CD54HC240 Datasheet, PDF (2/14 Pages) Texas Instruments – High-Speed CMOS Logic Octal Buffer/Line Drivers, Three-State

CD54/74HC240, CD54/74HCT240, CD74HC241, CD54/74HCT241, CD54/74HC244, CD54/74HCT244
Pinout
CD54HC240, CD54HCT240, CD54HCT241,
CD54HC244, CD54HCT244
(CERDIP)
CD74HC240, CD74HC241, CD74HCT241,
CD74HC244, CD74HCT244
(PDIP, SOIC)
CD74HCT240,
(PDIP, SOIC, TSSOP)
TOP VIEW
241
240 244
241
244
240
1OE
1A0
2Y3
1A1
2Y2
1A2
2Y1
1A3
2Y0
GND
1OE 1
1A0 2
2Y3 3
1A1 4
2Y2 5
1A2 6
2Y1 7
1A3 8
2Y0 9
GND 10
20 V_CC V_CC
19 2OE (241) 2OE (240, 244)
18 1Y0 1Y0
17 2A3 2A3
16 1Y1 1Y1
15 2A2 2A2
14 1Y2 1Y2
13 2A1 2A1
12 1Y3 1Y3
11 2A0 2A0
Functional Diagram
2
1A0
4
1A1
6
1A2
8
1A3
11
2A0
13
2A1
15
2A2
240
17
AND ^2A3
244 241
1OE 1OE
2OE 2OE
1
19
241
AND
244 240
18
1Y0 1Y0
16
1Y1 1Y1
14
1Y2 1Y2
12
1Y3 1Y3
9
2Y0 2Y0
7
2Y1 2Y1
5
2Y2 2Y2
3
2Y3 2Y3
V_CC = 20
GND = 10
2