DSV14196 データシートの表示（PDF） - National ->Texas Instruments
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DSV14196 Datasheet PDF : 9 Pages
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Applications Information
In a typical Data Terminal Equipment (DTE) to Data
Circuit-Terminating Equipment (DCE) 9-pin de-facto inter-
face implementation, 2 data lines and 6 control lines are re-
quired. The data lines are TXD and RXD. The control lines
are RTS, DTR, DSR, DCD, CTS and RI.
The DSV14196/DSV14196T is a 5 x 3 Driver/Receiver and
offers a single chip solution for this DTE interface. As shown
in Figure 5, this interface allows for direct flow-thru intercon-
nect. For a more conservative design, the user may wish to
insert ground traces between the signal lines to minimize
cross talk.
FAILSAFE RECEIVER OUTPUTS
The DSV14196/DSV14196T features failsafe receiver out-
puts. In failsafe mode, if the receiver input becomes zero or
an open-circuit, the receiver output is pulled to a high level.
LapLink COMPATIBILITY
The DSV14196/DSV14196T can easily provide 128 kbps
data rate under maximum driver load conditions of CL =
2500 pF and RL = 3 kΩ, while power supplies are:
VCC = +3.0V, V+ = 10.8V, V− = −10.8V
MOUSE DRIVING
A typical mouse can be powered from the drivers. Two driver
outputs connected in parallel and set to VOH can be used to
supply power to the V+ pin of the mouse. The third driver out-
put is set to VOL to sink the current from the V−terminal. Re-
fer to typical curves of VOUT/IOUT.Typical mouse specifica-
tions are:
10 mA at +6V 5 mA at −6V
FIGURE 5. Typical DCE Application
DS100853-7
7
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