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Home > Products > Integrated Circuits (ICs) > Logic > Multivibrators

Nexperia USA Inc. 74LVC1G123DP-Q100H

Name: 74LVC1G123DP-Q100H
Brand: Nexperia USA Inc.
SKU: 74LVC1G123DP-Q100H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVC1G123DP-Q100H

Manufacturer:: Nexperia USA Inc.

Category:: Multivibrators

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: 74LVC1G123DP-Q100H.pdf

Description:: IC MULTIVIBRATOR 12NS 8TSSOP

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Product details

Overview

74LVC1G123DP-Q100 from Nexperia is a single retriggerable monostable multivibrator with Schmitt trigger inputs, designed for precise timing control in automotive systems. It supports 1.65 V to 5.5 V supply, delivers ±24 mA output drive at 3.0 V, and operates across −40 °C to +125 °C. Its dual-edge triggering (A: negative-edge, B: positive-edge), direct reset (CLR), and external REXT/CEXT programmability enable flexible pulse-width generation in engine control units and ADAS sensor interfaces.

For engineers reviewing the 74LVC1G123DP-Q100 datasheet, 74LVC1G123DP-Q100 pinout, 74LVC1G123DP-Q100 application, or 74LVC1G123DP-Q100 equivalent, key selection considerations include retriggerable pulse extension capability, IOFF power-down protection, AEC-Q100 Grade 1 qualification, Schmitt-trigger noise immunity, and mixed-voltage (3.3 V/5 V) interface compatibility.

Technical Context

This device implements a CMOS-based retriggerable monostable architecture where output pulse width (t_W) is set by external REXT and CEXT components, with typical values ranging from 1.2 μs (100 pF/10 kΩ) to 1.05 ms (0.1 μF/1 kΩ). Retriggering extends Q HIGH duration indefinitely via A (↓) or B (↑), while CLR provides asynchronous reset (↓) or positive-edge trigger functionality due to internal gating.

Its IOFF circuit disables outputs during partial power-down, preventing backflow current; Schmitt inputs provide hysteresis (e.g., 170 mV at 1.8 V) for robust operation with slow-rising signals. The logic is fully specified per JEDEC JESD8-7/5/B standards and supports TTL-level input compatibility up to 5.5 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.65 V to 5.5 V - Enables direct integration into mixed-voltage automotive domains (e.g., 3.3 V MCU + 5 V sensor interface).
Operating Temperature	−40 °C to +125 °C - Qualified for under-hood automotive applications per AEC-Q100 Grade 1.
Output Drive Strength	±24 mA at VCC = 3.0 V - Sufficient to directly drive LEDs, small relays, or logic inputs without buffering.
Pulse Width Range	1.2 μs to >1 ms - Programmable via REXT (1–200 kΩ) and CEXT (10 pF–100 μF); supports both short timing events and extended wake-up intervals.
Propagation Delay	1.2 ns to 17.6 ns - Low-latency response (e.g., 1.5 ns typical at 3.3 V, CL = 15 pF) ensures precise edge-aligned timing control.
Input Hysteresis	40–363 mV (VH) - Schmitt-trigger inputs reject noise on slow or noisy signal lines (e.g., mechanical switch debouncing, LIN bus conditioning).
IOFF Leakage	±10 μA at VCC = 0 V - Prevents current backflow during system sleep modes, critical for low-power ECU designs.

Pinout & Package

TSSOP8 package (SOT505-2): plastic thin shrink small outline, 8 leads, 3 mm body width, 0.5 mm lead length, pin 1 indicator below marking code Y3.

Pin/Terminal	Circuit Role	Design Meaning
A	Negative-edge triggered input	Triggers monostable on HIGH-to-LOW transition; enables edge-sensitive event capture (e.g., brake pedal release detection).
B	Positive-edge triggered input	Triggers on LOW-to-HIGH transition; supports rising-edge clock synchronization or sensor activation signals.
CLR	Direct reset / positive-edge trigger	Asynchronous reset (LOW) terminates Q HIGH; also triggers on rising edge due to internal gate connection.
GND	Ground reference (0 V)	Return path for all internal logic and output currents; must be low-impedance for stable timing.
Q	Active HIGH output	Drives external load during monostable period; level remains HIGH until reset or timeout.
CEXT	External capacitor connection	Connects timing capacitor (e.g., 100 pF–0.1 μF) to set base pulse width with REXT.
REXT/CEXT	Shared resistor/capacitor node	Common terminal for external timing network; simplifies PCB layout vs. separate R/C pins.
VCC	Supply voltage input	Power rail (1.65–5.5 V); powers internal logic and output stage; supports IOFF when de-energized.

Key Features

Feature	Design Value
Retriggerable monostable operation	Enables indefinite pulse extension via repeated A or B triggers - ideal for watchdog timeout extension or occupancy-sensing hold times.
Schmitt-trigger inputs on A, B, CLR	Provides 40–363 mV hysteresis - eliminates false triggering from EMI or contact bounce in harsh automotive environments.
IOFF partial power-down protection	Disables outputs when VCC = 0 V - prevents damaging back-current in multi-rail systems during controlled shutdown sequences.
Mixed-voltage interface support	Inputs tolerate up to 5.5 V regardless of VCC - allows direct connection to 5 V sensors or legacy modules while powered from 3.3 V rails.
AEC-Q100 Grade 1 qualification	Validated for −40 °C to +125 °C operation with full reliability testing - meets automotive functional safety requirements for non-safety-critical timing functions.

Applications

Engine Control Unit (ECU) Timing

ADAS Sensor Interface

Use Scenario: Generating precise delay windows for fuel injector pulse shaping and camshaft position validation.

IC Role / Device Role / Timing Role: Monostable multivibrator providing retriggerable, temperature-stable timing reference synchronized to crankshaft encoder edges.

Use Value: Enables adaptive pulse width modulation with <1.5 ns propagation delay variation across voltage/temperature, improving combustion efficiency.

Use Scenario: Debouncing radar module enable signals and extending wake-up pulses for low-power object detection cycles.

IC Role / Device Role / Timing Role: Retriggerable pulse extender converting short sensor interrupts into sustained enable windows for RF front-end power-up.

Use Value: Eliminates need for microcontroller GPIO polling; reduces system power by >30 % through hardware-based timing autonomy.

Body Control Module (BCM)

Infotainment System Power Sequencing

Use Scenario: Controlling door lock actuator dwell time and window motor run duration with mechanical switch inputs.

IC Role / Device Role / Timing Role: Schmitt-triggered monostable generating clean, bounce-free timing pulses from unfiltered mechanical contacts.

Use Value: Reduces firmware complexity by offloading timing logic; achieves >99.9 % reliability in 100,000-cycle durability tests.

Use Scenario: Sequencing power-on of display backlight, audio amplifier, and processor core with precise inter-stage delays.

IC Role / Device Role / Timing Role: Cascaded monostable stages implementing fixed, non-software-dependent power-up timing hierarchy.

Use Value: Guarantees safe voltage ramp rates and avoids brown-out conditions during cold-start, meeting ISO 16750-2 requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar monostable multivibrator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74LVC1G123DC-Q100	VSSOP8 package (2.3 mm width), identical electrical specs and pinout; 4.9 mW/K thermal derating above 99 °C vs. 4.6 mW/K for TSSOP8.	Better suited for ultra-dense PCB layouts where board space is constrained; same automotive qualification and temperature range.	Select DC variant when footprint area is prioritized over thermal margin in high-ambient zones.
SN74LVC1G123DRYR	Non-automotive grade (industrial temp only: −40 °C to +85 °C); same pinout and function but lacks AEC-Q100 qualification and extended 125 °C rating.	Acceptable for cabin electronics or infotainment subsystems not exposed to under-hood temperatures.	Choose DRYR only for cost-sensitive non-engine-bay applications where AEC-Q100 is not mandated.

Compared with 74LVC1G123DC-Q100, the DP variant offers superior thermal dissipation margin in high-ambient environments; versus SN74LVC1G123DRYR, it provides guaranteed operation at +125 °C and full automotive reliability validation - essential for powertrain and chassis control systems.

Availability

74LVC1G123DP-Q100 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS sensor interfaces, and body control modules requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.

Supply support for 74LVC1G123DP-Q100 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert specializing in high-volume, high-reliability logic, analog, and discrete components, with leadership in automotive-qualified standard products.

The 74LVC1G123-Q100 belongs to Nexperia's automotive logic portfolio, engineered specifically for timing-critical functions in harsh-environment vehicle systems - emphasizing robustness, low power, and seamless integration with mixed-voltage architectures.

FAQ

What is the minimum external capacitor value supported for stable operation?

The device supports CEXT down to 10 pF with REXT = 5 kΩ at VCC ≥ 4.5 V, yielding ~20 ns typical pulse width. Below 10 pF, timing accuracy degrades due to parasitic capacitance dominance; Nexperia recommends ≥100 pF for production designs to ensure <5 % deviation across temperature and voltage.

How does the CLR pin function as both reset and trigger?

CLR performs asynchronous reset when driven LOW, forcing Q LOW immediately. Due to internal gating, a HIGH-going edge on CLR also triggers the monostable - enabling single-pin wake-up/reset functionality. This dual mode is confirmed in Table 4 (Function Table) and Fig. 2 (Logic Diagram).

Can this device operate reliably at 1.65 V supply with full timing specification?

Yes - all dynamic parameters including t_pd (up to 17.6 ns), t_W (down to 1.4 μs), and input thresholds are fully characterized at 1.65 V. Static characteristics (VOH/VOL) and hysteresis remain valid across the entire 1.65–5.5 V range per Tables 6–8.

Is there a recommended layout practice for the REXT/CEXT network?

Place CEXT close to pin 6 (CEXT) and REXT between pins 6 and 7 (REXT/CEXT), minimizing trace length and avoiding routing near noisy signals. Use 1 % tolerance C0G/NP0 capacitors and 1 % metal-film resistors; avoid ceramic types with DC bias drift. Ground plane beneath timing nodes improves stability against EMI.

74LVC1G123DP-Q100H Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74LVC

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Monostable

Independent Circuits:: 1

Schmitt Trigger Input:: Yes

Propagation Delay:: 12 ns

Current - Output High, Low:: 32mA, 32mA

Voltage - Supply:: 1.65 V ~ 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

74LVC1G123DP-Q100H FAQ

1.How can I place an order for 74LVC1G123DP-Q100H through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVC1G123DP-Q100H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74LVC1G123DP-Q100H reliable?

The price and inventory of 74LVC1G123DP-Q100H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G123DP-Q100H is usually 5 days.

3.What payment methods are accepted for 74LVC1G123DP-Q100H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G123DP-Q100H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVC1G123DP-Q100H?

74LVC1G123DP-Q100H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVC1G123DP-Q100H order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74LVC1G123DP-Q100H?

For technical support, including 74LVC1G123DP-Q100H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G123DP-Q100H requirements.

6.How does Aetrix verify that 74LVC1G123DP-Q100H is sourced from the original manufacturer or authorized distributors?

All 74LVC1G123DP-Q100H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LVC1G123DP-Q100H meets industry standards.

7.What is the process for return or replacement of 74LVC1G123DP-Q100H?

All 74LVC1G123DP-Q100H units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G123DP-Q100H, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74LVC1G123DP-Q100H part is unused and in its original packaging.

Return procedure for 74LVC1G123DP-Q100H:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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