ITT - Index of

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SEMICONDUCTORS
DUAL fOUIR-~NPUT
EXl'lEN DE R
The ITT933 element is a dual four-input extender.
The ITT933 consists of two independent diode
arrays identical in every respect to the input diodes
of the DTL gates and buffer elements. It can be
used to e)(tend the fan-in capability to more than
20 without adversely affecting the noise immunity
or load driving capability of the elements to which
they. are connected. Good practice dictates that
extension interconnection paths be as short as
possible to minimize the effects of distributed
capacitance on circuit performance. The ITT933
has a typical input capacitance of 2pf and an output
capacitance of 5pf.
The ITT933 can extend the fan-in of the ITT930.
932.944. and 901 elements.
ABSOLUTE MAXIMUM RATINGS 1
Cha racteristics
Supply Voltage (Vcel. -55°Cto +125°C.
Units
Continuous ....................................... -.5 to +8 Volts
Supply Voltage (V cel. Pulsed. < 1.0 sec .. + 12 Volts
Output Current. Into Inputs .............................. 30 rnA
Input Forward Current ................................... -10 rnA
Input Reverse Current .......................................... 1 rnA
Operating Temperature ................... -55 to + 125°C
Storage Temperature ...................... -65 to + 150°C
Operating Junction Temperature 2 ............... + 175°C
Input Voltage Applied to Input. -1.5 to +5.5 Volts
Lead Temp. (soldering. 60 sec.) ....................... 300° F
ELECTRICAL CHARACTERISTICS 933
ITT933
DUAL FOUR-INPUT EXTENDER
Package: Dual In"Line and Flat Pack
Pinout: Dual In-Line and .Flat Pack
NOTES:
1. Above which useful life may be impaired.
2. Allow 300°C/Watt OJ-A for 1/4" x 1/4"
flatpack and dual in-line. Allow 50°C/Watt
OJ - C for TO-5; 180° C/Watt OJ - C for 1/4"
x 1/4" flatpack and dual in-line. Heat removal
in 1/4" x 1/4" flatpack is highly dependent
upon contact surfaces or air flow and on lead
attachment and thermal paths thru leads, as
well as number of soldered leads.
CIRCUIT SCHEMATIC
:§3-i