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CD74HC147PWR
Public Made by Adomby adom
Texas Instruments 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
markdownCD74HC147PWR
Texas Instruments · Signal Switches, Multiplexers, Decoders · TSSOP-16
CD74HC147PWR from Texas Instruments, 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 | I4 | input | Active-low priority input 4; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 2 | I5 | input | Active-low priority input 5; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 3 | I6 | input | Active-low priority input 6; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 4 | I7 | input | Active-low priority input 7; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 5 | I8 | input | Active-low priority input 8; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 6 | Y2 | output | Active-low encoded binary output 2 of the priority encoder. |
| 7 | Y1 | output | Active-low encoded binary output 1 of the priority encoder. |
| 8 | GND | power_in | Ground reference for the device. |
| 9 | I0 | input | Active-low input listed as I0 in the pin table; the function text and truth table instead describe inputs I1 to I9, so its mapping should be confirmed. |
| 10 | I9 | input | Active-low input 9, which has the highest priority of the nine data inputs; all inputs HIGH encodes the implied decimal zero. |
| 11 | I1 | input | Active-low priority input 1; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 12 | I2 | input | Active-low priority input 2; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 13 | I3 | input | Active-low priority input 3; when two or more inputs are active, the highest-numbered active input takes priority in the encoded output. |
| 14 | Y3 | output | Active-low encoded binary output 3 of the priority encoder. |
| 15 | NC | unconnected | No internal connection. |
| 16 | VCC | power_in | Positive supply; recommended operating range is 2 V to 6 V for HC types and 4.5 V to 5.5 V for HCT types, with absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| 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 diode current | IIK | -20 | 20 | mA | For VI < -0.5V or VI > VCC + 0.5V | 4 | |
| Output diode current | IOK | -20 | 20 | mA | For VO < -0.5V or VO > VCC + 0.5V | 4 | |
| Output source or sink current per output pin | IO | -25 | 25 | mA | For VO > -0.5V or VO < VCC + 0.5V | 4 | |
| Continuous current through VCC or GND | -50 | 50 | mA | 4 | |||
| Supply voltage range (HC types) | VCC | 2 | 6 | V | HC types | 4 | |
| Input voltage | VI | 0 | V | Maximum printed as VCC | 4 | ||
| Output voltage | VO | 0 | V | Maximum printed as VCC | 4 | ||
| Input rise and fall time | tt | 1000 | ns | VCC = 2 V | 4 | ||
| Input rise and fall time | tt | 500 | ns | VCC = 4.5 V | 4 | ||
| Input rise and fall time | tt | 400 | ns | VCC = 6 V | 4 | ||
| Temperature range | TA | -55 | 125 | °C | Free-air operating temperature | 4 | |
| Junction-to-ambient thermal resistance | RθJA | 137.5 | °C/W | PW (TSSOP) 16-pin package | 4 | ||
| High-level input voltage | VIH | 1.5 | V | VCC = 2 V; -55°C to 125°C | 5 | ||
| High-level input voltage | VIH | 3.15 | V | VCC = 4.5 V; -55°C to 125°C | 5 | ||
| High-level input voltage | VIH | 4.2 | V | VCC = 6 V; -55°C to 125°C | 5 | ||
| Low-level input voltage | VIL | 0.5 | V | VCC = 2 V; -55°C to 125°C | 5 | ||
| Low-level input voltage | VIL | 1.35 | V | VCC = 4.5 V; -55°C to 125°C | 5 | ||
| Low-level input voltage | VIL | 1.8 | V | VCC = 6 V; -55°C to 125°C | 5 | ||
| High-level output voltage, CMOS loads | VOH | 1.9 | V | VI = VIH or VIL; IO = -0.02 mA; VCC = 2 V; -55°C to 125°C | 5 | ||
| High-level output voltage, CMOS loads | VOH | 4.4 | V | VI = VIH or VIL; IO = -0.02 mA; VCC = 4.5 V; -55°C to 125°C | 5 | ||
| High-level output voltage, CMOS loads | VOH | 5.9 | V | VI = VIH or VIL; IO = -0.02 mA; VCC = 6 V; -55°C to 125°C | 5 | ||
| High-level output voltage, TTL loads | VOH | 3.7 | V | IO = -4 mA; VCC = 4.5 V; -55°C to 125°C | 5 | ||
| High-level output voltage, TTL loads | VOH | 5.2 | V | IO = -5.2 mA; VCC = 6 V; -55°C to 125°C | 5 | ||
| Low-level output voltage, CMOS loads | VOL | 0.1 | V | VI = VIH or VIL; IO = 0.02 mA; VCC = 2 V; -55°C to 125°C | 5 | ||
| Low-level output voltage, TTL loads | VOL | 0.4 | V | IO = 4 mA; VCC = 4.5 V; -55°C to 125°C | 5 | ||
| Input leakage current | II | -1 | 1 | µA | VI = VCC or GND; VCC = 6 V; -55°C to 125°C | 5 | |
| Quiescent device current | ICC | 160 | µA | VI = VCC or GND; IO = 0; VCC = 6 V; -55°C to 125°C | 5 | ||
| Propagation delay, input to output | tPLH, tPHL | 240 | ns | Input tt = 6 ns; CL = 50 pF; VCC = 2 V; -55°C to 125°C | 6 | ||
| Propagation delay, input to output | tPLH, tPHL | 48 | ns | Input tt = 6 ns; CL = 50 pF; VCC = 4.5 V; -55°C to 125°C | 6 | ||
| Propagation delay, input to output | tPLH, tPHL | 41 | ns | Input tt = 6 ns; CL = 50 pF; VCC = 6 V; -55°C to 125°C | 6 | ||
| Transition times | tTLH, tTHL | 110 | ns | Input tt = 6 ns; CL = 50 pF; VCC = 2 V; -55°C to 125°C | 6 | ||
| Transition times | tTLH, tTHL | 22 | ns | Input tt = 6 ns; CL = 50 pF; VCC = 4.5 V; -55°C to 125°C | 6 | ||
| Transition times | tTLH, tTHL | 19 | ns | Input tt = 6 ns; CL = 50 pF; VCC = 6 V; -55°C to 125°C | 6 |
CAD (KiCad official)
- Symbol:
CD74HC147PWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
cd74hc147pwr-etched.step/cd74hc147pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd74hc147pwr.step/cd74hc147pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
6c32f345f1f9ac4b, 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).