Re: Tek 2467B
Dallas/Maxim made a few variants of the 1225. The notabletoggle quoted messageShow quoted text
1) Speed, which is unimportant.
2) Temperature range, which is also probably unimportant to you.
3) Voltage tolerance, which is the whole ball game.
The two temperature ranges are: plain (0-70C), and IND (-40-+85C).
The two voltage tolerances are: +/-5% and +/-10%.
The available speeds are 70ns, 150ns, and 200ns.
Tektronix typically lets their 5V get kind of low in scopes,
and it centers around 4.9V on the A5 card. It is a really bad
thing if the DS1225 decides to go into power save too early,
as the CPU will keep on chugging well below a 5% drop. They
specify the temperature range for the scope to be: -15C- +55C.
I typically pick the IND temperature range, the 10% voltage
range, and the 150ns speed, so, I recommend:
The 200ns speed works just as well. The motorala data sheets shows
235ns would work, and I have used either with no issues.
Be safe, get it from Mouser, never ebay or Amazon. It is only $25
jmtfungus via Groups.Io wrote:
Just to confirm, a compatible NVRAM replacement for the 2467B (DS1225Y) is DS1225AD-150+? Thanks Jude