Lower Rail

ISC

Io=25uA

2.410

2.440

Io=95uA

2.186

2.277

V

Io=25uA55

80

Io=95uA

215

289

Short Circuit Sink Current

VS=±1.25V, VOUT=0V-0.6-0.3

Short Circuit Source Current

VS=±1.25V, VOUT=0V

0.3

0.6

mVmAmASWITCHING
TPHL

Propagation Delay H To L

Overdrive = 20 mV45

Overdrive = 100 mV15Overdrive = 20 mV40

Overdrive = 100 mV

20µs

TPLH

Propagation Delay L To H

TRRise Time

Overdrive = 100 mV

30us

TF

Fall Time

Overdrive = 100 mV

30us

Noise of VREF

f=0.1Hz to 10Hz

20uVRMSVOLTAGE REFERENCE
VREF

Reference Voltage

IREF=0mA

Reference Voltage Drift
Reference Output Current(Source)

1.176

80

8 / 16

1.200

1.224

V

60μV/°C

110uA

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RS8912
7.6 ELECTRICAL CHARACTERISTICS：VS=5V(At TA = +25C, V+=5V, V-=0V, VCM=Vs/2, unless otherwise noted.)
RS8912
PARAMETERCONDITIONSUINTSMINTYPMAX

POWER SUPPLYVs

Operating Voltage Range

IQ

Quiescent Current

PSRR

Power-Supply Rejection Ratio

2.54.85

5.5V10μA

Vs=2.5V to 5.5V,
VCM=(V)+0.5V

70

VCM =0V

13.5

VCM =5V
VCM =Vs/2,-40°C ≤ TA ≤125°C

13.5

dB

INPUT
Vos
ΔVos/ΔT

Input Offset Voltage
Input Offset Voltage Drift

IBInput Bias Current

VCM

Common-Mode Voltage Range

TA = –40°C to 125°C

CMRR

Common-Mode Rejection Ratio

VCM =-0.1V to 5.1V

μV/°C

21(V-)-0.1mV

10pA(V+)+0.1

V70dB

OUTPUT
VOH

Output Swing From Upper RailVOL

Output Swing From Lower Rail

ISC

Io=25uA

4.915

4.935

Io=95uA

4.720

4.785

V

Io=25uA55

72

Io=95uA

215

280

Short Circuit Sink Current

VS=±2.5V, VOUT=0V

-1.1

-0.9

Short Circuit Source Current

VS=±2.5V, VOUT=0V

0.9

1.1mVmAmA

SWITCHING
TPHL

Propagation Delay H To L

Overdrive = 20 mV

25Overdrive = 100 mV

10Overdrive = 20 mV

20Overdrive = 100 mV

10µs

TPLH

Propagation Delay L To H

TRRise Time

Overdrive = 100 mV

12us

TF

Fall Time

Overdrive = 100 mV

12us

Noise of VREF

f=0.1Hz to 10Hz

20uVRMSVOLTAGE REFERENCE
VREF

Reference Voltage

IREF=0mA

1.176

Reference Voltage Drift
Reference Output Current(Source)

200

9 / 16

1.200

1.224

V

50

μV/°C

310

uA

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RS8912
7.7 TYPICAL CHARACTERISTICS
NOTE: The graphs and tables provided following this note are a statistical summary based on a limited number of samples
and are provided for informational purposes only.
At TA = +25C, Vs=5V, VCM = VS/2, CL=15pF unless otherwise noted.
10K

5Input Bias Current(pA)

Quiescent Current(μA)

643211K100
1010.10012345-40 -20 0

620 40 60 80 100 120 140

Temperature(℃)

Supply Voltage(V)Figure 2. INPUT BIAS CURRENT vsTEMPERATURE

Figure 1. Supply Voltage vs Quiescent Current

81.204
IOUT=0mA

1.202

Reference Voltage(V)Supply Current(μA)

765432

1.200

1.198
1.196
1.194
1.192

11.190-55 -35 -15 525 45 65 85 105 125-55 -35 -15 525 45 65 85 105 125

Temperature(℃)

Figure 3. Supply Current vs Temperature

Figure 4. Reference Voltage vs Temperature

2523211917151311975

VS=5V
VCM=0V-200

Propagation Delay L-H(μs)

Propagation Delay H-L(μs)

Temperature(℃)-150-100-50

0252321191715
1311975

VS=5V
VCM=0V0

Overdrive(mV)

50100150200

Overdrive(mV)Figure 5. Propagation Delay vs Overdrive

Figure 6. Propagation Delay vs Overdrive

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RS8912TYPICAL CHARACTERISTICS

2523211917151311975

VS=5V
VCM=0.5V-200-150

Propagation Delay L-H(μs)

Propagation Delay H-L(μs)

NOTE: The graphs and tables provided following this note are a statistical summary based on a limited number of samples
and are provided for informational purposes only.
At TA = +25C, Vs=5V, VCM = VS/2, CL=15pF unless otherwise noted.

-100-502523
21
19171513119750

VS=5V
VCM=0.5V

050

Overdrive(mV)

100

150

200

Overdrive(mV)Figure 8. Propagation Delay vs Overdrive

3025
23
21
1917151311975VS=5V
VCM=4.5V

25

Propagation Delay L-H(μs)

Propagation Delay H-L(μs)

Figure 7. Propagation Delay vs Overdrive

2015105-200-150-100-500

VS=5V
VCM=4.5V050Overdrive(mV)Figure 9. Propagation Delay vs Overdrive

20030

VS=2.5V
VCM=0V

Propagation Delay L-H(μs)

Propagation Delay H-L(μs)

35150

Figure 10. Propagation Delay vs Overdrive

4540100

Overdrive(mV)

30252015105

VS=2.5V
VCM=0V

2520151050-200-150-100-5000Overdrive(mV)Figure 11. Propagation Delay vs Overdrive

50100150200Overdrive(mV)Figure 12. Propagation Delay vs Overdrive11 / 16

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RS8912TYPICAL CHARACTERISTICS
NOTE: The graphs and tables provided following this note are a statistical summary based on a limited number of samples
and are provided for informational purposes only.
At TA = +25C, Vs=5V, VCM = VS/2, CL=15pF unless otherwise noted.
30
VS=2.5V
VCM=0.5V

4035

Propagation Delay L-H(μs)

Propagation Delay H-L(μs)

45

30
25
20
15105

VS=2.5V
VCM=0.5V

252015105-200-150-100-500050

Overdrive(mV)Figure 13. Propagation Delay vs Overdrive

150200Figure 14. Propagation Delay vs Overdrive

5040
VS=2.5V
VCM=2.0V

4540

Propagation Delay L-H(μs)

Propagation Delay H-L(μs)

100Overdrive(mV)

3530252015105

VS=2.5V
VCM=2.0V

3530
252015105-200-150-100-50

00Overdrive(mV)Figure 15. Propagation Delay vs Overdrive

50100

150200Overdrive(mV)Figure 16. Propagation Delay vs Overdrive

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RS8912
8 PACKAGE OUTLINE DIMENSIONSSOT23-6
D1.90
b2.59

EE10.99

Pin1Index Area

0.95

0.69

ee1

RECOMMENDED LAND PATTERN (Unit: mm)

0.2
A A2c

θ
L

A1Dimensions In Millimeters

Dimensions In Inches

SymbolMinMaxMinMax

A

1.050

1.250

0.041

0.049

A1

0.000

0.100

0.000

0.004

A2

1.050

1.150

0.041

0.045

b

0.300

0.500

0.012

0.020

c

0.100

0.200

0.004

0.008

D

2.820

3.020

0.111

0.119

E

1.500

1.700

0.059

0.067

E1

2.650

2.950

0.104

0.116

e0.950(BSC)

0.037(BSC)

e1

1.800

2.000

0.071

0.079

L

0.300

0.600

0.012

0.024

θ

0°

8°

0°

8°

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RS8912
UDFN1.6X1.6-6

D2DE

E2be

TOP VIEW

A1A

A3BOTTOM VIEW

SIDE VIEW

Dimensions In Millimeters

Dimensions In Inches

SymbolMinMaxMinMax

A

0.500

0.600

0.020

0.024

A1

0.000

0.050

0.000

0.002

A30.150 REF

0.006 REF

D

1.550

1.650

0.061

0.065

E

1.550

1.650

0.061

0.065

D2

0.900

1.050

0.035

0.041

E2

0.500

0.650

0.020

0.025

L

0.200

0.300

0.008

0.012

b0.200

0.300

0.008

0.012

e0.500 BSC

0.020 BSC

NOTE:
A. All linear dimension is in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion. Mold flash and protrusion shall not exceed 0.15 per side.
D. BSC: Basic Dimension. Theoretically exact value shown without tolerances.
E. REF: Reference Dimension, usually without tolerance, for information purposes only.

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RS89129 TAPE AND REEL INFORMATIONREEL DIMENSIONSTAPE DIMENSION

ReelDiameter

Reel Width(W1)

DIRECTION OF FEEDNOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF TAPE AND REEL
SOT23-6

Reel
Diameter7’’

Reel
Width(mm)9.5A0(mm)3.17

B0(mm)
3.23K0(mm)1.37

P0(mm)
4.0

P1(mm)
4.0

P2(mm)
2.0W(mm)8.0

Pin1
Quadrant
Q3

UDFN1.6X1.6-6

7’’

9.5

1.86

1.90

0.88

4.0

4.0

2.0

8.0

Q1

Package TypeNOTE:
1. All dimensions are nominal.
2. Plastic or metal protrusions of 0.15mm maximum per side are not included.

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RS8912IMPORTANT NOTICE AND DISCLAIMER
Jiangsu RUNIC Technology Co., Ltd. will accurately and reliably provide technical and reliability data (includingdata sheets), design resources (including reference designs), application or other design advice, WEB tools,
safety information and other resources, without warranty of any defect, and will not make any express or impliedwarranty, including but not limited to the warranty of merchantability Implied warranty that it is suitable for a
specific purpose or does not infringe the intellectual property rights of any third party.
These resources are intended for skilled developers designing with RUNIC products You will be solely
responsible for: (1) Selecting the appropriate products for your application; (2) Designing, validating and testing
your application; (3) Ensuring your application meets applicable standards and any other safety, security orother requirements; (4) RUNIC and the RUNIC logo are registered trademarks of RUNIC INCORPORATED. All
trademarks are the property of their respective owners; (5) For change details, review the revision history
included in any revised document. The resources are subject to change without notice. Our company will not
be liable for the use of this product and the infringement of patents or third-party intellectual property rights due
to its use.

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