742 series TTL IC's with integrated 25R resistors: 742xxx 7425xxx
Fast bus driver TTL IC's with integrated 25R series resistors for for damping when driving large capacitive loads. Most also have center GND and VCC pins for reducing ground bounce.
+---+--+---+
/1OE |1 +--+ 20| VCC
1A1 |2 19| /2OE
/2Y4 |3 18| /1Y1
1A2 |4 17| 2A4
/2Y3 |5 742 16| /1Y2
1A3 |6 240 15| 2A3
/2Y2 |7 14| /1Y3
1A4 |8 13| 2A2
/2Y1 |9 12| /1Y4
GND |10 11| 2A1
+----------+
+---+--+---+
/1OE |1 +--+ 20| VCC
1A4 |2 19| 2OE
2Y1 |3 18| 1Y1
1A3 |4 17| 2A4
2Y2 |5 742 16| 1Y2
1A2 |6 241 15| 2A3
2Y3 |7 14| 1Y3
1A1 |8 13| 2A2
2Y4 |9 12| 1Y4
GND |10 11| 2A1
+----------+
+---+--+---+
/1OE |1 +--+ 20| VCC
1A1 |2 19| /2OE
2Y4 |3 18| 1Y1
1A2 |4 17| 2A4
2Y3 |5 742 16| 1Y2
1A3 |6 244 15| 2A3
2Y2 |7 14| 1Y3
1A4 |8 13| 2A2
2Y1 |9 12| 1Y4
GND |10 11| 2A1
+----------+
+---+--+---+ +---+---*---+---+
DIR |1 +--+ 20| VCC |/EN|DIR| A | B |
A0 |2 19| /EN +===+===*===+===+
A1 |3 18| B0 | 1 | X | Z | Z |
A2 |4 17| B1 | 0 | 0 | B | Z |
A3 |5 742 16| B2 | 0 | 1 | Z | A |
A4 |6 245 15| B3 +---+---*---+---+
A5 |7 14| B4
A6 |8 13| B5
A7 |9 12| B6
GND |10 11| B7
+----------+
+---+--+---+
A1 |1 +--+ 28| A6
A2 |2 27| A7
A3 |3 26| A8
A4 |4 25| A9
A5 |5 24| A10
/OE1 |6 23| A11
VCC |7 742 22| GND
GND |8 410 21| GND
/OE2 |9 20| Y11
Y5 |10 19| Y10
Y4 |11 18| Y9
Y3 |12 17| Y8
Y2 |13 16| Y7
Y1 |14 15| Y6
+----------+
+---+--+---+
A1 |1 +--+ 28| A6
A2 |2 27| A7
A3 |3 26| A8
A4 |4 25| A9
A5 |5 24| A10
/OE1 |6 23| A11
VCC |7 742 22| GND
GND |8 411 21| GND
/OE2 |9 20|/Y11
/Y5 |10 19|/Y10
/Y4 |11 18|/Y9
/Y3 |12 17|/Y8
/Y2 |13 16|/Y7
/Y1 |14 15|/Y6
+----------+
+---+--+---+ +---+---+---*---+
/OE |1 +--+ 20| VCC |/OE|CLK| D | Q |
D1 |2 19| Q1 +===+===+===*===+
D2 |3 18| Q2 | 1 | X | X | Z |
D3 |4 17| Q3 | 0 | / | 0 | 0 |
D4 |5 742 16| Q4 | 0 | / | 1 | 1 |
D5 |6 574 15| Q5 | 0 |!/ | X | - |
D6 |7 14| Q6 +---+---+---*---+
D7 |8 13| Q7
D8 |9 12| Q8
GND |10 11| CLK
+----------+
+---+--+---+
/OE1 |1 +--+ 24| VCC
A1 |2 23| Y1
A2 |3 22| Y2
A3 |4 21| Y3
A4 |5 20| Y4
A5 |6 742 19| Y5
A6 |7 827 18| Y6
A7 |8 17| Y7
A8 |9 16| Y8
A9 |10 15| Y9
A10 |11 14| Y10
GND |12 13| /OE2
+----------+
+---+--+---+
/OE1 |1 +--+ 24| VCC
A1 |2 23| /Y1
A2 |3 22| /Y2
A3 |4 21| /Y3
A4 |5 20| /Y4
A5 |6 742 19| /Y5
A6 |7 828 18| /Y6
A7 |8 17| /Y7
A8 |9 16| /Y8
A9 |10 15| /Y9
A10 |11 14| /Y10
GND |12 13| /OE2
+----------+
+---+--+---+
B8 |1 +--+ 24| VCC
B7 |2 23| A8
B6 |3 22| A7
B5 |4 21| A6
B4 |5 20| A5
B3 |6 742 19| A4
B2 |7 952 18| A3
B1 |8 17| A2
/OEAB |9 16| A1
CLKAB |10 15| /OEBA
/CEAB |11 14| CLKBA
GND |12 13| /CEBA
+----------+
+---+--+---+
B8 |1 +--+ 24| VCC
B7 |2 23| A8
B6 |3 22| A7
B5 |4 21| A6
B4 |5 20| A5
B3 |6 742 19| A4
B2 |7 953 18| A3
B1 |8 17| A2
/OEAB |9 16| A1
CLKAB |10 15| /OEBA
/CEAB |11 14| CLKBA
GND |12 13| /CEBA
+----------+
+---+--+---+
/1Y1 |1 +--+ 24| /1OE
GND |2 23| 1A1
/1Y2 |3 22| 1A2
/1Y3 |4 21| VCC
GND |5 20| 1A3
/1Y4 |6 7425 19| 1A4
/2Y1 |7 240 18| 2A1
GND |8 17| 2A2
/2Y2 |9 16| VCC
/2Y3 |10 15| 2A3
GND |11 14| 2A4
/2Y4 |12 13| /2OE
+----------+
+---+--+---+
1Y1 |1 +--+ 24| /1OE
GND |2 23| 1A1
1Y2 |3 22| 1A2
1Y3 |4 21| VCC
GND |5 20| 1A3
1Y4 |6 7425 19| 1A4
2Y1 |7 240 18| 2A1
GND |8 17| 2A2
2Y2 |9 16| VCC
2Y3 |10 15| 2A3
GND |11 14| 2A4
2Y4 |12 13| /2OE
+----------+
+---+--+---+ +---+---*---+---+
A1 |1 +--+ 24| DIR |/EN|DIR| A | B |
GND |2 23| B1 +===+===*===+===+
A2 |3 22| B2 | 1 | X | Z | Z |
A3 |4 21| VCC | 0 | 0 | B | Z |
GND |5 20| B3 | 0 | 1 | Z | A |
A4 |6 7425 19| B4 +---+---*---+---+
A5 |7 245 18| B5
GND |8 17| B6
A6 |9 16| VCC
A7 |10 15| B7
GND |11 14| B8
A8 |12 13| /EN
+----------+
+---+--+---+
A1 |1 +--+ 24| DIR
GND |2 23| B1
A2 |3 22| B2
A3 |4 21| VCC
GND |5 20| B3
A4 |6 7425 19| B4
A5 |7 642 18| B5
GND |8 17| B6
A6 |9 16| VCC
A7 |10 15| B7
GND |11 14| B8
A8 |12 13| /OE
+----------+
[ FREE Ham Radio Data Center [ 73s.eu - FREE Ham Radio Social Network [ About
me | Acronyms | CW
| Data Sheets | Docs
| Download | E-mail
| HOME | Ham
projects | Hobby
circuits | Photo galery
| PIC | QTH
photos |
Sign
in my guestbook | View
my guestbook ]
© 2001 - YO5OFH, Csaba Gajdos