115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

3055

MULTIPLEXED

TWO-WIRE HALL EFFECT

SENSOR IC

Electrical

Limits

Symbol

Min.

Typ.

Max.

Units

Power Supply Voltage

V

BUS

——

15

V

Signal Current

I

S

12

15

20

mA

Quiescent Current

V

BUS

= 6 V

I

QH

—

—

2.5

mA

V

BUS

= 9 V

I

QL

—

—

2.5

mA

I

QH

–I

QL

I

Q

—

—

300

µA

Address Range

Addr

1

—

30

—

Clock Thresholds

LOW to HIGH

V

CLH

—

—

8.5

V

HIGH to LOW

V

CHL

6.5

—

—

V

Hysteresis

V

CHYS

—

0.8

—

V

Clock Period

t

CLK

0.1

1.0

—

ms

Address LOW Voltage

V

L

V

RST

6V

CHL

V

Address HIGH Voltage

V

H

V

CLH

9V

BUS

V

Power-On Reset Voltage

V

RST

2.5

3.5

5.5

V

Settling Time

V

BUS

= 9 V

t

h

100

—

—

µs

V

BUS

= 6 V

t

l

100

—

—

µs

Propagation Delay

LOW to HIGH

t

plh

10

—

—

µs

HIGH to LOW

t

phl

——

10

µs

Pin 3 Input Resistance

No Magnetic Field (V

OUT

= HIGH)

R

OUTH

40

—

75

k

Ω

Mag. Field Present (V

OUT

= LOW)

R

OUTL

——

50

Ω

Magnetic Characteristics

Magnetic Thresholds

*Turn-On

B

OP

50

150

300

G

Turn-Off

B

RP

-25

100

300

G

Hysteresis (B

OP

–B

RP

)B

HYS

050

75

G

Characteristics

OPERATIONAL CHARACTERISTIC over operating temperature range.

*Alternate magnetic switch point specifications are available on request. Please contact the factory.

W

Copyright © 1988, 1991, Allegro MicroSystems, Inc.