TECHNICAL DATA KK74HC221A Dual Monostable Multivibrator The KK74HC221A is identical in pinout to the LS/ALS221. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. There are two trigger inputs, A INPUT (negative edge) and B INPUT (positive edge). These inputs are valid for rising/fa.
ORMATION KK74HC221AN Plastic KK74HC221AD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM 1A 1B 1RESET DEXT CEXT REXT CEXT DEXT REXT 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 V CC 1REXT/CEXT 1CEXT 1Q 2Q 2RESET 2B 2A 1Q 2Q 2CEXT 2REXT/CEXT GND FUNCTION TABLE PIN 16 =VCC PIN 8 = GND Note (1) CEXT, REXT, DEXT are external components. (2) DEXT is a clamping diode. The external capacitor is charged to VCC in the stand-by state, i.e. no trigger. When the supply voltage is turned off CX is discharged mainly through an internal parasitic diode. If CX is sufficiently large and .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | KK74HC20A |
KODENSHI KOREA |
Dual 4-Input NAND Gate | |
2 | KK74HC21A |
KODENSHI KOREA |
Dual 4-Input AND Gate | |
3 | KK74HC240A |
KODENSHI KOREA |
Octal 3-State Inverting Buffer/Line Driver/Line Receiver | |
4 | KK74HC241A |
KODENSHI KOREA |
Octal 3-State Noninverting Buffer/Line Driver/Line Receiver | |
5 | KK74HC244A |
KODENSHI KOREA |
Octal 3-State Noninverting Buffer/Line Driver/Line Receiver | |
6 | KK74HC245A |
KODENSHI KOREA |
Octal 3-State Noninverting Bus Transceiver | |
7 | KK74HC251A |
KODENSHI KOREA |
8-Input Data Selector/Multiplexer | |
8 | KK74HC253A |
KODENSHI KOREA |
Dual 4-Input Data Selector/Multiplexer | |
9 | KK74HC257A |
KODENSHI KOREA |
Quad 2-Input Data Selector/Multiplexer | |
10 | KK74HC258A |
KODENSHI KOREA |
Quad 2-Input Data Selectors/Multiplexer | |
11 | KK74HC273A |
KODENSHI KOREA |
Octal D Flip-Flop | |
12 | KK74HC27A |
KODENSHI KOREA |
Triple 3-Input NOR Gate |