(see Note A)

TEST CIRCUIT

S1

Open

GND

VOLTAGE WAVEFORMS

Data Out at

B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.

D. The outputs are measured one at a time, with one transition per measurement.

50 Ω

DUT

50 Ω

50 Ω

50 Ω

Input Generator

Input Generator

Data Out at

3.5 V

1.5 V

Data In at

Ax or Ay

VOLTAGE WAVEFORMS

Output

Input

2.5 V

3.5 V

1.5 V

2.5 V

TEST

S1

3.3 V ± 0.3 V

3.3 V ± 0.3V

Open

Open

200 Ω

4 pF

4 pF

200 Ω

TS3DV621

www.ti.com

SCDS330B – JANUARY 2012 – REVISED MAY 2012

PARAMETER MEASUREMENT INFORMATION (continued)

Skew

Figure 9. Test Circuit and Voltage Waveforms

Copyright © 2012, Texas Instruments Incorporated

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