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HBSW-8000 Datasheet(PDF) 4 Page - Agilent(Hewlett-Packard)

Part No. HBSW-8000
Description  Hewlett-Packard SmartWand Bar Code Reader
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Maker  HP [Agilent(Hewlett-Packard)]
Homepage  http://www.home.agilent.com
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HBSW-8000 Datasheet(HTML) 4 Page - Agilent(Hewlett-Packard)

   
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4-69
TxD Output Specifications
(VCC = 4.5 V, TA = 25°C)
Min.
Max.
VOH
4.4 V @ 20
µA
3.8 V @ 6 mA
VOL
0.10 V @ -20
µA
0.33 V @ -6 mA
IOL
35 mA
Pin 3 RxD - The received data signal RxD
expects the standard asynchronous serial data
format. It will accept either CMOS level or true
RS-232 level signals. The figure below shows the
equivalent input circuit.
RxD Circuit
Pin Description
Pin 2 TxD - The data output signal TxD obeys
standard serial asynchronous data formats, but
uses zero to five volts CMOS logic levels. It can
be described as CMOS level RS-232. The TxD
output circuit is shown in the figure below. It
will drive TTL, LSTTL, CMOS, HC, and HCT
inputs.
Connector
The standard connector is a 9 pin male D
connector. There is also an option for the cable
to have stripped and tinned wires.
Pin Diagram
Wire
Pin #
Color
Function
1
-
N/C
2
White
TxD Transmitted Data
(from the Reader)
3
Green
RxD Received Data
(to the Reader)
4, 5, 6
-
N/C
7
Black
Ground
8
-
N/C
9
Red
VCC
Shell
Braid
Shield
TxD Circuit
TxD
74HCT240
RxD
74HCT240
100 k
4.7 k
Shield and ground are tied together in the
connector.
1
2
3
4
5
6
7
8
9
MALE 9 PIN SUBMINIATURE D CONNECTOR
Note: If the part is purchased with stripped and
tinned wires, or if the connector is removed, the
ground and shield wires must be connected
together for proper operation.
RxD Input Specifications
(VCC = 5.0 V, TA = 25°C)
VIH
2.0 V 500
µA
VIL
0.8 V @ 1
µA


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