component
AiP74LVC244TA20.TR
Public Made by Adomby adom
Wuxi I-core Elec Buffer/Driver/Transceiver, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AiP74LVC244TA20.TR
Wuxi I-core Elec · Buffer/Driver/Transceiver · TSSOP-20
AiP74LVC244TA20.TR from Wuxi I-core Elec, 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 | 1OE | input | Output enable input for the first buffer section, active low; a high level puts outputs 1Y0 to 1Y3 in high impedance. |
| 2 | 1A0 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 3 | 2Y0 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 4 | 1A1 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 5 | 2Y1 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 6 | 1A2 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 7 | 2Y2 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 8 | 1A3 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 9 | 2Y3 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 10 | GND | power_in | Ground reference, 0 V. |
| 11 | 2A3 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 12 | 1Y3 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 13 | 2A2 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 14 | 1Y2 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 15 | 2A1 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 16 | 1Y1 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 17 | 2A0 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 18 | 1Y0 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 19 | 2OE | input | Output enable input for the second buffer section, active low; a high level puts outputs 2Y0 to 2Y3 in high impedance. |
| 20 | VCC | power_in | Supply voltage; the recommended range is 1.65 V to 3.6 V with functional operation specified from 1.2 V to 3.6 V, and the absolute maximum rating is 6.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I-core Elec |
| 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 | 6.5 | V | 6 | ||
| Input clamping current | IIK | -50 | mA | VI<0V | 6 | ||
| Input voltage | VI | -0.5 | 6.5 | V | 6 | ||
| Output clamping current | IOK | -50 | 50 | mA | VO>VCC or VO<0V | 6 | |
| Output voltage, HIGH or LOW state | VO | -0.5 | V | Output HIGH or LOW; max is VCC+0.5 | 6 | ||
| Output voltage, 3-state | VO | -0.5 | 6.5 | V | Output 3-state | 6 | |
| Output current | IO | -50 | 50 | mA | VO=0V~VCC | 6 | |
| Supply current | ICC | 100 | mA | 6 | |||
| Ground current | IGND | -100 | mA | 7 | |||
| Storage temperature | Tstg | -65 | 150 | ℃ | 7 | ||
| Total power dissipation | Ptot | 500 | mW | TSSOP20: derate 5.5mW/K above 60℃ | 7 | ||
| Soldering temperature | TL | 250 | ℃ | 10s | 7 | ||
| Supply voltage | VCC | 1.65 | 3.6 | V | 7 | ||
| Supply voltage (functional) | VCC | 1.2 | 3.6 | V | 功能 (functional) | 7 | |
| Input voltage | VI | 0 | 5.5 | V | 7 | ||
| Output voltage, HIGH or LOW state | VO | 0 | V | Output HIGH or LOW; max is VCC | 7 | ||
| Output voltage, 3-state | VO | 0 | 5.5 | V | Output 3-state | 7 | |
| Operating ambient temperature | Tamb | -40 | 105 | ℃ | 7 | ||
| Input transition rise and fall rate | Δt/ΔV | 0 | 20 | ns/V | VCC=1.2V~2.7V | 7 | |
| Input transition rise and fall rate | Δt/ΔV | 0 | 10 | ns/V | VCC=2.7V~3.6V | 7 | |
| HIGH-level input voltage | VIH | 1.08 | V | VCC=1.2V; Tamb=-40℃~+105℃ | 8 | ||
| HIGH-level input voltage | VIH | 1.7 | V | VCC=2.3V |
8 | ||
| HIGH-level input voltage | VIH | 2 | V | VCC=2.7V |
8 | ||
| LOW-level input voltage | VIL | 0.12 | V | VCC=1.2V; Tamb=-40℃~+105℃ | 8 | ||
| LOW-level input voltage | VIL | 0.7 | V | VCC=2.3V |
8 | ||
| LOW-level input voltage | VIL | 0.8 | V | VCC=2.7V |
8 | ||
| HIGH-level output voltage | VOH | 1.05 | V | VI=VIH or VIL; IO=-4mA; VCC=1.65V; Tamb=-40℃~+105℃ | 8 | ||
| HIGH-level output voltage | VOH | 1.65 | V | VI=VIH or VIL; IO=-8mA; VCC=2.3V; Tamb=-40℃~+105℃ | 8 | ||
| HIGH-level output voltage | VOH | 2.05 | V | VI=VIH or VIL; IO=-12mA; VCC=2.7V; Tamb=-40℃~+105℃ | 8 | ||
| HIGH-level output voltage | VOH | 2.25 | V | VI=VIH or VIL; IO=-18mA; VCC=3.0V; Tamb=-40℃~+105℃ | 8 | ||
| HIGH-level output voltage | VOH | 2 | V | VI=VIH or VIL; IO=-24mA; VCC=3.0V; Tamb=-40℃~+105℃ | 9 | ||
| LOW-level output voltage | VOL | 0.3 | V | VI=VIH or VIL; IO=100uA; VCC=1.65V |
9 | ||
| LOW-level output voltage | VOL | 0.65 | V | VI=VIH or VIL; IO=4mA; VCC=1.65V; Tamb=-40℃~+105℃ | 9 | ||
| LOW-level output voltage | VOL | 0.8 | V | VI=VIH or VIL; IO=8mA; VCC=2.3V; Tamb=-40℃~+105℃ | 9 | ||
| LOW-level output voltage | VOL | 0.6 | V | VI=VIH or VIL; IO=12mA; VCC=2.7V; Tamb=-40℃~+105℃ | 9 | ||
| Input leakage current | II | -20 | 20 | uA | VCC=3.6V; VI=5.5V or GND; Tamb=-40℃~+105℃ | 9 | |
| OFF-state output current | IOZ | -20 | 20 | uA | VCC=3.6V; VI=VIH or VIL; VO=5.5V or GND; Tamb=-40℃~+105℃ | 9 | |
| Power-off leakage current | IOFF | -20 | 20 | uA | VCC=0V; VI or VO=5.5V; Tamb=-40℃~+105℃ | 9 | |
| Quiescent supply current | ICC | 40 | uA | VCC=3.6V; VI=VCC or GND; IO=0A; Tamb=-40℃~+105℃ | 9 | ||
| Additional supply current per input pin | ΔICC | 5 | 5000 | uA | VCC=2.7V |
9 | |
| Input capacitance | CI | 4 | pF | 8 | |||
| Propagation delay nAn to nYn | tpd | 1.5 | 15.8 | ns | VCC=1.65V |
10 | |
| Propagation delay nAn to nYn | tpd | 1 | 8.2 | ns | VCC=2.3V |
10 | |
| Propagation delay nAn to nYn | tpd | 1.5 | 9 | ns | VCC=2.7V; Tamb=-40℃~+105℃ | 10 | |
| Propagation delay nAn to nYn | tpd | 1.5 | 7.5 | ns | VCC=3.0V |
10 | |
| Enable time nOE to nYn | ten | 1.5 | 20 | ns | VCC=1.65V |
10 | |
| Enable time nOE to nYn | ten | 1.5 | 11 | ns | VCC=2.3V |
10 | |
| Enable time nOE to nYn | ten | 1 | 9.5 | ns | VCC=3.0V |
10 | |
| Disable time nOE to nYn | tdis | 2.2 | 11.3 | ns | VCC=1.65V |
10 | |
| Disable time nOE to nYn | tdis | 0.5 | 6.4 | ns | VCC=2.3V |
10 | |
| Disable time nOE to nYn | tdis | 1.5 | 8.5 | ns | VCC=2.7V; Tamb=-40℃~+105℃ | 10 | |
| Disable time nOE to nYn | tdis | 1.5 | 7.5 | ns | VCC=3.0V |
10 | |
| Output skew time | tsk(o) | 1.5 | ns | Tamb=-40℃~+105℃ | 10 |
CAD (KiCad official)
- Symbol:
AiP74LVC244TA20.TR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
aip74lvc244ta20-tr-etched.step/aip74lvc244ta20-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);aip74lvc244ta20-tr.step/aip74lvc244ta20-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Wuxi I-core Elec datasheet (16 pp, sha256
f780f1e269ebb87e, retrieved 2026-10-22, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# AiP74LVC244TA20.TR
**Wuxi I-core Elec** · Buffer/Driver/Transceiver · TSSOP-20
AiP74LVC244TA20.TR from Wuxi I-core Elec, 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 | 1OE | input | Output enable input for the first buffer section, active low; a high level puts outputs 1Y0 to 1Y3 in high impedance. |
| 2 | 1A0 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 3 | 2Y0 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 4 | 1A1 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 5 | 2Y1 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 6 | 1A2 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 7 | 2Y2 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 8 | 1A3 | input | Data input of the first buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 9 | 2Y3 | tri_state | Bus output of the second buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 10 | GND | power_in | Ground reference, 0 V. |
| 11 | 2A3 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 12 | 1Y3 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 13 | 2A2 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 14 | 1Y2 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 15 | 2A1 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 16 | 1Y1 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 17 | 2A0 | input | Data input of the second buffer section, which the datasheet states can be driven by 3.3 V or 5.0 V devices and accepts input voltages up to 5.5 V. |
| 18 | 1Y0 | tri_state | Bus output of the first buffer section with three-state capability, where the output voltage in the three-state mode may be up to 5.5 V. |
| 19 | 2OE | input | Output enable input for the second buffer section, active low; a high level puts outputs 2Y0 to 2Y3 in high impedance. |
| 20 | VCC | power_in | Supply voltage; the recommended range is 1.65 V to 3.6 V with functional operation specified from 1.2 V to 3.6 V, and the absolute maximum rating is 6.5 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi I-core Elec |
| 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 | | 6.5 | V | | 6 |
| Input clamping current | IIK | -50 | | | mA | VI<0V | 6 |
| Input voltage | VI | -0.5 | | 6.5 | V | | 6 |
| Output clamping current | IOK | -50 | | 50 | mA | VO>VCC or VO<0V | 6 |
| Output voltage, HIGH or LOW state | VO | -0.5 | | | V | Output HIGH or LOW; max is VCC+0.5 | 6 |
| Output voltage, 3-state | VO | -0.5 | | 6.5 | V | Output 3-state | 6 |
| Output current | IO | -50 | | 50 | mA | VO=0V~VCC | 6 |
| Supply current | ICC | | | 100 | mA | | 6 |
| Ground current | IGND | -100 | | | mA | | 7 |
| Storage temperature | Tstg | -65 | | 150 | ℃ | | 7 |
| Total power dissipation | Ptot | | | 500 | mW | TSSOP20: derate 5.5mW/K above 60℃ | 7 |
| Soldering temperature | TL | | | 250 | ℃ | 10s | 7 |
| Supply voltage | VCC | 1.65 | | 3.6 | V | | 7 |
| Supply voltage (functional) | VCC | 1.2 | | 3.6 | V | 功能 (functional) | 7 |
| Input voltage | VI | 0 | | 5.5 | V | | 7 |
| Output voltage, HIGH or LOW state | VO | 0 | | | V | Output HIGH or LOW; max is VCC | 7 |
| Output voltage, 3-state | VO | 0 | | 5.5 | V | Output 3-state | 7 |
| Operating ambient temperature | Tamb | -40 | | 105 | ℃ | | 7 |
| Input transition rise and fall rate | Δt/ΔV | 0 | | 20 | ns/V | VCC=1.2V~2.7V | 7 |
| Input transition rise and fall rate | Δt/ΔV | 0 | | 10 | ns/V | VCC=2.7V~3.6V | 7 |
| HIGH-level input voltage | VIH | 1.08 | | | V | VCC=1.2V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level input voltage | VIH | 1.7 | | | V | VCC=2.3V~2.7V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level input voltage | VIH | 2 | | | V | VCC=2.7V~3.6V; Tamb=-40℃~+105℃ | 8 |
| LOW-level input voltage | VIL | | | 0.12 | V | VCC=1.2V; Tamb=-40℃~+105℃ | 8 |
| LOW-level input voltage | VIL | | | 0.7 | V | VCC=2.3V~2.7V; Tamb=-40℃~+105℃ | 8 |
| LOW-level input voltage | VIL | | | 0.8 | V | VCC=2.7V~3.6V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level output voltage | VOH | 1.05 | | | V | VI=VIH or VIL; IO=-4mA; VCC=1.65V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level output voltage | VOH | 1.65 | | | V | VI=VIH or VIL; IO=-8mA; VCC=2.3V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level output voltage | VOH | 2.05 | | | V | VI=VIH or VIL; IO=-12mA; VCC=2.7V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level output voltage | VOH | 2.25 | | | V | VI=VIH or VIL; IO=-18mA; VCC=3.0V; Tamb=-40℃~+105℃ | 8 |
| HIGH-level output voltage | VOH | 2 | | | V | VI=VIH or VIL; IO=-24mA; VCC=3.0V; Tamb=-40℃~+105℃ | 9 |
| LOW-level output voltage | VOL | | | 0.3 | V | VI=VIH or VIL; IO=100uA; VCC=1.65V~3.6V; Tamb=-40℃~+105℃ | 9 |
| LOW-level output voltage | VOL | | | 0.65 | V | VI=VIH or VIL; IO=4mA; VCC=1.65V; Tamb=-40℃~+105℃ | 9 |
| LOW-level output voltage | VOL | | | 0.8 | V | VI=VIH or VIL; IO=8mA; VCC=2.3V; Tamb=-40℃~+105℃ | 9 |
| LOW-level output voltage | VOL | | | 0.6 | V | VI=VIH or VIL; IO=12mA; VCC=2.7V; Tamb=-40℃~+105℃ | 9 |
| Input leakage current | II | -20 | | 20 | uA | VCC=3.6V; VI=5.5V or GND; Tamb=-40℃~+105℃ | 9 |
| OFF-state output current | IOZ | -20 | | 20 | uA | VCC=3.6V; VI=VIH or VIL; VO=5.5V or GND; Tamb=-40℃~+105℃ | 9 |
| Power-off leakage current | IOFF | -20 | | 20 | uA | VCC=0V; VI or VO=5.5V; Tamb=-40℃~+105℃ | 9 |
| Quiescent supply current | ICC | | | 40 | uA | VCC=3.6V; VI=VCC or GND; IO=0A; Tamb=-40℃~+105℃ | 9 |
| Additional supply current per input pin | ΔICC | | 5 | 5000 | uA | VCC=2.7V~3.6V; VI=VCC-0.6V; IO=0A; Tamb=-40℃~+105℃ | 9 |
| Input capacitance | CI | | 4 | | pF | | 8 |
| Propagation delay nAn to nYn | tpd | 1.5 | | 15.8 | ns | VCC=1.65V~1.95V; Tamb=-40℃~+105℃ | 10 |
| Propagation delay nAn to nYn | tpd | 1 | | 8.2 | ns | VCC=2.3V~2.7V; Tamb=-40℃~+105℃ | 10 |
| Propagation delay nAn to nYn | tpd | 1.5 | | 9 | ns | VCC=2.7V; Tamb=-40℃~+105℃ | 10 |
| Propagation delay nAn to nYn | tpd | 1.5 | | 7.5 | ns | VCC=3.0V~3.6V; Tamb=-40℃~+105℃ | 10 |
| Enable time nOE to nYn | ten | 1.5 | | 20 | ns | VCC=1.65V~1.95V; Tamb=-40℃~+105℃ | 10 |
| Enable time nOE to nYn | ten | 1.5 | | 11 | ns | VCC=2.3V~2.7V; Tamb=-40℃~+105℃ | 10 |
| Enable time nOE to nYn | ten | 1 | | 9.5 | ns | VCC=3.0V~3.6V; Tamb=-40℃~+105℃ | 10 |
| Disable time nOE to nYn | tdis | 2.2 | | 11.3 | ns | VCC=1.65V~1.95V; Tamb=-40℃~+105℃ | 10 |
| Disable time nOE to nYn | tdis | 0.5 | | 6.4 | ns | VCC=2.3V~2.7V; Tamb=-40℃~+105℃ | 10 |
| Disable time nOE to nYn | tdis | 1.5 | | 8.5 | ns | VCC=2.7V; Tamb=-40℃~+105℃ | 10 |
| Disable time nOE to nYn | tdis | 1.5 | | 7.5 | ns | VCC=3.0V~3.6V; Tamb=-40℃~+105℃ | 10 |
| Output skew time | tsk(o) | | | 1.5 | ns | Tamb=-40℃~+105℃ | 10 |
## CAD (KiCad official)
- Symbol: `AiP74LVC244TA20.TR`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `aip74lvc244ta20-tr-etched.step` / `aip74lvc244ta20-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aip74lvc244ta20-tr.step` / `aip74lvc244ta20-tr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Wuxi I-core Elec datasheet](docs/aip74lvc244ta20-tr-datasheet.pdf) (16 pp, sha256 `f780f1e269ebb87e`, retrieved 2026-10-22, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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](docs/aip74lvc244ta20-tr-datasheet.pdf)