VCC

Unused Input

Input

Output

Output

Input

Unused Input

Frequency - MHz

-20

0

20

40

60

80

-2

0

2

4

6

8

10

D003

Icc 1.8V

Icc 2.5V

Icc 3.3V

Icc 5V

SN74LVC2G08

www.ti.com

SCES198N – APRIL 1999 – REVISED DECEMBER 2015

Typical Application (continued)

9.2.3 Application Curves

Figure 5. ICC vs Frequency

10 Power Supply Recommendations

The power supply can be any voltage between the minimum and maximum supply voltage rating located in the

Recommended Operating Conditions table. Each VCC pin must have a good bypass capacitor to prevent power

disturbance. For devices with a single supply, a 0.1-

μF capacitor is recommended and if there are multiple VCC

pins then 0.01-

μF or 0.022-μF capacitor is recommended for each power pin. It is ok to parallel multiple bypass

capacitors to reject different frequencies of noise. 0.1-

μF and 1-μF capacitors are commonly used in parallel. The

bypass capacitor must be installed as close to the power pin as possible for best results

11 Layout

11.1 Layout Guidelines

When using multiple bit logic devices inputs must not ever float. In many cases, functions or parts of functions of

digital logic devices are unused; for example, when only two inputs of a triple-input AND gate are used or only 3

of the 4 buffer gates are used. Such input pins must not be left unconnected because the undefined voltages at

the outside connections result in undefined operational states. Specified below are the rules that must be

observed under all circumstances. All unused inputs of digital logic devices must be connected to a high or low

bias to prevent them from floating. The logic level that must be applied to any particular unused input depends on

the function of the device. Generally they will be tied to GND or VCC whichever make more sense or is more

convenient.

11.2 Layout Example

Figure 6. Layout Example

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