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

Function of the card:
CTDL-One Way NPN Four
U to T Converter (4 loads)
CIOL ONt WAY NPN ALL LOADS • .
Ctdl-one way npn
Ctdl-one way npn four loads

Complemented Transistor Diode Logic (CTDL) is IBM's term for a form of diode-transistor logic.

Part number:371274

Field replacement part number:370980

Customer Eng reference number:729852

Used in:IBM 1401,IBM 1414 I/O Synchronizer,IBM 7070,IBM 1410

Symbol:C

C: Converter. Used to translate from one voltage level to another, or to change the amplitude of the voltage swing about the same reference level.

Family: CTDL

CRZV CRZV CRZV CRZV

References:
IBM Standard Modular System, Component Circuits, p55.
1_2 SMS Cards, p36.
2_2 SMS Cards, p3.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p2074.
1414 SMS Cards, p25.
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 23:40:33 2015.