82C82 Ver la hoja de datos (PDF) - Intersil

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82C82

CMOS Octal Latching Bus Driver

Intersil 

82C82

Application Information

Decoupling Capacitors

The transient current required to charge and discharge the

300pF load capacitance specified in the 82C82 data sheet is

determined by:

I = CL(dv/dt)

(EQ. 1)

Assuming that all outputs change state at the same time and

that dv/dt is constant;

I = CL

(---V----C-----Ct-R----x-/-t--F-8---0---%-------)

(EQ. 2)

(EQ. 3)

where tR = 20ns, VCC = 5.0V, CL = 300pF on each of eight

outputs.

I = (8 x 300 x 10-12)x (5.0V x 0.8)/(20 x 10–9) = 480mA (EQ. 4)

VCC

VCC

ALE

MULTIPLEXED

BUS

ICC

ADDRESS

ADDRESS

STB

DATA IN

P

P

N

P

INTERNAL

DATA

N

N

Absolute Maximum Ratings

FIGURE 18. SYSTEM EFFECTS OF GATED INPUTS

Thermal Information

276

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