Function of the card:
SDTRL 40 ba inv mesa alloy pwr drvr
SDTRL 40 base inverting mesa alloy power driver
Saturated Drift Transistor Resistor Logic (SDTRL) is a form of resistor-transistor logic using faster drift-field transistors.
Germanium alloy transistors were an early type of transistor, faster than the earlier grown-junction transistors.
Part number:370215
PCB number:484025
Used in:IBM 1414 I/O Synchronizer,IBM 1410
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1032.
1414 SMS Cards, p7.
This page created by Ken Shirriff, 2015.
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.
Creation time: Tue Mar 03 23:40:32 2015.