74AHCT123APW,118 Nexperia

74AHC123A 74AHCT123A Dual retriggerable monostable multivibrator with reset Rev. 5 17 June 2020 Product data sheet 1. General description The 74AHC123A 74AHCT123A is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (R and C ). EXT 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 (nQ = HIGH, nQ = 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 are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments. 2. Features and benefits Wide supply voltage range from 2.0 V to 5.5 V DC triggered from active HIGH or active LOW inputs Retriggerable for very long pulses up to 100 % duty factor Direct reset terminates output pulse Overvoltage tolerant inputs to 5.5 V All inputs have a Schmitt-trigger action High noise immunity Input levels: For 74AHC123A: CMOS level For 74AHCT123A: TTL level ESD protection: HBM JESD22-A114E exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101C exceeds 1000 V Latch-up performance exceeds 100 mA per JESD 78 Class II Level A Multiple package options Specified from -40 C to +85 C and from -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74AHC123AD -40 C to +125 C SO16 plastic small outline package 16 leads SOT109-1 body width 3.9 mm 74AHCT123AD 74AHC123APW -40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm 74AHCT123APW 74AHC123ABQ -40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal enhanced SOT763-1 very thin quad flat package no leads 16 terminals 74AHCT123ABQ body 2.5 3.5 0.85 mmNexperia 74AHC123A 74AHCT123A Dual retriggerable monostable multivibrator with reset 4. Functional diagram 14 CX 15 RCX 13 1 & 14 1CEXT 2 6 2CEXT 15 1REXT/CEXT 4 7 2REXT/CEXT 3 R S 13 1Q Q 6 5 2Q CX 1A 1 T 7 2A 9 RCX 5 4 1Q Q 9 1B 2 & 12 2Q 2B 10 10 RD 1RD 3 12 2RD 11 11 R 001aae521 001aae522 Fig. 1. Logic symbol Fig. 2. IEC logic symbol 14 1CEXT 15 1REXT/CEXT S 13 Q 1Q 1 1A T 4 1Q Q 2 1B RD 3 1RD 6 2CEXT 7 2REXT/CEXT S 5 2Q Q 9 2A T 12 2Q Q 10 2B RD 11 2RD aaa-000650 Fig. 3. Functional diagram 74AHC AHCT123A All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2020. All rights reserved Product data sheet Rev. 5 17 June 2020 2 / 19