I'm trying to use a dual inverter
https://www.ti.com/lit/ds/symlink/sn74lvc2gu04.pdf?ts=1722469526037&ref_url=https%253A%252F%252Fwww.google.com%252F to power one of two LEDs based on the output of a caps lock LED from an old Amiga computer. Attachment shows the circuit.
The existing NPN transistor drives the caps lock LED in the original keyboard. Its base is the output of the 6507 keyboard controller (a variant of 6502) reflecting the state of caps lock. Low is lit, high is unlit, as the LED in the original keyboard has VCC on the other side.
What I want to do is not use the original LED, instead use that state as the input to the inverter/LED arrangement shown in "New circuit". When low, the blue LED is off and the red LED on. When high, the blue LED is on and the red LED off.
I don't see anything in the datasheet of the inverter to suggest I am doing anything wrong with it? What happens is that the LED state transitions after a brief pause, when it transitions at all. It isn't reliable. Is it as simple as needing a 10k pullup to pin 1 of the inverter?