CAT5419

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3

DEVICE OPERATION

The CAT5419 is two resistor arrays integrated with 2wire

serial interface logic, four 6-bit wiper control registers and

sixteen 6-bit, non-volatile memory data registers. Each

resistor array contains 63 separate resistive elements

connected in series. The physical ends of each array are

equivalent to the fixed terminals of a mechanical

may be interchanged. The tap positions between and at the

ends of the series resistors are connected to the output wiper

point for each potentiometer is connected to its wiper

terminal at a time and is determined by the value of the wiper

control register. Data can be read or written to the wiper

control registers or the non-volatile memory data registers

via the 2-wire bus. Additional instructions allow data to be

transferred between the wiper control registers and each

respective potentiometer’s non-volatile data registers. Also,

the device can be instructed to operate in an

“increment/decrement” mode.

Table 2. ABSOLUTE MAXIMUM RATINGS

Parameters

Ratings

Units

Temperature Under Bias

−55 to +125

C

Storage Temperature Range

−65 to +150

C

V

−2.0 to +7.0

V

1.0

W

Lead Soldering Temperature (10 s)

300

C

Wiper Current

12

mA

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. The minimum DC input voltage is −0.5 V. During transitions, inputs may undershoot to –2.0 V for periods of less than 20 ns. Maximum DC

Table 3. RECOMMENDED OPERATING CONDITIONS

Parameters

Ratings

Units

+2.5 to 6.0

V

Industrial Temperature

−40 to +85

C