The SN74LVC1G123DCTR is a single retriggerable Monostable Multi-vibrator, designed for 1.65 to 5.5V VCC operation. This monostable multi-vibrator features output pulse-duration control by three methods. In the first method, the A input is low and the B input goes high. In the second method, the B input is high and the A input goes low. In the third method, the A input is low, the B input is high and the clear (CLR) input goes high. The output pulse duration is programmed by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR low.
Supports 5V VCC Operation
Input Accepts Voltage to 5.5V
8ns at 3.3V Maximum Propagation Delay Time
Supports Mixed-mode Voltage Operation on All Ports
Supports Down Translation to VCC
Schmitt-trigger Circuitry on A and B Inputs for Slow Input Transition Rates
Edge Triggered From Active-High or Active-Low Gated Logic Inputs
Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle
Overriding Clear Terminates Output Pulse
Glitch-free Power-up Reset on Outputs
Ioff Supports Live Insertion, Partial-power-down Mode and Back-drive Protection
Latch-up Performance Exceeds 100mA Per JESD 78, Class II
Green Product, No Sb/Br
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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