74HC123PW-Q100,118

The 74HC123-Q100; 74HCT123-Q100 is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (R_EXT and C_EXT). Once triggered this basic pulse width may be extended by retriggering either of the edge triggered inputs (nA or nB). By repeating this process, the output pulse period (ΔnQ = HIGH, nQ(overline) = LOW) can be made as long as desired. Alternatively, an output delay can be terminated at any time by a LOW-going edge on input nRD. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC. Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise and fall times. This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Applications

• Automotive applications

Key features

• Automotive product qualification in accordance with AEC-Q100 (Grade 1)
• Specified from -40 °C to +85 °C and from -40 °C to +125 °C
• Wide supply voltage range from 2.0 V to 6.0 V
• CMOS low power dissipation
• High noise immunity
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• Complies with JEDEC standards:
• JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V)
• Input levels:
• For 74HC123-Q100: CMOS level
• For 74HCT123-Q100: TTL level
• DC triggered from active HIGH or active LOW inputs
• Retriggerable for very long pulses up to 100 % duty factor
• Direct reset terminates output pulse
• Schmitt-trigger action on all inputs except for the reset input
• ESD protection:
• HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
• Multiple package options
• DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints