AH342
ACTIVE HIGH/LOW COMPLEMENTARY OUTPUT
HALL-EFFECT LATCH
Features
•
•
•
•
•
•
Digital dual complementary sink/source outputs
Reverse Voltage Polarity protection for full supply
range.
High output current capability
Low profile packages: SIP-4L
Lead Free Package: SIP-4L
Lead Free Finish/RoHS Compliant (Note 1)
General Description
The AH342 is a bipolar latching hall IC with a pair of
complementary push/pull outputs. A dual hall element is used to
offset stress induced noise and drift. The robust outputs are
capable of sourcing up to 7.4mA and sinking up to 4.4mA. The
device contains inherent reverse polarity protection up to the full
power supply range.
Applications
•
•
•
•
•
Conveyors
Motor control
Power sensing
Linear or rotary motion detection
RPM sensing
Ordering Information
AH 342 - P L - B
Package
P : SIP-4L
Device
Lead-free
Lead Free
L : Lead Free
Packaging
(Note 2)
SIP-4L
Packing
B : Bulk
Bulk
Part Number Suffix
-B
AH342-PL-B
Notes:
Package
Code
P
Quantity
1000
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AH342 Rev. 3
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JANUARY 2009
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Diodes Incorporated
AH342
ACTIVE HIGH/LOW COMPLEMENTARY OUTPUT
HALL-EFFECT LATCH
Pin Assignments
( Top View )
342
1 : Vcc
2 : DO
3 : DOB
4 : Vss
1 2
3
4
SIP-4L
Pin Descriptions
Pin Name
V
CC
DO
DOB
V
SS
NC
Description
Positive Power Supply
Output pin
Output pin
Ground
No Connect
AH342 Rev. 3
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Diodes Incorporated
AH342
ACTIVE HIGH/LOW COMPLEMENTARY OUTPUT
HALL-EFFECT LATCH
Block Diagram
OUTPUT AMP
7.5V
660
SOURCE
I
O
510
SINK
Voltage
Regulator
Output
Amp
#1
Interface
Circuit
Output
Amp
#2
IO
2
IO
1
Hall
Sensor
Amp
and
Trigger
Absolute Maximum Ratings
Symbol
V
CC
V
OUT
Ic
B
T
ST
Notes:
(Note 3)
Characteristics
Supply voltage
Voltage Externally Applied to Output
Output Current
Magnetic Flux density
Storage Temperature
Conditions
-40
o
C to 125
o
C
-40
o
C to 125
o
C
No limit; the circuit cannot be
damaged by magnetic overdrive
No power applied
Rating
±28
-1.2 to 5
±10
Unlimited
-40 to 150
Unit
V
V
mA
°C
3. Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and
magnetic characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are approached nor will the
device necessarily operate at absolute maximum rating.
AH342 Rev. 3
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Diodes Incorporated
AH342
ACTIVE HIGH/LOW COMPLEMENTARY OUTPUT
HALL-EFFECT LATCH
Recommended Operating Conditions
Symbol
V
CC
T
A
Notes:
Characteristic
Supply Voltage
Operating Ambient
Temperature (Note 4)
Operating
Operating
Conditions
Min
4.5
-40
Max
28
125
Unit
V
°C
4. Shall not exceed P
D
and Safety Operation Area.
Electrical Characteristics
(Note 5, 6)
Symbol
I
CC
Characteristic
Supply Current
#1 Sourcing
Conditions
28V±0.5% supply
24
o
C ± 2
o
C
-40
o
C to 125
o
C
Units
Min Typ. Max Min Typ. Max
4
6.0
0
0
6.0
4.5
7.0
0.1
0.1
7.0
-
6
7.5
0.2
0.2
7.5
1.0
3
-
-
-
-
-
4.5
-
-
-
-
-
7
-
-
-
-
1.0
µA
V
mA
Output Voltage
Switch magnetically operated:
No load 28V±0.5% supply.
Switch magnetically released:
No load 28V±0.5% supply.
Apply voltage 0.2V greater than
measured output source voltage
measure current, no load
28V±0.5% supply.
V
OUT
#2 Sinking
#1 Sinking
#2 Sourcing
I
Leak(sink)
Leakage (sink)
-
Output Current
#1 Sourcing
#2 Sinking
I
OUT
#1 Sinking
#2 Sourcing
Output Switching Time
tf
tr
Fall Time
Rise Time
90% to 10%; no load 28V±0.5%
Supply
10% to 90%; no load 28V±0.5%
Supply
-
-
-
-
-
-
-
-
-
-
1.0
µs
1.0
Apply 2V to output and measure
current. Switch magnetically
operated, no load 28V±0.5%.
Apply 2V to output and measure
current. Switch magnetically
released, no load 28V±0.5%.
5.5
2.8
2.8
5.5
7.4
3.4
3.4
7.4
8.0
4.7
4.7
8.0
5.0
2.4
2.4
5.0
7.4
3.4
3.4
7.4
8.5
5.0
mA
5.0
8.5
AH342 Rev. 3
4 of 8
www.diodes.com
JANUARY 2009
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Diodes Incorporated
AH342
ACTIVE HIGH/LOW COMPLEMENTARY OUTPUT
HALL-EFFECT LATCH
Magnetic Characteristics
(T
A
= +25°C) (Note 5, 6)
( 1mT = 10 Gauss )
-40 C to 125
o
C
Vs=4.5Vdc to 28Vdc
Unit
Min
Max
30
150
Gauss
-150
-30
Gauss
120
200
Gauss
o
Symbol
Bop
Brp
Bhy
Notes:
Characteristic
Operate Point
Release Point
Hysteresis
24 C ± 2 C
Vs=12Vdc ± 0.5%Vdc
Min
Max
40
120
-120
-40
120
200
o
o
5. All the parameters are tested under the 25
o
C only. The operation temperature (-40
o
C to 125
o
C) is guaranteed by design, it is typical value.
6. The magnetic field strength (gauss) required to cause the switch to change state (operate and release) will be as specified in the magnetic
characteristics. To test the switch against the specified magnetic characteristics the switch must be placed in a uniform magnetic field.
DO
( Output Voltage )
( Output Voltage )
DOB
( off-state )
( off-state )
V
cc
Turn off
V
cc
Turn on
B
hy
Turn on
B
hy
Turn oFF
( on-state )
( on-state )
V
sat
N
B
rp
0
B
op
S
N
( Magnetic flux density B )
V
sat
B
rp
0
B
op
S
( Magnetic flux density B )
Performance Characteristics
T
A
(°C)
P
D
(mW)
T
A
(°C)
P
D
(mW)
P
D
(m W )
600
500
400
300
200
100
0
0
25
50
75
100
125
150
T
A
(。 C )
25
550
105
198
50
440
110
176
60
396
115
154
70
352
120
132
80
308
125
110
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
P o w e r D issip a tio n C u rve
AH342 Rev. 3
5 of 8
www.diodes.com
JANUARY 2009
©
Diodes Incorporated
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