component
MC74AC139DTR2G
Public Made by Adomby adom
onsemi Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
MC74AC139DTR2G
onsemi · Signal Switches, Multiplexers, Decoders · TSSOP-16
MC74AC139DTR2G from onsemi, in a TSSOP-16. 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 | Ea | input | Active-LOW enable for decoder a; when HIGH, all decoder a outputs (O0a-O3a) are forced HIGH, and it can be used as the data input for a 4-output demultiplexer. |
| 2 | A0a | input | Binary-weighted address input A0 for decoder a, with input voltage range 0 V to VCC. |
| 3 | A1a | input | Binary-weighted address input A1 for decoder a, with input voltage range 0 V to VCC. |
| 4 | O0a | output | Active-LOW, mutually exclusive output 0 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 5 | O1a | output | Active-LOW, mutually exclusive output 1 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 6 | O2a | output | Active-LOW, mutually exclusive output 2 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 7 | O3a | output | Active-LOW, mutually exclusive output 3 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 8 | GND | power_in | Ground reference for all input and output voltages (0 V reference). |
| 9 | O3b | output | Active-LOW, mutually exclusive output 3 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 10 | O2b | output | Active-LOW, mutually exclusive output 2 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 11 | O1b | output | Active-LOW, mutually exclusive output 1 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 12 | O0b | output | Active-LOW, mutually exclusive output 0 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 13 | A1b | input | Binary-weighted address input A1 for decoder b, with input voltage range 0 V to VCC. |
| 14 | A0b | input | Binary-weighted address input A0 for decoder b, with input voltage range 0 V to VCC. |
| 15 | Eb | input | Active-LOW enable for decoder b; when HIGH, all decoder b outputs (O0b-O3b) are forced HIGH, and it can be used as the data input for a 4-output demultiplexer. |
| 16 | VCC | power_in | Positive supply; 2.0 V to 6.0 V for 74AC and 4.5 V to 5.5 V for 74ACT recommended operating range (absolute maximum 0.5 V to 7.0 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-16 |
| Category | Logic |
| Pins | 16 |
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 (′AC) | VCC | 2 | 5 | 6 | V | 3 | |
| DC Input Voltage, Output Voltage (Ref. to GND) | VIN, VOUT | 0 | V | Ref. to GND; printed max is VCC | 3 | ||
| Input Rise and Fall Time ′AC (except Schmitt), VCC @ 3.0 V | tr, tf | 150 | ns/V | VCC @ 3.0 V | 3 | ||
| Input Rise and Fall Time ′AC (except Schmitt), VCC @ 4.5 V | tr, tf | 40 | ns/V | VCC @ 4.5 V | 3 | ||
| Input Rise and Fall Time ′AC (except Schmitt), VCC @ 5.5 V | tr, tf | 25 | ns/V | VCC @ 5.5 V | 3 | ||
| Junction Temperature (labelled PDIP in datasheet) | TJ | 140 | °C | (PDIP) | 3 | ||
| Operating Ambient Temperature Range | TA | -40 | 25 | 85 | °C | 3 | |
| Output Current − High | IOH | -24 | mA | 3 | |||
| Output Current − Low | IOL | 24 | mA | 3 | |||
| DC Supply Voltage | VCC | -0.5 | 7 | V | 3 | ||
| DC Input Voltage | VI | -0.5 | V | Upper limit printed as VCC + 0.5 V | 3 | ||
| DC Output Voltage | VO | -0.5 | V | Upper limit printed as VCC + 0.5 V (Note 1) | 3 | ||
| DC Input Diode Current | IIK | 20 | mA | 3 | |||
| DC Output Diode Current | IOK | 50 | mA | 3 | |||
| DC Output Sink/Source Current | IO | 50 | mA | 3 | |||
| DC Supply Current per Output Pin | ICC | 50 | mA | 3 | |||
| DC Ground Current per Output Pin | IGND | 50 | mA | 3 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 3 | ||
| Lead Temperature | TL | 260 | °C | 1 mm from case for 10 seconds | 3 | ||
| Junction Temperature under Bias | TJ | 150 | °C | 3 | |||
| Thermal Resistance, Junction-to-Ambient (TSSOP) | θJA | 103.8 | °C/W | TSSOP; per JESD51-7 (Note 2) | 3 | ||
| Power Dissipation in Still Air at 65°C (TSSOP) | PD | 500 | mW | TSSOP; still air at 65°C (Note 3) | 3 | ||
| ESD Withstand Voltage, Human Body Model | VESD | 2000 | V | Human Body Model (Note 4); printed as > 2000 | 3 | ||
| ESD Withstand Voltage, Machine Model | VESD | 200 | V | Machine Model (Note 5); printed as > 200 | 3 | ||
| ESD Withstand Voltage, Charged Device Model | VESD | 1000 | V | Charged Device Model (Note 6); printed as > 1000 | 3 | ||
| Latch-Up Performance | ILatch-Up | 100 | mA | Above VCC and below GND at 85°C (Note 7) | 3 | ||
| Minimum High Level Input Voltage (VCC 3.0 V) | VIH | 2.1 | 1.5 | V | VCC = 3.0 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 | |
| Minimum High Level Input Voltage (VCC 4.5 V) | VIH | 3.15 | 2.25 | V | VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 | |
| Minimum High Level Input Voltage (VCC 5.5 V) | VIH | 3.85 | 2.75 | V | VCC = 5.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 | |
| Maximum Low Level Input Voltage (VCC 3.0 V) | VIL | 1.5 | 0.9 | V | VCC = 3.0 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 | |
| Maximum Low Level Input Voltage (VCC 4.5 V) | VIL | 2.25 | 1.35 | V | VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 | |
| Maximum Low Level Input Voltage (VCC 5.5 V) | VIL | 2.75 | 1.65 | V | VCC = 5.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 | |
| Minimum High Level Output Voltage (VCC 3.0 V, IOUT −50 µA) | VOH | 2.9 | 2.99 | V | VCC = 3.0 V; IOUT = −50 µA | 4 | |
| Minimum High Level Output Voltage (VCC 4.5 V, IOUT −50 µA) | VOH | 4.4 | 4.49 | V | VCC = 4.5 V; IOUT = −50 µA | 4 | |
| Minimum High Level Output Voltage (VCC 5.5 V, IOUT −50 µA) | VOH | 5.4 | 5.49 | V | VCC = 5.5 V; IOUT = −50 µA | 4 | |
| Minimum High Level Output Voltage (VCC 3.0 V, IOH −12 mA) | VOH | 2.46 | V | VIN = VIL or VIH; IOH = −12 mA | 4 | ||
| Minimum High Level Output Voltage (VCC 4.5 V, IOH −24 mA) | VOH | 3.76 | V | VIN = VIL or VIH; IOH = −24 mA | 4 | ||
| Minimum High Level Output Voltage (VCC 5.5 V, IOH −24 mA) | VOH | 4.76 | V | VIN = VIL or VIH; IOH = −24 mA | 4 | ||
| Maximum Low Level Output Voltage (VCC 3.0 V, IOUT 50 µA) | VOL | 0.002 | 0.1 | V | VCC = 3.0 V; IOUT = 50 µA | 4 | |
| Maximum Low Level Output Voltage (VCC 4.5 V, IOUT 50 µA) | VOL | 0.001 | 0.1 | V | VCC = 4.5 V; IOUT = 50 µA | 4 | |
| Maximum Low Level Output Voltage (VCC 5.5 V, IOUT 50 µA) | VOL | 0.001 | 0.1 | V | VCC = 5.5 V; IOUT = 50 µA | 4 | |
| Maximum Low Level Output Voltage (VCC 3.0 V, IOL 12 mA) | VOL | 0.44 | V | VIN = VIL or VIH; IOL = 12 mA | 4 | ||
| Maximum Low Level Output Voltage (VCC 4.5 V, IOL 24 mA) | VOL | 0.44 | V | VIN = VIL or VIH; IOL = 24 mA | 4 | ||
| Maximum Low Level Output Voltage (VCC 5.5 V, IOL 24 mA) | VOL | 0.44 | V | VIN = VIL or VIH; IOL = 24 mA | 4 | ||
| Maximum Input Leakage Current | IIN | -1 | 1 | µA | VI = VCC, GND; VCC 5.5 V | 4 | |
| Minimum Dynamic Output Current (low) | IOLD | 75 | mA | VOLD = 1.65 V Max | 4 | ||
| Minimum Dynamic Output Current (high) | IOHD | -75 | mA | VOHD = 3.85 V Min | 4 | ||
| Maximum Quiescent Supply Current | ICC | 80 | µA | VIN = VCC or GND; VCC 5.5 V | 4 | ||
| Propagation Delay An to On (tPLH, VCC 3.3 V) | tPLH | 3.5 | 8 | 13 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay An to On (tPHL, VCC 3.3 V) | tPHL | 2.5 | 7 | 11 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPLH, VCC 3.3 V) | tPLH | 3.5 | 9.5 | 13 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPHL, VCC 3.3 V) | tPHL | 3 | 8 | 11 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay An to On (tPLH, VCC 5.0 V) | tPLH | 2.5 | 6.5 | 9.5 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay An to On (tPHL, VCC 5.0 V) | tPHL | 2 | 5.5 | 8.5 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPLH, VCC 5.0 V) | tPLH | 3 | 7 | 10 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPHL, VCC 5.0 V) | tPHL | 2.5 | 6 | 8.5 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
CAD (KiCad official)
- Symbol:
MC74AC139DTR2G - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
mc74ac139dtr2g-etched.step/mc74ac139dtr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc74ac139dtr2g.step/mc74ac139dtr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (9 pp, sha256
2468181056176b51, retrieved 2026-10-20, tier: lcsc) - 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).
# MC74AC139DTR2G
**onsemi** · Signal Switches, Multiplexers, Decoders · TSSOP-16
MC74AC139DTR2G from onsemi, in a TSSOP-16. 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 | Ea | input | Active-LOW enable for decoder a; when HIGH, all decoder a outputs (O0a-O3a) are forced HIGH, and it can be used as the data input for a 4-output demultiplexer. |
| 2 | A0a | input | Binary-weighted address input A0 for decoder a, with input voltage range 0 V to VCC. |
| 3 | A1a | input | Binary-weighted address input A1 for decoder a, with input voltage range 0 V to VCC. |
| 4 | O0a | output | Active-LOW, mutually exclusive output 0 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 5 | O1a | output | Active-LOW, mutually exclusive output 1 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 6 | O2a | output | Active-LOW, mutually exclusive output 2 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 7 | O3a | output | Active-LOW, mutually exclusive output 3 of decoder a, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 8 | GND | power_in | Ground reference for all input and output voltages (0 V reference). |
| 9 | O3b | output | Active-LOW, mutually exclusive output 3 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 10 | O2b | output | Active-LOW, mutually exclusive output 2 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 11 | O1b | output | Active-LOW, mutually exclusive output 1 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 12 | O0b | output | Active-LOW, mutually exclusive output 0 of decoder b, rated for 24 mA source (IOH = −24 mA) and 24 mA sink (IOL = 24 mA). |
| 13 | A1b | input | Binary-weighted address input A1 for decoder b, with input voltage range 0 V to VCC. |
| 14 | A0b | input | Binary-weighted address input A0 for decoder b, with input voltage range 0 V to VCC. |
| 15 | Eb | input | Active-LOW enable for decoder b; when HIGH, all decoder b outputs (O0b-O3b) are forced HIGH, and it can be used as the data input for a 4-output demultiplexer. |
| 16 | VCC | power_in | Positive supply; 2.0 V to 6.0 V for 74AC and 4.5 V to 5.5 V for 74ACT recommended operating range (absolute maximum 0.5 V to 7.0 V). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-16 |
| Category | Logic |
| Pins | 16 |
## 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 (′AC) | VCC | 2 | 5 | 6 | V | | 3 |
| DC Input Voltage, Output Voltage (Ref. to GND) | VIN, VOUT | 0 | | | V | Ref. to GND; printed max is VCC | 3 |
| Input Rise and Fall Time ′AC (except Schmitt), VCC @ 3.0 V | tr, tf | | 150 | | ns/V | VCC @ 3.0 V | 3 |
| Input Rise and Fall Time ′AC (except Schmitt), VCC @ 4.5 V | tr, tf | | 40 | | ns/V | VCC @ 4.5 V | 3 |
| Input Rise and Fall Time ′AC (except Schmitt), VCC @ 5.5 V | tr, tf | | 25 | | ns/V | VCC @ 5.5 V | 3 |
| Junction Temperature (labelled PDIP in datasheet) | TJ | | | 140 | °C | (PDIP) | 3 |
| Operating Ambient Temperature Range | TA | -40 | 25 | 85 | °C | | 3 |
| Output Current − High | IOH | | | -24 | mA | | 3 |
| Output Current − Low | IOL | | | 24 | mA | | 3 |
| DC Supply Voltage | VCC | -0.5 | | 7 | V | | 3 |
| DC Input Voltage | VI | -0.5 | | | V | Upper limit printed as VCC + 0.5 V | 3 |
| DC Output Voltage | VO | -0.5 | | | V | Upper limit printed as VCC + 0.5 V (Note 1) | 3 |
| DC Input Diode Current | IIK | | | 20 | mA | | 3 |
| DC Output Diode Current | IOK | | | 50 | mA | | 3 |
| DC Output Sink/Source Current | IO | | | 50 | mA | | 3 |
| DC Supply Current per Output Pin | ICC | | | 50 | mA | | 3 |
| DC Ground Current per Output Pin | IGND | | | 50 | mA | | 3 |
| Storage Temperature Range | TSTG | -65 | | 150 | °C | | 3 |
| Lead Temperature | TL | | | 260 | °C | 1 mm from case for 10 seconds | 3 |
| Junction Temperature under Bias | TJ | | | 150 | °C | | 3 |
| Thermal Resistance, Junction-to-Ambient (TSSOP) | θJA | | 103.8 | | °C/W | TSSOP; per JESD51-7 (Note 2) | 3 |
| Power Dissipation in Still Air at 65°C (TSSOP) | PD | | | 500 | mW | TSSOP; still air at 65°C (Note 3) | 3 |
| ESD Withstand Voltage, Human Body Model | VESD | 2000 | | | V | Human Body Model (Note 4); printed as > 2000 | 3 |
| ESD Withstand Voltage, Machine Model | VESD | 200 | | | V | Machine Model (Note 5); printed as > 200 | 3 |
| ESD Withstand Voltage, Charged Device Model | VESD | 1000 | | | V | Charged Device Model (Note 6); printed as > 1000 | 3 |
| Latch-Up Performance | ILatch-Up | 100 | | | mA | Above VCC and below GND at 85°C (Note 7) | 3 |
| Minimum High Level Input Voltage (VCC 3.0 V) | VIH | 2.1 | 1.5 | | V | VCC = 3.0 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 |
| Minimum High Level Input Voltage (VCC 4.5 V) | VIH | 3.15 | 2.25 | | V | VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 |
| Minimum High Level Input Voltage (VCC 5.5 V) | VIH | 3.85 | 2.75 | | V | VCC = 5.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 |
| Maximum Low Level Input Voltage (VCC 3.0 V) | VIL | | 1.5 | 0.9 | V | VCC = 3.0 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 |
| Maximum Low Level Input Voltage (VCC 4.5 V) | VIL | | 2.25 | 1.35 | V | VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 |
| Maximum Low Level Input Voltage (VCC 5.5 V) | VIL | | 2.75 | 1.65 | V | VCC = 5.5 V; VOUT = 0.1 V or VCC − 0.1 V; TA −40 to 85°C | 4 |
| Minimum High Level Output Voltage (VCC 3.0 V, IOUT −50 µA) | VOH | 2.9 | 2.99 | | V | VCC = 3.0 V; IOUT = −50 µA | 4 |
| Minimum High Level Output Voltage (VCC 4.5 V, IOUT −50 µA) | VOH | 4.4 | 4.49 | | V | VCC = 4.5 V; IOUT = −50 µA | 4 |
| Minimum High Level Output Voltage (VCC 5.5 V, IOUT −50 µA) | VOH | 5.4 | 5.49 | | V | VCC = 5.5 V; IOUT = −50 µA | 4 |
| Minimum High Level Output Voltage (VCC 3.0 V, IOH −12 mA) | VOH | 2.46 | | | V | VIN = VIL or VIH; IOH = −12 mA | 4 |
| Minimum High Level Output Voltage (VCC 4.5 V, IOH −24 mA) | VOH | 3.76 | | | V | VIN = VIL or VIH; IOH = −24 mA | 4 |
| Minimum High Level Output Voltage (VCC 5.5 V, IOH −24 mA) | VOH | 4.76 | | | V | VIN = VIL or VIH; IOH = −24 mA | 4 |
| Maximum Low Level Output Voltage (VCC 3.0 V, IOUT 50 µA) | VOL | | 0.002 | 0.1 | V | VCC = 3.0 V; IOUT = 50 µA | 4 |
| Maximum Low Level Output Voltage (VCC 4.5 V, IOUT 50 µA) | VOL | | 0.001 | 0.1 | V | VCC = 4.5 V; IOUT = 50 µA | 4 |
| Maximum Low Level Output Voltage (VCC 5.5 V, IOUT 50 µA) | VOL | | 0.001 | 0.1 | V | VCC = 5.5 V; IOUT = 50 µA | 4 |
| Maximum Low Level Output Voltage (VCC 3.0 V, IOL 12 mA) | VOL | | | 0.44 | V | VIN = VIL or VIH; IOL = 12 mA | 4 |
| Maximum Low Level Output Voltage (VCC 4.5 V, IOL 24 mA) | VOL | | | 0.44 | V | VIN = VIL or VIH; IOL = 24 mA | 4 |
| Maximum Low Level Output Voltage (VCC 5.5 V, IOL 24 mA) | VOL | | | 0.44 | V | VIN = VIL or VIH; IOL = 24 mA | 4 |
| Maximum Input Leakage Current | IIN | -1 | | 1 | µA | VI = VCC, GND; VCC 5.5 V | 4 |
| Minimum Dynamic Output Current (low) | IOLD | 75 | | | mA | VOLD = 1.65 V Max | 4 |
| Minimum Dynamic Output Current (high) | IOHD | | | -75 | mA | VOHD = 3.85 V Min | 4 |
| Maximum Quiescent Supply Current | ICC | | | 80 | µA | VIN = VCC or GND; VCC 5.5 V | 4 |
| Propagation Delay An to On (tPLH, VCC 3.3 V) | tPLH | 3.5 | 8 | 13 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay An to On (tPHL, VCC 3.3 V) | tPHL | 2.5 | 7 | 11 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPLH, VCC 3.3 V) | tPLH | 3.5 | 9.5 | 13 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPHL, VCC 3.3 V) | tPHL | 3 | 8 | 11 | ns | VCC = 3.3 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay An to On (tPLH, VCC 5.0 V) | tPLH | 2.5 | 6.5 | 9.5 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay An to On (tPHL, VCC 5.0 V) | tPHL | 2 | 5.5 | 8.5 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPLH, VCC 5.0 V) | tPLH | 3 | 7 | 10 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
| Propagation Delay En to On (tPHL, VCC 5.0 V) | tPHL | 2.5 | 6 | 8.5 | ns | VCC = 5.0 V; CL = 50 pF; TA −40 to 85°C | 4 |
## CAD (KiCad official)
- Symbol: `MC74AC139DTR2G`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `mc74ac139dtr2g-etched.step` / `mc74ac139dtr2g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mc74ac139dtr2g.step` / `mc74ac139dtr2g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930620853014528) (9 pp, sha256 `2468181056176b51`, retrieved 2026-10-20, tier: lcsc)
- **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/mc74ac139dtr2g-datasheet.pdf)