BUY 74LS121 https://www.utsource.net/itm/p/928050.html
QUAD 3-STATE BUFFERS
Description: Dual Monostable Multivibrator
Features:
High-Speed Performance: tpd = 8.3 ns (typical) at VCC = 5.0 V
Low Power Consumption: ICC = 4 μA (max) at Ta = 25°C
Wide Operating Voltage Range: VCC (opr) = 2.0 to 6.0 V
Outputs Source/Sink 24 mA
Symmetrical Output Impedance: IOH = IOL = 24 mA (min)
Outputs Can Be Disconnected From VCC and VEE
Schmitt Trigger Inputs
Input Clamping Diodes
Standardized, Symmetrical Output Characteristics
Meets All Requirements of JEDEC Tentative Standard No. 13B, “Standard Specifications for Description of ‘B’ Series CMOS Devices”
Applications:
Pulse Generation
Time Delay Generation
Pulse Width Modulation
Pulse Position Modulation
Sequential Timing
Waveform Generation
(For reference only)
