74LVC1G07GW-Q100 Datasheet Deep Dive: Pinout & Key Specs

8 February 2026 0

Comprehensive technical analysis of the automotive-grade single non-inverting buffer with open-drain output.

The 74LVC1G07GW-Q100 is a single non-inverting buffer with an open-drain output designed for mixed-voltage systems and demanding environments. Key datasheet figures frame its usefulness: wide VCC support from 1.65–5.5 V, very low standby ICC in the microampere range, open-drain output capable of sourcing external pull-ups and sinking up to ~32 mA, and an extended ambient rating down to −40°C and up to +125°C for automotive-grade robustness. This article walks through the 74LVC1G07GW-Q100 datasheet to explain pinout, electrical characteristics, integration tips, and troubleshooting guidance for practical designs.

Readers will get a pin-by-pin description, package and soldering notes, DC and AC parameter interpretation, layout and pull-up resistor guidance, thermal and qualification considerations, plus a compact pre-deployment checklist. The aim is practical application: selecting pull-ups and decoupling, estimating timing with given propagation delays and capacitive loads, and avoiding common pitfalls when the part is used as a level-shifting open-drain buffer on shared buses.

Background & Device Overview

74LVC1G07GW-Q100 Technical Overview

Core Functionality

The part is a single non-inverting buffer with an open-drain output used to gate and isolate logic signals. The open-drain topology means the device actively pulls the line low but relies on an external pull-up for a defined high level. This enables wire-OR logic, level translation between different VCC domains, and shared-bus operation.

Key Selling Points

The datasheet highlights low-voltage operation, broad VCC range, and automotive-level qualification. Typical ICC in standby is in the microampere class, and IO sink capability approaches several tens of milliamps. Q100-style qualification implies extra screening and extended-temperature robustness.

Pinout & Package Details

Pin-by-Pin Description

The five-pin package pin mapping is straightforward: VCC, GND, input (A), output (Y open-drain), and any NC or substrate ties as specified. For documentation and PCB silkscreen, ensure the orientation notch is clearly identified to prevent assembly errors.

Pin Number Symbol Description
1 A Data Input
2 GND Ground (0 V)
3 NC / n.c. Not Connected
4 Y Open-Drain Output
5 VCC Supply Voltage

Electrical Characteristics: DC and AC Specs

Operating Voltage Visualization (VCC)

1.65V - 5.5V Range
0V
10V

Before selection, verify supply range, absolute-max ratings, logic thresholds, and leakage. Operating VCC is 1.65–5.5 V; absolute max VCC and thermal limits must be respected. When using pull-ups, remember the added RC time constant from the resistor and bus capacitance slows edges; select pull-ups to balance required edge speed and static current.

Integration & Design Recommendations

⚡ Power & Layout

  • • Use a 0.1 μF ceramic decoupling capacitor close to the VCC pin.
  • • Keep input and output traces as short as possible.
  • • Route sensitive lines away from high-current traces.

🔗 Pull-up Selection

Pull-ups define high-level voltage and edge speed. Use R = (VCC − VOL_max)/I_pull as a guide.

Typical Values:
• 10 kΩ – 100 kΩ: Low power, static logic
• 2.2 kΩ – 10 kΩ: High speed (3.3V/5V)

Thermal & Automotive Reliability

Calculate power dissipation (Pd = ICC*VCC + Iout*Vdrop) to assess thermal margin. For automotive applications, the Q100-style qualification implies additional screening and suitability for extended temperature ranges. Account for extended temp drift in thresholds and possibly tighter derating for long-life reliability in harsh environments.

Testing & Troubleshooting Checklist

Common Issues

  • ❌ No output (Missing pull-up)
  • ❌ Slow edges (High bus capacitance)
  • ❌ High current (IO limit exceeded)

Pre-Deployment Checklist

  • ✅ Verify pin 1 orientation
  • ✅ Confirm VCC is 1.65V-5.5V
  • ✅ Validate pull-up resistor value

Summary

The 74LVC1G07GW-Q100 is a compact open-drain single buffer ideal for level translation, shared-bus designs, and low-power systems where small packages and automotive-grade robustness are required. Critical items to watch are the VCC operating range, correct pull-up strategy, and the IO sink limits under worst-case scenarios. For integration, prioritize local decoupling, short trace runs, and calculated pull-up choices that balance rise time against static current. Consult the manufacturer datasheet for final sign-off and validate with a prototype run before volume release.

Open-Drain Logic
AEC-Q100 Qualified
1.65V - 5.5V

Common Questions (FAQ)

What are the key limits listed in the 74LVC1G07GW-Q100 datasheet? +
The datasheet lists the operating VCC range (1.65–5.5 V), absolute maximum ratings, typical standby ICC in microamperes, IO sink capability up to roughly 32 mA, VIH/VIL thresholds, and propagation delays under specified loads. Use those figures to verify logic compatibility and thermal margins.
How do I choose the right pull-up resistor? +
Select R so that R = (VCC − VOL_max) / I_pull where I_pull is the desired sink current. For 3.3 V buses, 2.2 kΩ–10 kΩ balances speed and power; for 5 V use lower values for faster edges. Account for bus capacitance when finalizing the value.
What are the fastest troubleshooting steps if the output is inactive? +
First verify VCC and GND are present, confirm a pull-up resistor is installed and connected, probe the input for valid thresholds, and inspect for soldering errors. If edges are slow, reduce the pull-up resistance or check for excessive bus capacitance.
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Implementation Guide: PCB Integration & Application Circuit Tips Typical application circuit and layout best practices Point: The canonical single-cell application uses a sense resistor, back-to-back MOSFETs and bypass paths for charge/discharge. Evidence: Application diagrams place the sense resistor between V- and pack negative with MOSFETs controlled by gate-driver pins. Explanation: Layout priorities are short sense traces, ground-return segregation, and placing decoupling close to BAT; ensure wide copper for current paths and thermal vias under the exposed pad for heat spreading. Component selection: MOSFETs, sense resistors, and external filtering Point: Choose MOSFETs and sense resistors to balance conduction loss and detection resolution. Evidence: Datasheet timing and threshold behavior depend on the voltage drop across the sense resistor and FET Rds(on). Explanation: Use low Rds(on) FETs with adequate Vds margin and a sense resistor tolerance that preserves detection accuracy; add RC filtering only when needed to avoid slowing legitimate fault detection—verify with pulse tests. Use Cases, Troubleshooting & Quick Design Checklist Typical application scenarios & quick comparisons Point: Common targets include consumer handhelds, wearables and portable instruments where low part count and accurate thresholds matter. Explanation: For wearables prioritize lowest quiescent current and smallest footprint, while instruments may prioritize higher sustained discharge capability and thermal margin—select components accordingly. Troubleshooting flow & quick verification checklist ✔ confirm BAT/V- reference voltages ✔ log quiescent current ✔ apply calibrated pulses to validate timing ✔ inspect solder joints and thermal vias Summary 1 The S-8261AAG provides fine-grain voltage detection (3.9–4.5 V, 5 mV steps) and ≈±25 mV accuracy, enabling precise charger termination and tight protection margins for single-cell designs using this battery IC. 2 Integrated delay logic and MOSFET drive simplify BOM and reduce firmware complexity, but designers must validate trip timing with both pulse and continuous loads to avoid false trips. 3 Quiescent and leakage currents are low (µA-range typical), so long-term shelf drain is small if verified with extended logging; thermal vias and copper pour are critical for robustness. 4 Recommended next step: consult the official datasheet for exact tables and timing diagrams labeled “datasheet” and execute a short prototype test plan covering threshold validation and thermal soak. FAQ How does S-8261AAG handle charger termination and what datasheet items to verify? + The S-8261AAG uses fine voltage steps and accurate thresholds to detect full-charge; verify the threshold table and voltage accuracy entries in the datasheet, then test with a regulated charger and a precision meter. Confirm hysteresis and delay behavior to ensure stable termination without oscillation. What battery IC measurements should be captured during bring-up for S-8261AAG? + Key measurements include quiescent current over 24–72 hours, sense-resistor voltage drop under defined loads, trip timing for overcurrent events, and thermal rise during sustained discharge. Record each measurement with calibrated instruments and compare against datasheet typical/maximum values. How to debug frequent false trips with S-8261AAG? + Start by measuring the sense-node waveform with an oscilloscope during the event to distinguish pulses from sustained faults. Check layout for long sense traces, verify sense-resistor tolerance, and confirm delay settings. If needed, increase hysteresis or adjust the sense resistor and re-run pulse-vs-continuous tests to tune reliability.
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