74LV123D,118

74LV123 Dual retriggerable monostable multivibrator with reset Rev. 9 13 September 2021 Product data sheet 1. General description The 74LV123 is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (R and C ). Once triggered this EXT EXT 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. Control inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess V . Schmitt-trigger action at nA and nB inputs makes the CC circuit tolerant of slower input rise and fall times. 2. Features and benefits Wide supply voltage range from 1.0 V to 5.5 V CMOS low power dissipation Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Optimized for low-voltage applications: 1.0 V to 3.6 V Accepts TTL input levels between V = 2.7 V and V = 3.6 V CC CC Typical output ground bounce: < 0.8 V at V = 3.3 V and T = 25 C CC amb Typical HIGH-level output voltage (V ) undershoot: > 2 V at V = 3.3 V and T = 25 C OH CC amb DC triggered from active HIGH or active LOW inputs Retriggerable for very long pulses up to 100 % duty factor Direct reset terminates output pulses Schmitt-trigger action on all inputs except for the reset input Complies with JEDEC standards: JESD8-7 (1.65 V to 1.95 V) JESD8-5 (2.3 V to 2.7 V) JESD8C (2.7 V to 3.6 V) JESD36 (4.5 V to 5.5 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V 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 74LV123D -40 C to +125 C SO16 plastic small outline package 16 leads SOT109-1 body width 3.9 mm 74LV123PW -40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mmNexperia 74LV123 Dual retriggerable monostable multivibrator with reset Type number Package Temperature range Name Description Version 74LV123BQ -40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal enhanced SOT763-1 very thin quad flat package no leads 16 terminals body 2.5 3.5 0.85 mm 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 1Q Q 1 1A T 4 1Q Q 2 1B RD 3 1RD 6 2CEXT 7 2REXT/CEXT S 5 2Q Q 9 2A T 12 Q 2Q 10 2B RD 11 2RD 001aaa610 Fig. 3. Functional diagram 74LV123 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 9 13 September 2021 2 / 19