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74VHC138FT
Public Made by Adomby adom
TOSHIBA Signal Switches, Multiplexers, Decoders, TSSOP-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
markdown74VHC138FT
TOSHIBA · Signal Switches, Multiplexers, Decoders · TSSOP-16
74VHC138FT from TOSHIBA, 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 | A | input | Binary select input A; inputs accept 0 to 5.5 V regardless of supply voltage. |
| 2 | B | input | Binary select input B; inputs accept 0 to 5.5 V regardless of supply voltage. |
| 3 | C | input | Binary select input C; inputs accept 0 to 5.5 V regardless of supply voltage. |
| 4 | G2A | input | Active-low enable input; when high, decoding is inhibited and all outputs go high. |
| 5 | G2B | input | Active-low enable input; when high, decoding is inhibited and all outputs go high. |
| 6 | G1 | input | Active-high enable input; when held low, decoding is inhibited and all outputs go high. |
| 7 | Y7 | output | Active-low decoded output 7, goes low when selected while the device is enabled. |
| 8 | GND | power_in | Ground (0 V) supply pin. |
| 9 | Y6 | output | Active-low decoded output 6, goes low when selected while the device is enabled. |
| 10 | Y5 | output | Active-low decoded output 5, goes low when selected while the device is enabled. |
| 11 | Y4 | output | Active-low decoded output 4, goes low when selected while the device is enabled. |
| 12 | Y3 | output | Active-low decoded output 3, goes low when selected while the device is enabled. |
| 13 | Y2 | output | Active-low decoded output 2, goes low when selected while the device is enabled. |
| 14 | Y1 | output | Active-low decoded output 1, goes low when selected while the device is enabled. |
| 15 | Y0 | output | Active-low decoded output 0, goes low when selected while the device is enabled. |
| 16 | VCC | power_in | Positive supply pin; operating range 2.0 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| 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 | VCC | -0.5 | 7 | V | 4 | ||
| Input voltage | VIN | -0.5 | 7 | V | 4 | ||
| Input diode current | IIK | -20 | mA | 4 | |||
| Output diode current | IOK | -20 | 20 | mA | 4 | ||
| Output current | IOUT | -25 | 25 | mA | 4 | ||
| VCC/ground current | ICC | -75 | 75 | mA | 4 | ||
| Power dissipation | PD | 180 | mW | Ta = -40 to 85 °C; derate -3.25 mW/°C from 85 to 125 °C to 50 mW (Note 1) | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Supply voltage | VCC | 2 | 5.5 | V | 4 | ||
| Input voltage | VIN | 0 | 5.5 | V | 4 | ||
| Operating temperature | Topr | -40 | 125 | °C | 4 | ||
| Input rise and fall times | dt/dv | 0 | 100 | ns/V | VCC = 3.3 ± 0.3 V | 4 | |
| Input rise and fall times | dt/dv | 0 | 20 | ns/V | VCC = 5 ± 0.5 V | 4 | |
| High-level input voltage | VIH | 1.5 | V | Ta = 25 °C; VCC = 2.0 V | 5 | ||
| Low-level input voltage | VIL | 0.5 | V | Ta = 25 °C; VCC = 2.0 V | 5 | ||
| High-level output voltage | VOH | 1.9 | V | Ta = 25 °C; VCC = 2.0 V; IOH = -50 µA | 5 | ||
| High-level output voltage | VOH | 2.9 | V | Ta = 25 °C; VCC = 3.0 V; IOH = -50 µA | 5 | ||
| High-level output voltage | VOH | 4.4 | V | Ta = 25 °C; VCC = 4.5 V; IOH = -50 µA | 5 | ||
| High-level output voltage | VOH | 2.58 | V | Ta = 25 °C; VCC = 3.0 V; IOH = -4 mA | 5 | ||
| High-level output voltage | VOH | 3.94 | V | Ta = 25 °C; VCC = 4.5 V; IOH = -8 mA | 5 | ||
| Low-level output voltage | VOL | 0.1 | V | Ta = 25 °C; VCC = 2.0 V; IOL = 50 µA | 5 | ||
| Low-level output voltage | VOL | 0.36 | V | Ta = 25 °C; VCC = 3.0 V; IOL = 4 mA | 5 | ||
| Input leakage current | IIN | -0.1 | 0.1 | µA | Ta = 25 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 5 | |
| Quiescent supply current | ICC | 4 | µA | Ta = 25 °C; VIN = VCC or GND; VCC = 5.5 V | 5 | ||
| High-level output voltage | VOH | 2.48 | V | Ta = -40 to 85 °C; VCC = 3.0 V; IOH = -4 mA | 5 | ||
| High-level output voltage | VOH | 3.8 | V | Ta = -40 to 85 °C; VCC = 4.5 V; IOH = -8 mA | 5 | ||
| Low-level output voltage | VOL | 0.44 | V | Ta = -40 to 85 °C; VCC = 3.0 V; IOL = 4 mA | 5 | ||
| Input leakage current | IIN | -1 | 1 | µA | Ta = -40 to 85 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 5 | |
| Quiescent supply current | ICC | 40 | µA | Ta = -40 to 85 °C; VIN = VCC or GND; VCC = 5.5 V | 5 | ||
| High-level input voltage | VIH | 1.5 | V | Ta = -40 to 125 °C; VCC = 2.0 V | 6 | ||
| Low-level input voltage | VIL | 0.5 | V | Ta = -40 to 125 °C; VCC = 2.0 V | 6 | ||
| High-level output voltage | VOH | 1.9 | V | Ta = -40 to 125 °C; VCC = 2.0 V; IOH = -50 µA | 6 | ||
| High-level output voltage | VOH | 2.9 | V | Ta = -40 to 125 °C; VCC = 3.0 V; IOH = -50 µA | 6 | ||
| High-level output voltage | VOH | 4.4 | V | Ta = -40 to 125 °C; VCC = 4.5 V; IOH = -50 µA | 6 | ||
| High-level output voltage | VOH | 2.4 | V | Ta = -40 to 125 °C; VCC = 3.0 V; IOH = -4 mA | 6 | ||
| High-level output voltage | VOH | 3.7 | V | Ta = -40 to 125 °C; VCC = 4.5 V; IOH = -8 mA | 6 | ||
| Low-level output voltage | VOL | 0.1 | V | Ta = -40 to 125 °C; VCC = 2.0 V; IOL = 50 µA | 6 | ||
| Low-level output voltage | VOL | 0.55 | V | Ta = -40 to 125 °C; VCC = 3.0 V; IOL = 4 mA | 6 | ||
| Input leakage current | IIN | -2 | 2 | µA | Ta = -40 to 125 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 6 | |
| Quiescent supply current | ICC | 80 | µA | Ta = -40 to 125 °C; VIN = VCC or GND; VCC = 5.5 V | 6 | ||
| Propagation delay time (A, B, C - Y) | tPLH,tPHL | 1 | 11 | ns | Ta = -40 to 125 °C; VCC = 5.0 ± 0.5 V; CL = 15 pF; tr = tf = 3 ns | 7 | |
| Propagation delay time (G1 - Y) | tPLH,tPHL | 1 | 11 | ns | Ta = -40 to 125 °C; VCC = 5.0 ± 0.5 V; CL = 15 pF; tr = tf = 3 ns | 7 | |
| Propagation delay time (G2 - Y) | tPLH,tPHL | 1 | 11 | ns | Ta = -40 to 125 °C; VCC = 5.0 ± 0.5 V; CL = 15 pF; tr = tf = 3 ns | 7 | |
| Input capacitance | CIN | 10 | pF | Ta = -40 to 125 °C; tr = tf = 3 ns | 7 |
CAD (KiCad official)
- Symbol:
74VHC138FT - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
74vhc138ft-etched.step/74vhc138ft-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74vhc138ft.step/74vhc138ft.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TOSHIBA datasheet (9 pp, sha256
6992467e14e2a559, 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).