This page describes the IBM SMS card "TCK", and is part of the SMS card database.

Function of the card:
SDTRL-End of Line Terminators

100ohm terminators: Quad to 0V w/9 to 1.5V

Saturated Drift Transistor Resistor Logic (SDTRL) is a form of resistor-transistor logic using faster drift-field transistors.

Part number:370334

Field replacement part number:370334

Customer Eng reference number:729930

PCB number:493281

Used in:IBM 1620,IBM 1401,IBM 1311 Disk,IBM 1410

Symbol:

References:
2_2 SMS Cards, p121.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1085.
IBM 1311 ILD, p136.
IBM 1620 Instructional System Diagrams, p491.

Pinout:

A T1B
B T2B
C T3B
D T4B
E T5B
F T6B
G T1A
H T7B
J GND
K T8B
L T9B
M
N +12VM
P T2A
Q T3A
R T4A

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 23:40:34 2015.