Monday, August 1, 2011

DSIX with PO74G04


PO74G04 is an alternative ultra high speed solution for 74HC04, the specification is excellent, supports up to 1.125 GHz bandwidth and the propagation delay is less than 1.4 ns with rise/fall time 0.8 ns.

To me, this is an awesome solution as a replacement for TC74VHCU04.

PO74G04 On the Oscilloscope

PO74G04 @ 100ns/100mV

PO74G04 @ 25ns/100mV

Amazing rise/fall time (compare to the TC74VHCU04 in the following graph).

TC74VHCU04 @ 25ns/200mV

The overshoot and the ringing might be the noise from my power supply, will try to improve this later.

Listening Experience

Noticeable improvement discovered.

1. More silent background, this implies the resolution is greatly improved.
2. More solid bass, even when the bass guitar and the bass drum are played at the same time, you will be able to recognize them respectively.


Highly recommended, what are you waiting for?


  1. Thanks for the graphs. Same experience here: