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74VHC244MTCX

Public Made by Adom

by adom

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

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74VHC244MTCX

onsemi · Buffers, Drivers, Receivers, Transceivers · TSSOP-20

74VHC244MTCX 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 Active-LOW 3-STATE output enable input for outputs O0-O3 (pins 18, 16, 14, 12); outputs are high impedance when HIGH.
2 I0 input Data input 0, drives output O0; input tolerates 0V to 7V regardless of supply voltage.
3 O4 tri_state 3-STATE buffer output 4, controlled by OE2 and driven from I4.
4 I1 input Data input 1, drives output O1; input tolerates 0V to 7V regardless of supply voltage.
5 O5 tri_state 3-STATE buffer output 5, controlled by OE2 and driven from I5.
6 I2 input Data input 2, drives output O2; input tolerates 0V to 7V regardless of supply voltage.
7 O6 tri_state 3-STATE buffer output 6, controlled by OE2 and driven from I6.
8 I3 input Data input 3, drives output O3; input tolerates 0V to 7V regardless of supply voltage.
9 O7 tri_state 3-STATE buffer output 7, controlled by OE2 and driven from I7.
10 GND power_in Ground (0V) supply pin.
11 I7 input Data input 7, drives output O7; input tolerates 0V to 7V regardless of supply voltage.
12 O3 tri_state 3-STATE buffer output 3, controlled by OE1 and driven from I3.
13 I6 input Data input 6, drives output O6; input tolerates 0V to 7V regardless of supply voltage.
14 O2 tri_state 3-STATE buffer output 2, controlled by OE1 and driven from I2.
15 I5 input Data input 5, drives output O5; input tolerates 0V to 7V regardless of supply voltage.
16 O1 tri_state 3-STATE buffer output 1, controlled by OE1 and driven from I1.
17 I4 input Data input 4, drives output O4; input tolerates 0V to 7V regardless of supply voltage.
18 O0 tri_state 3-STATE buffer output 0, controlled by OE1 and driven from I0.
19 OE2 input Active-LOW 3-STATE output enable input for outputs O4-O7 (pins 3, 5, 7, 9); outputs are high impedance when HIGH.
20 VCC power_in Positive supply voltage, recommended 2.0V to 5.5V (absolute maximum 7.0V).

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
Supply Voltage (VCC) VCC -0.5 7 V 4
DC Input Voltage (VIN) VIN -0.5 7 V 4
DC Output Voltage (VOUT) VOUT -0.5 V Max printed as VCC plus 0.5 V 4
Input Diode Current (IIK) IIK 20 mA 4
Output Diode Current (IOK) IOK -20 20 mA 4
DC Output Current (IOUT) IOUT -25 25 mA 4
DC VCC/GND Current (ICC) ICC -75 75 mA 4
Storage Temperature (TSTG) TSTG -65 150 °C 4
Lead Temperature (TL) TL 260 °C Soldering, 10 seconds 4
Supply Voltage (VCC) VCC 2 5.5 V 4
Input Voltage (VIN) VIN 0 5.5 V 4
Output Voltage (VOUT) VOUT 0 V Max printed as VCC 4
Operating Temperature (TOPR) TOPR -40 85 °C 4
Input Rise and Fall Time tr, tf 0 100 ns/V VCC 3.3V ±0.3V 4
Input Rise and Fall Time tr, tf 0 20 ns/V VCC 5.0V ±0.5V 4
HIGH Level Input Voltage VIH 1.5 V VCC 2.0V; TA 25°C 4
LOW Level Input Voltage VIL 0.5 V VCC 2.0V; TA 25°C 4
HIGH Level Output Voltage VOH 1.9 2 V VCC 2.0V; VIN=VIH or VIL; IOH 50 µA; TA 25°C 4
HIGH Level Output Voltage VOH 1.9 V VCC 2.0V; VIN=VIH or VIL; IOH 50 µA; TA -40 to 85°C 4
HIGH Level Output Voltage VOH 2.9 3 V VCC 3.0V; VIN=VIH or VIL; IOH 50 µA; TA 25°C 4
HIGH Level Output Voltage VOH 2.9 V VCC 3.0V; VIN=VIH or VIL; IOH 50 µA; TA -40 to 85°C 4
HIGH Level Output Voltage VOH 4.4 4.5 V VCC 4.5V; VIN=VIH or VIL; IOH 50 µA; TA 25°C 4
HIGH Level Output Voltage VOH 4.4 V VCC 4.5V; VIN=VIH or VIL; IOH 50 µA; TA -40 to 85°C 4
HIGH Level Output Voltage VOH 2.58 V VCC 3.0V; IOH 4 mA; TA 25°C 4
HIGH Level Output Voltage VOH 2.48 V VCC 3.0V; IOH 4 mA; TA -40 to 85°C 4
HIGH Level Output Voltage VOH 3.94 V VCC 4.5V; IOH 8 mA; TA 25°C 4
HIGH Level Output Voltage VOH 3.8 V VCC 4.5V; IOH 8 mA; TA -40 to 85°C 4
LOW Level Output Voltage VOL 0 0.1 V VCC 2.0V; VIN=VIH or VIL; IOL 50 µA; TA 25°C 4
LOW Level Output Voltage VOL 0.1 V VCC 2.0V; VIN=VIH or VIL; IOL 50 µA; TA -40 to 85°C 4
LOW Level Output Voltage VOL 0.36 V VCC 3.0V; IOL 4 mA; TA 25°C 4
LOW Level Output Voltage VOL 0.44 V VCC 3.0V; IOL 4 mA; TA -40 to 85°C 4
3-STATE Output Off-State Current IOZ -0.25 0.25 µA VCC 5.5V; VIN=VIH or VIL; VOUT=VCC or GND; TA 25°C 4
3-STATE Output Off-State Current IOZ -2.5 2.5 µA VCC 5.5V; VIN=VIH or VIL; VOUT=VCC or GND; TA -40 to 85°C 4
Input Leakage Current IIN -0.1 0.1 µA VCC 0 to 5.5V; VIN=5.5V or GND; TA 25°C 4
Input Leakage Current IIN -1 1 µA VCC 0 to 5.5V; VIN=5.5V or GND; TA -40 to 85°C 4
Quiescent Supply Current ICC 4 µA VCC 5.5V; VIN=VCC or GND; TA 25°C 4
Quiescent Supply Current ICC 40 µA VCC 5.5V; VIN=VCC or GND; TA -40 to 85°C 4
Quiet Output Maximum Dynamic VOL VOLP 0.6 0.9 V VCC 5.0V; CL 50 pF; TA 25°C 4
Quiet Output Minimum Dynamic VOL VOLV 0.6 0.9 V VCC 5.0V; CL 50 pF; TA 25°C 4
Minimum HIGH Level Dynamic Input Voltage VIHD 3.5 V VCC 5.0V; CL 50 pF 4
Maximum HIGH Level Dynamic Input Voltage VILD 1.5 V VCC 5.0V; CL 50 pF 4
Propagation Delay Time tPLH, tPHL 5.8 8.4 ns VCC 3.3V ±0.3V; CL 15 pF; TA 25°C 5
Propagation Delay Time tPLH, tPHL 1 10 ns VCC 3.3V ±0.3V; CL 15 pF; TA -40 to 85°C 5
Propagation Delay Time tPLH, tPHL 8.3 11.9 ns VCC 3.3V ±0.3V; CL 50 pF; TA 25°C 5
Propagation Delay Time tPLH, tPHL 1 13.5 ns VCC 3.3V ±0.3V; CL 50 pF; TA -40 to 85°C 5
Propagation Delay Time tPLH, tPHL 3.9 5.5 ns VCC 5.0V ±0.5V; CL 15 pF; TA 25°C 5
Propagation Delay Time tPLH, tPHL 1 6.5 ns VCC 5.0V ±0.5V; CL 15 pF; TA -40 to 85°C 5
Propagation Delay Time tPLH, tPHL 5.4 7.5 ns VCC 5.0V ±0.5V; CL 50 pF; TA 25°C 5
Propagation Delay Time tPLH, tPHL 1 8.5 ns VCC 5.0V ±0.5V; CL 50 pF; TA -40 to 85°C 5
3-STATE Output Enable Time tPZL 1 12.5 ns VCC 3.3V ±0.3V; RL 1 kΩ; CL 15 pF; TA -40 to 85°C 5
3-STATE Output Disable Time tPLZ 1 16 ns VCC 3.3V ±0.3V; RL 1 kΩ; CL 50 pF; TA -40 to 85°C 5
3-STATE Output Disable Time tPHZ 1 10.5 ns VCC 5.0V ±0.5V; CL 50 pF; TA -40 to 85°C 5

CAD (KiCad official)

  • Symbol: 74VHC244MTCX
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74vhc244mtcx-etched.step / 74vhc244mtcx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74vhc244mtcx.step / 74vhc244mtcx.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (10 pp, sha256 3c1c85b7ad0e798c, retrieved 2026-10-18, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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