(see Note A)

TEST CIRCUIT

S1

Open

GND

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

TEST

S1

200 Ω

GND

4 pF

0.3 V

Input Generator

Input Generator

GND

200 Ω

4 pF

0.3 V

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

Output Control

0 V

Output

Waveform 2

S1 at GND

(see Note B)

Output

Waveform 1

(see Note B)

3.3 V ± 0.3 V

3.3 V ± 0.3 V

1.65 V

1.65 V

3.33 V

TS3DDR3812

www.ti.com

SCDS314A

– FEBRUARY 2011 – REVISED MARCH 2011

PARAMETER MEASUREMENT INFORMATION

Enable and Disable Times

Figure 5. Test Circuit and Voltage Waveforms

Copyright

© 2011, Texas Instruments Incorporated

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