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74ACT244MTC

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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74ACT244MTC

onsemi · Buffers / Drivers · TSSOP-20

74ACT244MTC 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 the first buffer group (active low); a high level puts outputs O0-O3 in high impedance.
2 I0 input Data input I0, TTL-compatible on ACT244, driving output O0.
3 O4 tri_state 3-STATE output O4, sources/sinks 24 mA, high impedance when OE2 is high.
4 I1 input Data input I1, TTL-compatible on ACT244, driving output O1.
5 O5 tri_state 3-STATE output O5, sources/sinks 24 mA, high impedance when OE2 is high.
6 I2 input Data input I2, TTL-compatible on ACT244, driving output O2.
7 O6 tri_state 3-STATE output O6, sources/sinks 24 mA, high impedance when OE2 is high.
8 I3 input Data input I3, TTL-compatible on ACT244, driving output O3.
9 O7 tri_state 3-STATE output O7, sources/sinks 24 mA, high impedance when OE2 is high.
10 GND power_in Ground.
11 I7 input Data input I7, TTL-compatible on ACT244, driving output O7.
12 O3 tri_state 3-STATE output O3, sources/sinks 24 mA, high impedance when OE1 is high.
13 I6 input Data input I6, TTL-compatible on ACT244, driving output O6.
14 O2 tri_state 3-STATE output O2, sources/sinks 24 mA, high impedance when OE1 is high.
15 I5 input Data input I5, TTL-compatible on ACT244, driving output O5.
16 O1 tri_state 3-STATE output O1, sources/sinks 24 mA, high impedance when OE1 is high.
17 I4 input Data input I4, TTL-compatible on ACT244, driving output O4.
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 the second buffer group (active low); a high level puts outputs O4-O7 in high impedance.
20 VCC power_in Supply voltage; ACT recommended operating range 4.5 to 5.5 V (absolute max -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
Minimum HIGH Level Input Voltage VIH 2 V VCC=4.5 V, VOUT=0.1 V or VCC−0.1 V, TA=−40°C to +85°C 4
Maximum LOW Level Input Voltage VIL 0.8 V VCC=4.5 V, VOUT=0.1 V or VCC−0.1 V, TA=−40°C to +85°C 4
Minimum HIGH Level Output Voltage VOH 4.4 V VCC=4.5 V, IOUT=−50 µA, TA=−40°C to +85°C 4
Minimum HIGH Level Output Voltage VOH 5.4 V VCC=5.5 V, IOUT=−50 µA, TA=−40°C to +85°C 4
Minimum HIGH Level Output Voltage VOH 3.76 V VCC=4.5 V, VIN=VIL or VIH, IOH=24 mA, TA=−40°C to +85°C 4
Minimum HIGH Level Output Voltage VOH 4.76 V VCC=5.5 V, VIN=VIL or VIH, IOH=24 mA (Note 4), TA=−40°C to +85°C 4
Maximum LOW Level Output Voltage VOL 0.1 V VCC=4.5 V, IOUT=50 µA, TA=−40°C to +85°C 4
Maximum LOW Level Output Voltage VOL 0.44 V VCC=4.5 V, VIN=VIL or VIH, IOL=24 mA, TA=−40°C to +85°C 4
Maximum Input Leakage Current IIN -1 1 µA VCC=5.5 V, VI=VCC, GND, TA=−40°C to +85°C 4
Maximum 3-STATE Leakage Current IOZ -2.5 2.5 µA VCC=5.5 V, VI=VIL, VIH; VO=VCC, GND, TA=−40°C to +85°C 4
Maximum ICC/Input ICCT 1.5 mA VCC=5.5 V, VI=VCC−2.1 V, TA=−40°C to +85°C 4
Minimum Dynamic Output Current IOLD 75 mA VCC=5.5 V, VOLD=1.65 V Max. (Note 5), TA=−40°C to +85°C 4
Minimum Dynamic Output Current IOHD -75 mA VCC=5.5 V, VOHD=3.85 V Min. (Note 5), TA=−40°C to +85°C 4
Maximum Quiescent Supply Current ICC 40 µA VCC=5.5 V, VIN=VCC or GND, TA=−40°C to +85°C 4
Propagation Delay, Data to Output (LH) tPLH 1.5 10 ns VCC=5.0 V, CL=50 pF, TA=−40°C to +85°C 5
Propagation Delay, Data to Output (HL) tPHL 1.5 10 ns VCC=5.0 V, CL=50 pF, TA=−40°C to +85°C 5
Output Enable Time (Z to H) tPZH 1 9.5 ns VCC=5.0 V, CL=50 pF, TA=−40°C to +85°C 5
Output Enable Time (Z to L) tPZL 1.5 10.5 ns VCC=5.0 V, CL=50 pF, TA=−40°C to +85°C 5
Output Disable Time (H to Z) tPHZ 1.5 10.5 ns VCC=5.0 V, CL=50 pF, TA=−40°C to +85°C 5
Output Disable Time (L to Z) tPLZ 2 10.5 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
Supply Voltage VCC -0.5 7 V 2
DC Input Diode Current IIK -20 20 mA VI = −0.5 V (−20); VI = VCC + 0.5 (+20) 2
DC Input Voltage VI -0.5 V −0.5 to VCC + 0.5 V 2
DC Output Diode Current IOK -20 20 mA VO = −0.5 V (−20); VI = VCC + 0.5 V (+20) 2
DC Output Voltage VO -0.5 V −0.5 to VCC + 0.5 V 2
DC Output Source or Sink Current IO -50 50 mA 2
DC VCC or Ground Current per Output Pin ICC or IGND -50 50 mA 2
Storage Temperature TSTG -65 150 °C 2
Junction Temperature TJ 140 °C 2
Supply Voltage (ACT) VCC 4.5 5.5 V ACT 2
Input Voltage VI 0 V 0 to VCC 2
Output Voltage VO 0 V 0 to VCC 2
Operating Temperature TA -40 85 °C 2
Minimum Input Edge Rate, ACT Devices ΔV/Δt 125 mV/ns VIN from 0.8 V to 2.0 V, VCC @ 4.5 V, 5.5 V 2

CAD (KiCad official)

  • Symbol: 74ACT244MTC
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74act244mtc-etched.step / 74act244mtc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74act244mtc.step / 74act244mtc.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 2026-10-27, 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