ZHHXDZ MC1455BDR2G-HX

MC1455BDR2G-HX is a high-performance precision timing circuit capable of accurately generating time delays or oscillation signals. It supports both astable and monostable operating modes, with timing controlled flexibly via external resistor-capacitor combinations. The threshold and trigger levels are set at two-thirds and one-third of the supply voltage, respectively, and can be adjusted through the control voltage terminal. When the trigger input voltage falls below the trigger level, the flip-flop is activated and the output goes high; when the trigger input voltage exceeds the trigger level and the threshold input voltage exceeds the threshold level, the flip-flop resets and the output goes low. The reset input has the highest priority, overriding all other input signals to initiate a new timing cycle. When the reset signal goes low, the flip-flop resets immediately and the output transitions to low. With the output in the low state, a low-impedance path is established between the discharge terminal and ground. The device delivers output currents up to 200mA, operates over a supply voltage range of 5V to 15V, and the output levels are compatible with TTL inputs.

• Astable or monostable mode support
• Low quiescent current, typical 3 mA
• Output current up to ±200 mA
• Adjustable duty cycle

• Monostable operation
• Astable operation