component
MC74ACT138DR2G
Public Made by Adomby adom
onsemi Signal Switches, Multiplexers, Decoders, SOIC-16. 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
markdownMC74ACT138DR2G
onsemi · Signal Switches, Multiplexers, Decoders · SOIC-16
MC74ACT138DR2G from onsemi, in a SOIC-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 | A0 | input | Binary address input A0 (least significant bit) selecting one of the eight mutually exclusive active-LOW outputs; ′ACT138 inputs are TTL compatible. |
| 2 | A1 | input | Binary address input A1 selecting one of the eight mutually exclusive active-LOW outputs; ′ACT138 inputs are TTL compatible. |
| 3 | A2 | input | Binary address input A2 (most significant bit) selecting one of the eight mutually exclusive active-LOW outputs; ′ACT138 inputs are TTL compatible. |
| 4 | E1 | input | Active-LOW enable input; all outputs are HIGH unless E1 and E2 are LOW and E3 is HIGH. |
| 5 | E2 | input | Active-LOW enable input; all outputs are HIGH unless E1 and E2 are LOW and E3 is HIGH. |
| 6 | E3 | input | Active-HIGH enable input; all outputs are HIGH unless E3 is HIGH and E1 and E2 are LOW. |
| 7 | O7 | output | Active-LOW decoder output 7, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 8 | GND | power_in | Ground reference for all voltages (VIN, VOUT and VCC are referenced to GND). |
| 9 | O6 | output | Active-LOW decoder output 6, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 10 | O5 | output | Active-LOW decoder output 5, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 11 | O4 | output | Active-LOW decoder output 4, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 12 | O3 | output | Active-LOW decoder output 3, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 13 | O2 | output | Active-LOW decoder output 2, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 14 | O1 | output | Active-LOW decoder output 1, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 15 | O0 | output | Active-LOW decoder output 0, mutually exclusive with the other outputs; rated for 24 mA source/sink (IOH/IOL). |
| 16 | VCC | power_in | Positive supply; recommended 4.5 V to 5.5 V for ′ACT devices, absolute maximum −0.5 V to +7.0 V referenced to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-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 |
|---|---|---|---|---|---|---|---|
| DC Supply Voltage (Referenced to GND) | VCC | -0.5 | 7 | V | Referenced to GND | 3 | |
| DC Input Voltage (Referenced to GND) | VIN | -0.5 | V | Upper limit printed as VCC + 0.5 V | 3 | ||
| DC Output Voltage (Referenced to GND) | VOUT | -0.5 | V | Upper limit printed as VCC + 0.5 V | 3 | ||
| DC Input Current, per Pin | IIN | -20 | 20 | mA | Per pin | 3 | |
| DC Output Sink/Source Current, per Pin | IOUT | -50 | 50 | mA | Per pin | 3 | |
| DC VCC or GND Current per Output Pin | ICC | -50 | 50 | mA | Per output pin | 3 | |
| Storage Temperature | Tstg | -65 | 150 | °C | 3 | ||
| Supply Voltage ′ACT | VCC | 4.5 | 5 | 5.5 | V | ′ACT devices | 3 |
| DC Input Voltage, Output Voltage (Ref. to GND) | VIN, VOUT | 0 | V | Ref. to GND; upper limit printed as VCC | 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 | |||
| Minimum High Level Input Voltage (ACT) | VIH | 2 | 1.5 | V | VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V; limit TA = −40°C to +85°C | 5 | |
| Maximum Low Level Input Voltage (ACT) | VIL | 1.5 | 0.8 | V | VCC = 4.5 V; VOUT = 0.1 V or VCC − 0.1 V; limit TA = −40°C to +85°C | 5 | |
| Minimum High Level Output Voltage (ACT) | VOH | 4.4 | 4.49 | V | VCC = 4.5 V; IOUT = −50 μA | 5 | |
| Minimum High Level Output Voltage (ACT) | VOH | 5.4 | 5.49 | V | VCC = 5.5 V; IOUT = −50 μA | 5 | |
| Minimum High Level Output Voltage (ACT) | VOH | 3.76 | V | VCC = 4.5 V; VIN = VIL or VIH; IOH −24 mA; limit TA = −40°C to +85°C | 5 | ||
| Minimum High Level Output Voltage (ACT) | VOH | 4.76 | V | VCC = 5.5 V; VIN = VIL or VIH; IOH −24 mA; limit TA = −40°C to +85°C | 5 | ||
| Maximum Low Level Output Voltage (ACT) | VOL | 0.001 | 0.1 | V | VCC = 4.5 V; IOUT = 50 μA | 5 | |
| Maximum Low Level Output Voltage (ACT) | VOL | 0.44 | V | VCC = 4.5 V; VIN = VIL or VIH; IOL 24 mA; limit TA = −40°C to +85°C | 5 | ||
| Maximum Input Leakage Current | IIN | -1 | 1 | μA | VI = VCC, GND; VCC = 5.5 V; limit TA = −40°C to +85°C | 5 | |
| Additional Max. ICC/Input | ΔICCT | 0.6 | 1.5 | mA | VI = VCC − 2.1 V; VCC = 5.5 V | 5 | |
| Minimum Dynamic Output Current | IOLD | 75 | mA | VOLD = 1.65 V Max; VCC = 5.5 V; limit TA = −40°C to +85°C | 5 | ||
| Minimum Dynamic Output Current | IOHD | -75 | mA | VOHD = 3.85 V Min; VCC = 5.5 V; limit TA = −40°C to +85°C | 5 | ||
| Maximum Quiescent Supply Current | ICC | 80 | μA | VIN = VCC or GND; VCC = 5.5 V; limit TA = −40°C to +85°C | 5 | ||
| Propagation Delay An to On (tPLH) | tPLH | 1.5 | 7 | 11.5 | ns | VCC = 5.0 V ±0.5 V; CL = 50 pF; min/max at TA = −40°C to +85°C; Fig. 3−6 | 6 |
| Propagation Delay An to On (tPHL) | tPHL | 1.5 | 6.5 | 11.5 | ns | VCC = 5.0 V ±0.5 V; CL = 50 pF; min/max at TA = −40°C to +85°C; Fig. 3−6 | 6 |
| Propagation Delay E1 or E2 to On (tPLH) | tPLH | 2 | 8 | 12.5 | ns | VCC = 5.0 V ±0.5 V; CL = 50 pF; min/max at TA = −40°C to +85°C; Fig. 3−6 | 6 |
| Propagation Delay E1 or E2 to On (tPHL) | tPHL | 2 | 7.5 | 12.5 | ns | VCC = 5.0 V ±0.5 V; CL = 50 pF; min/max at TA = −40°C to +85°C; Fig. 3−6 | 6 |
| Propagation Delay E3 to On (tPLH) | tPLH | 2 | 8 | 13 | ns | VCC = 5.0 V ±0.5 V; CL = 50 pF; min/max at TA = −40°C to +85°C; Fig. 3−6 | 6 |
| Propagation Delay E3 to On (tPHL) | tPHL | 1.5 | 6.5 | 11.5 | ns | VCC = 5.0 V ±0.5 V; CL = 50 pF; min/max at TA = −40°C to +85°C; Fig. 3−6 | 6 |
| Input Rise and Fall Time ′ACT Devices except Schmitt Inputs | tr, tf | 10 | ns/V | VCC @ 4.5 V; VIN from 0.8 V to 2.0 V (Note 2) | 3 | ||
| Input Rise and Fall Time ′ACT Devices except Schmitt Inputs | tr, tf | 8 | ns/V | VCC @ 5.5 V; VIN from 0.8 V to 2.0 V (Note 2) | 3 |
CAD (KiCad official)
- Symbol:
MC74ACT138DR2G - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
mc74act138dr2g-etched.step/mc74act138dr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mc74act138dr2g.step/mc74act138dr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (11 pp, sha256
be9feeca2cec6152, retrieved 2026-10-18, 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).