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

Function of the card:
Mup number i3
SDTRL mup number 13
SDTRL mup

Triple 2 Input AND w/ Not Input OR

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

A Multiple-Use Package (MUP) card has circuits jumpered together directly on the card to form more complex circuits.

Part number: 370206

PCB number: 484009 , hole pattern: 490375

Used in: IBM 1410, IBM 1414 I/O Synchronizer, IBM 1620

Cap code: None (details)

Pinout:

A I3I6
B I3I6
C *I4
D O4
E *I5
F O5
G O6
H *I6
J GND
K I2I5
L I2I5
M -12V
N +12VM
P I1I4
Q I1I4
R I1I4
References: 1410_SMS_VOL_1.pdf, p23
Coslet data

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. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.