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74AC244MTC

Public Made by Adom

by adom

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

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74AC244MTC

onsemi · Buffers / Drivers · TSSOP-20

74AC244MTC 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 OE1 input 3-STATE output enable input for outputs O0-O3 (pins 18, 16, 14, 12); outputs are enabled when low and high-impedance when high.
2 I0 input Data input I0 that drives output O0 when OE1 is low.
3 O4 tri_state 3-STATE output O4, sources/sinks 24 mA, high-impedance when OE2 is high.
4 I1 input Data input I1 that drives output O1 when OE1 is low.
5 O5 tri_state 3-STATE output O5, sources/sinks 24 mA, high-impedance when OE2 is high.
6 I2 input Data input I2 that drives output O2 when OE1 is low.
7 O6 tri_state 3-STATE output O6, sources/sinks 24 mA, high-impedance when OE2 is high.
8 I3 input Data input I3 that drives output O3 when OE1 is low.
9 O7 tri_state 3-STATE output O7, sources/sinks 24 mA, high-impedance when OE2 is high.
10 GND power_in Ground pin.
11 I7 input Data input I7 that drives output O7 when OE2 is low.
12 O3 tri_state 3-STATE output O3, sources/sinks 24 mA, high-impedance when OE1 is high.
13 I6 input Data input I6 that drives output O6 when OE2 is low.
14 O2 tri_state 3-STATE output O2, sources/sinks 24 mA, high-impedance when OE1 is high.
15 I5 input Data input I5 that drives output O5 when OE2 is low.
16 O1 tri_state 3-STATE output O1, sources/sinks 24 mA, high-impedance when OE1 is high.
17 I4 input Data input I4 that drives output O4 when OE2 is low.
18 O0 tri_state 3-STATE output O0, sources/sinks 24 mA, high-impedance when OE1 is high.
19 OE2 input 3-STATE output enable input for outputs O4-O7 (pins 3, 5, 7, 9); outputs are enabled when low and high-impedance when high.
20 VCC power_in Supply voltage; recommended 2.0 to 6.0 V for AC (4.5 to 5.5 V for ACT), absolute maximum −0.5 to +7.0 V.

Key specifications

Parameter Value
Manufacturer onsemi
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 VCC -0.5 7 V 2
DC Input Diode Current IIK -20 20 mA VI = -0.5 V / VI = VCC + 0.5 2
DC Input Voltage VI -0.5 5.5 V -0.5 to VCC + 0.5 V; max shown is not printed as a number 2
DC Output Diode Current IOK -20 20 mA VO = -0.5 V / VI = VCC + 0.5 V 2
DC Output Source or Sink Current IO -50 50 mA ±50 mA 2
DC VCC or Ground Current per Output Pin ICC or IGND -50 50 mA ±50 mA 2
Storage Temperature TSTG -65 150 °C 2
Junction Temperature TJ 140 °C 2
Supply Voltage (AC) VCC 2 6 V AC 2
Operating Temperature TA -40 85 °C 2
Minimum Input Edge Rate, AC Devices ΔV/Δt 125 mV/ns VIN from 30% to 70% of VCC, VCC @ 3.3 V, 4.5 V, 5.5 V 2
Minimum HIGH Level Input Voltage VIH 2.1 1.5 V VCC = 3.0 V, VOUT = 0.1 V or VCC - 0.1 V; TA = -40°C to +85°C 3
Minimum HIGH Level Input Voltage VIH 3.15 2.25 V VCC = 4.5 V, VOUT = 0.1 V or VCC - 0.1 V; TA = -40°C to +85°C 3
Minimum HIGH Level Input Voltage VIH 3.85 2.75 V VCC = 5.5 V, VOUT = 0.1 V or VCC - 0.1 V; TA = -40°C to +85°C 3
Maximum LOW Level Input Voltage VIL 1.5 0.9 V VCC = 3.0 V, VOUT = 0.1 V or VCC - 0.1 V; TA = -40°C to +85°C 3
Maximum LOW Level Input Voltage VIL 2.25 1.35 V VCC = 4.5 V, VOUT = 0.1 V or VCC - 0.1 V; TA = -40°C to +85°C 3
Maximum LOW Level Input Voltage VIL 2.75 1.65 V VCC = 5.5 V, VOUT = 0.1 V or VCC - 0.1 V; TA = -40°C to +85°C 3
Minimum HIGH Level Output Voltage VOH 2.9 2.99 V VCC = 3.0 V, IOUT = -50 µA; TA = -40°C to +85°C 3
Minimum HIGH Level Output Voltage VOH 4.4 4.49 V VCC = 4.5 V, IOUT = -50 µA; TA = -40°C to +85°C 3
Minimum HIGH Level Output Voltage VOH 5.4 5.49 V VCC = 5.5 V, IOUT = -50 µA; TA = -40°C to +85°C 3
Minimum HIGH Level Output Voltage VOH 2.46 2.56 V VCC = 3.0 V, VIN = VIL or VIH, IOH = 12 mA; TA = -40°C to +85°C 3
Minimum HIGH Level Output Voltage VOH 3.76 3.86 V VCC = 4.5 V, VIN = VIL or VIH, IOH = 24 mA; TA = -40°C to +85°C 3
Minimum HIGH Level Output Voltage VOH 4.76 4.86 V VCC = 5.5 V, VIN = VIL or VIH, IOH = 24 mA (Note 1); TA = -40°C to +85°C 3
Maximum LOW Level Output Voltage VOL 0.002 0.1 V VCC = 3.0 V, IOUT = 50 µA; TA = -40°C to +85°C 3
Maximum LOW Level Output Voltage VOL 0.001 0.1 V VCC = 4.5 V, IOUT = 50 µA; TA = -40°C to +85°C 3
Maximum LOW Level Output Voltage VOL 0.36 0.44 V VCC = 3.0 V, VIN = VIL or VIH, IOL = 12 mA; TA = -40°C to +85°C 3
Maximum Input Leakage Current IIN -1 1 µA VCC = 5.5 V, VI = VCC, GND; TA = -40°C to +85°C 3
Maximum 3-STATE Leakage Current IOZ -2.5 2.5 µA VCC = 5.5 V, VI (OE) = VIL, VIH; VI = VCC, VGND; VO = VCC, GND; TA = -40°C to +85°C 3
Minimum Dynamic Output Current IOLD 75 mA VCC = 5.5 V, VOLD = 1.65 V Max.; TA = -40°C to +85°C (Note 3) 3
Minimum Dynamic Output Current IOHD -75 mA VCC = 5.5 V, VOHD = 3.85 V Min.; TA = -40°C to +85°C (Note 3) 3
Maximum Quiescent Supply Current ICC 4 40 µA VCC = 5.5 V, VIN = VCC or GND; TA = -40°C to +85°C 3
Propagation Delay, Data to Output tPLH 1.5 6.5 10 ns VCC = 3.3 V, CL = 50 pF, TA = -40°C to +85°C 5
Propagation Delay, Data to Output tPLH 1 5 7.5 ns VCC = 5.0 V, CL = 50 pF, TA = -40°C to +85°C 5
Propagation Delay, Data to Output tPHL 2 6.5 10 ns VCC = 3.3 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Enable Time tPZH 1.5 6 11 ns VCC = 3.3 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Enable Time tPZH 1.5 5 8 ns VCC = 5.0 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Enable Time tPZL 2 7.5 11 ns VCC = 3.3 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Enable Time tPZL 1.5 5.5 8.5 ns VCC = 5.0 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Disable Time tPHZ 1.5 7 10.5 ns VCC = 3.3 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Disable Time tPHZ 1 6.5 9.5 ns VCC = 5.0 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Disable Time tPLZ 2.5 7.5 11.5 ns VCC = 3.3 V, CL = 50 pF, TA = -40°C to +85°C 5
Output Disable Time tPLZ 2 6.5 9.5 ns VCC = 5.0 V, CL = 50 pF, TA = -40°C to +85°C 5
Input Capacitance CIN 4.5 pF VCC = OPEN 5
Power Dissipation Capacitance CPD 45 pF VCC = 5.0 V 5

CAD (KiCad official)

  • Symbol: 74AC244MTC
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74ac244mtc-etched.step / 74ac244mtc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74ac244mtc.step / 74ac244mtc.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (11 pp, sha256 99ad504f29a09b78, retrieved 2026-10-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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