74VHC05 datasheet(4/7 Pages) STMICROELECTRONICS

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DYNAMIC SWITCHING CHARACTERISTICS

Symb ol

Parameter

T est Cond ition s

Val ue

Un it

VCC

(V)

TA =25

-40 to 85

Min.

Typ .

Max.

Min .

Max.

VOLP

Dynamic Low Voltage

Quiet Output (note 1, 2)

5.0

CL =50 pF

0.4

0.8

VOLV

-0.8

-0.4

VIHD

Dynamic High Voltage

Input (note 1, 3)

5.0

3.5

VILD

Dynamic Low Voltage

Input (note 1, 3)

5.0

1.5

1) Worst case package.

2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n -1) outputs switching and one output at GND.

3) Max number of data inputs (n) switching. (n-1) switching 0V to5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f=1MHz.

TEST CIRCUIT

WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)

CL = 15/50 pF or equivalent (includes jig and probe capacitance)

RL =R1 =1K

Ω or equivalent

RT =ZOUT of pulse generator (typically 50

Ω)

74VHC05

4/7

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