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MM74HCT14MX

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onsemi Logic ICs, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MM74HCT14MX

onsemi · Logic ICs · SOIC-14

MM74HCT14MX from onsemi, in a SOIC-14. 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 A1 input Schmitt trigger inverter 1 input, TTL-compatible threshold, max input current ±1.0µA over temperature.
2 Y1 output Inverter 1 output, drives 10 LS-TTL loads, VOL max 0.26V at 4.0mA at 25°C.
3 A2 input Schmitt trigger inverter 2 input, TTL-compatible threshold, max input current ±1.0µA over temperature.
4 Y2 output Inverter 2 output, drives 10 LS-TTL loads, VOL max 0.26V at 4.0mA at 25°C.
5 A3 input Schmitt trigger inverter 3 input, TTL-compatible threshold, max input current ±1.0µA over temperature.
6 Y3 output Inverter 3 output, drives 10 LS-TTL loads, VOL max 0.26V at 4.0mA at 25°C.
7 GND power_in Ground reference, 0V.
8 Y4 output Inverter 4 output, drives 10 LS-TTL loads, VOL max 0.26V at 4.0mA at 25°C.
9 A4 input Schmitt trigger inverter 4 input, TTL-compatible threshold, max input current ±1.0µA over temperature.
10 Y5 output Inverter 5 output, drives 10 LS-TTL loads, VOL max 0.26V at 4.0mA at 25°C.
11 A5 input Schmitt trigger inverter 5 input, TTL-compatible threshold, max input current ±1.0µA over temperature.
12 Y6 output Inverter 6 output, drives 10 LS-TTL loads, VOL max 0.26V at 4.0mA at 25°C.
13 A6 input Schmitt trigger inverter 6 input, TTL-compatible threshold, max input current ±1.0µA over temperature.
14 VCC power_in Positive supply, 4.5V to 5.5V recommended, absolute maximum 7.0V.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-14
Category Logic ICs
Pins 14

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 (absolute maximum) VCC -0.5 7 V 4
DC Input Voltage (absolute maximum) VIN -1.5 V max printed as VCC +1.5 V 4
DC Output Voltage (absolute maximum) VOUT -0.5 V max printed as VCC +0.5 V 4
Clamp Diode Current IK, IOK -20 20 mA 4
DC Output Current, Per Pin IOUT -25 25 mA 4
DC VCC or GND Current, Per Pin ICC -50 50 mA 4
Storage Temperature Range TSTG -65 150 °C 4
Lead Temperature (Soldering) TL 260 °C Soldering 10 seconds 4
Supply Voltage (recommended) VCC 4.5 5.5 V 4
DC Input or Output Voltage (recommended) VIN, VOUT 0 V max printed as VCC 4
Operating Temperature Range TA -40 85 °C 4
Positive-Going Threshold Voltage, minimum VT+ 1.2 1.5 V VCC=4.5V, TA=+25°C 5
Positive-Going Threshold Voltage, minimum VT+ 1.4 1.7 V VCC=5.5V, TA=+25°C 5
Positive-Going Threshold Voltage, maximum VT+ 1.5 1.9 V VCC=4.5V, TA=+25°C 5
Positive-Going Threshold Voltage, maximum VT+ 1.7 2.1 V VCC=5.5V, TA=+25°C 5
Negative-Going Threshold Voltage, minimum VT- 0.5 0.9 V VCC=4.5V, TA=+25°C 5
Negative-Going Threshold Voltage, minimum VT- 0.6 1 V VCC=5.5V, TA=+25°C 5
Negative-Going Threshold Voltage, maximum VT- 0.9 1.2 V VCC=4.5V, TA=+25°C 5
Negative-Going Threshold Voltage, maximum VT- 1 1.4 V VCC=5.5V, TA=+25°C 5
Hysteresis Voltage, minimum VH 0.4 0.6 V VCC=4.5V, TA=+25°C 5
Hysteresis Voltage, minimum VH 0.4 0.7 V VCC=5.5V, TA=+25°C 5
Hysteresis Voltage, maximum VH 0.6 1.4 V VCC=4.5V, TA=+25°C 5
Hysteresis Voltage, maximum VH 0.7 1.5 V VCC=5.5V, TA=+25°C 5
Minimum HIGH Level Output Voltage VOH 3.98 4.2 V VIN=VIL, /IOUT/=4.0mA, VCC=4.5V, TA=+25°C 5
Minimum HIGH Level Output Voltage VOH 3.84 4.2 V VIN=VIL, /IOUT/=4.0mA, VCC=4.5V, TA=-40°C to +85°C 5
Minimum HIGH Level Output Voltage VOH 4.98 5.2 V VIN=VIL, /IOUT/=4.8mA, VCC=5.5V, TA=+25°C 5
Maximum LOW Level Output Voltage VOL 0 0.1 V VIN=VIL, /IOUT/=20µA, VCC=4.5V, TA=+25°C 5
Maximum LOW Level Output Voltage VOL 0.2 0.26 V VIN=VIL, /IOUT/=4.0mA, VCC=4.5V, TA=+25°C 5
Maximum LOW Level Output Voltage VOL 0.2 0.33 V VIN=VIL, /IOUT/=4.0mA, VCC=4.5V, TA=-40°C to +85°C 5
Maximum Input Current IIN -1 0.1 1 µA VIN=VCC or GND, VIH or VIL, VCC=5.5V 5
Maximum Quiescent Supply Current ICC 1 10 µA VIN=VCC or GND, IOUT=0µA, VCC=5.5V 5
Maximum Quiescent Supply Current (TTL input level) ICC 2.4 mA VIN=2.4V or 0.5V 5
Maximum Propagation Delay tPHL, tPLH 10 18 ns VCC=5V, TA=+25°C, CL=15pF, tr=tf=6ns 6
Maximum Propagation Delay tPHL, tPLH 20 25 ns VCC=5V±10%, CL=50pF, tr=tf=6ns 6
Maximum Output Rise and Fall Time tTLH, tTHL 9 15 ns VCC=5V±10%, CL=50pF, tr=tf=6ns, TA=+25°C 6
Maximum Output Rise and Fall Time tTLH, tTHL 9 19 ns VCC=5V±10%, CL=50pF, tr=tf=6ns, TA=-40°C to +85°C 6
Maximum Input Capacitance CIN 5 10 pF 6

CAD (KiCad official)

  • Symbol: MM74HCT14MX
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOIC-14 (KiCad packages3D, STEP)
  • 3D model files: mm74hct14mx-etched.step / mm74hct14mx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mm74hct14mx.step / mm74hct14mx.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (10 pp, sha256 93b1688f9fdd204b, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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).

Datasheet PDF