HD74LS221 Dual Monostable Multivibrators REJ03D0458–0300 Rev.3.00 Jul.15.2005 This multivibrator features a negative-transition-triggered input and a positive-transition-triggered input either of which can be used as an inhibit input. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input puls.
a negative-transition-triggered input and a positive-transition-triggered input either of which can be used as an inhibit input. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. Schmitt-trigger input circuitry (TTL hysteresis) for B input allows jitter-free triggering from inputs with transition rates as slow as 1 V/s, providing the circuit with excellent noise immunity of typically 1.2 V. A high immunity to VCC noise of typically 1.5 V is also provided by internal latching circuitry. Once fired, the outputs are indepe.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | HD74LS221 |
Hitachi Semiconductor |
Dual Monostable Multivibrators | |
2 | HD74LS221 |
Renesas |
Dual Monostable Multivibrators | |
3 | HD74LS22 |
Hitachi Semiconductor |
Dual 4-input Positive NAND Gates | |
4 | HD74LS20 |
Hitachi Semiconductor |
Dual 4-input Positive NAND Gates | |
5 | HD74LS20 |
Renesas |
Dual 4-input Positive NAND Gates | |
6 | HD74LS20P |
Renesas |
Dual 4-input Positive NAND Gates | |
7 | HD74LS21 |
Hitachi Semiconductor |
Dual 4-input Positive AND Gates | |
8 | HD74LS21 |
Renesas |
Dual 4-input Positive AND Gates | |
9 | HD74LS21P |
Renesas |
Dual 4-input Positive AND Gates | |
10 | HD74LS240 |
Hitachi Semiconductor |
Octal Buffers/Line Drivers/Line Receivers | |
11 | HD74LS240 |
Renesas |
Octal Buffers / Line Drivers / Line Receivers | |
12 | HD74LS240P |
Renesas |
Octal Buffers / Line Drivers / Line Receivers |