You could substitute a 74AHC04 which has better control of ground and
Vcc bounce.
At least they are specified.
At least a 3dB attenuator with a 5370B.
at least 11dB with a 5370A.
Or just use the built in 20dB (10x) attenuator.
Bruce
Dave hartzell wrote:
Thanks for the tips Bruce.
Is there a "better" version of the 74AC04? It sounds like I should also
use an attenuator, perhaps 3 - 10 dB...
Dave
On Sun, Feb 28, 2010 at 7:43 PM, Bruce Griffiths<[email protected]
wrote:
The TADD-2 output drivers exhibit significant ringing and crosstalk due to
ground and Vcc bounce.
To minimise crosstalk dedicate each 74AC04 output device to a single
frequency and load.
Because of the ringing setting the trigger threshold is more critical than
usual.
No damage occurs when driving the 5370A/B 1x inputs with 5V logic levels
however various protection diodes will turn on and the preamp input stage
becomes nonlinear.
Bruce
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