Old Siemens LSL-TTL chips - functional datasheets?


Thread Starter


This is old "Heimer" plant for beton mixing. Control electronic - logic is build on these chips (particularly looking for FZH291, FZH305, FZK101). No microcontrollers. Looking for extended information about these chips because of possibility to replace them with modern designs.
If anybody has functional schematic, pinouts, truth tables, logic... for these chips.

Gentlemansparks (UK)

These device were also made by Ferranti in UK. They are TTL devices and can be replaced by Texas 74LS series. In the mean time, (i.e. a few days)I will try to fish out some info on these devices listed. Can't promise to find anything!