ds276st-r Maxim Integrated Products, Inc., ds276st-r Datasheet - Page 5

• Manufacturer Part Number: ds276st-r
• Description: Ds276 Low Power Transceiver Chip
• Manufacturer: Maxim Integrated Products, Inc.

NOTES:
1. This circuit as shown does not meet the RS-232 requirement for signal levels (high-level output
2. The capacitor is charged negatively whenever RX
3. RX
voltage). However, as most RS-232 receivers will interpret any voltage over 2V as a space this will
normally be of no consequence. Alternatively, V
voltage supply.
transmitting marking data and RX
time constant determined by the capacitor value and the value of the load resistance. The value shown
should store sufficient charge for reliable operation up to 20 kbps.
will be drawn. Therefore, if negative voltage swings are present on RX
connected to ground and the circuit shown in Figure 4 should be used.
IN
must never be allowed to reach a negative voltage with respect to V
IN
is spacing the capacitor will discharge towards ground with a
5 of 11
IN
DRV+
is in a marking (or idle) state. When the DS276 is
can be supplied independently from a higher
DRV-
IN
, V
or excessive currents
DRV-
should not be
DS276