2010年5月11日 · If the TTL value started at, say, 128 and you see a value of 28, then there were 100 hops between the system where the packet originated and the final destination. My guess …

2012年8月14日 · Often any 5V logic is called TTL, although most circuits nowadays are built as CMOS. Today there are also many circuits that work at 3.3V, which is no longer TTL. With …

2012年5月8日 · But the domain is still not getting verified. I've hit the refresh button on the 'Domain Settings' page too but to no avail. The only issue I'm having is that my domain host …

2016年12月11日 · A TTL UART will output (and input) only TTL levels, essentially 0 bit = 0V and 1 bit = 5V. And many modern-day gadgets (Arduino, et.al.) simply use TTL voltage levels for …

2023年6月22日 · Additionally, a user might think that a high signal means "100%", and that a low signal means "0%." Depending on the specific TTL driver, this is not true because of the …

2010年11月17日 · Which would be different if it were really TTL, as in your question (the microcontroller is HCMOS). TTL outputs are highly asymmetrical: they can only supply little …

2016年2月10日 · TTL outputs must be able to sink 16 mA with a voltage drop of no more than 0.4 V, and to source 0.4 mA while staying above 2.4 V. (TTL inputs source 1.6 mA, so this is …

2018年3月21日 · Totem Pole output drives the output high and low. Open collector will only pull the output low; it does not drive the output high, only releases the output to float.

2015年12月12日 · LS is a TTL family; HCT is a CMOS family that has TTL-compatible inputs. So in your case, you do not need a pull-up resistor to get a correct voltage level. There might be …

My suspicion is that after the first TTL-485-TTL conversion, the clock-to-data timing is drifting. RS485 is inherently multi-drop, so I'd suggest that rather than daisy-chaining the signals you …