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MC74AC574DTR2G

Public Made by Adom

by adom

onsemi Flip Flops, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MC74AC574DTR2G

onsemi · Flip Flops · TSSOP-20

MC74AC574DTR2G from onsemi, 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 3-state output enable input; outputs are enabled when LOW and go to high impedance when HIGH, without affecting the flip-flop state.
2 D0 input Data input 0, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
3 D1 input Data input 1, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
4 D2 input Data input 2, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
5 D3 input Data input 3, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
6 D4 input Data input 4, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
7 D5 input Data input 5, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
8 D6 input Data input 6, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
9 D7 input Data input 7, stored in its flip-flop on the LOW-to-HIGH clock (CP) transition.
10 GND power_in Ground reference for the supply and all input and output voltages.
11 CP input Buffered common clock pulse input; data is stored on the LOW-to-HIGH transition.
12 O7 tri_state 3-state output 7, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
13 O6 tri_state 3-state output 6, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
14 O5 tri_state 3-state output 5, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
15 O4 tri_state 3-state output 4, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
16 O3 tri_state 3-state output 3, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
17 O2 tri_state 3-state output 2, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
18 O1 tri_state 3-state output 1, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
19 O0 tri_state 3-state output 0, sources/sinks 24 mA and goes to high impedance when OE is HIGH.
20 VCC power_in Positive supply; recommended 2.0 V to 6.0 V for 'AC (4.5 V to 5.5 V for 'ACT), absolute maximum -0.5 V to +7.0 V.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-20
Category Logic
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
DC Supply Voltage (Referenced to GND) VCC -0.5 7 V Referenced to GND 2
DC Input Voltage (Referenced to GND) VIN -0.5 V Max is VCC + 0.5 V 2
DC Output Voltage (Referenced to GND) VOUT -0.5 V Max is VCC + 0.5 V 2
DC Input Current, per Pin IIN -20 20 mA Per pin 2
DC Output Sink/Source Current, per Pin IOUT -50 50 mA Per pin 2
DC VCC or GND Current per Output Pin ICC -50 50 mA Per output pin 2
Storage Temperature Tstg -65 150 °C 2
Supply Voltage 'AC devices VCC 2 5 6 V 'AC devices 3
DC Input Voltage, Output Voltage (Ref. to GND) VIN, VOUT 0 V Ref. to GND; max is VCC 3
Input Rise and Fall Time, 'AC devices except Schmitt Inputs, VCC @ 3.0 V tr, tf 150 ns/V VCC @ 3.0 V; VIN from 30% to 70% VCC 3
Input Rise and Fall Time, 'AC devices except Schmitt Inputs, VCC @ 4.5 V tr, tf 40 ns/V VCC @ 4.5 V; VIN from 30% to 70% VCC 3
Input Rise and Fall Time, 'AC devices except Schmitt Inputs, VCC @ 5.5 V tr, tf 25 ns/V VCC @ 5.5 V; VIN from 30% to 70% VCC 3
Operating Ambient Temperature Range TA -40 25 85 °C 3
Output Current - High IOH -24 mA 3
Output Current - Low IOL 24 mA 3
Minimum High Level Input Voltage, 74AC VCC 3.0 V VIH 2.1 1.5 V VOUT = 0.1 V or VCC − 0.1 V; VCC = 3.0 V 3
Minimum High Level Input Voltage, 74AC VCC 4.5 V VIH 3.15 2.25 V VOUT = 0.1 V or VCC − 0.1 V; VCC = 4.5 V 3
Minimum High Level Input Voltage, 74AC VCC 5.5 V VIH 3.85 2.75 V VOUT = 0.1 V or VCC − 0.1 V; VCC = 5.5 V 3
Maximum Low Level Input Voltage, 74AC VCC 3.0 V VIL 1.5 0.9 V VOUT = 0.1 V or VCC − 0.1 V; VCC = 3.0 V 3
Maximum Low Level Input Voltage, 74AC VCC 4.5 V VIL 2.25 1.35 V VOUT = 0.1 V or VCC − 0.1 V; VCC = 4.5 V 3
Maximum Low Level Input Voltage, 74AC VCC 5.5 V VIL 2.75 1.65 V VOUT = 0.1 V or VCC − 0.1 V; VCC = 5.5 V 3
Minimum High Level Output Voltage, IOUT -50 µA, VCC 3.0 V VOH 2.9 2.99 V IOUT = −50 A; VCC = 3.0 V 3
Minimum High Level Output Voltage, IOUT -50 µA, VCC 4.5 V VOH 4.4 4.49 V IOUT = −50 A; VCC = 4.5 V 3
Minimum High Level Output Voltage, IOUT -50 µA, VCC 5.5 V VOH 5.4 5.49 V IOUT = −50 A; VCC = 5.5 V 3
Minimum High Level Output Voltage, IOH -12 mA, VCC 3.0 V VOH 2.46 V VIN = VIL or VIH; IOH = −12 mA; VCC = 3.0 V 3
Minimum High Level Output Voltage, IOH -24 mA, VCC 4.5 V VOH 3.76 V VIN = VIL or VIH; IOH = −24 mA; VCC = 4.5 V 3
Minimum High Level Output Voltage, IOH -24 mA, VCC 5.5 V VOH 4.76 V VIN = VIL or VIH; IOH = −24 mA; VCC = 5.5 V 3
Maximum Low Level Output Voltage, IOUT 50 µA, VCC 3.0 V VOL 0.002 0.1 V IOUT = 50 A; VCC = 3.0 V 3
Maximum Low Level Output Voltage, IOUT 50 µA, VCC 4.5 V VOL 0.001 0.1 V IOUT = 50 A; VCC = 4.5 V 3
Maximum Low Level Output Voltage, IOUT 50 µA, VCC 5.5 V VOL 0.001 0.1 V IOUT = 50 A; VCC = 5.5 V 3
Maximum Low Level Output Voltage, IOL 12 mA, VCC 3.0 V VOL 0.44 V VIN = VIL or VIH; IOL = 12 mA; VCC = 3.0 V 3
Maximum Low Level Output Voltage, IOL 24 mA, VCC 4.5 V VOL 0.44 V VIN = VIL or VIH; IOL = 24 mA; VCC = 4.5 V 3
Maximum Low Level Output Voltage, IOL 24 mA, VCC 5.5 V VOL 0.44 V VIN = VIL or VIH; IOL = 24 mA; VCC = 5.5 V 3
Maximum Input Leakage Current IIN -1 0.1 1 A VI = VCC, GND; VCC = 5.5 V 3
Minimum Dynamic Output Current, low IOLD 75 mA VOLD = 1.65 V Max; VCC = 5.5 V 3
Minimum Dynamic Output Current, high IOHD -75 mA VOHD = 3.85 V Min; VCC = 5.5 V 3
Maximum Quiescent Supply Current ICC 8 80 A VIN = VCC or GND; VCC = 5.5 V 3
Maximum Clock Frequency, VCC 3.3 V fmax 60 MHz VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Maximum Clock Frequency, VCC 5.0 V fmax 85 MHz VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Propagation Delay CP to On, tPLH, VCC 3.3 V tPLH 3.5 15 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Propagation Delay CP to On, tPLH, VCC 5.0 V tPLH 2 11 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Propagation Delay CP to On, tPHL, VCC 3.3 V tPHL 3.5 13.5 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Propagation Delay CP to On, tPHL, VCC 5.0 V tPHL 2 9.5 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Enable Time, tPZH, VCC 3.3 V tPZH 2.5 12 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Enable Time, tPZH, VCC 5.0 V tPZH 2 9 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Enable Time, tPZL, VCC 3.3 V tPZL 3.5 11.5 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Enable Time, tPZL, VCC 5.0 V tPZL 2 9 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Disable Time, tPHZ, VCC 3.3 V tPHZ 4.5 13 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Disable Time, tPHZ, VCC 5.0 V tPHZ 2 10.5 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Disable Time, tPLZ, VCC 3.3 V tPLZ 2.5 10 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Output Disable Time, tPLZ, VCC 5.0 V tPLZ 1.5 8.5 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Setup Time, HIGH or LOW Dn to CP, VCC 3.3 V ts 3 2.5 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Setup Time, HIGH or LOW Dn to CP, VCC 5.0 V ts 2 1.5 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
Hold Time, HIGH or LOW Dn to CP, VCC 3.3 V th 1.5 1.5 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
Hold Time, HIGH or LOW Dn to CP, VCC 5.0 V th 1.5 1.5 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4
CP Pulse Width, HIGH or LOW, VCC 3.3 V tw 7 6 ns VCC = 3.3 V; CL = 50 pF; TA = −40°C to +85°C 4
CP Pulse Width, HIGH or LOW, VCC 5.0 V tw 5 4 ns VCC = 5.0 V; CL = 50 pF; TA = −40°C to +85°C 4

CAD (KiCad official)

  • Symbol: MC74AC574DTR2G
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: mc74ac574dtr2g-etched.step / mc74ac574dtr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc74ac574dtr2g.step / mc74ac574dtr2g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (10 pp, sha256 714f59a978524ce6, retrieved 2026-10-20, 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