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

Function of the card:
SDTRL 93Ω Coax Line Driver-Dispersed Loads
SDTRL 93 coax line dr dispersed lds
SDTRL 93 ohm coax lire driver-dispersed loads
SDTRL 93ohm coax line driver-dispersed loads
SDTRL 9311 coax line driver-dispersed loads

Quad Emitter Follower Line Driver

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

Part number:370066

Field replacement part number:370966

Customer Eng reference number:729933

PCB number:493279

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

Symbol:DL

DL: Driver, Line. Used to couple information between two widely separated points by means of coaxial line.

Transistor type:030

References:
2_2 SMS Cards, p115.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1004.
IBM 1311 ILD, p135.
IBM 1620 Instructional System Diagrams, p491.

Pinout:

A I4
B I2
C I3
D O4
E O2
F O3
G O1
H I1
J GND
K
L
M -12V
N +12VM
P
Q
R

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.