component
NE555MM
Public Made by Adomby adom
HGSEMI Timers / Counters, MSOP-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
markdownNE555MM
HGSEMI · Timers / Counters · MSOP-8
NE555MM from HGSEMI, in a MSOP-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 | GND | power_in | Ground. |
| 2 | RTIG | input | Trigger input; trigger voltage is 1.67 V typ at VCC=5V and 5 V typ at VCC=15V. |
| 3 | OUT | output | Output; high-level voltage 2.75 V min at VCC=5V, IS=100mA, and low-level voltage 0.25 V typ at VCC=5V, ISINK=5mA is not stated as max. |
| 4 | R | input | Reset input; reset voltage 0.4 V min, 0.5 V typ, 1 V max. |
| 5 | CONTRIG | passive | Control voltage (trigger control) pin; control voltage is 10 V typ at VCC=15V and 3.33 V typ at VCC=5V. |
| 6 | CONTH | input | Threshold input (threshold control); threshold voltage is 0.667*VCC. |
| 7 | DIS | passive | Discharge pin; leakage current 20 nA typ (100 nA max) when output high, saturation voltage 180 mV at VCC=15V, I7=15mA. |
| 8 | VCC | power_in | Supply voltage pin; operating range 4.5 V to 16 V, absolute maximum 18 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | MSOP-8 |
| Category | Clock/Timing |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 18 | V | 3 | |||
| Operating ambient temperature (NE555 grade) | Tamb | 0 | 70 | ℃ | NE555 grade | 3 | |
| Storage temperature | Tstg | -65 | 150 | ℃ | 3 | ||
| Lead temperature (soldering) | TLEAD | 260 | ℃ | soldering 10s | 3 | ||
| Supply voltage | VCC | 4.5 | 16 | V | 4 | ||
| Quiescent current | IQ | 3 | 6 | mA | VCC=5V, RL=∞ | 4 | |
| Quiescent current | IQ | 10 | 15 | mA | VCC=15V, RL=∞ | 4 | |
| Threshold current | ITH | 0.1 | 0.25 | uA | 4 | ||
| Trigger current | ITR | 0.5 | 2 | uA | 4 | ||
| Reset voltage | VR | 0.4 | 0.5 | 1 | V | 4 | |
| Reset current | IR | 0.1 | 0.4 | mA | 4 | ||
| Control voltage | VCON | 9 | 10 | 11 | V | VCC=15V | 4 |
| Control voltage | VCON | 2.6 | 3.33 | 4 | V | VCC=5V | 4 |
| Pin 7 leakage current (output high) | I7(IEAK) | 20 | 100 | nA | output high | 4 | |
| Pin 7 saturation voltage (output low) | V7(SAT) | 80 | 200 | mV | Vcc=4.5V, I7=4.5mA | 4 | |
| Output high voltage | VOH | 12.75 | 13.3 | V | VCC=15V, IS=100mA | 4 | |
| Output high voltage | VOH | 2.75 | 3.3 | V | VCC=5V, IS=100mA | 4 | |
| Output low voltage | VOL | 0.1 | 0.25 | V | VCC=15V, ISINK=10mA | 4 | |
| Output low voltage | VOL | 0.4 | 0.75 | V | VCC=15V, ISINK=50mA | 4 | |
| Output low voltage | VOL | 2 | 2.5 | V | VCC=15V, ISINK=100mA | 4 | |
| Output low voltage | VOL | 0.25 | 0.35 | V | VCC=5V, ISINK=5mA | 4 | |
| Threshold voltage | VTH | 0.667 | *Vcc | 4 | |||
| Trigger voltage | VTR | 5 | V | VCC=15V | 4 | ||
| Trigger voltage | VTR | 1.67 | V | VCC=5V | 4 | ||
| Pin 7 saturation voltage (output low) | V7(SAT) | 180 | mV | Vcc=15V, I7=15mA | 4 | ||
| Output high voltage | VOH | 12.5 | V | VCC=15V, IS=200mA | 4 | ||
| Output low voltage | VOL | 2.5 | V | VCC=15V, ISINK=200mA | 4 | ||
| Output rise time | tr | 100 | nS | 4 | |||
| Output fall time | tf | 100 | nS | 4 | |||
| Initial timing accuracy (monostable) | ΔtE | 1 | % | monostable; RA,RB=1~100k; C=0.1 uF; VCC=5V(15V) | 4 | ||
| Timing drift vs temperature (monostable) | ΔtT | 50 | ppm/℃ | 4 | |||
| Timing drift vs voltage (monostable) | ΔtV | 0.1 | %/V | 4 | |||
| Timing accuracy over operating temperature range (monostable) | ΔtOPr | 1.5 | % | 4 | |||
| Initial timing accuracy (astable) | ΔtE1 | 2.25 | % | astable; RA,RB=1~100k; C=0.1 uF; Vcc=5V(15V) | 4 | ||
| Timing drift vs temperature (astable) | ΔtT1 | 150 | ppm/℃ | 4 | |||
| Timing drift vs voltage (astable) | ΔtV1 | 0.3 | %/V | 4 | |||
| Timing accuracy over operating temperature range (astable) | ΔtOpr1 | 3 | % | 4 |
CAD (KiCad official)
- Symbol:
NE555MM - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ne555mm-etched.step/ne555mm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ne555mm.step/ne555mm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (12 pp, sha256
aeacc0a1e25195ab, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).