component
74VHC244MTCX
Public Made by Adomby adom
onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74vhc244mtcx.step/74vhc244mtcx.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# 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](https://www.onsemi.com/pdf/datasheet/74vhc244mtcx-d.pdf) (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](docs/74vhc244mtcx-datasheet.pdf)