74LVC1G123 Single retriggerable monostable multivibrator Schmitt trigger inputs Rev. 7 20 April 2021 Product data sheet 1. General description The 74LVC1G123 is a single retriggerable monostable multivibrator with Schmitt trigger inputs. Output pulse width is controlled by three methods: 1. The basic pulse is programmed by selection of an external resistor (R ) and capacitor (C ). EXT EXT 2. Once triggered, the basic output pulse width may be extended by retriggering the gated active LOW-going edge input (A) or the active HIGH-going edge input (B). By repeating this process, the output pulse period (Q = HIGH) can be made as long as desired. Alternatively an output delay can be terminated at any time by a LOW-going edge on input CLR, which also inhibits the triggering. 3. An internal connection from CLR to the input gates makes it possible to trigger the circuit by a HIGH-going signal at input CLR. Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in a mixed 3.3 V and 5 V environment. Schmitt trigger inputs, makes the circuit highly tolerant to slower input rise and fall times. This device is fully specified for partial power-down applications using I . The I circuitry OFF OFF disables the output, preventing the damaging backflow current through the device when it is powered down. 2. Features and benefits Wide supply voltage range from 1.65 V to 5.5 V High noise immunity 24 mA output drive (V = 3.0 V) CC CMOS low power consumption 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 on all inputs Complies with JEDEC standard: JESD8-7 (1.65 V to 1.95 V) JESD8-5 (2.3 V to 2.7 V) JESD8-B/JESD36 (2.7 V to 3.6 V) Power-on-reset on outputs Latch-up performance exceeds 100 mA Direct interface with TTL levels Inputs accept voltages up to 5.5 V ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101E exceeds 1000 V Multiple package options Specified from -40 C to +85 C and -40 C to +125 CNexperia 74LVC1G123 Single retriggerable monostable multivibrator Schmitt trigger inputs 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74LVC1G123DP -40 C to +125 C TSSOP8 plastic thin shrink small outline package 8 leads SOT505-2 body width 3 mm lead length 0.5 mm 74LVC1G123DC -40 C to +125 C VSSOP8 plastic very thin shrink small outline package SOT765-1 8 leads body width 2.3 mm 74LVC1G123GT -40 C to +125 C XSON8 plastic extremely thin small outline package SOT833-1 no leads 8 terminals body 1 1.95 0.5 mm 74LVC1G123GN -40 C to +125 C XSON8 extremely thin small outline package no leads SOT1116 8 terminals body 1.2 1.0 0.35 mm 74LVC1G123GS -40 C to +125 C XSON8 extremely thin small outline package no leads SOT1203 8 terminals body 1.35 1.0 0.35 mm 4. Marking Table 2. Marking codes Type number Marking code 1 74LVC1G123DP Y3 74LVC1G123DC Y3 74LVC1G123GT Y3 74LVC1G123GN Y3 74LVC1G123GS Y3 1 The pin 1 indicator is located on the lower left corner of the device, below the marking code. 5. Functional diagram CEXT 6 REXT/CEXT 7 A 1 Q Q 5 B 2 CLR 3 R aaa-001871 Fig. 1. Logic symbol 74LVC1G123 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 7 20 April 2021 2 / 24