7432
Quad 2-input OR gates.
+---+--+---+ +---+---*---+
1A |1 +--+ 14| VCC | A | B | Y | Y = A+B
1B |2 13| 4B +===+===*===+
1Y |3 12| 4A | 0 | 0 | 0 |
2A |4 7432 11| 4Y | 0 | 1 | 1 |
2B |5 10| 3B | 1 | 0 | 1 |
2Y |6 9| 3A | 1 | 1 | 1 |
GND |7 8| 3Y +---+---*---+
+----------+
Positive Logic
Y = A+B
7433
Quad 2-input open-collector NOR gates.
+---+--+---+ +---+---*---+ ___
/1Y |1 +--+ 14| VCC | A | B |/Y | /Y = A+B
1A |2 13| /4Y +===+===*===+
1B |3 12| 4B | 0 | 0 | Z |
/2Y |4 7433 11| 4A | 0 | 1 | 0 |
2A |5 10| /3Y | 1 | 0 | 0 |
2B |6 9| 3B | 1 | 1 | 0 |
GND |7 8| 3A +---+---*---+
+----------+
7437
Quad 2-input NAND gates with buffered output.
+---+--+---+ +---+---*---+ __
1A |1 +--+ 14| VCC | A | B |/Y | /Y = AB
1B |2 13| 4B +===+===*===+
/1Y |3 12| 4A | 0 | 0 | 1 |
2A |4 7437 11| /4Y | 0 | 1 | 1 |
2B |5 10| 3B | 1 | 0 | 1 |
/2Y |6 9| 3A | 1 | 1 | 0 |
GND |7 8| /3Y +---+---*---+
+----------+
7438
Quad 2-input open-collector NAND gates with buffered output.
+---+--+---+ +---+---*---+ __
1A |1 +--+ 14| VCC | A | B |/Y | /Y = AB
1B |2 13| 4B +===+===*===+
/1Y |3 12| 4A | 0 | 0 | Z |
2A |4 7438 11| /4Y | 0 | 1 | Z |
2B |5 10| 3B | 1 | 0 | Z |
/2Y |6 9| 3A | 1 | 1 | 0 |
GND |7 8| /3Y +---+---*---+
+----------+
7440
Dual 4-input NAND gates with buffered output.
+---+--+---+ +---+---+---+---*---+ ____
1A |1 +--+ 14| VCC | A | B | C | D |/Y | /Y = ABCD
1B |2 13| 2D +===+===+===+===*===+
|3 12| 2C | 0 | X | X | X | 1 |
1C |4 7440 11| | 1 | 0 | X | X | 1 |
1D |5 10| 2B | 1 | 1 | 0 | X | 1 |
/1Y |6 9| 2A | 1 | 1 | 1 | 0 | 1 |
GND |7 8| /2Y | 1 | 1 | 1 | 1 | 0 |
+----------+ +---+---+---+---*---+
7442
1-of-10 inverting decoder/demultiplexer.
+---+--+---+ +---+---+---+---*---+---+---+---+
/Y0 |1 +--+ 16| VCC | S3| S2| S1| S0|/Y0|/Y1|...|/Y9|
/Y1 |2 15| S0 +===+===+===+===*===+===+===+===+
/Y2 |3 14| S1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
/Y3 |4 13| S2 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 |
/Y4 |5 7442 12| S3 | . | . | . | . | 1 | 1 | . | 1 |
/Y5 |6 11| /Y9 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 |
/Y6 |7 10| /Y8 | 1 | 0 | 1 | X | 1 | 1 | 1 | 1 |
GND |8 9| /Y7 | 1 | 1 | X | X | 1 | 1 | 1 | 1 |
+----------+ +---+---+---+---*---+---+---+---+
7446
Open-collector BCD to 7-segment decoder/common-anode
LED driver with ripple blank input and output.
The 7446 has 30V outputs, 7447 has 15V outputs.
+---+--+---+
A1 |1 +--+ 16| VCC
A2 |2 15| /YF
/LT |3 14| /YG
/RBO |4 13| /YA
/RBI |5 7446 12| /YB
A3 |6 11| /YC
A0 |7 10| /YD
GND |8 9| /YE
+----------+
7447
Open-collector BCD to 7-segment decoder/common-anode LED driver
with ripple blank input and output. The 7447 has 15V outputs.
+---+--+---+
A1 |1 +--+ 16| VCC
A2 |2 15| /YF
/LT |3 14| /YG
/RBO |4 13| /YA
/RBI |5 7447 12| /YB
A3 |6 11| /YC
A0 |7 10| /YD
GND |8 9| /YE
+----------+
7448
BCD to 7-segment decoder/common-cathode LED
driver with rippleblank input and output.
+---+--+---+
A1 |1 +--+ 16| VCC
A2 |2 15| YF
/LT |3 14| YG
/RBO |4 13| YA
/RBI |5 7448 12| YB
A3 |6 11| YC
A0 |7 10| YD
GND |8 9| YE
+----------+
7449
This 7-segment display decoder IC has been superceded and is no longer in production.
It (used to)convert a 4-bit binary-coded decimal value, that is the numbers 0 to 9 coded
as binary patterns 0000 to 1001 into the code required to drive a seven-segment display.
The additional 'ndark' input allows to disable all outputs. This chip was discontinued in 1986.
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We believe the above information to be correct, however, typographical errors
can occur and it is for this very reason, we provide the above information "as is"
with "no Warranty" as to "correctness" nor to its "accuracy". Please, always
check with your " own data books " or via a "Google" search on the net.
Please notify us if you have discovered a typographical error and we will fix it.
E. &. O. E.
This page was upgraded January 30th 2013
+---+--+---+ +---+---+---*---+ ___
1A |1 +--+ 14| VCC | A | B | C |/Y | /Y = ABC
1B |2 13| 1C +===+===+===*===+
2A |3 12| /1Y | 0 | X | X | 1 |
2B |4 7410 11| 3C | 1 | 0 | X | 1 |
2C |5 10| 3B | 1 | 1 | 0 | 1 |
/2Y |6 9| 3A | 1 | 1 | 1 | 0 |
GND |7 8| /3Y +---+---+---*---+
+----------+
+---+--+---+ ________
A |1 +--+ 14| VCC /Y = ABCDEFGH
B |2 13|
C |3 12| H
D |4 7430 11| G
E |5 10|
F |6 9|
GND |7 8| /Y
+----------+