component
SN74HCT573DWR
Public Made by Adomby adom
Texas Instruments Latches, SOIC-20-300mil. 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
markdownSN74HCT573DWR
Texas Instruments · Latches · SOIC-20-300mil
SN74HCT573DWR from Texas Instruments, in a SOIC-20-300mil. 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 | OE | input | Buffered output-enable input; high places the eight Q outputs in the high-impedance state, low enables them, and it does not affect the latches' internal operation. |
| 2 | 1D | input | Data input for latch 1, transparent to 1Q while LE is high and latched when LE is low. |
| 3 | 2D | input | Data input for latch 2, transparent to 2Q while LE is high and latched when LE is low. |
| 4 | 3D | input | Data input for latch 3, transparent to 3Q while LE is high and latched when LE is low. |
| 5 | 4D | input | Data input for latch 4, transparent to 4Q while LE is high and latched when LE is low. |
| 6 | 5D | input | Data input for latch 5, transparent to 5Q while LE is high and latched when LE is low. |
| 7 | 6D | input | Data input for latch 6, transparent to 6Q while LE is high and latched when LE is low. |
| 8 | 7D | input | Data input for latch 7, transparent to 7Q while LE is high and latched when LE is low. |
| 9 | 8D | input | Data input for latch 8, transparent to 8Q while LE is high and latched when LE is low. |
| 10 | GND | power_in | Ground reference for the device; continuous current through VCC or GND is limited to ±70 mA. |
| 11 | LE | input | Latch-enable input; outputs follow the D inputs while high and retain the data set up at D when low. |
| 12 | 8Q | tri_state | 3-state output of latch 8 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 13 | 7Q | tri_state | 3-state output of latch 7 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 14 | 6Q | tri_state | 3-state output of latch 6 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 15 | 5Q | tri_state | 3-state output of latch 5 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 16 | 4Q | tri_state | 3-state output of latch 4 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 17 | 3Q | tri_state | 3-state output of latch 3 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 18 | 2Q | tri_state | 3-state output of latch 2 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 19 | 1Q | tri_state | 3-state output of latch 1 with ±6 mA drive at 5 V, high-impedance when OE is high. |
| 20 | VCC | power_in | Supply voltage pin, recommended 4.5 V to 5.5 V (absolute maximum 7 V), with a 0.1-µF bypass capacitor recommended close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-300mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74HCT573DWR - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
sn74hct573dwr-etched.step/sn74hct573dwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hct573dwr.step/sn74hct573dwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
989f5f298ade3a5b, retrieved 2026-10-06, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).