DESCRIPTION

· The 74AHC123A and 74AHCT123A are dual retriggerable monostable multivibrators with reset.

· Output pulse width is programmable via external components (R EXT and C EXT).

· Pulse width can be extended by retriggering edge-triggered inputs (nA or nB).

· Output delay can be terminated by a LOW-going edge on input nRD.

· Overvoltage tolerant inputs enable use in mixed voltage environments.

FEATURES

· Wide supply voltage range: 2.0 V to 5.5 V.

· DC triggered from active HIGH or LOW inputs.

· Retriggerable for long pulses up to 100% duty factor.

· Direct reset terminates output pulse.

· Overvoltage tolerant inputs up to 5.5 V.

· Schmitt-trigger action on all inputs.

· High noise immunity.

· Input levels: CMOS for 74AHC123A, TTL for 74AHCT123A.

· Latch-up performance exceeds 100 mA per JESD 78 Class II Level A.

· ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.

· Multiple package options.

· Specified from -40 °C to +125 °C.

APPLICATIONS

· Pulse width modulation.

· Timing and delay circuits.

· Signal conditioning.

· Mixed voltage level translation.