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SN74LVT573PWR

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Texas Instruments Latches, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74LVT573PWR

Texas Instruments · Latches · SOIC-20

SN74LVT573PWR from Texas Instruments, in a SOIC-20. 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 Active-low buffered output enable; when high, the eight outputs go to high-impedance, and OE should be tied to VCC through a pullup resistor to keep the outputs high-Z during power-up and power-down.
2 1D input Data input for latch 1, with active bus-hold so an unused or floating input holds a valid logic level; data is passed to 1Q while LE is high.
3 2D input Data input for latch 2, with active bus-hold to hold a valid logic level when floating; data is passed to 2Q while LE is high.
4 3D input Data input for latch 3, with active bus-hold to hold a valid logic level when floating; data is passed to 3Q while LE is high.
5 4D input Data input for latch 4, with active bus-hold to hold a valid logic level when floating; data is passed to 4Q while LE is high.
6 5D input Data input for latch 5, with active bus-hold to hold a valid logic level when floating; data is passed to 5Q while LE is high.
7 6D input Data input for latch 6, with active bus-hold to hold a valid logic level when floating; data is passed to 6Q while LE is high.
8 7D input Data input for latch 7, with active bus-hold to hold a valid logic level when floating; data is passed to 7Q while LE is high.
9 8D input Data input for latch 8, with active bus-hold to hold a valid logic level when floating; data is passed to 8Q while LE is high.
10 GND power_in Ground reference for the device.
11 LE input Latch enable; while LE is high the Q outputs follow the D inputs, and when LE is taken low the Q outputs latch the levels present at D.
12 8Q tri_state Output of latch 8, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
13 7Q tri_state Output of latch 7, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
14 6Q tri_state Output of latch 6, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
15 5Q tri_state Output of latch 5, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
16 4Q tri_state Output of latch 4, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
17 3Q tri_state Output of latch 3, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
18 2Q tri_state Output of latch 2, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
19 1Q tri_state Output of latch 1, which can be placed in high-impedance by OE; the device is rated for IOL of 64 mA and IOH of -32 mA at VCC = 3 V for the SN74LVT573.
20 VCC power_in Supply voltage, specified as 2.7 V to 3.6 V for the SN74LVT573.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-20
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74LVT573PWR
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20 (KiCad packages3D, STEP)
  • 3D model files: sn74lvt573pwr-etched.step / sn74lvt573pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lvt573pwr.step / sn74lvt573pwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (17 pp, sha256 4936cbbffffee6ae, retrieved 2026-10-11, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF