AH342
Active High/Low Complementary Output Hall-effect Latch
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.1 Sep 30, 2005
1/5
Features
- Digital dual complementary sink/source outputs
- Reverse Voltage Polarity protection for full supply
range.
- High output current capability
- Low profile 4 pin SIP package
Applications
- Conveyors
- Motor control
- Power sensing
- Linear or rotary motion detection
- RPM sensing
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.
Pin Assignment
342
1 2
4
3
1 : Vcc
2 : DO
3 : DOB
4 : Vss
Front View
Pin Descriptions
Name
P/I/O
Pin #
Description
Vcc P 1
Positive Power
Supply
DO O 2
Output
Pin
DOB O 3 Output
Pin
Vss P 4
Ground
Ordering Information
AH342 X - X X
P: SIP-4L
Package
Lead
L : Lead Free
Wafer Body
Blank
*Packing: Bulk
AH342
Active High/Low Complementary Output Hall-effect Latch
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Sep 30, 2005
2/5
Block Diagram
660
510
OUTPUT AMP
7.5V
SOURCE
SINK
I
O
Voltage
Regulator
Hall
Sensor
Amp
and
Trigger
Interface
Circuit
Output
Amp
#1
Output
Amp
#2
IO
1
IO
2
Absolute Maximum Ratings
(Note 1)
Characteristics
Sym.
Conditions
Values
Unit
Supply voltage
V
CC
-40
o
C to 125
o
C 28
V
Voltage Externally Applied to Output V
OUT
-40
o
C to 125
o
C
-1.2 to 5
V
Output Current
Ic
10
mA
Magnetic Flux density
B
No limit; the circuit
cannot be damaged by
magnetic overdrive
Unlimited
Operation Temperature
T
OPR
-40 to 125
C
Storage Temperature
T
STG
No power applied
-40 to 150
C
Note 1: 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
Active High/Low Complementary Output Hall-effect Latch
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Sep 30, 2005
3/5
Electrical Characteristics
(Note 2, 3)
24
o
C 2
o
C
-40
o
C to 125
o
C
Characteristic Sym.
Conditions
Min
Typ.
Max
Min Typ. Max
Units
Supply Voltage
V
CC
4.5
- 28 4.5 - 28 V
Supply Current
I
CC
28V0.5%
supply
4 4.5
6 3 4.5 7 mA
Output Voltage
#1
Sourcing
6.0
7.0
7.5
- - -
#2
Sinking
0
0.1
0.2
- - -
#1
Sinking
0
0.1
0.2
- - -
#2 Sourcing
V
OUT
Switch magnetically operated:
No load 28V0.5% supply.
Switch magnetically released:
No load 28V0.5% supply.
6.0
7.0
7.5
- - -
V
Leakage (sink) I
Leak(sink)
Apply voltage 0.2V greater than
measured output source voltage
measure current, no load
28V0.5% supply.
- - 1.0
- - 1.0
A
Output Current
#1
Sourcing
5.5
7.4
8.0
5.0 7.4 8.5
#2
Sinking
2.8
3.4
4.7
2.4 3.4 5.0
#1
Sinking
2.8
3.4
4.7
2.4 3.4 5.0
#2 Sourcing
I
OUT
Apply 2V to output and measure
current. Switch magnetically
operated, no load 28V0.5%.
Apply 2V to output and measure
current. Switch magnetically
released, no load 28V0.5%.
5.5
7.4
8.0
5.0 7.4 8.5
mA
Output Switching Time
Fall Time
tf
90% to 10%; no load 28V0.5%
Supply
- - - - - 1.0
Rise Time
tr
10% to 90%; no load 28V0.5%
Supply
- - - - - 1.0
s
Magnetic Characteristics
( Ta=+25
C)
(Note 2, 3)
(1mT = 10 Gauss)
24
o
C 2
o
C
Vs=12Vdc 0.5%Vdc
-40
o
C to 125
o
C
Vs=4.5Vdc to 28Vdc
Characteristic
Sym.
Min.
Max.
Min.
Max.
Unit
Operate Point
Bop
40
120
30
150
Gauss
Release
Point
Brp
-120 -40 -150 -30
Gauss
Hysteresis
Bhy
120 200 120 200
Gauss
Note 2: 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.
Note 3: 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.
AH342
Active High/Low Complementary Output Hall-effect Latch
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Sep 30, 2005
4/5
B
hy
V
sat
V
cc
( Output Voltage )
B
rp
B
op
0
S
N
( Magnetic flux density B )
DO
Turn on
Turn off
( off-state )
( on-state )
B
hy
V
sat
V
cc
( Output Voltage )
B
rp
B
op
0
S
N
( Magnetic flux density B )
DOB
Turn oFF
Turn on
( off-state )
( on-state )
Performance Characteristics (SIP4)
Ta (
C)
25
50
60
70
80
85
90
95
100
Pd
(mW)
550 440 396 352 308 286 264 242 220
Ta (
C)
105
110
115
120
125
130
135
140
150
Pd
(mW)
198 176 154 132 110 88 66 44 0
P o w e r D issip a tio n C u rve
0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
0
2 5
5 0
7 5
1 0 0
1 2 5
1 5 0
T a ( C )
P d (m W )
NoteSIP-4L package.
Operating Characteristics
Marking side
S
B
hy
V
sat
V
cc
(
Ou
t
p
u
t
Vo
lt
ag
e )
V
d
B
rp
B
op
0
S
N
( Magnetic flux density )
DO
High
Low
( SIP4 )
N
AH342
Active High/Low Complementary Output Hall-effect Latch
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Sep 30, 2005
5/5
Marking Information
342
Part Number
Year:
( Top View )
"2" = 2002
"1" = 2001
X XX A x
Nth week: 01~52
Wafer Lot ID: a~z
~
is lead-free products
Package Information
Active Area Depth
Package Sensor Location
Marking side
0.7mm
1.0460mm + 0.1mm
1
2
3
4
1.9714mm + 0.1mm
Package Dimension
14.25mm
+/-1.25mm
1.03mm
+/-0.1
1.55mm
+/-0.1mm
0.38mm
+/-0.03mm
5.22mm
+/
-
0
.
1
m
m
4.20mm
+/
-
0
.
1
m
m
3.65mm
+/-0.1mm
1.42mm+/-0.1mm
1.27mm
+/-0.03mm
0.41mm
+/-0.03mm
0.30mm
+/-0.1mm
3.
8
1
m
m
+/-0.
0
3m
m
342
0.46mm +/-0.03mm
0.2mm Max.
5
o
-7
o
o
3
o
-5
o
3
o
-5
5
o
-7
o
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