component
MC74HC126ADTR2G
Public Made by Adomby adom
onsemi Logic ICs, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
MC74HC126ADTR2G
onsemi · Logic ICs · TSSOP-14
MC74HC126ADTR2G from onsemi, in a TSSOP-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 | OE1 | input | Active-high output enable for buffer 1 on the HC126A; when low, output Y1 is high impedance. |
| 2 | A1 | input | Data input for noninverting buffer 1; unused inputs must be tied to GND or VCC. |
| 3 | Y1 | output | 3-state noninverting buffer output 1, high impedance when OE1 is low. |
| 4 | OE2 | input | Active-high output enable for buffer 2 on the HC126A; when low, output Y2 is high impedance. |
| 5 | A2 | input | Data input for noninverting buffer 2; unused inputs must be tied to GND or VCC. |
| 6 | Y2 | output | 3-state noninverting buffer output 2, high impedance when OE2 is low. |
| 7 | GND | power_in | Ground reference for all voltages; voltages are referenced to GND. |
| 8 | Y3 | output | 3-state noninverting buffer output 3, high impedance when OE3 is low. |
| 9 | A3 | input | Data input for noninverting buffer 3; unused inputs must be tied to GND or VCC. |
| 10 | OE3 | input | Active-high output enable for buffer 3 on the HC126A; when low, output Y3 is high impedance. |
| 11 | Y4 | output | 3-state noninverting buffer output 4, high impedance when OE4 is low. |
| 12 | A4 | input | Data input for noninverting buffer 4; unused inputs must be tied to GND or VCC. |
| 13 | OE4 | input | Active-high output enable for buffer 4 on the HC126A; when low, output Y4 is high impedance. |
| 14 | VCC | power_in | Positive supply, 2.0 V to 6.0 V referenced to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-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 |
|---|---|---|---|---|---|---|---|
| DC Supply Voltage | VCC | -0.5 | 7 | V | Referenced to GND | 2 | |
| DC Input Voltage | Vin | -0.5 | V | Referenced to GND; upper limit printed as VCC + 0.5 | 2 | ||
| DC Output Voltage | Vout | -0.5 | V | Referenced to GND; upper limit printed as VCC + 0.5 | 2 | ||
| DC Input Current, per Pin | Iin | -20 | 20 | mA | Per pin | 2 | |
| DC Output Current, per Pin | Iout | -35 | 35 | mA | Per pin | 2 | |
| DC Supply Current, VCC and GND Pins | ICC | -75 | 75 | mA | VCC and GND pins | 2 | |
| Power Dissipation in Still Air | PD | 450 | mW | TSSOP package, still air; derate -6.1 mW/C from 65 to 125C | 2 | ||
| Storage Temperature | Tstg | -65 | 150 | C | 2 | ||
| Lead Temperature | TL | 260 | C | 1 mm from case for 10 seconds (SOIC or TSSOP package) | 2 | ||
| DC Supply Voltage | VCC | 2 | 6 | V | Referenced to GND | 2 | |
| DC Input Voltage, Output Voltage | Vin, Vout | 0 | V | Referenced to GND; upper limit printed as VCC | 2 | ||
| Operating Temperature, All Package Types | TA | -55 | 125 | C | 2 | ||
| Input Rise and Fall Time | tr, tf | 0 | 1000 | ns | VCC = 2.0 V (Figure 1) | 2 | |
| Input Rise and Fall Time | tr, tf | 0 | 500 | ns | VCC = 4.5 V (Figure 1) | 2 | |
| Input Rise and Fall Time | tr, tf | 0 | 400 | ns | VCC = 6.0 V (Figure 1) | 2 | |
| Minimum High-Level Input Voltage | VIH | 1.5 | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 | ||
| Minimum High-Level Input Voltage | VIH | 2.1 | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 3.0 V; 125 C column | 3 | ||
| Minimum High-Level Input Voltage | VIH | 3.15 | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 4.5 V; 125 C column | 3 | ||
| Minimum High-Level Input Voltage | VIH | 4.2 | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 6.0 V; 125 C column | 3 | ||
| Maximum Low-Level Input Voltage | VIL | 0.5 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 | ||
| Maximum Low-Level Input Voltage | VIL | 0.9 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 3.0 V; 125 C column | 3 | ||
| Maximum Low-Level Input Voltage | VIL | 1.35 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 4.5 V; 125 C column | 3 | ||
| Maximum Low-Level Input Voltage | VIL | 1.8 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 6.0 V; 125 C column | 3 | ||
| Minimum High-Level Output Voltage | VOH | 1.9 | V | Vin = VIH; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 | ||
| Minimum High-Level Output Voltage | VOH | 4.4 | V | Vin = VIH; /Iout/ <= 20 uA; VCC = 4.5 V; 125 C column | 3 | ||
| Minimum High-Level Output Voltage | VOH | 5.9 | V | Vin = VIH; /Iout/ <= 20 uA; VCC = 6.0 V; 125 C column | 3 | ||
| Minimum High-Level Output Voltage | VOH | 2.2 | V | Vin = VIH; /Iout/ <= 3.6 mA; VCC = 3.0 V; 125 C column | 3 | ||
| Minimum High-Level Output Voltage | VOH | 3.7 | V | Vin = VIH; /Iout/ <= 6.0 mA; VCC = 4.5 V; 125 C column | 3 | ||
| Minimum High-Level Output Voltage | VOH | 5.2 | V | Vin = VIH; /Iout/ <= 7.8 mA; VCC = 6.0 V; 125 C column | 3 | ||
| Maximum Low-Level Output Voltage | VOL | 0.1 | V | Vin = VIL; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 | ||
| Maximum Low-Level Output Voltage | VOL | 0.4 | V | Vin = VIL; /Iout/ <= 3.6 mA; VCC = 3.0 V; 125 C column | 3 | ||
| Maximum Input Leakage Current | Iin | -1 | 1 | uA | Vin = VCC or GND; VCC = 6.0 V; 125 C column | 3 | |
| Maximum Three-State Leakage Current | IOZ | -10 | 10 | uA | Output in high-impedance state; Vin = VIL or VIH; Vout = VCC or GND; VCC = 6.0 V; 125 C column | 3 | |
| Maximum Quiescent Supply Current (per Package) | ICC | 160 | uA | Vin = VCC or GND; Iout = 0 uA; VCC = 6.0 V; 125 C column | 3 | ||
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | 135 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | 60 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | 27 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | 23 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | 180 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | 80 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | 36 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | 31 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | 135 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | 60 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | 27 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | 23 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 2 and 4; 125 C column | 3 | ||
| Maximum Output Transition Time, Any Output | tTLH, tTHL | 90 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Output Transition Time, Any Output | tTLH, tTHL | 34 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Output Transition Time, Any Output | tTLH, tTHL | 18 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Output Transition Time, Any Output | tTLH, tTHL | 15 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 1 and 3; 125 C column | 3 | ||
| Maximum Input Capacitance | Cin | 10 | pF | 3 | |||
| Maximum 3-State Output Capacitance | Cout | 15 | pF | Output in high-impedance state | 3 | ||
| Power Dissipation Capacitance (Per Buffer) | CPD | 30 | pF | Typical @ 25C, VCC = 5.0 V | 3 |
CAD (KiCad official)
- Symbol:
MC74HC126ADTR2G - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
mc74hc126adtr2g-etched.step/mc74hc126adtr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc74hc126adtr2g.step/mc74hc126adtr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (9 pp, sha256
7fc74019b728976b, retrieved 2026-10-27, tier: manufacturer) - 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).
# MC74HC126ADTR2G
**onsemi** · Logic ICs · TSSOP-14
MC74HC126ADTR2G from onsemi, in a TSSOP-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 | OE1 | input | Active-high output enable for buffer 1 on the HC126A; when low, output Y1 is high impedance. |
| 2 | A1 | input | Data input for noninverting buffer 1; unused inputs must be tied to GND or VCC. |
| 3 | Y1 | output | 3-state noninverting buffer output 1, high impedance when OE1 is low. |
| 4 | OE2 | input | Active-high output enable for buffer 2 on the HC126A; when low, output Y2 is high impedance. |
| 5 | A2 | input | Data input for noninverting buffer 2; unused inputs must be tied to GND or VCC. |
| 6 | Y2 | output | 3-state noninverting buffer output 2, high impedance when OE2 is low. |
| 7 | GND | power_in | Ground reference for all voltages; voltages are referenced to GND. |
| 8 | Y3 | output | 3-state noninverting buffer output 3, high impedance when OE3 is low. |
| 9 | A3 | input | Data input for noninverting buffer 3; unused inputs must be tied to GND or VCC. |
| 10 | OE3 | input | Active-high output enable for buffer 3 on the HC126A; when low, output Y3 is high impedance. |
| 11 | Y4 | output | 3-state noninverting buffer output 4, high impedance when OE4 is low. |
| 12 | A4 | input | Data input for noninverting buffer 4; unused inputs must be tied to GND or VCC. |
| 13 | OE4 | input | Active-high output enable for buffer 4 on the HC126A; when low, output Y4 is high impedance. |
| 14 | VCC | power_in | Positive supply, 2.0 V to 6.0 V referenced to GND. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-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 |
|---|---|---|---|---|---|---|---|
| DC Supply Voltage | VCC | -0.5 | | 7 | V | Referenced to GND | 2 |
| DC Input Voltage | Vin | -0.5 | | | V | Referenced to GND; upper limit printed as VCC + 0.5 | 2 |
| DC Output Voltage | Vout | -0.5 | | | V | Referenced to GND; upper limit printed as VCC + 0.5 | 2 |
| DC Input Current, per Pin | Iin | -20 | | 20 | mA | Per pin | 2 |
| DC Output Current, per Pin | Iout | -35 | | 35 | mA | Per pin | 2 |
| DC Supply Current, VCC and GND Pins | ICC | -75 | | 75 | mA | VCC and GND pins | 2 |
| Power Dissipation in Still Air | PD | | | 450 | mW | TSSOP package, still air; derate -6.1 mW/C from 65 to 125C | 2 |
| Storage Temperature | Tstg | -65 | | 150 | C | | 2 |
| Lead Temperature | TL | | | 260 | C | 1 mm from case for 10 seconds (SOIC or TSSOP package) | 2 |
| DC Supply Voltage | VCC | 2 | | 6 | V | Referenced to GND | 2 |
| DC Input Voltage, Output Voltage | Vin, Vout | 0 | | | V | Referenced to GND; upper limit printed as VCC | 2 |
| Operating Temperature, All Package Types | TA | -55 | | 125 | C | | 2 |
| Input Rise and Fall Time | tr, tf | 0 | | 1000 | ns | VCC = 2.0 V (Figure 1) | 2 |
| Input Rise and Fall Time | tr, tf | 0 | | 500 | ns | VCC = 4.5 V (Figure 1) | 2 |
| Input Rise and Fall Time | tr, tf | 0 | | 400 | ns | VCC = 6.0 V (Figure 1) | 2 |
| Minimum High-Level Input Voltage | VIH | 1.5 | | | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 |
| Minimum High-Level Input Voltage | VIH | 2.1 | | | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 3.0 V; 125 C column | 3 |
| Minimum High-Level Input Voltage | VIH | 3.15 | | | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 4.5 V; 125 C column | 3 |
| Minimum High-Level Input Voltage | VIH | 4.2 | | | V | Vout = VCC - 0.1 V; /Iout/ <= 20 uA; VCC = 6.0 V; 125 C column | 3 |
| Maximum Low-Level Input Voltage | VIL | | | 0.5 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 |
| Maximum Low-Level Input Voltage | VIL | | | 0.9 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 3.0 V; 125 C column | 3 |
| Maximum Low-Level Input Voltage | VIL | | | 1.35 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 4.5 V; 125 C column | 3 |
| Maximum Low-Level Input Voltage | VIL | | | 1.8 | V | Vout = 0.1 V; /Iout/ <= 20 uA; VCC = 6.0 V; 125 C column | 3 |
| Minimum High-Level Output Voltage | VOH | 1.9 | | | V | Vin = VIH; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 |
| Minimum High-Level Output Voltage | VOH | 4.4 | | | V | Vin = VIH; /Iout/ <= 20 uA; VCC = 4.5 V; 125 C column | 3 |
| Minimum High-Level Output Voltage | VOH | 5.9 | | | V | Vin = VIH; /Iout/ <= 20 uA; VCC = 6.0 V; 125 C column | 3 |
| Minimum High-Level Output Voltage | VOH | 2.2 | | | V | Vin = VIH; /Iout/ <= 3.6 mA; VCC = 3.0 V; 125 C column | 3 |
| Minimum High-Level Output Voltage | VOH | 3.7 | | | V | Vin = VIH; /Iout/ <= 6.0 mA; VCC = 4.5 V; 125 C column | 3 |
| Minimum High-Level Output Voltage | VOH | 5.2 | | | V | Vin = VIH; /Iout/ <= 7.8 mA; VCC = 6.0 V; 125 C column | 3 |
| Maximum Low-Level Output Voltage | VOL | | | 0.1 | V | Vin = VIL; /Iout/ <= 20 uA; VCC = 2.0 V; 125 C column | 3 |
| Maximum Low-Level Output Voltage | VOL | | | 0.4 | V | Vin = VIL; /Iout/ <= 3.6 mA; VCC = 3.0 V; 125 C column | 3 |
| Maximum Input Leakage Current | Iin | -1 | | 1 | uA | Vin = VCC or GND; VCC = 6.0 V; 125 C column | 3 |
| Maximum Three-State Leakage Current | IOZ | -10 | | 10 | uA | Output in high-impedance state; Vin = VIL or VIH; Vout = VCC or GND; VCC = 6.0 V; 125 C column | 3 |
| Maximum Quiescent Supply Current (per Package) | ICC | | | 160 | uA | Vin = VCC or GND; Iout = 0 uA; VCC = 6.0 V; 125 C column | 3 |
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | | | 135 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | | | 60 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | | | 27 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Propagation Delay, Input A to Output Y | tPLH, tPHL | | | 23 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | | | 180 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | | | 80 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | | | 36 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPLZ, tPHZ | | | 31 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | | | 135 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | | | 60 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | | | 27 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Propagation Delay, Output Enable to Y | tPZL, tPZH | | | 23 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 2 and 4; 125 C column | 3 |
| Maximum Output Transition Time, Any Output | tTLH, tTHL | | | 90 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 2.0 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Output Transition Time, Any Output | tTLH, tTHL | | | 34 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 3.0 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Output Transition Time, Any Output | tTLH, tTHL | | | 18 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 4.5 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Output Transition Time, Any Output | tTLH, tTHL | | | 15 | ns | CL = 50 pF; Input tr = tf = 6.0 ns; VCC = 6.0 V; Figures 1 and 3; 125 C column | 3 |
| Maximum Input Capacitance | Cin | | | 10 | pF | | 3 |
| Maximum 3-State Output Capacitance | Cout | | | 15 | pF | Output in high-impedance state | 3 |
| Power Dissipation Capacitance (Per Buffer) | CPD | | 30 | | pF | Typical @ 25C, VCC = 5.0 V | 3 |
## CAD (KiCad official)
- Symbol: `MC74HC126ADTR2G`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `mc74hc126adtr2g-etched.step` / `mc74hc126adtr2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mc74hc126adtr2g.step` / `mc74hc126adtr2g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/mc74hc126adtr2-d.pdf) (9 pp, sha256 `7fc74019b728976b`, retrieved 2026-10-27, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/mc74hc126adtr2g-datasheet.pdf)