R03DS0151EJ0100 Rev.1.00

Page 1 of 8

2019.10.1

Datasheet

μPC271, 311

High Performance Comparator

DESCRIPTION

The µPC271 and µPC311 are high-performance general-purpose comparators that have the same input

characteristics as general-purpose operational amplifiers and can directly drive standard logic circuits such as

TTL, CMOS, and HNIL. Its power supply voltage range is flexible whereby it exhibits excellent characteristics

not only in a 5 V single power supply but also in ± 15 V power supply which is equivalent to an operational

amplifier.

These products are equipped with a strobe terminal and input offset adjustment terminals, thus they can be

widely applied to various voltage comparison circuits.

Depending on the operating ambient temperature, the µPC271 is suitable for communication application while

the µPC311 is suitable for general-purpose usage.

FEATURES

 Input Offset Voltage

±2 mV (TYP.)

 Input Bias Current

100 nA (TYP.)

 Pulse Response Time

200 ns (TYP.)

 Equipped with a Strobe Terminal, ideal for interfacing with logic circuits.

 Two output circuit formats are possible. (open collector, emitter follower)

 Large output current capacity to directly drive the LEDs and lamps.

ORDERING INFORMATION

Ordering Name

Package

μPC271G2-A

8-pin plastic SOP ( 5.72 mm ( 225 mil ))

μPC311G2-A

8-pin plastic SOP ( 5.72 mm ( 225 mil))

EQUIVALENT CIRCUIT

PIN CONFIGURATION (Top View)

1

GND

6

V +

II

2

IN

V -

8

OUT

7

4

3

BALANCE/

STROBE

BALANCE

5

+

-

µPC271G2, μPC311G2

Q20

1.3k

R14

D2

Q18

Q19

R17

5.4k

R18

GND

4

R23

600

R22

200

R21

OUT

800

R9

800

R10

Q14

3.7k

R7

IN

II

5.0k

R20

3.0k

R12

R19

300

BALANCE

BALANCE/

STROBE

3.7k

R6

300

R1

300

R2

1.3k

R3

1.3k

R4

100

R5

780

R8

340

R11

R15

1

4

7

8

5

6

2

3

Q2

Q1

Q3

Q4

Q5

Q7

Q6

Q8

Q10

Q9

Q11

Q12

Q13

Q15

Q16

Q17

Q22

Q21

Q23

Q24

V -

V +

D3

D1

1.3k 800

250

R13

900

R16

R03DS0151EJ0100

Rev.1.00

2019.10.1