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HBCC-0500 Datasheet(PDF) 4 Page - Agilent(Hewlett-Packard)

Part No. HBCC-0500
Description  Low Current Bar Code Digitizer IC
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Maker  HP [Agilent(Hewlett-Packard)]
Homepage  http://www.home.agilent.com
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HBCC-0500 Datasheet(HTML) 4 Page - Agilent(Hewlett-Packard)

   
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Electrical Characteristics
Parameter
Symbol Typical
Max.
Units
Notes
Supply Current, IC and Sensor
ICC
2.7
4.0
mA
High Level Output Current
IOH
1.0
µA
Low Level Output Voltage
VOL
0.4
V
Output Rise Time
tr
4.5
20
µs4
Output Fall Time
tf
0.3
20
µs4
Wake Up Time
tw
50
200
ms
5
Notes:
4. Rise and fall time will be dependent upon the capacitance of the cable.
5. Wake up time is defined as the time from initial power turn on until the circuit is
digitizing bar codes within data sheet limits.
Inverted Output
The standard output of the
HBCC-0500 is high when the
sensor is looking at black bars,
and low when the sensor is look-
ing at white spaces. If inverted
output is needed, add the extra
circuitry in the inverted output
block. Make sure that the 10 k
pull up resistor on the normal
output transistor is loaded.
Black State Return
The HBCC-0500 normally returns
to the white state 100 millisec-
onds after the last transition. The
extra circuitry forces the black
state after a time out period set
by the 1.0
µF cap. The normal
time out period is about 1.5 sec-
onds. If a longer time is needed,
increase the values of the 1.0
µF
and the 3.3 nF caps. The ratio of
values should be no more than
300:1.
Threshold Adjustment
The standard circuit uses a
threshold designed for most bar
codes. If the bar codes to be read
consistently
have narrow bars
that are lighter than the wide
bars, then the 470 k
Ω and the
390 k
Ω resistors attached to pin
18 should be swapped.
Warranty and Service
HP Digitizer ICs are warranted
for a period of one year after
purchase covering defects in
material and workmanship.
Hewlett-Packard will repair or, at
its option, replace products that
prove to be defective in material
or workmanship under proper
use during the warranty period.
NO OTHER WARRANTIES ARE
EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED
TO THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR
PURPOSE. HEWLETT-PACKARD
IS NOT LIABLE FOR
CONSEQUENTIAL DAMAGES.
For additional warranty or service
information, please contact your
local Hewlett-Packard sales
representative or authorized
distributor.
Recommended Operating Conditions
Parameter
Min.
Max.
Units
Notes
Scan Velocity
7.6 (3)
76 (30)
cm/sec (in/sec)
1
Edge Contrast
40
%
2
VCC
4.5
6.0
V
3
Ambient Temperature
-20
+65
°C
Ambient Light
100,000
Lux
Notes:
1. Narrow element width = 0.19 mm (0.0075 in.).
2. Contrast is defined as Rw - Rb, where Rw is the reflectance of the spaces in Rb is the
reflectance of the bars, measured at the sensor wavelength (655 or 820 nm). 100%
reflectance is barium sulfate.
3. Power supply ripple and noise should be less than 100 mV peak to peak.


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