74LVC1G123

Single retriggerable monostable multivibrator; Schmitt trigger inputs

The 74LVC1G123 is a single retriggerable monostable multivibrator with Schmitt trigger inputs. Output pulse width is controlled by three methods:

The basic pulse is programmed by selection of an external resistor (R_EXT) and capacitor (C_EXT).
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.
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_OFF. The I_OFF circuitry disables the output, preventing the damaging backflow current through the device when it is powered down.

Features and benefits

Wide supply voltage range from 1.65 V to 5.5 V
High noise immunity
±24 mA output drive (V_CC = 3.0 V)
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: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Multiple package options
Specified from -40 °C to +85 °C and -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74LVC1G123DC	Production	1.65 - 5.5	CMOS/LVTTL	± 32	3.5	low	-40~125	203	34.0	113	VSSOP8
74LVC1G123DP	Production	1.65 - 5.5	CMOS/LVTTL	± 32	3.5	low	-40~125	214	19.8	105	TSSOP8
74LVC1G123GN	Production	1.65 - 5.5	CMOS/LVTTL	± 32	3.5	low	-40~125	237	10.5	147	XSON8
74LVC1G123GS	Production	1.65 - 5.5	CMOS/LVTTL	± 32	3.5	low	-40~125	275	10.7	145	XSON8
74LVC1G123GT	Production	1.65 - 5.5	CMOS/LVTTL	± 32	3.5	low	-40~125	326	6.1	156	XSON8

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LVC1G123DC	VSSOP8 (SOT765-1)	SOT765-1		SOT765-1_125	Active	Y3	74LVC1G123DC,125 ( 9352 956 65125 )
74LVC1G123DP	TSSOP8 (SOT505-2)	SOT505-2		SOT505-2_125	Active	Y3	74LVC1G123DP,125 ( 9352 956 67125 )
74LVC1G123GN	XSON8 (SOT1116)	SOT1116	REFLOW_BG-BD-1	SOT1116_115	Active	Y3	74LVC1G123GN,115 ( 9352 956 74115 )
74LVC1G123GS	XSON8 (SOT1203)	SOT1203	REFLOW_BG-BD-1	SOT1203_115	Active	Y3	74LVC1G123GS,115 ( 9352 956 75115 )
74LVC1G123GT	XSON8 (SOT833-1)	SOT833-1		SOT833-1_115	Active	Y3	74LVC1G123GT,115 ( 9352 956 68115 )

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74LVC1G123DC	74LVC1G123DC,125	74LVC1G123DC	Always Pb-free
74LVC1G123DP	74LVC1G123DP,125	74LVC1G123DP	Always Pb-free
74LVC1G123GN	74LVC1G123GN,115	74LVC1G123GN	Always Pb-free
74LVC1G123GS	74LVC1G123GS,115	74LVC1G123GS	Always Pb-free
74LVC1G123GT	74LVC1G123GT,115	74LVC1G123GT	Always Pb-free

Quality and reliability disclaimer

Documentation (13)

File name	Title	Type	Date
74LVC1G123	Single retriggerable monostable multivibrator; Schmitt trigger inputs	Data sheet	2023-08-14
lvc1g123	74LVC1G123 IBIS model	IBIS model	2015-04-02
Nexperia_Selection_guide_2023	Nexperia Selection Guide 2023	Selection guide	2023-05-10
SOT505-2	plastic, thin shrink small outline package; 8 leads; 0.65 mm pitch; 3 mm x 3 mm x 1.1 mm body	Package information	2022-06-03
MAR_SOT1203	MAR_SOT1203 Topmark	Top marking	2013-06-03
SOT1203	plastic, leadless extremely thin small outline package; 8 terminals; 0.35 mm pitch; 1.35 mm x 1 mm x 0.35 mm body	Package information	2022-06-03
REFLOW_BG-BD-1	Reflow soldering profile	Reflow soldering	2021-04-06
MAR_SOT833	MAR_SOT833 Topmark	Top marking	2013-06-03
SOT833-1	plastic, leadless extremely thin small outline package; 8 terminals; 0.5 mm pitch; 1 mm x 1.95 mm x 0.5 mm body	Package information	2022-06-03
SOT765-1	plastic, very thin shrink small outline package; 8 leads; 0.5 mm pitch; 2 mm x 2.3 mm x 1 mm body	Package information	2022-06-03
MAR_SOT1116	MAR_SOT1116 Topmark	Top marking	2013-06-03
SOT1116	plastic, leadless extremely thin small outline package; 8 terminals; 0.3 mm pitch; 1.2 mm x 1 mm x 0.35 mm body	Package information	2022-06-02
REFLOW_BG-BD-1	Reflow soldering profile	Reflow soldering	2021-04-06

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Models

File name	Title	Type	Date
lvc1g123	74LVC1G123 IBIS model	IBIS model	2015-04-02

Ordering, pricing & availability

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.