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

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

Input A

(see Note B)

0 V

0 V

In-Phase

Output

Out-of-Phase

Output

VOLTAGE WAVEFORMS

DELAY TIMES

Input B

(see Note B)

LOAD CIRCUIT

Test

Point

(see Note A)

From Output

Under Test

0 V

Input CLR

(see Note B)

Out-of-Phase

Output

In-Phase

Output

VOLTAGE WAVEFORMS

DELAY TIMES

0 V

VOLTAGE WAVEFORMS

PULSE DURATION

Inputs or

Outputs

SN74LV221A-Q1

www.ti.com

SCLS692A

– OCTOBER 2005 – REVISED APRIL 2008

PARAMETER MEASUREMENT INFORMATION

Figure 1. Load Circuit and Voltage Waveforms

Copyright

© 2005–2008, Texas Instruments Incorporated

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