Other Parts Discussed in Thread: CD74HC221, CD74HCT221,
Number: CS0323764
Contact: JOHN LIGUORI
First name: JOHN
Last name: LIGUORI
Short description: PULSE CUT SHORT, RETRIGGERS WHEN IT SHOULD NOT
Email: jliguori@firecominc.com
Company: FIRECOM INC
Company phone:
Language: English
State: Open
Provide case details or comments:
Dear Representative,
I’m using the SN74LV221APWR, and found the output pulse sometimes is cut short and the device retriggers when it should not.
I found references to this problem on the internet here:
e2e.ti.com/.../836072
e2e.ti.com/.../920058
Questions:
• Is TI currently working on resolving this problem?
• When will devices be available that always have correct output pulse width and are truly non-retriggerable?
• Are there any alternate non-retriggerable devices available now that operate at 5v and similar speed?
Thanks,
JOHN LIGUORI