DS1481

Voltage on any pin relative to ground .............1.0V to +7.0V
Operating temperature .......................................0°C to 70°C
Storage temperature ..................................55°C to +125°C
Soldering temperature .........................260°C for 10 seconds

* This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

The DS1481 is a dedicated 1wire timing generator. The device is normally used in conjunction with a parallel port controller to provide the necessary interface to the host processor. Busy signals allow the host processor to perform other tasks while 1wire "timeslots" are completed. The DS1481 also saves the state of D/CLK and RES allowing print spoolers to operate without affecting 1wire communication.

DS1481 based devices can be cascaded. The first device's O1/BSY1 and O2/BSY2 connect to the PC printer port's BUSY and SELECT OUT signals (pins 11 and 13 respectively). The next DS1481 connects its O1/BSY1 and O2/BSY2 to the first device's I1 and I2 respectively. ENO of the first device connects to ENI of the second device. More DS1481's can be stacked in a similar manner. The last devices I1 and I2 connect to BUSY and SELECT of the attached printer.

The DS1481's 3volt operation insures compatibility with most low power parallel ports (i.e., portable computers).