component
MC34161DG
Public Made by Adomby adom
onsemi Monitors & Reset Circuits, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMC34161DG
onsemi · Monitors & Reset Circuits · SOIC-8
MC34161DG from onsemi, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Vref | power_out | Pinned-out 2.54 V reference (2.48 to 2.60 V at 25°C) with short-circuit protection, able to source more than 2.0 mA, used for negative voltage sensing and Mode Select programming. |
| 2 | Input 1 | input | Channel 1 comparator input with 1.27 V threshold and 25 mV hysteresis, input range -1.0 to +40 V. |
| 3 | Input 2 | input | Channel 2 comparator input with 1.27 V threshold and 25 mV hysteresis, input range -1.0 to +40 V. |
| 4 | GND | power_in | Ground pin for the device. |
| 5 | Output 2 | output | Channel 2 open-collector output, sink current up to 20 mA maximum and output voltage up to 40 V. |
| 6 | Output 1 | output | Channel 1 open-collector output, sink current up to 20 mA maximum and output voltage up to 40 V. |
| 7 | Mode Select | input | Tristate Mode Select input (GND, Vref, or VCC above 2.9 V) setting each channel as inverting or noninverting. |
| 8 | VCC | power_in | Positive supply input, 2.0 V minimum for positive sensing and 4.0 V for negative sensing, 40 V maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | Power Management ICs |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Power Supply Input Voltage | VCC | 40 | V | 2 | |||
| Comparator Input Voltage Range | Vin | -1 | 40 | V | 2 | ||
| Comparator Output Sink Current | ISink | 20 | mA | Pins 5 and 6 | 2 | ||
| Comparator Output Voltage | Vout | 40 | V | 2 | |||
| Maximum Power Dissipation, D Suffix | PD | 450 | mW | TA = 70°C | 2 | ||
| Thermal Resistance, Junction-to-Air, D Suffix | RθJA | 178 | °C/W | Case 751 | 2 | ||
| Operating Junction Temperature | TJ | 150 | °C | 2 | |||
| Operating Ambient Temperature MC34161 | TA | 0 | 70 | °C | MC34161 | 2 | |
| Storage Temperature Range | Tstg | -55 | 150 | °C | 2 | ||
| Threshold Voltage, Vin Increasing | Vth | 1.245 | 1.27 | 1.295 | V | TA = 25°C | 3 |
| Threshold Voltage, Vin Increasing | Vth | 1.235 | 1.295 | V | TA = Tmin to Tmax | 3 | |
| Threshold Voltage Variation | Vth | 7 | 15 | mV | VCC = 2.0 V to 40 V | 3 | |
| Threshold Hysteresis, Vin Decreasing | VH | 15 | 25 | 35 | mV | 3 | |
| Threshold Difference /Vth1 − Vth2/ | VD | 1 | 15 | mV | 3 | ||
| Reference to Threshold Difference | VRTD | 1.2 | 1.27 | 1.32 | V | (Vref − Vin1), (Vref − Vin2) | 3 |
| Input Bias Current | IIB | 40 | 200 | nA | Vin = 1.0 V | 3 | |
| Input Bias Current | IIB | 85 | 400 | nA | Vin = 1.5 V | 3 | |
| Mode Select Threshold Voltage Channel 1 | Vth(CH 1) | 0.15 | 0.23 | 0.3 | V | Vref+ offset (Figure 6) | 3 |
| Mode Select Threshold Voltage Channel 2 | Vth(CH 2) | 0.3 | 0.63 | 0.9 | V | Figure 6 | 3 |
| Output Sink Saturation Voltage | VOL | 0.05 | 0.3 | V | ISink = 2.0 mA | 3 | |
| Output Sink Saturation Voltage | VOL | 0.22 | 0.6 | V | ISink = 10 mA | 3 | |
| Output Sink Saturation Voltage | VOL | 0.02 | 0.2 | V | ISink = 0.25 mA, VCC = 1.0 V | 3 | |
| Off-State Leakage Current | IOH | 0 | 1 | A | VOH = 40 V | 3 | |
| Reference Output Voltage | Vref | 2.48 | 2.54 | 2.6 | V | IO = 0 mA, TA = 25°C | 3 |
| Load Regulation | Regload | 0.6 | 15 | mV | IO = 0 mA to 2.0 mA | 3 | |
| Line Regulation | Regline | 5 | 15 | mV | VCC = 4.0 V to 40 V | 3 | |
| Total Output Variation over Line, Load, and Temperature | Vref | 2.45 | 2.6 | V | 3 | ||
| Short Circuit Current | ISC | 8.5 | 30 | mA | 3 | ||
| Power Supply Current | ICC | 450 | 700 | A | VMode, Vin1, Vin2 = GND, VCC = 5.0 V | 3 | |
| Power Supply Current | ICC | 560 | 900 | A | VMode, Vin1, Vin2 = GND, VCC = 40 V | 3 | |
| Operating Voltage Range (Positive Sensing) | VCC | 2 | 40 | V | Positive Sensing | 3 | |
| Operating Voltage Range (Negative Sensing) | VCC | 4 | 40 | V | Negative Sensing | 3 |
CAD (KiCad official)
- Symbol:
MC34161DG - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mc34161dg-etched.step/mc34161dg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc34161dg.step/mc34161dg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (18 pp, sha256
ba7e5988c1519f46, retrieved 2026-10-31, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).