HD74LVC2G66 datasheet(8/12 Pages) RENESAS

8 / 12 page

HD74LVC2G66

Rev.3.00 Jul 07, 2005 page 8 of 11

Test Circuit (cont.)

OPEN

TEST

VTT

GND

/ t

PLH

PHL

/ t

1.8±0.15

2.5±0.2

3.3±0.3

5.0±0.5

INPUTS

VCC (V)

VCC

× VCC

VCC / 2

VCC

Vref

∆V

VTT

tr / tf

500

Ω

0.15 V

0.3 V

500

Ω

500

Ω

1.0 k

Ω

Load circuit

From Output

≤ 2 ns

≤ 2.5 ns

30 pF

50 pF

Vref

0 V

t PLH

t PHL

VOL

Input

Output

VOH

VOL

Control

Input

Vref

VOH – ∆V

VOL + ∆V

Vref

VOH

0 V

VOL

t HZ

t LZ

t ZH

t ZL

Output

(Waveform – A)

Output

(Waveform – B)

Notes: 1. CL includes probe and jig capacitance.

2. Waveform–A is for an output with internal conditions such that the output is low except

when disabled by the output control.

3. Waveform–B is for an output with internal conditions such that the output is high except

when disabled by the output control.

4. All input pulses are supplied by generators having the following characteristics:

PRR

≤ 10MHz, Zo = 50 Ω.

5. The output are measured one at a time with one transition per measurement.

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