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MM74HC138M
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
markdownMM74HC138M
onsemi · Signal Switches, Multiplexers, Decoders · SOIC-16
MM74HC138M 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 | A | input | Binary select input A (LSB); with B and C selects which one of the eight outputs goes LOW when enabled. |
| 2 | B | input | Binary select input B; with A and C selects which one of the eight outputs goes LOW when enabled. |
| 3 | C | input | Binary select input C (MSB); with A and B selects which one of the eight outputs goes LOW when enabled. |
| 4 | G2A | input | Active-LOW enable input; must be LOW (together with G2B LOW and G1 HIGH) to enable the decoder. |
| 5 | G2B | input | Active-LOW enable input; must be LOW (together with G2A LOW and G1 HIGH) to enable the decoder. |
| 6 | G1 | input | Active-HIGH enable input; must be HIGH (with G2A and G2B LOW) to enable the decoder. |
| 7 | Y7 | output | Active-LOW decoded output 7, normally HIGH and drives 10 LS-TTL loads. |
| 8 | GND | power_in | Ground, 0 V reference. |
| 9 | Y6 | output | Active-LOW decoded output 6, normally HIGH and drives 10 LS-TTL loads. |
| 10 | Y5 | output | Active-LOW decoded output 5, normally HIGH and drives 10 LS-TTL loads. |
| 11 | Y4 | output | Active-LOW decoded output 4, normally HIGH and drives 10 LS-TTL loads. |
| 12 | Y3 | output | Active-LOW decoded output 3, normally HIGH and drives 10 LS-TTL loads. |
| 13 | Y2 | output | Active-LOW decoded output 2, normally HIGH and drives 10 LS-TTL loads. |
| 14 | Y1 | output | Active-LOW decoded output 1, normally HIGH and drives 10 LS-TTL loads. |
| 15 | Y0 | output | Active-LOW decoded output 0, normally HIGH and drives 10 LS-TTL loads. |
| 16 | VCC | power_in | Positive supply voltage, recommended 2 V to 6 V (absolute maximum 7.0 V). |
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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage (VCC) recommended operating | VCC | 2 | 6 | V | Recommended operating range; printed as '26' in extracted text, split as 2 and 6 per Features (2V-6V) | 4 | |
| Operating Temperature Range | TA | -40 | 85 | °C | 4 | ||
| DC Input or Output Voltage | VIN, VOUT | 0 | V | Maximum printed as VCC | 4 | ||
| Input Rise or Fall Time | tr, tf | 1000 | ns | VCC = 2.0V | 4 | ||
| Input Rise or Fall Time | tr, tf | 500 | ns | VCC = 4.5V | 4 | ||
| Input Rise or Fall Time | tr, tf | 400 | ns | VCC = 6.0V | 4 | ||
| Supply Voltage (VCC) absolute maximum | VCC | -0.5 | 7 | V | Absolute maximum rating | 4 | |
| DC Input Voltage | VIN | -1.5 | V | Maximum printed as VCC + 1.5V | 4 | ||
| DC Output Voltage | VOUT | -0.5 | V | Maximum printed as VCC + 0.5V | 4 | ||
| Clamp Diode Current | IIK, IOK | -20 | 20 | mA | Printed as ±20 mA | 4 | |
| DC Output Current, per pin | IOUT | -25 | 25 | mA | Printed as ±25 mA, per pin | 4 | |
| DC VCC or GND Current, per pin | ICC | -50 | 50 | mA | Printed as ±50 mA, per pin | 4 | |
| Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| Power Dissipation | PD | 500 | mW | S.O. package only | 4 | ||
| Lead Temperature | TL | 260 | °C | Soldering 10 seconds | 4 | ||
| Minimum HIGH Level Input Voltage | VIH | 1.5 | V | VCC = 2.0V; limit over TA = -40 to 85°C | 4 | ||
| Minimum HIGH Level Input Voltage | VIH | 3.15 | V | VCC = 4.5V; limit over TA = -40 to 85°C | 4 | ||
| Minimum HIGH Level Input Voltage | VIH | 4.2 | V | VCC = 6.0V; limit over TA = -40 to 85°C | 4 | ||
| Maximum LOW Level Input Voltage | VIL | 0.5 | V | VCC = 2.0V; limit over TA = -40 to 85°C | 4 | ||
| Maximum LOW Level Input Voltage | VIL | 1.35 | V | VCC = 4.5V; limit over TA = -40 to 85°C | 4 | ||
| Maximum LOW Level Input Voltage | VIL | 1.8 | V | VCC = 6.0V; limit over TA = -40 to 85°C | 4 | ||
| Minimum HIGH Level Output Voltage | VOH | 1.9 | 2 | V | VIN = VIH or VIL; /IOUT/ ≤ 20 µA; VCC = 2.0V; limit over TA = -40 to 85°C | 4 | |
| Minimum HIGH Level Output Voltage | VOH | 4.4 | 4.5 | V | VIN = VIH or VIL; /IOUT/ ≤ 20 µA; VCC = 4.5V; limit over TA = -40 to 85°C | 4 | |
| Minimum HIGH Level Output Voltage | VOH | 5.9 | 6 | V | VIN = VIH or VIL; /IOUT/ ≤ 20 µA; VCC = 6.0V; limit over TA = -40 to 85°C | 4 | |
| Minimum HIGH Level Output Voltage | VOH | 3.84 | 4.2 | V | VIN = VIH or VIL; /IOUT/ ≤ 4.0 mA; VCC = 4.5V; limit over TA = -40 to 85°C | 4 | |
| Minimum HIGH Level Output Voltage | VOH | 5.34 | 5.7 | V | VIN = VIH or VIL; /IOUT/ ≤ 5.2 mA; VCC = 6.0V; limit over TA = -40 to 85°C | 4 | |
| Maximum LOW Level Output Voltage | VOL | 0 | 0.1 | V | VIN = VIH or VIL; /IOUT/ ≤ 20 µA; VCC = 2.0V; limit over TA = -40 to 85°C | 4 | |
| Maximum LOW Level Output Voltage | VOL | 0.2 | 0.33 | V | VIN = VIH or VIL; /IOUT/ ≤ 4.0 mA; VCC = 4.5V; limit over TA = -40 to 85°C | 4 | |
| Maximum Input Current | IIN | -1 | 0.1 | 1 | µA | VIN = VCC or GND; VCC = 6.0V; typ printed as ±0.1 | 4 |
| Maximum Quiescent Supply Current | ICC | 8 | 80 | µA | VIN = VCC or GND; IOUT = 0 µA; VCC = 6.0V; limit over TA = -40 to 85°C | 4 | |
| Maximum Propagation Delay, Binary Select to any Output (LOW-to-HIGH) | tPLH | 18 | 25 | ns | VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (HIGH-to-LOW) | tPHL | 28 | 35 | ns | VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns | 5 | |
| Maximum Propagation Delay, G1 to any Output | tPHL, tPLH | 18 | 25 | ns | VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (HIGH-to-LOW) | tPHL | 23 | 30 | ns | VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (LOW-to-HIGH) | tPLH | 18 | 25 | ns | VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (LOW-to-HIGH) | tPLH | 75 | 189 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 2.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (LOW-to-HIGH) | tPLH | 15 | 38 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 4.5V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (LOW-to-HIGH) | tPLH | 13 | 32 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 6.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (HIGH-to-LOW) | tPHL | 100 | 252 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 2.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (HIGH-to-LOW) | tPHL | 20 | 50 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 4.5V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, Binary Select to any Output (HIGH-to-LOW) | tPHL | 17 | 43 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 6.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G1 to any Output | tPHL, tPLH | 75 | 189 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 2.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G1 to any Output | tPHL, tPLH | 15 | 38 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 4.5V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G1 to any Output | tPHL, tPLH | 13 | 32 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 6.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (HIGH-to-LOW) | tPHL | 82 | 221 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 2.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (HIGH-to-LOW) | tPHL | 28 | 44 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 4.5V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (HIGH-to-LOW) | tPHL | 22 | 37 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 6.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (LOW-to-HIGH) | tPLH | 75 | 189 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 2.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (LOW-to-HIGH) | tPLH | 15 | 38 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 4.5V; max over TA = -40 to 85°C | 5 | |
| Maximum Propagation Delay, G2A or G2B to Output (LOW-to-HIGH) | tPLH | 13 | 32 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 6.0V; max over TA = -40 to 85°C | 5 | |
| Output Rise and Fall Time | tTLH, tTHL | 30 | 95 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 2.0V; max over TA = -40 to 85°C | 5 | |
| Output Rise and Fall Time | tTLH, tTHL | 8 | 19 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 4.5V; max over TA = -40 to 85°C | 5 | |
| Output Rise and Fall Time | tTLH, tTHL | 7 | 16 | ns | CL = 50 pF, tr = tf = 6 ns; VCC = 6.0V; max over TA = -40 to 85°C | 5 | |
| Maximum Input Capacitance | CIN | 3 | 10 | pF | Max printed for TA = 25°C and TA = -40 to 85°C | 5 |
CAD (KiCad official)
- Symbol:
MM74HC138M - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
mm74hc138m-etched.step/mm74hc138m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm74hc138m.step/mm74hc138m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (9 pp, sha256
de0da62d7ecfae39, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).