component

SN74AHCT574PWR

Public Made by Adom

by adom

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

componentlogic icssn74ahct574pwrfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 13d ago
viewers sn74ahct574pwr: viewers · Ray 13d ago
package.json Publish 0.1.0 · Ray 13d ago
page.json Set visibility: public · Ray 13d ago
README.md Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr-etched.glb Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr-etched.step sn74ahct574pwr: factory component page (tier=mfr) · Ray 13d ago
sn74ahct574pwr-hero.glb sn74ahct574pwr: hero GLB from the etched model (keeps the MPN mark) · Ray 13d ago
sn74ahct574pwr-hero.overlay.json Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr.glb Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr.kicad_mod Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr.kicad_sym Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr.lbr Publish 0.1.0 · Ray 13d ago
sn74ahct574pwr.step Publish 0.1.0 · Ray 13d ago

SN74AHCT574PWR

Texas Instruments · Logic ICs · TSSOP-20

SN74AHCT574PWR from Texas Instruments, in a TSSOP-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 Output Enable input for the 3-state outputs; the excerpt gives no polarity or logic-level detail for this pin.
2 1D input Data input 1D for the first latch/flip-flop channel.
3 2D input Data input 2D for the second channel.
4 3D input Data input 3D for the third channel.
5 4D input Data input 4D for the fourth channel.
6 5D input Data input 5D for the fifth channel.
7 6D input Data input 6D for the sixth channel.
8 7D input Data input 7D for the seventh channel.
9 8D input Data input 8D for the eighth channel.
10 GND power_in Ground pin for the device.
11 CLK input Clock input that latches the D inputs into the flip-flops.
12 8Q output Output 8Q of the eighth channel.
13 7Q output Output 7Q of the seventh channel.
14 6Q output Output 6Q of the sixth channel.
15 5Q output Output 5Q of the fifth channel.
16 4Q output Output 4Q of the fourth channel.
17 3Q output Output 3Q of the third channel.
18 2Q output Output 2Q of the second channel.
19 1Q output Output 1Q of the first channel.
20 VCC power_in Power supply pin; the recommended supply range is 4.5 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Logic ICs
Pins 20

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 range VCC -0.5 7 V 4
Input voltage range VI -0.5 7 V 4
Output voltage range VO -0.5 V Printed as VCC + 0.5 V 4
Input clamp current IIK -20 mA VI < 0 4
Output clamp current IOK -20 20 mA VO < 0 or VO > VCC 4
Continuous output current IO -25 25 mA VO = 0 to VCC 4
Continuous current through VCC or GND -50 50 mA 4
Storage temperature range Tstg -65 150 °C 4
Supply voltage VCC 4.5 5.5 V SN74AHCT574 4
High-level input voltage VIH 2 V 4
Low-level input voltage VIL 0.8 V 4
Input voltage VI 0 5.5 V 4
Output voltage VO 0 V Printed as VCC 4
High-level output current IOH -8 mA 4
Low-level output current IOL 8 mA 4
Input transition rise or fall rate Δt/Δv 20 ns/V 4
Operating free-air temperature TA -40 125 °C SN74AHCT574 4
High-level output voltage VOH 4.4 V IOH = −50 µA; VCC = 4.5 V; TA = −40 °C to 125 °C 5
High-level output voltage VOH 3.8 V IOH = −8 mA; VCC = 4.5 V; TA = −40 °C to 125 °C 5
Low-level output voltage VOL 0.1 V IOL = 50 µA; VCC = 4.5 V; TA = −40 °C to 125 °C 5
Low-level output voltage VOL 0.44 V IOL = 8 mA; VCC = 4.5 V; TA = −40 °C to 125 °C 5
Input leakage current II -1 1 µA VI = 5.5 V or GND; VCC = 0 V to 5.5 V 5
Off-state (high-impedance) output current IOZ -2.5 2.5 µA VO = VCC or GND; VCC = 5.5 V 5
Quiescent supply current ICC 40 µA VI = VCC or GND, IO = 0; VCC = 5.5 V 5
Increase in supply current per TTL input ΔICC 1.5 mA One input at 3.4 V, other inputs at VCC or GND; VCC = 5.5 V 5
Input capacitance Ci 10 pF VI = VCC or GND; VCC = 5 V 5
Pulse duration, LE high tw 5.5 ns VCC = 5 V ± 0.5 V 5
Setup time, data before LE↓ tsu 3.5 ns VCC = 5 V ± 0.5 V 5
Hold time, data after LE↓ th 1.5 ns VCC = 5 V ± 0.5 V 5
Maximum clock frequency fmax 110 ns CL = 15 pF; VCC = 5 V ± 0.5 V 6
Maximum clock frequency fmax 75 ns CL = 50 pF; VCC = 5 V ± 0.5 V 6
Propagation delay CLK to Q tPLH 1 11 ns CL = 15 pF; VCC = 5 V ± 0.5 V 6
Enable time OE to Q tPZH 1 11.5 ns CL = 15 pF; VCC = 5 V ± 0.5 V 6
Disable time OE to Q tPHZ 1 11.5 ns CL = 15 pF; VCC = 5 V ± 0.5 V 6
Propagation delay CLK to Q tPLH 1 13 ns CL = 50 pF; VCC = 5 V ± 0.5 V 6
Enable time OE to Q tPZH 1 13.5 ns CL = 50 pF; VCC = 5 V ± 0.5 V 6
Disable time OE to Q tPHZ 1 13 ns CL = 50 pF; VCC = 5 V ± 0.5 V 6
Output skew tsk(o) 1 ns CL = 50 pF 6
Junction-to-ambient thermal resistance (PW, TSSOP-20) RθJA 116.8 °C/W 5
Junction-to-case (top) thermal resistance (PW, TSSOP-20) RθJC(top) 58.5 °C/W 5
Junction-to-board thermal resistance (PW, TSSOP-20) RθJB 78.7 °C/W 5
Junction-to-top characterization parameter (PW, TSSOP-20) ψJT 12.6 °C/W 5
Junction-to-board characterization parameter (PW, TSSOP-20) ψJB 77.9 °C/W 5

CAD (KiCad official)

  • Symbol: SN74AHCT574PWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: sn74ahct574pwr-etched.step / sn74ahct574pwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahct574pwr.step / sn74ahct574pwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 1dfd05c8ffda4541, retrieved 2026-10-18, 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