PC87200 datasheet(29/33 Pages) NSC

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8.0 Electrical Characteristics (Continued)

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8.3 Electrical Connections

8.3.5 Unused Input Pins

All inputs not used by the system designer should be kept

at either ground or VDD. To prevent possible spurious oper-

ation, connect active-high inputs to ground through a 20-

kohm ( 10%) pull-down resistor and active-low inputs to

VDD through a 20-kohm ( 10%) pull-up resistor.

8.3.6 NC-Designated Pins

Pins designated NC should be left disconnected. Connect-

ing an NC pin to a pull-up resistor, pull-down resistor, or an

active signal could cause unexpected results and possible

circuit malfunctions.

8.3.7 Power and Ground Connections and Decoupling

Testing and operating the PC87200 requires the use of

standard high frequency techniques to reduce parasitic

effects. These effects can be minimized by ﬁltering the DC

power leads with low-inductance decoupling capacitors,

using low-impedance wiring, and by utilizing all of the VDD

and GND pins.

8.4 Absolute Maximum Ratings

Table 6. lists absolute maximum ratings for the PC87200.

Stresses beyond the listed ratings may cause permanent

damage to the device. Exposure to conditions beyond these lim-

its may (1) reduce device reliability and (2) result in prema-

ture failure even when there is no immediately apparent

sign of failure. Prolonged exposure to conditions at or near

the absolute maximum ratings may also result in reduced

useful life and reliability These are stress ratings only and

do not imply that operation under any conditions other than

those listed under Table 7. is possible.

8.5 Recommended Operating Conditions

Table 7. lists the recommended operating conditions for the

PC87200.

Table 6. Absolute Maximum Ratings

Parameter

Min

Max

Units

Comment

Operating Case Temperature

110

˚C

Storage Temperature

–65

150

˚C

No Bias

Supply Voltage

4.0

Voltage On Any Pin:

–0.5

5.5

Table 7. Recommended Operating Conditions

Symbol

Parameter

Min

Max

Units

Comment

Ambient Temperature

˚C

VDD

Supply Voltage

3.0

3.6

3.3 V nominal

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